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valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accounts receivable for NPL services</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6,205</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">8,111</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div> 8111000 6205000 6380000 -18349000 -35138000 6973000 13353000 -31304000 -44429000 11896000 16883000 -18547000 211000000 233000000 <div> <div> Accumulated Removal Costs.    Approved regulatory practices allow Southwest to include in depreciation expense a component to recover removal costs associated with utility plant retirements. In accordance with the Securities and Exchange Commission's ("SEC") position on presentation of these amounts, management has reclassified estimated removal costs from accumulated depreciation to accumulated removal costs within the liabilities section of the balance sheets. The reclassified amounts are presented in the table below (thousands of dollars):   <div align="right"> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="96%"> <tr><td width="66%"> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">December 31, 2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">December 31, 2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accumulated removal costs</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">233,000 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">211,000 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table></div></div> </div> 5 5000000 957000 512000 718000 1221000 945000 1154000 -1000 -2000 1000 5600000 5400000 200000 928000 918000 10000 <div> <div> Basis of Presentation.     The Company follows generally accepted accounting principles in the United States ("U.S. GAAP") in accounting for all of its businesses. Accounting for the natural gas utility operations conforms with U.S. GAAP as applied to regulated companies and as prescribed by federal agencies and the commissions of the various states in which the utility operates. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. </div> </div> -2476000 -830000 -7771000 3700000 742000 3100000 <div> <div> Construction Expenses.    The construction expenses classification in the income statement includes payroll expenses, job-related equipment costs, direct construction costs, gains and losses on equipment sales, general and administrative expenses, and office-related fixed costs of NPL. </div> </div> <div> <div> Construction Revenues.    The majority of NPL contracts are performed under unit price contracts. Generally, these contracts state prices per unit of installation. Typical installations are accomplished in two weeks or less. Revenues are recorded as installations are completed. Long-term fixed-price contracts use the percentage-of-completion method of accounting and, therefore, take into account the cost, estimated earnings, and revenue to date on contracts not yet completed. The amount of revenue recognized is based on costs expended to date relative to anticipated final contract costs. Revisions in estimates of costs and earnings during the course of the work are reflected in the accounting period in which the facts requiring revision become known. If a loss on a contract becomes known or is anticipated, the entire amount of the estimated ultimate loss is recognized at that time in the financial statements. </div> </div> 0.007 1600000000 2026 2017 2022 2027 February 2011 2011 2020 2012 2041 2012 2038 2038 2038 2038 2034 2038 2033 2035 2036 2038 2028 2038 2039 2038 February 2011 May 2012 0.00182 2013 2013 10 1.00 Upon retirement, payments of compensation deferred, plus interest, are made in equal monthly installments over 10, 15, or 20 years, as elected by the participant. 43704000 2122000 -452000 46201000 -4167000 47147000 -4711000 8753000 43420000 -315000 62314000 -1070000 11766000 51710000 -92000 466628000 557118000 42836000 46279000 61446000 <div> <div> Deferred Purchased Gas Costs.    The various regulatory commissions have established procedures to enable Southwest to adjust its billing rates for changes in the cost of natural gas purchased. The difference between the current cost of gas purchased and the cost of gas recovered in billed rates is deferred. Generally, these deferred amounts are recovered or refunded within one year. </div> </div> 59096000 4824000 4379000 3910000 2797000 16398000 5616000 84005000 10050000 3442000 51487000 3470000 7516000 9653000 -2126000 -4606000 -5916000 867000 867000 867000 538000 538000 537000 -329000 -329000 -330000 870000 392975000 25511000 475931000 29640000 521829000 29944000 15431000 15123000 308000 652000 464000 188000 105931000 101974000 3957000 9567000 404000 65677000 -5864000 -248000 -40254000 -656000 11482000 621000 11122000 -0.025 -0.023 -0.001 0.002 0.002 0.002 600000000 7500000 4511000 4583000 4626000 246000 511193000 481353000 29840000 552701000 522747000 29954000 231000 2031 47000000 46000000 <div> <div> Gas Operating Revenues.    Revenues are recorded when customers are billed. Customer billings are based on monthly meter reads and are calculated in accordance with applicable tariffs and state and local laws, regulations, and agreements. An estimate of the amount of natural gas distributed, but not yet billed, to residential and commercial customers from the latest meter reading date to the end of the reporting period is also recognized as accrued utility revenue. Revenues also include the net impacts of margin tracker/decoupling accruals. The Company acts as an agent for state and local taxing authorities in the collection and remission of a variety of taxes, including franchise fees, sales and use taxes, and surcharges. These taxes are not included in gas operating revenues, except for certain franchise fees in California operating jurisdictions which are not significant. The Company uses the net classification method to report taxes collected from customers to be remitted to governmental authorities. </div> </div> 124794000 0.50 25 50000000 83001000 1179000 81822000 77589000 564000 77025000 1.50 11691000 150000000 150000000 28.53 36.67 42.49 0.035 0.035 0.35 0.25 <div> <div> Nature of Operations.    Southwest Gas Corporation and its subsidiaries (the "Company") consist of two segments: natural gas operations ("Southwest" or the "natural gas operations" segment) and construction services. Southwest is engaged in the business of purchasing, distributing, and transporting natural gas for customers in portions of Arizona, Nevada, and California. The public utility rates, practices, facilities, and service territories of Southwest are subject to regulatory oversight. Natural gas purchases and the timing of related recoveries can materially impact liquidity. NPL Construction Co. ("NPL" or the "construction services" segment), a wholly owned subsidiary, is a full-service underground piping contractor that primarily provides utility companies with trenching and installation, replacement, and maintenance services for energy distribution systems. In November 2009, NPL entered into a venture to market natural gas engine-driven heating, ventilating, and air conditioning ("HVAC") technology and products. NPL has a <div>65 % interest in the entity (IntelliChoice Energy, "ICE") and consolidates ICE as a majority-owned subsidiary. <div> </div> <div> Basis of Presentation.     The Company follows generally accepted accounting principles in the United States ("U.S. GAAP") in accounting for all of its businesses. Accounting for the natural gas utility operations conforms with U.S. GAAP as applied to regulated companies and as prescribed by federal agencies and the commissions of the various states in which the utility operates. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. </div> <div> Consolidation.    The accompanying financial statements are presented on a consolidated basis and include the accounts of Southwest Gas Corporation and all subsidiaries. All significant intercompany balances and transactions have been eliminated with the exception of transactions between Southwest and NPL in accordance with accounting treatment for rate-regulated entities. </div> <div> Net Utility Plant.    Net utility plant includes gas plant at original cost, less the accumulated provision for depreciation and amortization, plus the unamortized balance of acquisition adjustments. Original cost includes contracted services, material, payroll and related costs such as taxes and benefits, general and administrative expenses, and an allowance for funds used during construction, less contributions in aid of construction. </div> <div> Deferred Purchased Gas Costs.    The various regulatory commissions have established procedures to enable Southwest to adjust its billing rates for changes in the cost of natural gas purchased. The difference between the current cost of gas purchased and the cost of gas recovered in billed rates is deferred. Generally, these deferred amounts are recovered or refunded within one year. </div> <div> Income Taxes.    The Company uses the asset and liability method of accounting for income taxes. Under the asset and liability method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the period that includes the enactment date. For regulatory and financial reporting purposes, investment tax credits ("ITC") related to gas utility operations are deferred and amortized over the life of related fixed assets. </div> <div> Cash and Cash Equivalents.    For purposes of reporting consolidated cash flows, cash and cash equivalents include cash on hand and financial instruments with a purchase-date maturity of three months or less. </div>   <div> Accumulated Removal Costs.    Approved regulatory practices allow Southwest to include in depreciation expense a component to recover removal costs associated with utility plant retirements. In accordance with the Securities and Exchange Commission's ("SEC") position on presentation of these amounts, management has reclassified estimated removal costs from accumulated depreciation to accumulated removal costs within the liabilities section of the balance sheets. The reclassified amounts are presented in the table below (thousands of dollars):   <div align="right"> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="96%"> <tr><td width="66%"> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">December 31, 2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">December 31, 2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accumulated removal costs</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">233,000 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">211,000 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table></div></div> <div> Gas Operating Revenues.    Revenues are recorded when customers are billed. Customer billings are based on monthly meter reads and are calculated in accordance with applicable tariffs and state and local laws, regulations, and agreements. An estimate of the amount of natural gas distributed, but not yet billed, to residential and commercial customers from the latest meter reading date to the end of the reporting period is also recognized as accrued utility revenue. Revenues also include the net impacts of margin tracker/decoupling accruals. The Company acts as an agent for state and local taxing authorities in the collection and remission of a variety of taxes, including franchise fees, sales and use taxes, and surcharges. These taxes are not included in gas operating revenues, except for certain franchise fees in California operating jurisdictions which are not significant. The Company uses the net classification method to report taxes collected from customers to be remitted to governmental authorities. </div> <div> Construction Revenues.    The majority of NPL contracts are performed under unit price contracts. Generally, these contracts state prices per unit of installation. Typical installations are accomplished in two weeks or less. Revenues are recorded as installations are completed. Long-term fixed-price contracts use the percentage-of-completion method of accounting and, therefore, take into account the cost, estimated earnings, and revenue to date on contracts not yet completed. The amount of revenue recognized is based on costs expended to date relative to anticipated final contract costs. Revisions in estimates of costs and earnings during the course of the work are reflected in the accounting period in which the facts requiring revision become known. If a loss on a contract becomes known or is anticipated, the entire amount of the estimated ultimate loss is recognized at that time in the financial statements. </div> <div> Construction Expenses.    The construction expenses classification in the income statement includes payroll expenses, job-related equipment costs, direct construction costs, gains and losses on equipment sales, general and administrative expenses, and office-related fixed costs of NPL. </div> <div> Net Cost of Gas Sold.     Components of net cost of gas sold include natural gas commodity costs (fixed-price and variable-rate), pipeline capacity/transportation costs, and actual settled costs of natural gas derivative instruments. Also included are the net impacts of PGA deferrals and recoveries. </div> <div> Operations and Maintenance Expense.    For financial reporting purposes, operations and maintenance expense includes Southwest's operating and maintenance costs associated with serving utility customers, uncollectible expense, administrative and general salaries and expense, employee benefits expense, and legal expense (including injuries and damages). </div> <div> Depreciation and Amortization.    Utility plant depreciation is computed on the straight-line remaining life method at composite rates considered sufficient to amortize costs over estimated service lives, including components which compensate for removal costs (net of salvage value), and retirements, as approved by the appropriate regulatory agency. When plant is retired from service, the original cost of plant, including cost of removal, less salvage, is charged to the accumulated provision for depreciation. Other regulatory assets, including acquisition adjustments, are amortized when appropriate, over time periods authorized by regulators. Nonutility and construction services-related property and equipment are depreciated on a straight-line method based on the estimated useful lives of the related assets. Costs and gains related to refunding utility debt and debt issuance expenses are deferred and amortized over the weighted-average lives of the new issues and become a component of interest expense. </div> <div> Allowance for Funds Used During Construction ("AFUDC").    AFUDC represents the cost of both debt and equity funds used to finance utility construction. AFUDC is capitalized as part of the cost of utility plant. The debt portion of AFUDC is reported in the consolidated statements of income as an offset to net interest deductions and the equity portion is reported as other income. Utility plant construction costs, including AFUDC, are recovered in authorized rates through depreciation when completed projects are placed into operation, and general rate relief is requested and granted.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="79%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2009 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr><td valign="bottom"> (In thousands)</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> AFUDC:</td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Debt portion</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">718 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">512 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">957 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Equity portion</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">1,154 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">945 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">1,221 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr> <tr><td valign="top"> AFUDC capitalized as part of utility plant</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">1,872 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">1,457 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">2,178 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table></div> <div> Other Income (Deductions).    The following table provides the composition of significant items included in Other income (deductions) on the consolidated statements of income (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2009 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Change in COLI policies</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">700 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">9,770 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">8,546 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr><td valign="top"> Interest income</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">485 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">194 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">271 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Pipe replacement costs</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(4,761 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(5,024 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(2,642 </td> <td valign="bottom" nowrap="nowrap">)  </td></tr> <tr><td valign="top"> Miscellaneous income and (expense)</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(1,836 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(1,090 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">470 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total other income (deductions)</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">(5,412 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">3,850 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">6,645 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table> Included in the table above is the change in cash surrender values of company-owned life insurance ("COLI") policies (including net death benefits recognized). These life insurance policies on members of management and other key employees are used by Southwest to indemnify itself against the loss of talent, expertise, and knowledge, as well as to provide indirect funding for certain nonqualified benefit plans. Current tax regulations provide for tax-free treatment of life insurance (death benefit) proceeds. Therefore, the change in the cash surrender value components of COLI policies, as they progress towards the ultimate death benefits, is also recorded without tax consequences. Pipe replacement costs include amounts associated with certain Arizona non-recoverable pipe replacement work. </div> <div> Earnings Per Share.     Basic earnings per share ("EPS") are calculated by dividing net income by the weighted-average number of shares outstanding during the period. Diluted EPS includes the effect of additional weighted-average common stock equivalents (stock options, performance shares, and restricted stock units). Unless otherwise noted, the term "Earnings Per Share" refers to Basic EPS. A reconciliation of the shares used in the Basic and Diluted EPS calculations is shown in the following table. Net income was the same for Basic and Diluted EPS calculations.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="79%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2009 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr><td valign="bottom"> (In thousands)</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Average basic shares</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,858 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,405 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">44,752 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr><td valign="top"> Effect of dilutive securities:</td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Stock options</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">52 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">56 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">14 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr><td valign="top"> Performance shares</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">271 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">260 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">216 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Restrictled stock units</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">110 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">102 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">80 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr> <tr><td valign="top"> Average diluted shares</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">46,291 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,823 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,062 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table></div>   <div> Out-of-Period Adjustment.    In September 2011, the Company identified an isolated error in a regulatory deferral mechanism that overstated revenues by $3.7 million for periods prior to the third quarter of 2011. Management concluded the error was not material to any individual prior interim or annual period (or to the current annual period) and, therefore, the error was corrected during the third quarter of 2011. The effect was a decrease in revenues and regulatory assets of $ 3.7  million, of which $2.9 million pertains to years prior to 2011. </div> Recently Issued Accounting Standards Updates.    In May 2011, the Financial Accounting Standards Board ("FASB") issued the update "Fair Value Measurement (Topic 820) Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS." The amended guidance includes several new fair value disclosure requirements, including, among other things, information about transfers between Level 1 and Level 2 of the fair value hierarchy, enhanced information about valuation techniques and unobservable inputs used in Level 3 fair value measurements, and a narrative description of Level 3 measurements' sensitivity to changes in unobservable inputs. For the Company, the update is effective prospectively beginning January 2012. The adoption of the update is not expected to significantly impact the disclosures of the Company. In June 2011, The FASB issued the update "Comprehensive Income (Topic 220) Presentation of Comprehensive Income" which eliminates the current option to report the components of other comprehensive income in the statement of changes in equity. An entity will have the option to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in one continuous statement of comprehensive income or in two separate but consecutive statements. The update includes no changes to the components that are recognized in net income or other comprehensive income under current U.S. GAAP. In December 2011, the FASB issued the update "Comprehensive Income (Topic 220) Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05" to defer the requirement in the previous update to present reclassifications out of accumulated other comprehensive income separately in the income statement. The Company chose to present two separate but consecutive statements and to adopt the update as of December 31, 2011, as permitted. In September 2011, the FASB issued the update "Intangibles – Goodwill and Other (Topic 350) Testing Goodwill for Impairment." The update is intended to simplify how entities test goodwill for impairment. The update permits an entity to first assess qualitative factors to determine whether it is "more likely than not" that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test described in Topic 350 "Intangibles – Goodwill and Other." The more-likely-than-not threshold is defined as having a likelihood of more than 50%. The Company chose to adopt the update as of December 31, 2011 as permitted. The update did not have an impact on the Company's financial position or results of operations. In December 2011, the FASB issued the update "Balance Sheet (Topic 210)." The update requires an entity to disclose information about financial instruments and derivative instruments that are either offset or subject to an enforceable master netting arrangement or similar agreement. This information is intended to enable users of an entity's financial statements to understand the effect of those arrangements on the entity's financial position. The Company will adopt this update, as required, on January 1, 2013 for interim and annual reporting periods. All disclosures are required to be provided retrospectively for all periods presented. This update is not expected to have a material impact on the Company's disclosures. Subsequent Events.    Management of the Company monitors events occurring after the balance sheet date and prior to the issuance of the financial statements to determine the impacts, if any, of events on the financial statements to be issued and has made appropriate disclosures. <div> </div></div> </div> </div> 2016 323000 24913000 18947000 2797000 3169000 32668000 26486000 2610000 3572000 34416000 29235000 2567000 2614000 <div> <div> Operations and Maintenance Expense.    For financial reporting purposes, operations and maintenance expense includes Southwest's operating and maintenance costs associated with serving utility customers, uncollectible expense, administrative and general salaries and expense, employee benefits expense, and legal expense (including injuries and damages). </div> </div> 9567000 404000 65677000 -2824000 2842000 -8138000 1732000 -1741000 4987000 -11436000 -11436000 -11134000 -11134000 -18446000 -17958000 7010000 6824000 0.38 <div> <div> Other Income (Deductions).    The following table provides the composition of significant items included in Other income (deductions) on the consolidated statements of income (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2009 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Change in COLI policies</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">700 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">9,770 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">8,546 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr><td valign="top"> Interest income</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">485 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">194 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">271 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Pipe replacement costs</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(4,761 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(5,024 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(2,642 </td> <td valign="bottom" nowrap="nowrap">)  </td></tr> <tr><td valign="top"> Miscellaneous income and (expense)</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(1,836 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(1,090 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">470 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total other income (deductions)</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">(5,412 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">3,850 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">6,645 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table> Included in the table above is the change in cash surrender values of company-owned life insurance ("COLI") policies (including net death benefits recognized). These life insurance policies on members of management and other key employees are used by Southwest to indemnify itself against the loss of talent, expertise, and knowledge, as well as to provide indirect funding for certain nonqualified benefit plans. Current tax regulations provide for tax-free treatment of life insurance (death benefit) proceeds. Therefore, the change in the cash surrender value components of COLI policies, as they progress towards the ultimate death benefits, is also recorded without tax consequences. Pipe replacement costs include amounts associated with certain Arizona non-recoverable pipe replacement work. </div> </div> 2473000 21380000 -470000 1090000 1836000 134648000 192004000 <div> <div> Out-of-Period Adjustment.    In September 2011, the Company identified an isolated error in a regulatory deferral mechanism that overstated revenues by $3.7 million for periods prior to the third quarter of 2011. Management concluded the error was not material to any individual prior interim or annual period (or to the current annual period) and, therefore, the error was corrected during the third quarter of 2011. The effect was a decrease in revenues and regulatory assets of $ 3.7  million, of which $2.9 million pertains to years prior to 2011. </div> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="95%"> <tr><td width="49%"> </td> <td valign="bottom" width="12%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="12%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="12%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Year ended December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Year ended December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Year ended December 31, 2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Paid to counterparties</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">17,283</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">16,574</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">19,661</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Received from counterparties</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">831</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div> 3620000 2800000 2719000 0.075 0.05 0.54 0.10 0.36 2642000 5024000 4761000 <div> <div> <div> Note 6 - Preferred Trust Securities and Subordinated Debentures In June 2003, the Company created Southwest Gas Capital II ("Trust II"), a wholly owned subsidiary, as a financing trust for the sole purpose of issuing preferred trust securities for the benefit of the Company. In August 2003, Trust II publicly issued $100 million of 7.70% Preferred Trust Securities ("Preferred Trust Securities"). In connection with the Trust II issuance of the Preferred Trust Securities and the related purchase by the Company for $3.1 million of all of the Trust II common securities ("Common Securities"), the Company issued $103.1 million principal amount of its 7.70% Junior Subordinated Debentures ("Subordinated Debentures") to Trust II. The Subordinated Debentures became redeemable at the option of the Company in August 2008.   In February 2010, the Company notified holders of the Subordinated Debentures that all of these debentures (and the associated preferred and common securities) would be redeemed (at par) by the Company in March 2010. All of the outstanding Subordinated Debentures were redeemed in March 2010. The Company accomplished the redemption using existing cash and borrowings under the $300 million credit facility. Interest payments and amortizations associated with the Subordinated Debentures are classified on the consolidated statements of income as Net interest deductions on subordinated debentures. </div></div> </div> 7933000 4075000 7686000 75000000 -656000 11482000 621000 11122000 <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="16%"> </td> <td valign="bottom" width="3%"> </td> <td width="73%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom">December 31, 2011</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Prepaids and other current assets</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">11,122</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Deferred charges and other assets</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">621</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td height="16"> </td> <td height="16" colspan="2"> </td> <td height="16" colspan="4"> </td></tr> <tr><td valign="bottom">December 31, 2010</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Other deferred credits</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(656</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Prepaids and other current assets</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,482</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div> 40 30 <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="66%"> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Retirement plan</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">699,269</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">590,811</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> SERP</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">32,695</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30,725</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="79%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Outstanding and exercisable</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,697</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,186</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,695</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Exercised</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,949</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,689</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">294</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="87%"> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Allowance for Uncollectibles</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Balance, December 31, 2008</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,788</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Additions charged to expense</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,658</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accounts written off, less recoveries</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(6,493</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Balance, December 31, 2009</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,953</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Additions charged to expense</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,646</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Accounts written off, less recoveries</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(3,405</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Balance, December 31, 2010</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,194</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Additions charged to expense</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,678</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accounts written off, less recoveries</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,690</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Balance, December 31, 2011</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,182</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="44%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">SERP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">SERP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars)</td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Change in benefit obligations</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Benefit obligation for service rendered to date at beginning of year (PBO/PBO/APBO)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">662,134</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">31,860</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">46,765</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">606,276</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">35,339</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42,322</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Service cost</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,725</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">217</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">858</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,932</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">372</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">856</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Interest cost</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">37,276</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,766</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,631</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35,614</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,045</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,491</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Actuarial loss (gain)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">89,922</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,427</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,835</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">27,680</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(3,480</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,632</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Benefits paid</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(26,486</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,443</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(907</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(24,368</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,416</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,536</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Benefit obligation at end of year (PBO/PBO/APBO)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">780,571</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">33,827</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">52,182</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">662,134</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,860</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">46,765</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Change in plan assets</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Market value of plan assets at beginning of year</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">475,931</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">-</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29,640</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">392,975</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">-</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,511</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Actual return on plan assets</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,384</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">-</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(200</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">53,224</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">-</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,181</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Employer contributions</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">70,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,443</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">904</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">54,100</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,416</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,348</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Benefits paid</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(26,486</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,443</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(400</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(24,368</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,416</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(400</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Market value of plan assets at end of year</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">521,829</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">-</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29,944</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">475,931</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">-</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29,640</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Funded status at year end</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(258,742</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(33,827</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(22,238</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(186,203</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(31,860</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(17,125</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Weighted-average assumptions (benefit obligation)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Discount rate</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.00%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.00%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.00%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75%</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Weighted-average rate of compensation increase</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.00%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.00%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.00%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25%</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="95%"> <tr><td width="76%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Year Ended December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred federal and state:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Property-related items</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">51,710</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">43,420</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">46,201</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Purchased gas cost adjustments</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(92</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(315</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4,167</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Employee benefits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,766</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,753</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(452</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> All other deferred</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,070</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4,711</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,122</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Total deferred federal and state</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">62,314</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">47,147</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">43,704</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred ITC, net</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(868</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(868</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(868</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Total deferred income tax expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">61,446</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">46,279</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42,836</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="73%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Depreciation and amortization expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">172,712</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">167,050</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">162,240</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="66%"> </td> <td valign="bottom" width="15%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="15%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2003 Series A</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.83</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.20</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> 2008 Series A</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.62</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.72</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2009 Series A</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.56</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.68</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> Tax-exempt Series A</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.22</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.18</td> <td valign="bottom" nowrap="nowrap">% </td></tr></table> </div> <div> <table style="border-collapse: collapse;" class="MetaData" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="90%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Retirement plan net actuarial loss</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">    24,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> SERP net actuarial loss</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">700</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> PBOP net actuarial loss</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> PBOP transition obligation</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">870</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="54%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Assets at fair value (thousands of dollars):</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr><td valign="top"> Level 1 - Quoted prices in active markets for identical financial assets</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Cash equivalents</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">21</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">48</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">50</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Common stock</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Capital equipment</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,332</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">133</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,465</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,083</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">362</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,445</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Chemicals/materials</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,425</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">227</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,652</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,273</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">140</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,413</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Consumer goods</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">40,806</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,249</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">42,055</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35,491</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,158</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">36,649</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Energy and mining</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">39,080</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,196</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">40,276</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">34,530</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,127</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35,657</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Finance/insurance</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">23,808</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">729</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,537</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">27,097</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">884</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">27,981</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Healthcare</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">26,070</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">798</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">26,868</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,275</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">629</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,904</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Information technology</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29,052</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">889</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29,941</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">33,445</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,091</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">34,536</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Services</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,417</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">533</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,950</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20,570</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">671</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">21,241</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Telecommunications/utilities</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,257</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">498</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,755</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,172</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">397</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,569</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">22,473</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">688</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">23,161</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,917</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">519</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,436</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Real estate investment trusts</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,779</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">177</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,956</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,504</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">147</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,651</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Mutual funds</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">57,512</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,154</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">71,666</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">49,994</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,234</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">64,228</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Government fixed income</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,727</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">175</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,902</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,020</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">360</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,380</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Futures contracts</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(51</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(53</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total Level 1 Assets (1)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">295,762</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">21,447</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">317,209</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">279,368</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">21,719</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">301,087</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr><td valign="top"> Level 2 - Significant other observable inputs</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Government fixed income and mortgage backed</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42,361</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,297</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">43,658</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">39,201</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,279</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">40,480</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Corporate fixed income</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Asset-backed and mortgage-backed</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,969</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">519</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,488</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,014</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">457</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,471</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Banking</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,192</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">496</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,688</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,178</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">561</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,739</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Utilities</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,064</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">155</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,219</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,430</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">79</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,509</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,769</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">789</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">26,558</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20,575</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">671</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">21,246</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Pooled funds and mutual funds</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,447</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,244</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,691</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,230</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,974</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">10,204</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> State and local obligations</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">936</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">965</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">626</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">646</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total Level 2 assets (2)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">124,738</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">5,529</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">130,267</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">102,254</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">5,041</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">107,295</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Level 3 - Significant unobservable inputs</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Commingled equity funds</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">97,295</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,978</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">100,273</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">94,389</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,080</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">97,469</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Total Level 3 assets (3)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">97,295</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,978</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">100,273</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">94,389</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,080</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">97,469</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total Plan assets at fair value</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">517,795</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">29,954</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">547,749</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">476,011</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">29,840</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">505,851</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Guaranteed investment contracts/guaranteed annuity contracts (4)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,952</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,952</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,342</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,342</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total Plan assets (5)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">522,747</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">29,954</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">552,701</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">481,353</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">29,840</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">511,193</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table>   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(1)</td> <td valign="top" align="left"> Equity securities, Real Estate Investment Trusts, and U.S. Government securities listed or regularly traded on a national securities exchange are valued at quoted market prices as of the last business day of the calendar year. </td></tr></table> The mutual funds category above is an intermediate-term bond fund whose manager employs multiple concurrent strategies and takes only moderate risk in each, thereby reducing the risk of poor performance arising from any single source and a balanced fund that invests in a diversified portfolio of common stocks, preferred stocks and fixed-income securities. Strategies utilized by the bond fund include duration management, yield curve or maturity structuring, sector rotation, and all bottom-up techniques including in-house credit and quantitative research. Strategies employed by the balanced fund include pursuit of regular income, conservation of principal, and an opportunity for long-term growth of principal and income.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(2)</td> <td valign="top" align="left"> The fair value of investments in debt securities with remaining maturities of one year or more is determined by dealers who make markets in such securities or by an independent pricing service, which considers yield or price of bonds of comparable quality, coupon, maturity, and type. </td></tr></table> The pooled funds and mutual funds are two collective short-term funds that invest in Treasury bills and money market funds. These funds are used as a temporary cash repository for the pension plan's various investment managers.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(3)</td> <td valign="top" align="left"> Assets not considered Level 1 or Level 2 are valued using assumptions based on the best information available under the circumstances, such as investment manager pricing. </td></tr></table> The commingled equity funds include private equity funds that invest in international securities. These funds are shown in the above table at net asset value. Investment strategies employed by the funds include:   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td width="5%"> </td> <td valign="top" width="1%" align="left"></td> <td valign="top" width="1%"> </td> <td valign="top" align="left"> Investing in various industries with growth and reasonable valuations, avoiding highly cyclical industries </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td width="5%"> </td> <td valign="top" width="1%" align="left"></td> <td valign="top" width="1%"> </td> <td valign="top" align="left"> Diversification by country, limiting exposure in any one country </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td width="5%"> </td> <td valign="top" width="1%" align="left"></td> <td valign="top" width="1%"> </td> <td valign="top" align="left"> Emerging markets </td></tr></table>   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(4)</td> <td valign="top" align="left"> The guaranteed investment contracts/guaranteed annuity contracts are annuity insurance contracts used to pay the pensions of employees who retired prior to 1989. The balance of the account disclosed in the above table is the contract value, which is the result of deposits, withdrawals, and interest credits. </td></tr></table>   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(5)</td> <td valign="top" align="left"> The assets in the above table exceed the market value of plan assets shown in the funded status table by $928,000 (qualified retirement plan - $918,000, PBOP - $10,000) and $5.6 million (qualified retirement plan - $5.4 million, PBOP - $200,000) for 2011 and 2010, respectively, which includes a payable for securities purchased, partially offset by receivables for interest, dividends, and securities sold. </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="84%"> </td> <td valign="bottom" width="8%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Notional amount</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">100 million</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Fixed rate to be paid by Southwest</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4.78</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Mandatory termination date (on or before)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">March 20, 2012</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="90%"> <tr><td width="85%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Tax-related interest income</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">100</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">500</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">200</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="43%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center"> SERP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center"> PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom" colspan="8"> (Thousands of dollars)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Service cost</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">17,725</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">16,932</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">15,390</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">217</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">372</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">195</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">858</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">856</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">729</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Interest cost</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">37,276</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35,614</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">34,527</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,766</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,045</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,065</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,631</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,491</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,370</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Expected return on plan assets</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(40,114</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(36,538</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(35,221</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,379</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,093</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,603</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Amortization of prior service costs (credits)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amortization of transition obligation</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">867</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">867</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">867</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Amortization of net actuarial loss</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,348</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">10,478</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,253</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">631</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,155</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">909</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">590</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">489</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">434</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net periodic benefit cost</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">29,235</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">26,486</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">18,947</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,614</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,572</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,169</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,567</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,610</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,797</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Weighted-average assumptions (net benefit cost)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Discount rate</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6.75</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> Expected return on plan assets</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Weighted-average rate of compensation increase</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.75</td> <td valign="bottom" nowrap="nowrap">% </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td valign="top"> Percent of customers by state</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Arizona</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">54</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> Nevada</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">36</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr bgcolor="#cceeff"><td valign="top"> California</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">10</td> <td valign="bottom" nowrap="nowrap">% </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="96%"> <tr><td width="66%"> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">December 31, 2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">December 31, 2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accumulated removal costs</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">233,000 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">211,000 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="80%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Regulatory assets:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Accrued pension and other postretirement benefit costs (1)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">330,844</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">224,913</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Unrealized loss on non-trading derivatives (Swaps) (2)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,743</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,482</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Deferred purchased gas costs (3)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,323</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">356</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accrued purchased gas costs (4)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">18,400</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Unamortized premium on reacquired debt (5)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,011</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,881</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Other (6)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">32,988</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">28,402</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">415,309</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">299,034</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Regulatory liabilities:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Deferred purchased gas costs (3)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(72,426</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(123,344</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accumulated removal costs</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(233,000</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(211,000</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Unrealized gain on non-trading derivatives (Swaps) (2)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(656</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred gain on southern Nevada division operations facility (7)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(806</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,246</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Rate refunds due customers (8)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(546</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Unamortized gain on reacquired debt (9)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(12,470</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(13,006</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Other (10)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(14,501</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,811</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net regulatory assets (liabilities)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">82,106</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(53,575</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table>   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(1)</td> <td valign="top" align="left"> Included in Deferred charges and other assets on the Consolidated Balance Sheets. Recovery period is greater than five years. (See Note 10). </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(2)</td> <td valign="top" align="left"> The following table details the regulatory assets/(liabilities) offsetting the derivatives (Swaps) at fair value in the balance sheets (thousands of dollars). The actual amounts, when realized at settlement, become a component of purchased gas costs under the Company's purchased gas adjustment ("PGA") mechanisms. (See Note 13). </td></tr></table>   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="44%"> </td> <td valign="bottom" width="4%"> </td> <td width="39%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Deferred charges and other assets</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">621</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Prepaids and other current assets</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,122</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,482</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Other deferred credits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(656</td> <td valign="bottom" nowrap="nowrap">) </td></tr></table>   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(3)</td> <td valign="top" align="left"> Balance recovered or refunded on an ongoing basis with interest. </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(4)</td> <td valign="top" align="left"> Included in Prepaids and other current assets on the Consolidated Balance Sheets and recovered over one year or less. </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(5)</td> <td valign="top" align="left"> Included in Deferred charges and other assets on the Consolidated Balance Sheets. Recovered over life of debt instruments. </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(6)</td> <td valign="top" align="left"> Other regulatory assets including deferred costs associated with rate cases, regulatory studies, and state mandated public purpose programs (including low income and conservation programs), as well as margin and interest-tracking accounts, amounts associated with accrued absence time, and deferred post-retirement benefits other than pensions. Recovery periods vary. </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(7)</td> <td valign="top" align="left"> Balance recovered over a four-year period beginning in the fourth quarter of 2009. </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(8)</td> <td valign="top" align="left"> Included in Other current liabilities on the Consolidated Balance Sheet. </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(9)</td> <td valign="top" align="left"> Included in Other deferred credits on the Consolidated Balance Sheet. Amortized over life of debt instruments. </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(10)</td> <td valign="top" align="left"> Other regulatory liabilities includes amounts associated with income tax and gross-up. </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="53%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2012</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2013</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2014</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2015</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2016</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2017</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (In thousands)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Corporate headquarters (expires in 2017)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,100</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,140</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,190</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,270</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,343</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,194</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Phoenix administrative offices (expires in 2014)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,396</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,446</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">243</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div> 87482000 8062000 79420000 103877000 12495000 91382000 112287000 20867000 91420000 1000000 24.46 29.04 11000 5000 <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="66%"> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Assets at fair value:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Deferred charges and other assets - swaps</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">656</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Liabilities at fair value:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Other current liabilities - swaps</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,122</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,482</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Other deferred credits - swaps</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(621</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other current liabilities - FSIRS</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(24,713</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Other deferred credits - FSIRS</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(6,755</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Net Assets (Liabilities)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(36,456</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(17,581</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="49%"> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Market value of Southwest Gas stock</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42.49</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">36.67</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">28.53</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="85%"> <tr><td width="88%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Tax-related interest receivable (payable)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(100</td> <td valign="bottom" nowrap="nowrap">) </td></tr></table> </div> 1234000 828000 29469000 20627000 2797000 6045000 28085000 26538000 2610000 -1063000 47541000 40564000 2567000 4410000 15436000 7468000 31547000 13594000 58574000 17474000 27295000 84485000 20518000 11968000 50000000 50000000 50000000 50000000 15634000 8253000 31332000 14449000 64291000 19583000 30283000 94836000 23179000 12410000 50000000 50000000 50000000 50000000

165536000

186755000

147605000

209246000

40438000

42102000

6860000

5992000

-11376000

-21785000

-19408000

-27546000

-30784000

-49331000

807885000

821640000

216985000

4066000

212919000

215439000

27060000

188379000

380991000

75449000

305542000

5194000

5874000

7262000

3788000

3953000

3194000

3182000

<div> <div> Allowance for Funds Used During Construction ("AFUDC").    AFUDC represents the cost of both debt and equity funds used to finance utility construction. AFUDC is capitalized as part of the cost of utility plant. The debt portion of AFUDC is reported in the consolidated statements of income as an offset to net interest deductions and the equity portion is reported as other income. Utility plant construction costs, including AFUDC, are recovered in authorized rates through depreciation when completed projects are placed into operation, and general rate relief is requested and granted.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="79%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2009 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr><td valign="bottom"> (In thousands)</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> AFUDC:</td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Debt portion</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">718 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">512 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">957 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Equity portion</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">1,154 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">945 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">1,221 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr> <tr><td valign="top"> AFUDC capitalized as part of utility plant</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">1,872 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">1,457 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">2,178 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table></div> </div>

3984193000

4276007000

445894000

461632000

2291677000

2155889000

26399000

65315000

116096000

21937000

38916000

50781000

-94159000

<div> <div> Cash and Cash Equivalents.    For purposes of reporting consolidated cash flows, cash and cash equivalents include cash on hand and financial instruments with a purchase-date maturity of three months or less. </div> </div>

6755000

24713000

6755000

24713000

0.95

1.06

60000000

45599036

45956088

44192000

45092000

45599036

45599

45956088

45956000

47229000

47586000

84658000

95343000

93740000

-364000

-424000

-524000

84294000

94919000

93216000

<div> Note 5 – Other Comprehensive Income and Accumulated Other Comprehensive Income ("AOCI") The following represents a rollforward of AOCI, presented on the Company's Consolidated Balance Sheets and its Consolidated Statements of Equity:   <div class="MetaData"> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="39%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> AOCI - Rollforward (Thousands of dollars)  </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">Defined Benefit Plans (Note 10)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">FSIRS (Note 13)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" rowspan="2" colspan="2" align="center"> AOCI</td> <td valign="bottom" rowspan="2"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Before- Tax</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Tax (Expense) Benefit</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">After- Tax</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Before- Tax</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Tax (Expense) Benefit</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">After-Tax</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Beginning Balance AOCI December 31, 2010</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(31,304</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">11,896</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(19,408</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(18,349</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6,973</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(11,376</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(30,784</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Current period other comprehensive income (loss)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(13,125</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,987</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(8,138</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(16,789</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,380</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(10,409</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(18,547</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Ending Balance AOCI December 31, 2011</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(44,429</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">16,883</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(27,546</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(35,138</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">13,353</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(21,785</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(49,331</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table></div> Approximately $1.9 million of realized losses (net of tax) related to the FSIRS reported in AOCI at December 31, 2011 will be reclassified into expense within the next twelve months as the related interest payments on long-term debt occur. The information below provides insight into amounts impacting Other Comprehensive Income (Loss), before and after- tax impacts, within the Consolidated Statements of Comprehensive Income, which also impact Accumulated Other Comprehensive Income in the Company's Consolidated Balance Sheets and Consolidated Statements of Equity.   Related Tax Effects Allocated to Each Component of Other Comprehensive Income (Loss)   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="29%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Before- Tax Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Tax (Expense) or Benefit (1)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net-of- Tax Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Before- Tax Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center"> Tax (Expense) or Benefit (1)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center"> Net-of- Tax Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center"> Before- Tax Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Tax (Expense) or Benefit (1)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net-of- Tax Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars)</td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Defined benefit pension plans:</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Net actuarial gain/(loss)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(135,492</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">51,487</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(84,005</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(9,058</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,442</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(5,616</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(26,448</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">10,050</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(16,398</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amortization of prior service credit</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Amortization of transition obligation</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">867</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(330</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">537</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">867</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(329</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">538</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">867</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(329</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">538</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amortization of net loss</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,569</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(5,916</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">9,653</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,122</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4,606</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,516</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,596</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,126</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,470</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Regulatory adjustment</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">105,931</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(40,254</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">65,677</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">652</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(248</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">404</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,431</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(5,864</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">9,567</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Pension plans other comprehensive income (loss)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(13,125</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,987</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(8,138</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,583</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,741</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,842</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4,556</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,732</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,824</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> FSIRS (designated hedging activities):</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Unrealized/realized loss</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(17,958</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,824</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,134</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(18,446</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,010</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,436</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Amounts reclassified into net income</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,169</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(444</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">725</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">97</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(37</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">60</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> FSIRS other comprehensive income (loss)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(16,789</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,380</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(10,409</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(18,349</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,973</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,376</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Total other comprehensive income (loss)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(29,914</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">11,367</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(18,547</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(13,766</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">5,232</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(8,534</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(4,556</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,732</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(2,824</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> (1) Tax amounts are calculated using a 38% rate. The estimated amounts that will be amortized from accumulated other comprehensive income or regulatory assets into net periodic benefit cost over the next year are summarized below (in thousands):   <table style="border-collapse: collapse;" class="MetaData" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="90%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Retirement plan net actuarial loss</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">    24,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> SERP net actuarial loss</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">700</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> PBOP net actuarial loss</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> PBOP transition obligation</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">870</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> See Note 10 – Pension and Other Postretirement Benefits for more information on the defined benefit pension plans and Note 13 – Derivatives and Fair Value Measurements for more information on the FSIRS. </div>

<div> <div> Consolidation.    The accompanying financial statements are presented on a consolidated basis and include the accounts of Southwest Gas Corporation and all subsidiaries. All significant intercompany balances and transactions have been eliminated with the exception of transactions between Southwest and NPL in accordance with accounting treatment for rate-regulated entities. </div> </div>

242461000

277804000

423703000

278981000

318464000

483822000

<div> <div> Net Cost of Gas Sold.     Components of net cost of gas sold include natural gas commodity costs (fixed-price and variable-rate), pipeline capacity/transportation costs, and actual settled costs of natural gas derivative instruments. Also included are the net impacts of PGA deferrals and recoveries. </div> </div>

1685433000

1598254000

1637108000

-1020000

4204000

-265000

2081000

8646000

1857000

3101000

4442000

2122000

86891000

83839000

1199761000

1253476000

103100000

0.0118

0.0272

0.0268

0.0120

0.0222

0.0162

0.0156

0.0083

0.061

0.0445

0.08375

0.08

0.0759

0.0792

0.0778

0.0676

0.08375

0.0445

0.07625

0.061

0.058

0.0555

0.0545

0.0595

0.0525

0.05

0.0485

0.0475

0.061

2041-02-01

2020-12-01

2012-05-01

3502000

2534000

3360000

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41410000

44778000

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3743000

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0.06

0.05

0.0575

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606276000

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-53000

19904000

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21246000

12569000

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97469000

279368000

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3080000

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457000

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11083000

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4273000

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1127000

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-2000

19275000

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397000

2430000

79000

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94389000

3080000

8230000

1974000

626000

20000

11020000

360000

547749000

317209000

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100273000

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517795000

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23161000

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4465000

7652000

42055000

40276000

24537000

4000

26868000

29941000

71666000

5956000

17950000

26558000

16755000

5219000

43658000

21000

100273000

295762000

21447000

124738000

5529000

97295000

2978000

19691000

4952000

965000

5902000

22473000

688000

16969000

519000

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496000

4332000

133000

7425000

227000

40806000

1249000

39080000

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23808000

729000

4000

26070000

798000

29052000

889000

57512000

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177000

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533000

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498000

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936000

29000

5727000

175000

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0.0478

March 2014

-18446000

-17958000

4391000

27690000

18201000

-6755000

-17958000

4391000

27690000

18201000

11691000

11482000

6755000

24713000

11122000

621000

January 2012

2012-03-20

<div> Note 13 – Derivatives and Fair Value Measurements Derivatives.    In managing its natural gas supply portfolios, Southwest has historically entered into fixed- and variable-price contracts, which qualify as derivatives. Additionally, Southwest utilizes fixed-for-floating swap contracts ("Swaps") to supplement its fixed-price contracts. The fixed-price contracts, firm commitments to purchase a fixed amount of gas in the future at a fixed price, qualify for the normal purchases and normal sales exception that is allowed for contracts that are probable of delivery in the normal course of business and are exempt from fair value reporting. The variable-price contracts have no significant market value. The Swaps are recorded at fair value. The fixed-price contracts and Swaps are utilized by Southwest under its volatility mitigation programs to effectively fix the price on a portion (currently ranging from 25% to 35%, depending on the jurisdiction) of its natural gas supply portfolios. The maturities of the Swaps highly correlate to forecasted purchases of natural gas, during time frames ranging from January 2012 through March 2014. Under such contracts, Southwest pays the counterparty at a fixed rate and receives from the counterparty a floating rate per MMBtu ("dekatherm") of natural gas. Only the net differential is actually paid or received. The differential is calculated based on the notional amounts under the contracts, which are detailed in the table below (thousands of dekatherms):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="66%"> </td> <td valign="bottom" width="12%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="12%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Contract notional amounts</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">10,827</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,207</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> Southwest does not utilize derivative financial instruments for speculative purposes, nor does it have trading operations. The following table sets forth the gains and (losses) recognized on the Company's Swaps (derivatives) for the years ended December 31, 2011, 2010, and 2009 and their location in the income statements (thousands of dollars): Gains (losses) recognized in income for derivatives not designated as hedging instruments:   <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="17%"> </td> <td valign="bottom" width="2%"> </td> <td width="58%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom" nowrap="nowrap">Instrument                </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Location of Gain or (Loss) Recognized in Income on Derivative</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Net cost of gas sold</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(18,201</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(27,690</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(4,391</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Net cost of gas sold</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">18,201 </td> <td valign="bottom" nowrap="nowrap">* </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">27,690 </td> <td valign="bottom" nowrap="nowrap">* </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,391 </td> <td valign="bottom" nowrap="nowrap">* </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> * Represents the impact of regulatory deferral accounting treatment under U.S. GAAP for rate-regulated entities. </div> In January 2010, Southwest entered into two FSIRS to hedge the risk of interest rate variability during the period leading up to the planned issuance of fixed-rate debt to replace $200 million of debt that matured in February 2011 and $200 million maturing in May 2012. The counterparties to each agreement are four major banking institutions. The first FSIRS was a designated cash flow hedge and terminated in December 2010 concurrent with the related issuance of $125 million 4.45% 10-year Senior Notes. The terms of the remaining FSIRS are as follows:   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="84%"> </td> <td valign="bottom" width="8%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Notional amount</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">100 million</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Fixed rate to be paid by Southwest</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4.78</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Mandatory termination date (on or before)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">March 20, 2012</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> Southwest has designated the second FSIRS agreement as a cash flow hedge of forecasted future interest payments. At the inception of the hedge, the terms of the derivative were the same as a perfect hypothetical derivative; thus, there was an expectation that there will be no ineffectiveness, and that the effective portion of unrealized gains and losses on the FSIRS leading up to the forecasted debt issuance will be reported as a component of other comprehensive income. At termination, the final value will be reclassified from accumulated other comprehensive income into earnings over the same period the hedged forecasted transaction affects earnings. However, should conditions occur that indicate the existence of ineffectiveness (e.g., deterioration of counterparty creditworthiness, delay in the forecasted debt issuances, etc.), Southwest will measure ineffectiveness by comparing changes in the fair value of the FSIRS with the change in the fair value of a hypothetical swap (the hypothetical derivative method). Gains and losses due to ineffectiveness will be recognized immediately in earnings. At December 31, 2011, the remaining FSIRS continued to qualify as an effective hedge. There was no gain or loss reclassified from accumulated other comprehensive income ("AOCI") into income (effective portion) and no gain or loss recognized in income (ineffective portion) for the Company's remaining derivative designated as a hedging instrument. The following table sets forth the gains and (losses) on a before-tax basis recognized on the Company's FSIRS (thousands of dollars): Gains (losses) recognized in other comprehensive income for derivatives designated as cash flow hedging instruments:   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="64%"> </td> <td valign="bottom" width="12%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="12%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Year Ended December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Year Ended December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amount of loss on unrealized FSIRS recognized in other comprehensive income on derivative (effective portion)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(17,958</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(6,755</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Amount of loss on realized FSIRS recognized in other comprehensive income on derivative</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,691</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(17,958</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(18,446</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> The following table sets forth the fair values of the Company's Swaps and FSIRS and their location in the balance sheets (thousands of dollars): <div class="MetaData"> Fair values of derivatives not designated as hedging instruments:   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="25%"> </td> <td valign="bottom" width="4%"> </td> <td width="44%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31, 2011 Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Asset Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Liability Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Other current liabilities</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(11,122</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(11,122</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Other deferred credits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(621</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(621</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(11,743</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(11,743</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="2"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31, 2010 Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Asset Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Liability Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Deferred charges and other assets</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">656</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">656</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Other current liabilities</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">65</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,547</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,482</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">721</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(11,547</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(10,826</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table>   Fair values of derivatives designated as hedging instruments:   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="25%"> </td> <td valign="bottom" width="4%"> </td> <td width="45%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31, 2011 Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Asset Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Liability Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> FSIRS</td> <td valign="bottom">  </td> <td valign="bottom">Other current liabilities</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(24,713</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(24,713</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="2"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31, 2010 Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Asset Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Liability Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> FSIRS</td> <td valign="bottom">  </td> <td valign="bottom">Other deferred credits</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(6,755</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(6,755</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table></div> The estimated fair values of the Swaps were determined using future natural gas index prices (as more fully described below). The Company has master netting arrangements with each counterparty that provide for the net settlement of all contracts through a single payment. As applicable, the Company has elected to reflect the net amounts in its balance sheets. Pursuant to regulatory deferral accounting treatment for rate-regulated entities, Southwest records the unrealized gains and losses in fair value of the Swaps as a regulatory asset and/or liability. When the Swaps mature, Southwest reverses any prior positions held and records the settled position as an increase or decrease of purchased gas under the related purchased gas adjustment ("PGA") mechanism in determining its deferred PGA balances. Neither changes in fair value, nor settled amounts, of Swaps have a direct effect on earnings or other comprehensive income. The following table shows the amounts Southwest paid to and received from counterparties for settlements of matured Swaps.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="95%"> <tr><td width="49%"> </td> <td valign="bottom" width="12%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="12%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="12%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Year ended December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Year ended December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Year ended December 31, 2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Paid to counterparties</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">17,283</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">16,574</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">19,661</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Received from counterparties</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">831</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> The following table details the regulatory assets/(liabilities) offsetting the derivatives at fair value in the balance sheets (thousands of dollars).   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="16%"> </td> <td valign="bottom" width="3%"> </td> <td width="73%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom">December 31, 2011</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Prepaids and other current assets</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">11,122</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Deferred charges and other assets</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">621</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td height="16"> </td> <td height="16" colspan="2"> </td> <td height="16" colspan="4"> </td></tr> <tr><td valign="bottom">December 31, 2010</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Other deferred credits</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(656</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Prepaids and other current assets</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,482</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> Fair Value Measurements.    The estimated fair values of Southwest's Swaps were determined at December 31, 2011 and 2010 using New York Mercantile Exchange ("NYMEX") futures settlement prices for delivery of natural gas at Henry Hub, adjusted by the price of NYMEX ClearPort basis Swaps, which reflect the difference between the price of natural gas at a given delivery basin and the Henry Hub pricing points. These Level 2 inputs are observable in the marketplace throughout the full term of the Swaps, but have been credit-risk adjusted with no significant impact to the overall fair value measure.   The estimated fair value of Southwest's FSIRS was determined using a discounted cash flow model that utilizes forward interest rate curves. The inputs to the model are the terms of the FSIRS. These Level 2 inputs are observable in the marketplace throughout the full term of the FSIRS, but have been credit-risk adjusted with no significant impact to the overall fair value measure. See Note 5 – Other Comprehensive Income and Accumulated Other Comprehensive Income for more information on the FSIRS. See Note 10 – Pension and Other Postretirement Benefits for definitions of the levels of the fair value hierarchy. The following table sets forth, by level within the three-level fair value hierarchy that ranks the inputs used to measure fair value by their reliability, the Company's financial assets and liabilities that were accounted for at fair value: Level 2 - Significant other observable inputs   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="66%"> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Assets at fair value:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Deferred charges and other assets - swaps</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">656</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Liabilities at fair value:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Other current liabilities - swaps</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,122</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,482</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Other deferred credits - swaps</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(621</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other current liabilities - FSIRS</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(24,713</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Other deferred credits - FSIRS</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(6,755</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Net Assets (Liabilities)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(36,456</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(17,581</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> No financial assets or liabilities accounted for at fair value fell within Level 1 or Level 3 of the fair value hierarchy. </div>

43148000

46062000

49293000

1.13

1.95

-0.01

-0.18

1.03

1.43

2.29

-0.02

-0.11

0.99

1.50

2.45

0.09

-0.34

1.20

1.12

1.94

-0.01

-0.18

1.02

1.42

2.27

-0.02

-0.11

0.98

1.48

2.43

0.09

-0.34

1.19

<div> <div> Earnings Per Share.     Basic earnings per share ("EPS") are calculated by dividing net income by the weighted-average number of shares outstanding during the period. Diluted EPS includes the effect of additional weighted-average common stock equivalents (stock options, performance shares, and restricted stock units). Unless otherwise noted, the term "Earnings Per Share" refers to Basic EPS. A reconciliation of the shares used in the Basic and Diluted EPS calculations is shown in the following table. Net income was the same for Basic and Diluted EPS calculations.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="79%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2009 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr><td valign="bottom"> (In thousands)</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Average basic shares</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,858 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,405 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">44,752 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr><td valign="top"> Effect of dilutive securities:</td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Stock options</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">52 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">56 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">14 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr><td valign="top"> Performance shares</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">271 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">260 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">216 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Restrictled stock units</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">110 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">102 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">80 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr> <tr><td valign="top"> Average diluted shares</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">46,291 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,823 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,062 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table></div> </div>

0.340

0.347

0.362

0.35

-0.003

-0.002

-0.001

0.025

0.028

0.027

-0.007

-0.005

-0.006

-0.002

-0.003

-0.009

5400000

3184000

3600000

4451000

702000

13090000

-8442000

6500000

12000000

-1000000

77879000

97469000

100273000

3291000

1547000

3307000

132035000

158378000

175066000

<div> Note 12 - Income Taxes The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction, and various states. The Company is subject to examinations by the Internal Revenue Service for years after 2007, and is subject to examination by the various state taxing authorities for years after 2006. The Company recognizes interest expense and income and penalties related to income tax matters in income tax expense. Tax-related interest income included in income tax expense in the consolidated statements of income is shown in the table below (in thousands):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="90%"> <tr><td width="85%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Tax-related interest income</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">100</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">500</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">200</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> Tax-related interest receivable and payable included in the consolidated balance sheets are shown in the table below (in thousands):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="85%"> <tr><td width="88%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Tax-related interest receivable (payable)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(100</td> <td valign="bottom" nowrap="nowrap">) </td></tr></table> As shown in the table below, the Company had no uncertain tax liabilities at December 31, 2011. Due to the lapse of the statute of limitations, the balance of unrecognized tax benefits at the beginning of the year was eliminated and favorably impacted the effective tax rate during 2011. The Company expects no change in unrecognized tax benefits in the next twelve months.   A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="86%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Unrecognized tax benefits at beginning of year</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,445</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,445</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Gross increases – tax positions in prior period</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Gross decreases – tax positions in prior period</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Gross increases – current period tax positions</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Gross decreases – current period tax positions</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Settlements</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Lapse of statute of limitations</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,445</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Unrecognized tax benefits at end of year</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,445</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> Income tax expense (benefit) consists of the following (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="90%"> <tr><td width="76%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Year Ended December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Current:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Federal</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(265</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,204</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(1,020</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> State</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,122</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,442</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,101</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,857</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,646</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,081</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Federal</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">58,584</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">44,778</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">41,410</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> State</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,862</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,501</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,426</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">61,446</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">46,279</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">42,836</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total income tax expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">63,303</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">54,925</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">44,917</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> Deferred income tax expense (benefit) consists of the following significant components (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="95%"> <tr><td width="76%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Year Ended December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred federal and state:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Property-related items</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">51,710</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">43,420</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">46,201</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Purchased gas cost adjustments</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(92</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(315</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4,167</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Employee benefits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,766</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,753</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(452</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> All other deferred</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,070</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4,711</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,122</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Total deferred federal and state</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">62,314</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">47,147</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">43,704</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred ITC, net</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(868</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(868</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(868</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Total deferred income tax expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">61,446</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">46,279</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42,836</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table>   The consolidated effective income tax rate for the period ended December 31, 2011 and the two prior periods differ from the federal statutory income tax rate. The sources of these differences and the effect of each are summarized as follows:   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="95%"> <tr><td width="85%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Year Ended December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Federal statutory income tax rate</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35.0</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35.0</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35.0</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> Net state taxes</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.7</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.8</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.5</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Property-related items</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.2</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Effect of income tax settlements</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.9</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.3</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.2</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Tax credits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.6</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.5</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.7</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Company owned life insurance</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.1</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2.3</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2.5</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> All other differences</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.1</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.2</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.3</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Consolidated effective income tax rate</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">36.2</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">34.7</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">34.0</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> Deferred tax assets and liabilities consist of the following (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="95%"> <tr><td width="82%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred tax assets:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Deferred income taxes for future amortization of ITC</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,743</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,280</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Employee benefits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,605</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,384</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Alternative minimum tax credit</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,411</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,495</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net operating losses and credits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">59,096</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Interest rate swap</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">13,352</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,973</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Other</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,099</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,026</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Valuation allowance</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(142</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">133,164</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">66,158</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Deferred tax liabilities:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Property-related items, including accelerated depreciation</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">611,022</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">500,216</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Regulatory balancing accounts</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">743</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">836</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Property-related items previously flowed through</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,797</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,910</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Unamortized ITC</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,992</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,860</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Debt-related costs</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,379</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,824</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,914</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,094</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">636,847</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">524,740</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Net deferred tax liabilities</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">503,683</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">458,582</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Current</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(53,435</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(8,046</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Noncurrent</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">557,118</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">466,628</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net deferred tax liabilities</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">503,683</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">458,582</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> At December 31, 2011, the Company has a federal net operating loss carryforward of $169 million and a federal general business credit carryforward of $231,000, both of which expire in 2031. The Company also has a net capital loss carryforward of $323,000 and a charitable contribution carryforward of $742,000, both of which expire in 2016. </div>

-21616000

19200000

-13635000

21514000

7793000

-100000

6000

200000

500000

100000

44917000

4466000

40451000

54925000

7852000

47073000

63303000

13727000

49576000

<div> <div> Income Taxes.    The Company uses the asset and liability method of accounting for income taxes. Under the asset and liability method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the period that includes the enactment date. For regulatory and financial reporting purposes, investment tax credits ("ITC") related to gas utility operations are deferred and amortized over the life of related fixed assets. </div> </div>

-32578000

6680000

15826000

-11107000

-10117000

61641000

1221000

945000

1154000

-56902000

-33013000

52885000

15553000

12262000

-11025000

-32733000

-12895000

3347000

10366000

-17474000

-36378000

-900000

-7300000

5900000

22497000

-15240000

14979000

2900000

3700000

49769000

-11988000

-24996000

14000

56000

52000

80000

102000

110000

216000

260000

271000

75270000

75677000

69602000

825000

68777000

7731000

1912000

271000

194000

485000

80771000

87000000

69842000

20162000

16699000

1900000

271000

82000

189000

194000

36000

158000

485000

20000

465000

-868000

3984193000

4276007000

596961000

847568000

8546000

9770000

700000

109000000

300000000

May 2012

109000000

121000000

300000000

<div> <div> <div> Note 3 - Receivables and Related Allowances Business activity with respect to gas utility operations is conducted with customers located within the three-state region of Arizona, Nevada, and California. The table below contains information about the gas utility customer accounts receivable balance at December 31, 2011, and the percentage of customers in each of the three states.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="91%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Gas utility customer accounts receivable balance (in thousands)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">124,794</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table></div> <div> </div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td valign="top"> Percent of customers by state</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Arizona</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">54</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> Nevada</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">36</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr bgcolor="#cceeff"><td valign="top"> California</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">10</td> <td valign="bottom" nowrap="nowrap">% </td></tr></table> Although the Company seeks to minimize its credit risk related to utility operations by requiring security deposits from new customers, imposing late fees, and actively pursuing collection on overdue accounts, some accounts are ultimately not collected. Customer accounts are subject to collection procedures that vary by jurisdiction (late fee assessment, noticing requirements for disconnection of service, and procedures for actual disconnection and/or reestablishment of service). After disconnection of service, accounts are generally written off approximately one month after inactivation. Dependent upon the jurisdiction, reestablishment of service requires both payment of previously unpaid balances and additional deposit requirements. Provisions for uncollectible accounts are based on experience and recorded monthly, as needed. They are included in the ratemaking process as a cost of service. Beginning in November 2009, a regulatory mechanism was implemented in the Nevada jurisdictions associated with the gas cost-related portion of uncollectible accounts. Such amounts are deferred and collected through a surcharge in the ratemaking process. Activity in the allowance account for uncollectibles is summarized as follows (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="87%"> </td> <td valign="bottom" width="9%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Allowance for Uncollectibles</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Balance, December 31, 2008</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,788</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Additions charged to expense</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,658</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accounts written off, less recoveries</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(6,493</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Balance, December 31, 2009</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,953</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Additions charged to expense</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,646</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Accounts written off, less recoveries</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(3,405</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Balance, December 31, 2010</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,194</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Additions charged to expense</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,678</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accounts written off, less recoveries</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,690</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Balance, December 31, 2011</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,182</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table></div></div> </div>

75080000

322618000

1084000

1271000

17805000

1124681000

930858000

<div> <div> Note 7 – Long-Term Debt   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="58%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="6" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="6" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Carrying Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Market Value</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Carrying Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Market Value</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Debentures:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Notes, 8.375%, due 2011</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">200,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">201,560</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Notes, 7.625%, due 2012</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">200,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">204,312</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">200,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">  214,666</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Notes, 4.45%, due 2020</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">125,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">128,673</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">125,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">125,325</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Notes, 6.1%, due 2041</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">125,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">  143,074</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 8% Series, due 2026</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">75,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">96,340</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">75,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">99,968</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Medium-term notes, 7.59% series, due 2017</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30,199</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30,295</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Medium-term notes, 7.78% series, due 2022</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,932</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">32,063</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Medium-term notes, 7.92% series, due 2027</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,648</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">33,211</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Medium-term notes, 6.76% series, due 2027</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,500</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,510</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,500</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,956</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Unamortized discount</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,087</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,534</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">605,413</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">679,966</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Revolving credit facility and commercial paper, due 2012</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">109,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">109,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Industrial development revenue bonds:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Variable-rate bonds:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Tax-exempt Series A, due 2028</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2003 Series A, due 2038</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 2008 Series A, due 2038</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2009 Series A, due 2039</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Fixed-rate bonds:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 6.10% 1999 Series A, due 2038</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,410</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,410</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,410</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,968</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 5.95% 1999 Series C, due 2038</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,320</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,449</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,320</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">13,594</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 5.55% 1999 Series D, due 2038</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,270</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,253</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,270</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,468</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 5.45% 2003 Series C, due 2038 (rate resets in 2013)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,332</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,547</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 5.25% 2003 Series D, due 2038</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,583</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,474</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 5.80% 2003 Series E, due 2038 (rate resets in 2013)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,634</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,436</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 5.25% 2004 Series A, due 2034</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">65,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">64,291</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">65,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">58,574</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 5.00% 2004 Series B, due 2033</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,200</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30,283</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,200</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">27,295</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 4.85% 2005 Series A, due 2035</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">  100,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">94,836</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">  100,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">84,485</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 4.75% 2006 Series A, due 2036</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,855</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">23,179</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,855</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20,518</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Unamortized discount</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(3,360</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(3,502</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">517,695</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">517,553</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> NPL debt obligations</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">21,368</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">21,380</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,242</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,473</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">  1,253,476</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,199,761</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Less: current maturities</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(322,618</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(75,080</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Long-term debt, less current maturities</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">930,858</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">  1,124,681</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr></table>   The Company has a $300 million credit facility that expires in May 2012. The Company has designated $150 million for long-term purposes and the remaining $150 million for working capital purposes. Interest rates for the facility are calculated at either the London Interbank Offering Rate plus an applicable margin, or the greater of the prime rate or one-half of one percent plus the Federal Funds rate. At December 31, 2011, $109 million was outstanding on the credit facility and is reflected as current maturities of the long-term debt in the schedule above. Borrowings under the credit facility ranged from $0 for the first eight months of the year to a maximum of $121 million during December 2011. The effective interest rate on the long-term portion of the credit facility was 0.7% at December 31, 2011. There were no borrowings outstanding on the short-term portion of the credit facility at December 31, 2010 and 2011. (See Note 8 – Short-Term Debt). Management intends to refinance its borrowing capacity under the facility during the first quarter of 2012. In January 2012, the Company redeemed its $12.4 million 1999 6.1% Series A fixed-rate IDRBs at par originally due in 2038. These IDRBs are shown as current maturities in the schedule above. In November 2010, the Company entered into a note purchase agreement with Metropolitan Life Insurance Company, John Hancock Life Insurance Company (U.S.A.), certain of their respective affiliates, and Union Fidelity Life Insurance Company (collectively, the "Purchasers"), pursuant to which the Company agreed to issue $125 million of 6.1% Senior Notes to the Purchasers. In February 2011, the Company issued $125 million of 6.1% Senior Notes pursuant to the agreement and used the proceeds to partially redeem the 8.375% debentures that matured in February 2011. The Senior Notes are unsecured and unsubordinated obligations of the Company, due in February 2041. In December 2010, the Company issued $125 million in 4.45% Senior Notes due December 2020 at a 0.182% discount. The notes will mature on December 1, 2020. In February 2011, the Company used $75 million of the proceeds to repay a portion of the $200 million 8.375% Notes; the remaining net proceeds were used for general corporate purposes. In December 2009, the Company issued $50 million in Clark County, Nevada variable-rate 2009 Series A IDRBs, supported by a letter of credit with JPMorgan Chase Bank. At December 31, 2010 and 2011, $37.8 million and $12.8 million, respectively, in proceeds from the issuance of IDRBs remained in trust and are shown as restricted cash on the consolidated balance sheets. The remaining $12.8 million in trust funds were drawn in February 2012. The $200 million 7.625% notes due in May 2012 are shown as current maturities, but are expected to be refinanced before the maturity date. See Note 13 – Derivatives and Fair Value Measurements. The effective interest rates on the variable-rate IDRBs are included in the table below:   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="66%"> </td> <td valign="bottom" width="15%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="15%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2003 Series A</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.83</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.20</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> 2008 Series A</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.62</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.72</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2009 Series A</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.56</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.68</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> Tax-exempt Series A</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.22</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.18</td> <td valign="bottom" nowrap="nowrap">% </td></tr></table> In Nevada, interest fluctuations due to changing interest rates on the 2003 Series A and 2008 Series A variable-rate IDRBs are tracked and recovered from ratepayers through an interest balancing account. The 2009 Series A IDRBs were issued after the effective date of the last Nevada general rate case and, therefore, related interest fluctuations for that Series are not part of the tracking mechanism. The fair values of the revolving credit facility and the variable-rate IDRBs approximate carrying value. Market values for the debentures, fixed-rate IDRBs, and other indebtedness were determined based on dealer quotes using trading records for December 31, 2011 and 2010, as applicable, and other secondary sources which are customarily consulted for data of this kind.   Estimated maturities of long-term debt for the next five years are (in thousands):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="30%" align="center"> <tr><td width="80%"> </td> <td valign="bottom" width="8%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2012</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">    322,618</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 2013</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,805</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2014</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,271</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 2015</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,084</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2016</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> After 2012, all debt maturities indicated above relate to debt obligations of NPL. No debt instruments have credit triggers or other clauses that result in default if Company bond ratings are lowered by rating agencies. Certain Company debt instruments contain securities ratings covenants that, if set in motion, would increase financing costs. Certain debt instruments also have leverage ratio caps and minimum net worth requirements. At December 31, 2011, the Company is in compliance with all of its covenants. Under the most restrictive of the covenants, the Company could issue over $1.6 billion in additional debt and meet the leverage ratio requirement. The Company has at least $600 million of cushion in equity relating to the minimum net worth requirement. </div> </div>

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<div> <div> <div> <div> Note 10 – Pension and Other Postretirement Benefits Southwest has an Employees' Investment Plan that provides for purchases of various mutual fund investments and Company common stock by eligible Southwest employees through deduction of a percentage of base compensation, subject to IRS limitations. Southwest matches up to one-half of amounts deferred. The maximum matching contribution is 3.5% of an employee's annual compensation. NPL has a separate plan, the cost and liability of which are not significant. The cost of the Southwest plan is listed below (in thousands):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="68%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Employee Investment Plan cost</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">    4,626</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">    4,583</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">    4,511</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> Southwest has a deferred compensation plan for all officers and a separate deferred compensation plan for members of the Board of Directors. The plans provide the opportunity to defer up to 100% of annual cash compensation. Southwest matches one-half of amounts deferred by officers, up to a maximum matching contribution of 3.5% of an officer's annual base salary. Upon retirement, payments of compensation deferred, plus interest, are made in equal monthly installments over 10, 15, or 20 years, as elected by the participant. Directors have an additional option to receive such payments over a five-year period. Deferred compensation earns interest at a rate determined each January. The interest rate equals 150% of Moody's Seasoned Corporate Bond Rate Index. Southwest has a noncontributory qualified retirement plan with defined benefits covering substantially all employees and a separate unfunded supplemental retirement plan ("SERP") which is limited to officers. Southwest also provides postretirement benefits other than pensions ("PBOP") to its qualified retirees for health care, dental, and life insurance benefits. The Company recognizes the overfunded or underfunded positions of defined benefit postretirement plans, including pension plans, in its balance sheets. Any actuarial gains and losses, prior service costs and transition assets or obligations are recognized in accumulated other comprehensive income under stockholders' equity, net of tax, until they are amortized as a component of net periodic benefit cost. In accordance with regulatory deferral accounting treatment under U.S. GAAP for rate-regulated entities, the Company has established a regulatory asset for the portion of the total amounts otherwise chargeable to accumulated other comprehensive income that are expected to be recovered through rates in future periods. The changes in actuarial gains and losses, prior service costs and transition assets or obligations pertaining to the regulatory asset will be recognized as an adjustment to the regulatory asset account as these amounts are recognized as components of net periodic pension costs each year. Investment objectives and strategies for the qualified retirement plan are developed and approved by the Pension Plan Investment Committee of the Board of Directors of the Company. They are designed to enhance capital, maintain minimum liquidity required for retirement plan operations and effectively manage pension assets. A target portfolio of investments in the qualified retirement plan is developed by the Pension Plan Investment Committee and is reevaluated periodically. Asset return assumptions are determined by evaluating performance expectations of the target portfolio. Projected benefit obligations are estimated using actuarial assumptions and Company benefit policy. A target mix of assets is then determined based on acceptable risk versus estimated returns in order to fund the benefit obligation. The current percentage ranges of the target portfolio are:   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="40%" align="center"> <tr><td width="72%"> </td> <td valign="bottom" width="18%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Type of Investment</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Percentage Range</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Equity securities</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">59 to 71</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Debt securities</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31to 37</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Other</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">up to 5  </td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> The Company's pension costs for these plans are affected by the amount and timing of cash contributions to the plans, the return on plan assets, discount rates, and by employee demographics, including age, compensation, and length of service. Changes made to the provisions of the plans may also impact current and future pension costs. Actuarial formulas are used in the determination of pension costs and are affected by actual plan experience and assumptions about future experience. Key actuarial assumptions include the expected return on plan assets, the discount rate used in determining the projected benefit obligation and pension costs, and the assumed rate of increase in employee compensation. Relatively small changes in these assumptions, particularly the discount rate, may significantly affect pension costs and plan obligations for the qualified retirement plan. U.S. GAAP states that the assumed discount rate should reflect the rate at which the pension benefits could be effectively settled. In making this estimate, in addition to rates implicit in current prices of annuity contracts that could be used to settle the liabilities, employers may look to rates of return on high-quality fixed-income investments available on December 31 of each year and expected to be available during the period to maturity of the pension benefits. In determining the discount rate, the Company matches the plan's projected cash flows to a spot-rate yield curve based on highly rated corporate bonds. Changes to the discount rate from year-to-year, if any, are generally made in increments of 25 basis points. Due to the continuing low interest rate environment for high-quality fixed income investments, the Company lowered the discount rate in 2011 from 2010. The methodology utilized to determine the discount rate was consistent with prior years. The weighted-average rate of compensation increase was also lowered (consistent with management's expectations overall) in 2011 from 2010 and the asset return assumption was unchanged between periods. The rates are presented in the table below:   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="66%"> </td> <td valign="bottom" width="15%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="15%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Discount rate</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> Weighted-average rate of compensation increase</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Asset return assumption</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td></tr></table> Low asset returns were experienced during 2011, relative to the assumed rate of return. This, combined with significant favorable returns in 2010 and 2009, partially offset substantial losses experienced in 2008. The combined asset return experience, however, coupled with the reduction in the discount rate will increase the expense level for 2012. Pension expense for 2012 is estimated to increase by $7.5 million. Future years expense level movements (up or down) will continue to be greatly influenced by long-term interest rates, asset returns, and funding levels. The following table sets forth the retirement plan, SERP, and PBOP funded status and amounts recognized on the Consolidated Balance Sheets and Statements of Income.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="44%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">SERP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">SERP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars)</td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Change in benefit obligations</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Benefit obligation for service rendered to date at beginning of year (PBO/PBO/APBO)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">662,134</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">31,860</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">46,765</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">606,276</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">35,339</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42,322</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Service cost</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,725</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">217</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">858</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,932</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">372</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">856</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Interest cost</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">37,276</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,766</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,631</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35,614</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,045</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,491</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Actuarial loss (gain)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">89,922</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,427</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,835</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">27,680</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(3,480</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,632</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Benefits paid</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(26,486</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,443</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(907</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(24,368</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,416</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,536</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Benefit obligation at end of year (PBO/PBO/APBO)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">780,571</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">33,827</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">52,182</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">662,134</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,860</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">46,765</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Change in plan assets</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Market value of plan assets at beginning of year</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">475,931</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">-</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29,640</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">392,975</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">-</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,511</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Actual return on plan assets</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,384</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">-</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(200</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">53,224</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">-</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,181</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Employer contributions</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">70,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,443</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">904</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">54,100</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,416</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,348</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Benefits paid</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(26,486</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,443</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(400</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(24,368</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,416</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(400</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Market value of plan assets at end of year</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">521,829</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">-</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29,944</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">475,931</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">-</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29,640</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Funded status at year end</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(258,742</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(33,827</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(22,238</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(186,203</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(31,860</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(17,125</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Weighted-average assumptions (benefit obligation)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Discount rate</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.00%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.00%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.00%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75%</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Weighted-average rate of compensation increase</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.00%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.00%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.00%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25%</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25%</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table>   Estimated funding for the plans above during calendar year 2012 is approximately $47 million of which $46 million pertains to the retirement plan. Management monitors plan assets and liabilities and could, at its discretion, increase plan funding levels above the minimum in order to achieve a desired funded status and avoid or minimize potential benefit restrictions. The accumulated benefit obligation for the retirement plan and the SERP is presented below (in thousands):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="66%"> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Retirement plan</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">699,269</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">590,811</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> SERP</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">32,695</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30,725</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> Benefits expected to be paid for the pension, retiree welfare, and the SERP over the next 10 years are as follows (in millions):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="63%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2012</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2013</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2014</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2015</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2016</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2017-2021</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Pension</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">30.5</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">32.1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">33.8</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">35.6</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">37.6</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">220.4</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Retiree welfare</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.5</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.6</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.8</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.9</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.0</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15.9</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> SERP</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.5</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.5</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11.8</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> No assurance can be made that actual funding and benefits paid will match these estimates. For PBOP measurement purposes, the per capita cost of covered health care benefits medical rate trend assumption is 7.5% declining to 5%. The Company makes fixed contributions for health care benefits of employees who retire after 1988, but pays all covered health care costs for employees who retired prior to 1989. The medical trend rate assumption noted above applies to the benefit obligations of pre-1989 retirees only. Components of net periodic benefit cost   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="43%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center"> SERP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center"> PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom" colspan="8"> (Thousands of dollars)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Service cost</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">17,725</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">16,932</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">15,390</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">217</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">372</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">195</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">858</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">856</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">729</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Interest cost</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">37,276</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35,614</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">34,527</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,766</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,045</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,065</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,631</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,491</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,370</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Expected return on plan assets</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(40,114</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(36,538</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(35,221</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,379</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,093</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,603</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Amortization of prior service costs (credits)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amortization of transition obligation</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">867</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">867</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">867</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Amortization of net actuarial loss</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,348</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">10,478</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,253</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">631</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,155</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">909</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">590</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">489</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">434</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net periodic benefit cost</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">29,235</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">26,486</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">18,947</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,614</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,572</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,169</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,567</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,610</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,797</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Weighted-average assumptions (net benefit cost)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Discount rate</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6.75</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> Expected return on plan assets</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Weighted-average rate of compensation increase</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.75</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.75</td> <td valign="bottom" nowrap="nowrap">% </td></tr></table>   Other Changes in Plan Assets and Benefit Obligations Recognized in Net Periodic Benefit Cost and Other Comprehensive Income   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="26%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="14" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="14" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="14" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">SERP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">SERP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">SERP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> (Thousands of dollars)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Net actuarial loss (gain) (a)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">135,492</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">127,651</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,427</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">5,414</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">9,058</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">10,994</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(3,480</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,544</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">26,448</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">21,054</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,785</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,609</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amortization of prior service credit (b)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Amortization of transition obligation (b)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(867</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(867</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(867</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(867</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(867</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(867</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amortization of net actuarial loss (b)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(15,569</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(14,348</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(631</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(590</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(12,122</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(10,478</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,155</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(489</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(5,596</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4,253</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(909</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(434</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Regulatory adjustment</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(105,931</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(101,974</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(3,957</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(652</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(464</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(188</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(15,431</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(15,123</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(308</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Recognized in other comprehensive (income) loss</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">13,125</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">11,329</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,796</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(4,583</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">52</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(4,635</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,556</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,680</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,876</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Net period benefit costs recognized in net income</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">34,416</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29,235</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,614</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,567</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">32,668</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">26,486</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,572</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,610</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,913</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">18,947</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,169</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,797</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total of amount recognized in net periodic benefit cost and other comprehensive (income) loss</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">47,541</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">40,564</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,410</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,567</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">28,085</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">26,538</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(1,063</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,610</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">29,469</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20,627</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6,045</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,797</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> The table above discloses the net gain or loss, prior service cost, and transition amount recognized in other comprehensive income, separated into (a) amounts initially recognized in other comprehensive income, and (b) amounts subsequently recognized as adjustments to other comprehensive income as those amounts are amortized as components of net periodic benefit cost. See also Note 5 – Other Comprehensive Income and Accumulated Other Comprehensive Income ("AOCI"). U.S. GAAP states that a fair value measurement should be based on the assumptions that market participants would use in pricing the asset or liability and establishes a fair value hierarchy that ranks the inputs used to measure fair value by their reliability. The three levels of the fair value hierarchy are as follows: Level 1 — quoted prices (unadjusted) in active markets for identical assets or liabilities that a company has the ability to access at the measurement date. Level 2 — inputs other than quoted prices included within Level 1 that are observable for similar assets or liabilities, either directly or indirectly. Level 3 — unobservable inputs for the asset or liability. Unobservable inputs are used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date.   The following table sets forth, by level within the three-level fair value hierarchy, the fair values of the assets of the qualified pension plan and the PBOP as of December 31, 2011 and December 31, 2010. The SERP has no assets.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="54%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Assets at fair value (thousands of dollars):</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr><td valign="top"> Level 1 - Quoted prices in active markets for identical financial assets</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Cash equivalents</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">21</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">48</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">50</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Common stock</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Capital equipment</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,332</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">133</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,465</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,083</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">362</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,445</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Chemicals/materials</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,425</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">227</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,652</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,273</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">140</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,413</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Consumer goods</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">40,806</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,249</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">42,055</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35,491</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,158</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">36,649</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Energy and mining</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">39,080</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,196</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">40,276</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">34,530</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,127</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35,657</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Finance/insurance</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">23,808</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">729</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,537</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">27,097</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">884</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">27,981</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Healthcare</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">26,070</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">798</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">26,868</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,275</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">629</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,904</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Information technology</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29,052</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">889</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29,941</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">33,445</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,091</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">34,536</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Services</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,417</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">533</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,950</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20,570</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">671</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">21,241</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Telecommunications/utilities</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,257</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">498</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,755</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,172</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">397</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,569</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">22,473</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">688</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">23,161</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,917</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">519</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,436</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Real estate investment trusts</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,779</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">177</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,956</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,504</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">147</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,651</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Mutual funds</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">57,512</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,154</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">71,666</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">49,994</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,234</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">64,228</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Government fixed income</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,727</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">175</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,902</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,020</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">360</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,380</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Futures contracts</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(51</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(53</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total Level 1 Assets (1)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">295,762</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">21,447</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">317,209</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">279,368</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">21,719</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">301,087</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr><td valign="top"> Level 2 - Significant other observable inputs</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Government fixed income and mortgage backed</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">42,361</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,297</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">43,658</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">39,201</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,279</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">40,480</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Corporate fixed income</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Asset-backed and mortgage-backed</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,969</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">519</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,488</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,014</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">457</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,471</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Banking</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,192</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">496</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">16,688</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,178</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">561</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,739</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Utilities</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,064</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">155</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,219</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,430</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">79</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,509</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,769</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">789</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">26,558</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20,575</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">671</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">21,246</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Pooled funds and mutual funds</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,447</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,244</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,691</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,230</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,974</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">10,204</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> State and local obligations</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">936</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">965</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">626</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">646</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total Level 2 assets (2)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">124,738</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">5,529</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">130,267</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">102,254</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">5,041</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">107,295</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Level 3 - Significant unobservable inputs</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Commingled equity funds</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">97,295</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,978</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">100,273</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">94,389</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,080</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">97,469</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Total Level 3 assets (3)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">97,295</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,978</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">100,273</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">94,389</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,080</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">97,469</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total Plan assets at fair value</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">517,795</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">29,954</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">547,749</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">476,011</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">29,840</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">505,851</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Guaranteed investment contracts/guaranteed annuity contracts (4)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,952</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,952</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,342</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,342</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total Plan assets (5)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">522,747</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">29,954</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">552,701</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">481,353</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">29,840</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">511,193</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table>   <div class="MetaData"> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(1)</td> <td valign="top" align="left"> Equity securities, Real Estate Investment Trusts, and U.S. Government securities listed or regularly traded on a national securities exchange are valued at quoted market prices as of the last business day of the calendar year. </td></tr></table> The mutual funds category above is an intermediate-term bond fund whose manager employs multiple concurrent strategies and takes only moderate risk in each, thereby reducing the risk of poor performance arising from any single source and a balanced fund that invests in a diversified portfolio of common stocks, preferred stocks and fixed-income securities. Strategies utilized by the bond fund include duration management, yield curve or maturity structuring, sector rotation, and all bottom-up techniques including in-house credit and quantitative research. Strategies employed by the balanced fund include pursuit of regular income, conservation of principal, and an opportunity for long-term growth of principal and income. </div> <div class="MetaData"> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(2)</td> <td valign="top" align="left"> The fair value of investments in debt securities with remaining maturities of one year or more is determined by dealers who make markets in such securities or by an independent pricing service, which considers yield or price of bonds of comparable quality, coupon, maturity, and type. </td></tr></table> The pooled funds and mutual funds are two collective short-term funds that invest in Treasury bills and money market funds. These funds are used as a temporary cash repository for the pension plan's various investment managers. </div> <div class="MetaData"> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(3)</td> <td valign="top" align="left"> Assets not considered Level 1 or Level 2 are valued using assumptions based on the best information available under the circumstances, such as investment manager pricing. </td></tr></table> The commingled equity funds include private equity funds that invest in international securities. These funds are shown in the above table at net asset value. Investment strategies employed by the funds include:   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td width="5%"> </td> <td valign="top" width="1%" align="left"></td> <td valign="top" width="1%"> </td> <td valign="top" align="left"> Investing in various industries with growth and reasonable valuations, avoiding highly cyclical industries </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td width="5%"> </td> <td valign="top" width="1%" align="left"></td> <td valign="top" width="1%"> </td> <td valign="top" align="left"> Diversification by country, limiting exposure in any one country </td></tr></table> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td width="5%"> </td> <td valign="top" width="1%" align="left"></td> <td valign="top" width="1%"> </td> <td valign="top" align="left"> Emerging markets </td></tr></table></div> <div class="MetaData"> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(4)</td> <td valign="top" align="left"> The guaranteed investment contracts/guaranteed annuity contracts are annuity insurance contracts used to pay the pensions of employees who retired prior to 1989. The balance of the account disclosed in the above table is the contract value, which is the result of deposits, withdrawals, and interest credits. </td></tr></table></div> <div class="MetaData"> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(5)</td> <td valign="top" align="left"> The assets in the above table exceed the market value of plan assets shown in the funded status table by $928,000 (qualified retirement plan - $918,000, PBOP - $10,000) and $5.6 million (qualified retirement plan - $5.4 million, PBOP - $200,000) for 2011 and 2010, respectively, which includes a payable for securities purchased, partially offset by receivables for interest, dividends, and securities sold. </td></tr></table></div>   Fair Value Measurements Using Significant Unobservable Inputs (Level 3)   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="81%"> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Commingled Equity Funds</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars):</td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Balance, December 31, 2009</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">77,879</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Actual return on plan assets:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Relating to assets still held at the reporting date</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">13,090</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Relating to assets sold during the period</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Purchases</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,500</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Sales</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Settlements</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Transfers in and/or out of Level 3</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Balance, December 31, 2010</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">97,469</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Actual return on plan assets:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Relating to assets still held at the reporting date</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(8,442</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Relating to assets sold during the period</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">246</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Purchases</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Sales</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,000</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Settlements</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Transfers in and/or out of Level 3</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Balance, December 31, 2011</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">100,273</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table></div></div></div> </div>

87877000

96598000

831000

18401000

11098000

7402000

49834000

123960000

274598000

100000000

-57600000

-92400000

109000000

-55000000

87118000

-364000

87482000

103453000

-424000

103877000

111763000

-524000

112287000

<div> <div> Net Utility Plant.    Net utility plant includes gas plant at original cost, less the accumulated provision for depreciation and amortization, plus the unamortized balance of acquisition adjustments. Original cost includes contracted services, material, payroll and related costs such as taxes and benefits, general and administrative expenses, and an allowance for funds used during construction, less contributions in aid of construction. </div> </div>

2178000

1457000

1872000

<div> <div> <div> Note 2 – Utility Plant Net utility plant as of December 31, 2011 and 2010 was as follows (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Gas plant:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Storage</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20,496</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20,396</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Transmission</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">295,103</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">274,646</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Distribution</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,048,078</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,847,731</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> General</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">291,639</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">279,402</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">155,734</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">146,930</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,811,050</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,569,105</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Less: accumulated depreciation</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,638,091</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,535,429</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Acquisition adjustments, net</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,091</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,271</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Construction work in progress</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">44,894</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">37,489</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net utility plant</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,218,944</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,072,436</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> Depreciation and amortization expense on gas plant was as follows (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="73%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Depreciation and amortization expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">172,712</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">167,050</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">162,240</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> Operating Leases and Rentals.    Southwest leases a portion of its corporate headquarters office complex in Las Vegas and its administrative offices in Phoenix. The table below presents the rental payments and the current term expiration dates, although both leases have optional renewal terms available.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="53%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2012</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2013</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2014</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2015</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2016</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2017</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (In thousands)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Corporate headquarters (expires in 2017)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,100</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,140</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,190</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,270</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,343</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,194</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Phoenix administrative offices (expires in 2014)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,396</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,446</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">243</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> In addition to the above, the Company leases certain office and construction equipment. The majority of these leases are short-term. These leases are accounted for as operating leases, and for the gas segment are treated as such for regulatory purposes. NPL has various short-term operating leases of equipment and temporary office sites. The table below presents Southwest rental payments and NPL lease payments that are included in operating expenses for all operating leases (in thousands):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="74%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Southwest Gas</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7,812</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7,585</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">8,630</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> NPL</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,017</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,780</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,301</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Consolidated rental payments/lease expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">26,829</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">19,365</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">19,931</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table>   The following is a schedule of future minimum lease payments for significant non-cancelable operating leases (with initial or remaining terms in excess of one year) as of December 31, 2011 (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="92%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Year Ending December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2012</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6,310</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 2013</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,674</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2014</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,358</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 2015</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,881</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2016</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,449</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Thereafter</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,194</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total minimum lease payments</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">21,866</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table></div></div> </div>

1535429000

1638091000

-1271000

-1091000

37489000

44894000

3072436000

3218944000

4569105000

279402000

20396000

3847731000

274646000

146930000

4811050000

291639000

20496000

4048078000

295103000

155734000

<div> Note 15 - Quarterly Financial Data (Unaudited)   <div class="MetaData"> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="95%"> <tr><td width="56%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="14" align="center">Quarter Ended</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">March 31</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">June 30</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">September 30</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars, except per share amounts)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="14"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2011</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Operating revenues</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">628,440</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">388,505</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">352,592</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">517,651</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Operating income</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">126,335</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20,568</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,253</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">101,924</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Net income (loss)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">68,549</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,055</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(15,641</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">55,324</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Basic earnings (loss) per common share*</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.50</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.09</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.34</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.20</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Diluted earnings (loss) per common share*</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.48</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.09</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.34</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.19</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td height="16"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2010</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Operating revenues</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">668,751</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">385,825</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">307,683</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">468,112</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Operating income</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">121,732</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,031</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">184</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">86,170</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Net income (loss)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">64,648</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(933</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4,823</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">44,985</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Basic earnings (loss) per common share*</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.43</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.02</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.11</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.99</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Diluted earnings (loss) per common share*</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.42</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.02</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.11</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.98</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td height="16"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2009</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Operating revenues</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">689,862</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">387,648</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">317,509</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">498,805</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Operating income</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">102,729</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,685</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">522</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">90,455</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Net income (loss)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">49,981</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(594</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(8,297</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">46,392</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Basic earnings (loss) per common share*</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.13</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.01</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.18</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.03</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Diluted earnings (loss) per common share*</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.12</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.01</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.18</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.02</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table>   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">*</td> <td valign="top" align="left"> The sum of quarterly earnings (loss) per average common share may not equal the annual earnings (loss) per share due to the ongoing change in the weighted-average number of common shares outstanding. </td></tr></table></div> The demand for natural gas is seasonal, and it is the opinion of management that comparisons of earnings for the interim periods do not reliably reflect overall trends and changes in the operations of the Company. Also, the timing of general rate relief can have a significant impact on earnings for interim periods. See Management's Discussion and Analysis for additional discussion of operating results.   </div>

689862000

1893824000

278981000

1614843000

387648000

317509000

498805000

668751000

1830371000

318464000

1511907000

385825000

307683000

468112000

628440000

1887188000

483822000

1403366000

388505000

352592000

517651000

1614843000

1511907000

1403366000

299034000

224913000

14000000

356000

28402000

19881000

11482000

415309000

330844000

18400000

2323000

32988000

19011000

11743000

<div> <div> Depreciation and Amortization.    Utility plant depreciation is computed on the straight-line remaining life method at composite rates considered sufficient to amortize costs over estimated service lives, including components which compensate for removal costs (net of salvage value), and retirements, as approved by the appropriate regulatory agency. When plant is retired from service, the original cost of plant, including cost of removal, less salvage, is charged to the accumulated provision for depreciation. Other regulatory assets, including acquisition adjustments, are amortized when appropriate, over time periods authorized by regulators. Nonutility and construction services-related property and equipment are depreciated on a straight-line method based on the estimated useful lives of the related assets. Costs and gains related to refunding utility debt and debt issuance expenses are deferred and amortized over the weighted-average lives of the new issues and become a component of interest expense. </div> </div>

211000000

1246000

123344000

546000

2811000

13006000

656000

233000000

806000

72426000

14501000

12470000

15654000

3327000

330473000

200000000

100000000

37800000

12800000

37781000

12785000

343131000

406125000

1841250000

226407000

1614843000

1769120000

257213000

1511907000

1795067000

391701000

1403366000

52574000

61251000

92121000

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="91%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Gas utility customer accounts receivable balance (in thousands)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">124,794</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div>

<div> <div class="MetaData"> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="39%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td valign="bottom"> AOCI - Rollforward (Thousands of dollars)  </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">Defined Benefit Plans (Note 10)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">FSIRS (Note 13)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" rowspan="2" colspan="2" align="center"> AOCI</td> <td valign="bottom" rowspan="2"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Before- Tax</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Tax (Expense) Benefit</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">After- Tax</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Before- Tax</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Tax (Expense) Benefit</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">After-Tax</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Beginning Balance AOCI December 31, 2010</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(31,304</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">11,896</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(19,408</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(18,349</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6,973</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(11,376</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(30,784</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Current period other comprehensive income (loss)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(13,125</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,987</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(8,138</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(16,789</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,380</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(10,409</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(18,547</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Ending Balance AOCI December 31, 2011</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(44,429</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">16,883</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(27,546</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(35,138</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">13,353</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(21,785</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(49,331</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table></div> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="40%" align="center"> <tr><td width="72%"> </td> <td valign="bottom" width="18%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Type of Investment</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Percentage Range</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Equity securities</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">59 to 71</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Debt securities</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31to 37</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Other</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">up to 5  </td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="66%"> </td> <td valign="bottom" width="15%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="15%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Discount rate</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5.75</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> Weighted-average rate of compensation increase</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.25</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Asset return assumption</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8.00</td> <td valign="bottom" nowrap="nowrap">% </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="79%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2009 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr><td valign="bottom"> (In thousands)</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> AFUDC:</td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Debt portion</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">718 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">512 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">957 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Equity portion</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">1,154 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">945 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">1,221 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr> <tr><td valign="top"> AFUDC capitalized as part of utility plant</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">1,872 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">1,457 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">2,178 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="64%"> </td> <td valign="bottom" width="12%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="12%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Year Ended December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Year Ended December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amount of loss on unrealized FSIRS recognized in other comprehensive income on derivative (effective portion)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(17,958</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(6,755</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Amount of loss on realized FSIRS recognized in other comprehensive income on derivative</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,691</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(17,958</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(18,446</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="90%"> <tr><td width="76%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Year Ended December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Current:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Federal</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(265</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,204</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(1,020</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> State</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,122</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,442</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,101</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,857</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,646</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,081</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Federal</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">58,584</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">44,778</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">41,410</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> State</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,862</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,501</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,426</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">61,446</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">46,279</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">42,836</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total income tax expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">63,303</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">54,925</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">44,917</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="68%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Employee Investment Plan cost</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">    4,626</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">    4,583</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">    4,511</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="58%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="6" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="6" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Carrying Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Market Value</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Carrying Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Market Value</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Debentures:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Notes, 8.375%, due 2011</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">200,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">201,560</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Notes, 7.625%, due 2012</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">200,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">204,312</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">200,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">  214,666</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Notes, 4.45%, due 2020</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">125,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">128,673</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">125,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">125,325</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Notes, 6.1%, due 2041</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">125,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">  143,074</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 8% Series, due 2026</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">75,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">96,340</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">75,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">99,968</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Medium-term notes, 7.59% series, due 2017</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30,199</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30,295</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Medium-term notes, 7.78% series, due 2022</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,932</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">32,063</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Medium-term notes, 7.92% series, due 2027</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,648</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">25,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">33,211</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Medium-term notes, 6.76% series, due 2027</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,500</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,510</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,500</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,956</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Unamortized discount</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,087</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,534</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">605,413</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">679,966</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Revolving credit facility and commercial paper, due 2012</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">109,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">109,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Industrial development revenue bonds:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Variable-rate bonds:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Tax-exempt Series A, due 2028</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2003 Series A, due 2038</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 2008 Series A, due 2038</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2009 Series A, due 2039</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">50,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Fixed-rate bonds:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 6.10% 1999 Series A, due 2038</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,410</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,410</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,410</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,968</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 5.95% 1999 Series C, due 2038</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,320</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,449</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,320</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">13,594</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 5.55% 1999 Series D, due 2038</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,270</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,253</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,270</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,468</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 5.45% 2003 Series C, due 2038 (rate resets in 2013)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,332</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,547</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 5.25% 2003 Series D, due 2038</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,583</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,474</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 5.80% 2003 Series E, due 2038 (rate resets in 2013)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,634</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,436</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 5.25% 2004 Series A, due 2034</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">65,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">64,291</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">65,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">58,574</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 5.00% 2004 Series B, due 2033</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,200</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">30,283</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,200</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">27,295</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 4.85% 2005 Series A, due 2035</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">  100,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">94,836</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">  100,000</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">84,485</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 4.75% 2006 Series A, due 2036</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,855</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">23,179</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,855</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20,518</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Unamortized discount</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(3,360</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(3,502</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">517,695</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">517,553</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> NPL debt obligations</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">21,368</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">21,380</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,242</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,473</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">  1,253,476</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,199,761</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Less: current maturities</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(322,618</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(75,080</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Long-term debt, less current maturities</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">930,858</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">  1,124,681</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="95%"> <tr><td width="82%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred tax assets:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Deferred income taxes for future amortization of ITC</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,743</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,280</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Employee benefits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,605</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">31,384</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Alternative minimum tax credit</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">17,411</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,495</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net operating losses and credits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">59,096</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Interest rate swap</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">13,352</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,973</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Other</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,099</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,026</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Valuation allowance</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(142</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">133,164</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">66,158</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Deferred tax liabilities:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Property-related items, including accelerated depreciation</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">611,022</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">500,216</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Regulatory balancing accounts</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">743</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">836</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Property-related items previously flowed through</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,797</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,910</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Unamortized ITC</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,992</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,860</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Debt-related costs</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,379</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,824</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,914</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">8,094</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">636,847</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">524,740</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Net deferred tax liabilities</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">503,683</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">458,582</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Current</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(53,435</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(8,046</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Noncurrent</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">557,118</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">466,628</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net deferred tax liabilities</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">503,683</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">458,582</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="29%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="10" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Before- Tax Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Tax (Expense) or Benefit (1)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net-of- Tax Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Before- Tax Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center"> Tax (Expense) or Benefit (1)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center"> Net-of- Tax Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center"> Before- Tax Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Tax (Expense) or Benefit (1)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net-of- Tax Amount</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars)</td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Defined benefit pension plans:</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Net actuarial gain/(loss)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(135,492</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">51,487</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(84,005</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(9,058</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,442</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(5,616</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(26,448</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">10,050</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(16,398</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amortization of prior service credit</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Amortization of transition obligation</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">867</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(330</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">537</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">867</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(329</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">538</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">867</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(329</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">538</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amortization of net loss</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,569</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(5,916</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">9,653</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,122</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4,606</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,516</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,596</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,126</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,470</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Regulatory adjustment</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">105,931</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(40,254</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">65,677</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">652</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(248</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">404</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15,431</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(5,864</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">9,567</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Pension plans other comprehensive income (loss)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(13,125</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,987</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(8,138</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,583</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,741</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,842</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4,556</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,732</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,824</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> FSIRS (designated hedging activities):</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Unrealized/realized loss</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(17,958</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,824</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,134</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(18,446</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">7,010</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,436</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Amounts reclassified into net income</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,169</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(444</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">725</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">97</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(37</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">60</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> FSIRS other comprehensive income (loss)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(16,789</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,380</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(10,409</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(18,349</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,973</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,376</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Total other comprehensive income (loss)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(29,914</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">11,367</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(18,547</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(13,766</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">5,232</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(8,534</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(4,556</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,732</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(2,824</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div>

<div> <div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="17%"> </td> <td valign="bottom" width="2%"> </td> <td width="58%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom" nowrap="nowrap">Instrument                </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Location of Gain or (Loss) Recognized in Income on Derivative</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Net cost of gas sold</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(18,201</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(27,690</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(4,391</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Net cost of gas sold</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">18,201 </td> <td valign="bottom" nowrap="nowrap">* </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">27,690 </td> <td valign="bottom" nowrap="nowrap">* </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,391 </td> <td valign="bottom" nowrap="nowrap">* </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> * Represents the impact of regulatory deferral accounting treatment under U.S. GAAP for rate-regulated entities. </div> </div>

<div> <div class="MetaData"> Fair values of derivatives not designated as hedging instruments:   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="25%"> </td> <td valign="bottom" width="4%"> </td> <td width="44%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31, 2011 Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Asset Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Liability Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Other current liabilities</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(11,122</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(11,122</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Other deferred credits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(621</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(621</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(11,743</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(11,743</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="2"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31, 2010 Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Asset Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Liability Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Deferred charges and other assets</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">656</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">656</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Other current liabilities</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">65</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,547</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(11,482</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">721</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(11,547</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(10,826</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table>   Fair values of derivatives designated as hedging instruments:   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="25%"> </td> <td valign="bottom" width="4%"> </td> <td width="45%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31, 2011 Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Asset Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Liability Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> FSIRS</td> <td valign="bottom">  </td> <td valign="bottom">Other current liabilities</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(24,713</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(24,713</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="2"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31, 2010 Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Asset Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Liability Derivatives</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Net Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> FSIRS</td> <td valign="bottom">  </td> <td valign="bottom">Other deferred credits</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(6,755</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(6,755</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table></div> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="79%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2009 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr><td valign="bottom"> (In thousands)</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Average basic shares</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,858 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,405 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">44,752 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr><td valign="top"> Effect of dilutive securities:</td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Stock options</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">52 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">56 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">14 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr><td valign="top"> Performance shares</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">271 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">260 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">216 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Restrictled stock units</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">110 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">102 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">80 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr> <tr><td valign="top"> Average diluted shares</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">46,291 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,823 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,062 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="95%"> <tr><td width="85%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Year Ended December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Federal statutory income tax rate</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35.0</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35.0</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">35.0</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr><td valign="top"> Net state taxes</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.7</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.8</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.5</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Property-related items</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.2</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Effect of income tax settlements</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.9</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.3</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.2</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Tax credits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.6</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.5</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.7</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Company owned life insurance</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.1</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2.3</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2.5</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> All other differences</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.1</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.2</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.3</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Consolidated effective income tax rate</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">36.2</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">34.7</td> <td valign="bottom" nowrap="nowrap">% </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">34.0</td> <td valign="bottom" nowrap="nowrap">% </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="81%"> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Commingled Equity Funds</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars):</td> <td valign="bottom">  </td> <td valign="bottom" colspan="2"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Balance, December 31, 2009</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">77,879</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Actual return on plan assets:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Relating to assets still held at the reporting date</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">13,090</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Relating to assets sold during the period</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Purchases</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">6,500</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Sales</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Settlements</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Transfers in and/or out of Level 3</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Balance, December 31, 2010</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">97,469</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Actual return on plan assets:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Relating to assets still held at the reporting date</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(8,442</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Relating to assets sold during the period</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">246</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Purchases</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">12,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Sales</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,000</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Settlements</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Transfers in and/or out of Level 3</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Balance, December 31, 2011</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">100,273</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="63%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2012</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2013</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2014</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2015</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2016</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2017-2021</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Pension</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">30.5</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">32.1</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">33.8</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">35.6</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">37.6</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">220.4</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Retiree welfare</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.5</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.6</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.8</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.9</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3.0</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">15.9</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> SERP</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.5</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.5</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2.4</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11.8</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="92%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Year Ending December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2012</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6,310</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 2013</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">5,674</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2014</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,358</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> 2015</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,881</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2016</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,449</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Thereafter</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,194</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total minimum lease payments</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">21,866</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="74%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Southwest Gas</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7,812</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7,585</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">8,630</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> NPL</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,017</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,780</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,301</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Consolidated rental payments/lease expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">26,829</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">19,365</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">19,931</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="26%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="14" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="14" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="14" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">SERP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">SERP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Qualified Retirement Plan</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">SERP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">PBOP</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> (Thousands of dollars)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Net actuarial loss (gain) (a)</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">135,492</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">127,651</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,427</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">5,414</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">9,058</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">10,994</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(3,480</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,544</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">26,448</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">21,054</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,785</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,609</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amortization of prior service credit (b)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Amortization of transition obligation (b)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(867</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(867</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(867</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(867</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(867</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(867</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Amortization of net actuarial loss (b)</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(15,569</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(14,348</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(631</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(590</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(12,122</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(10,478</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,155</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(489</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(5,596</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4,253</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(909</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(434</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Regulatory adjustment</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(105,931</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(101,974</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(3,957</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(652</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(464</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(188</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(15,431</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(15,123</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(308</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Recognized in other comprehensive (income) loss</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">13,125</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">11,329</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,796</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(4,583</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">52</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(4,635</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,556</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,680</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,876</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Net period benefit costs recognized in net income</td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">34,416</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29,235</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,614</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,567</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">32,668</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">26,486</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,572</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,610</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,913</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">18,947</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,169</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,797</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total of amount recognized in net periodic benefit cost and other comprehensive (income) loss</td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">47,541</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">40,564</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,410</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,567</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">28,085</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">26,538</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(1,063</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,610</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">29,469</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20,627</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6,045</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">2,797</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2009 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Change in COLI policies</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">700 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">9,770 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">8,546 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr><td valign="top"> Interest income</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">485 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">194 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">271 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Pipe replacement costs</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(4,761 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(5,024 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(2,642 </td> <td valign="bottom" nowrap="nowrap">)  </td></tr> <tr><td valign="top"> Miscellaneous income and (expense)</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(1,836 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(1,090 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">470 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total other income (deductions)</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">(5,412 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">3,850 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">6,645 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table> </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Gas plant:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Storage</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20,496</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20,396</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Transmission</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">295,103</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">274,646</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Distribution</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,048,078</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">3,847,731</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> General</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">291,639</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">279,402</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Other</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">155,734</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">146,930</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,811,050</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,569,105</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Less: accumulated depreciation</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,638,091</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,535,429</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Acquisition adjustments, net</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,091</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,271</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Construction work in progress</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">44,894</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">37,489</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net utility plant</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,218,944</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,072,436</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div>

<div> <div class="MetaData"> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="95%"> <tr><td width="56%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="14" align="center">Quarter Ended</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">March 31</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">June 30</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">September 30</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td valign="bottom"> (Thousands of dollars, except per share amounts)</td> <td valign="bottom">  </td> <td valign="bottom" colspan="14"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2011</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Operating revenues</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">628,440</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">388,505</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">352,592</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">517,651</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Operating income</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">126,335</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">20,568</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1,253</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">101,924</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Net income (loss)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">68,549</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">4,055</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(15,641</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">55,324</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Basic earnings (loss) per common share*</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.50</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.09</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.34</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.20</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Diluted earnings (loss) per common share*</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.48</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.09</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.34</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.19</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td height="16"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2010</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Operating revenues</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">668,751</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">385,825</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">307,683</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">468,112</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Operating income</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">121,732</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">24,031</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">184</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">86,170</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Net income (loss)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">64,648</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(933</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(4,823</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">44,985</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Basic earnings (loss) per common share*</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.43</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.02</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.11</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.99</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Diluted earnings (loss) per common share*</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.42</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.02</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.11</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">0.98</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td height="16"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> 2009</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Operating revenues</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">689,862</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">387,648</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">317,509</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">498,805</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Operating income</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">102,729</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,685</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">522</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">90,455</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Net income (loss)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">49,981</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(594</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(8,297</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">46,392</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Basic earnings (loss) per common share*</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.13</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.01</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.18</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.03</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Diluted earnings (loss) per common share*</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.12</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.01</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(0.18</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">1.02</td> <td valign="bottom" nowrap="nowrap">  </td></tr></table>   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">*</td> <td valign="top" align="left"> The sum of quarterly earnings (loss) per average common share may not equal the annual earnings (loss) per share due to the ongoing change in the weighted-average number of common shares outstanding. </td></tr></table></div> </div>

<div> Note 4 - Regulatory Assets and Liabilities Natural gas operations are subject to the regulation of the Arizona Corporation Commission ("ACC"), the Public Utilities Commission of Nevada ("PUCN"), the California Public Utilities Commission ("CPUC"), and the Federal Energy Regulatory Commission ("FERC"). Southwest accounting policies conform to U.S. GAAP applicable to rate-regulated entities and reflect the effects of the ratemaking process. Accounting treatment for rate-regulated entities allows for deferral as regulatory assets, costs that otherwise would be expensed, if it is probable that future recovery from customers will occur. If rate recovery is no longer probable, due to competition or the actions of regulators, Southwest is required to write-off the related regulatory asset. Regulatory liabilities are recorded if it is probable that revenues will be reduced for amounts that will be credited to customers through the ratemaking process. The following table represents existing regulatory assets and liabilities (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="80%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">December 31,</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Regulatory assets:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Accrued pension and other postretirement benefit costs (1)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">330,844</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">224,913</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Unrealized loss on non-trading derivatives (Swaps) (2)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,743</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,482</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Deferred purchased gas costs (3)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">2,323</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">356</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accrued purchased gas costs (4)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">18,400</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">14,000</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Unamortized premium on reacquired debt (5)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,011</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">19,881</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Other (6)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">32,988</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">28,402</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">415,309</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">299,034</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Regulatory liabilities:</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Deferred purchased gas costs (3)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(72,426</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(123,344</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accumulated removal costs</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(233,000</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(211,000</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Unrealized gain on non-trading derivatives (Swaps) (2)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(656</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Deferred gain on southern Nevada division operations facility (7)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(806</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,246</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Rate refunds due customers (8)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(546</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Unamortized gain on reacquired debt (9)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(12,470</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(13,006</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr><td valign="top"> Other (10)</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(14,501</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(2,811</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Net regulatory assets (liabilities)</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">82,106</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(53,575</td> <td valign="bottom" nowrap="nowrap">) </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table>   <table style="border-collapse: collapse;" class="MetaData" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(1)</td> <td class="MetaData" valign="top" align="left"> Included in Deferred charges and other assets on the Consolidated Balance Sheets. Recovery period is greater than five years. (See Note 10). </td></tr></table> <table style="border-collapse: collapse;" class="MetaData" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(2)</td> <td class="MetaData" valign="top" align="left"> The following table details the regulatory assets/(liabilities) offsetting the derivatives (Swaps) at fair value in the balance sheets (thousands of dollars). The actual amounts, when realized at settlement, become a component of purchased gas costs under the Company's purchased gas adjustment ("PGA") mechanisms. (See Note 13). </td></tr></table>   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="44%"> </td> <td valign="bottom" width="4%"> </td> <td width="39%"> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="4%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">Instrument</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Balance Sheet Location</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Deferred charges and other assets</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">621</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Prepaids and other current assets</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,122</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">11,482</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Swaps</td> <td valign="bottom">  </td> <td valign="bottom">Other deferred credits</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(656</td> <td valign="bottom" nowrap="nowrap">) </td></tr></table>   <table style="border-collapse: collapse;" class="MetaData" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(3)</td> <td class="MetaData" valign="top" align="left"> Balance recovered or refunded on an ongoing basis with interest. </td></tr></table> <table style="border-collapse: collapse;" class="MetaData" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(4)</td> <td class="MetaData" valign="top" align="left"> Included in Prepaids and other current assets on the Consolidated Balance Sheets and recovered over one year or less. </td></tr></table> <table style="border-collapse: collapse;" class="MetaData" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(5)</td> <td class="MetaData" valign="top" align="left"> Included in Deferred charges and other assets on the Consolidated Balance Sheets. Recovered over life of debt instruments. </td></tr></table> <table style="border-collapse: collapse;" class="MetaData" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(6)</td> <td class="MetaData" valign="top" align="left"> Other regulatory assets including deferred costs associated with rate cases, regulatory studies, and state mandated public purpose programs (including low income and conservation programs), as well as margin and interest-tracking accounts, amounts associated with accrued absence time, and deferred post-retirement benefits other than pensions. Recovery periods vary. </td></tr></table> <table style="border-collapse: collapse;" class="MetaData" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(7)</td> <td class="MetaData" valign="top" align="left"> Balance recovered over a four-year period beginning in the fourth quarter of 2009. </td></tr></table> <table style="border-collapse: collapse;" class="MetaData" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(8)</td> <td class="MetaData" valign="top" align="left"> Included in Other current liabilities on the Consolidated Balance Sheet. </td></tr></table> <table style="border-collapse: collapse;" class="MetaData" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(9)</td> <td class="MetaData" valign="top" align="left"> Included in Other deferred credits on the Consolidated Balance Sheet. Amortized over life of debt instruments. </td></tr></table> <table style="border-collapse: collapse;" class="MetaData" border="0" cellspacing="0" cellpadding="0" width="100%"> <tr><td valign="top" width="3%" align="left">(10)</td> <td class="MetaData" valign="top" align="left"> Other regulatory liabilities includes amounts associated with income tax and gross-up. </td></tr></table> </div>

<div>   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="95%" align="center"> <tr><td width="58%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Gas Operations</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Construction Services</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Adjustments</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Revenues from unaffiliated customers</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,403,366</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">391,701</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,795,067</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Intersegment sales</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">92,121</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">92,121</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,403,366</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">483,822</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,887,188</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Interest revenue</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">465</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">485</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Interest expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">68,777</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">825</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">69,602</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Depreciation and amortization</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">175,253</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">25,216</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">200,469</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Income tax expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">49,576</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">13,727</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">63,303</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Segment net income</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">91,420</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20,867</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">112,287</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Segment assets</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,048,613</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">227,394</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,276,007</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Capital expenditures</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">305,542</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">75,449</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">380,991</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="2"> </td> <td height="16" colspan="4"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Gas Operations</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Construction Services</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Adjustments</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Revenues from unaffiliated customers</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,511,907</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">257,213</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,769,120</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Intersegment sales</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">61,251</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">61,251</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,511,907</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">318,464</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,830,371</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Interest revenue</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">158</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">36</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">194</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Interest expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">77,025</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">564</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">77,589</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Depreciation and amortization</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">170,456</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20,007</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">190,463</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Income tax expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">47,073</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7,852</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">54,925</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Segment net income</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">91,382</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">12,495</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">103,877</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Segment assets</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,845,111</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">139,082</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,984,193</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Capital expenditures</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">188,379</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">27,060</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">215,439</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Gas Operations</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Construction Services</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Adjustments (a)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Revenues from unaffiliated customers</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,614,843</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">226,407</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,841,250</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Intersegment sales</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">52,574</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">52,574</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,614,843</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">278,981</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,893,824</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Interest revenue</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">189</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">82</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">271</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Interest expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">81,822</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,179</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">83,001</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Depreciation and amortization</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">166,850</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">23,232</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">190,082</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Income tax expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">40,451</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,466</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">44,917</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Segment net income</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">79,420</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">8,062</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">87,482</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Segment assets</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,782,913</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">124,755</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(1,376</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,906,292</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Capital expenditures</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">212,919</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,066</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">216,985</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> (a) Reflects construction services segment income taxes payable in 2009, which were netted against gas operations segment income taxes receivable during consolidation. </div>

<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="32%"> </td> <td valign="bottom" width="7%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="7%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="7%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="7%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="7%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="7%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="6" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="6" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="6" align="center">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Number of options</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Weighted- average exercise price</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Number of options</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Weighted- average exercise price</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Number of options</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Weighted- average exercise price</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Outstanding at the beginning of the year</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">369</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">28.04</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">651</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">27.49</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">731</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">27.12</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Exercised during the year</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(192</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">28.75</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(273</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">26.67</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(66</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">23.18</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Forfeited or expired during the year</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(9</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">29.51</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(14</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">28.88</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Outstanding and exercisable at year end</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">177</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">27.28</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">369</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">28.04</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">651</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">27.49</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr></table> </div>

<div> Note 14 - Segment Information Company operating segments are determined based on the nature of their activities. The natural gas operations segment is engaged in the business of purchasing, distributing, and transporting natural gas. Revenues are generated from the distribution and transportation of natural gas. The construction services segment is primarily engaged in the business of providing utility companies with trenching and installation, replacement, and maintenance services for energy distribution systems. The accounting policies of the reported segments are the same as those described within Note 1 - Summary of Significant Accounting Policies. NPL accounts for the services provided to Southwest at contractual (market) prices. Accounts receivable for these services, which are not eliminated during consolidation, are presented in the table below (in thousands).   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="66%"> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="13%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">December 31, 2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accounts receivable for NPL services</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">6,205</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">8,111</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table>   The financial information pertaining to the natural gas operations and construction services segments for each of the three years in the period ended December 31, 2011 is as follows (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="95%" align="center"> <tr><td width="58%"> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td valign="bottom" width="5%"> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Gas Operations</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Construction Services</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Adjustments</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Revenues from unaffiliated customers</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,403,366</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">391,701</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,795,067</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Intersegment sales</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">92,121</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">92,121</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,403,366</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">483,822</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,887,188</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Interest revenue</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">465</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">485</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Interest expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">68,777</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">825</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">69,602</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Depreciation and amortization</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">175,253</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">25,216</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">200,469</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Income tax expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">49,576</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">13,727</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">63,303</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Segment net income</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">91,420</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20,867</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">112,287</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Segment assets</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,048,613</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">227,394</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,276,007</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Capital expenditures</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">305,542</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">75,449</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">380,991</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td height="16"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="4"> </td> <td height="16" colspan="2"> </td> <td height="16" colspan="4"> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Gas Operations</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Construction Services</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">Adjustments</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Revenues from unaffiliated customers</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,511,907</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">257,213</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,769,120</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Intersegment sales</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">61,251</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">61,251</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,511,907</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">318,464</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,830,371</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Interest revenue</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">158</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">36</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">194</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Interest expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">77,025</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">564</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">77,589</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Depreciation and amortization</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">170,456</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">20,007</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">190,463</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Income tax expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">47,073</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">7,852</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">54,925</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Segment net income</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">91,382</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">12,495</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">103,877</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Segment assets</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,845,111</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">139,082</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,984,193</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Capital expenditures</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">188,379</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">27,060</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">215,439</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">2009</td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Gas Operations</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Construction Services</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Adjustments (a)</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">Total</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Revenues from unaffiliated customers</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,614,843</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">226,407</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,841,250</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Intersegment sales</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">52,574</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">52,574</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,614,843</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">278,981</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,893,824</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Interest revenue</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">189</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">82</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">271</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Interest expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">81,822</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,179</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">83,001</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Depreciation and amortization</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">166,850</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">23,232</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">190,082</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Income tax expense</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">40,451</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,466</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">44,917</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Segment net income</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">79,420</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">8,062</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">87,482</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Segment assets</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,782,913</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">124,755</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">(1,376</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">3,906,292</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Capital expenditures</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">212,919</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">4,066</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">216,985</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> (a) Reflects construction services segment income taxes payable in 2009, which were netted against gas operations segment income taxes receivable during consolidation. </div>

3906292000

124755000

3782913000

3984193000

139082000

3845111000

4276007000

227394000

4048613000

125000000

200000000

12400000

3942000

4429000

6125000

ten

4000

2000

30.11

30.50

125000

92000

37.87

366000

170000

361000

176000

27.54

27.42

30.66

32.65

137000

89000

405000

29.52

28.45

1695000

3186000

2697000

294000

1689000

1949000

23.18

26.67

28.75

14000

9000

28.88

29.51

731000

651000

369000

177000

27.12

27.49

28.04

27.28

3.4

25.81

32.29

22.45

24.50

29.08

20.49

58000

67000

52000

3.3

4.5

2.1

26.10

33.07

23.40

<div> <div> <div> <div> Note 8 - Short-Term Debt As discussed in Note 7, Southwest has a $300 million credit facility that expires in May 2012, of which $150 million of the $300 million facility was designated by management for working capital purposes. The Company had no short-term borrowings outstanding at December 31, 2010 and 2011. Management intends to refinance its borrowing capacity during the first quarter of 2012. </div></div></div> </div>

<div> Note 1 - Summary of Significant Accounting Policies <div> Nature of Operations.    Southwest Gas Corporation and its subsidiaries (the "Company") consist of two segments: natural gas operations ("Southwest" or the "natural gas operations" segment) and construction services. Southwest is engaged in the business of purchasing, distributing, and transporting natural gas for customers in portions of Arizona, Nevada, and California. The public utility rates, practices, facilities, and service territories of Southwest are subject to regulatory oversight. Natural gas purchases and the timing of related recoveries can materially impact liquidity. NPL Construction Co. ("NPL" or the "construction services" segment), a wholly owned subsidiary, is a full-service underground piping contractor that primarily provides utility companies with trenching and installation, replacement, and maintenance services for energy distribution systems. In November 2009, NPL entered into a venture to market natural gas engine-driven heating, ventilating, and air conditioning ("HVAC") technology and products. NPL has a <div>65 % interest in the entity (IntelliChoice Energy, "ICE") and consolidates ICE as a majority-owned subsidiary. <div> </div> <div> Basis of Presentation.     The Company follows generally accepted accounting principles in the United States ("U.S. GAAP") in accounting for all of its businesses. Accounting for the natural gas utility operations conforms with U.S. GAAP as applied to regulated companies and as prescribed by federal agencies and the commissions of the various states in which the utility operates. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. </div> <div> Consolidation.    The accompanying financial statements are presented on a consolidated basis and include the accounts of Southwest Gas Corporation and all subsidiaries. All significant intercompany balances and transactions have been eliminated with the exception of transactions between Southwest and NPL in accordance with accounting treatment for rate-regulated entities. </div> <div> Net Utility Plant.    Net utility plant includes gas plant at original cost, less the accumulated provision for depreciation and amortization, plus the unamortized balance of acquisition adjustments. Original cost includes contracted services, material, payroll and related costs such as taxes and benefits, general and administrative expenses, and an allowance for funds used during construction, less contributions in aid of construction. </div> <div> Deferred Purchased Gas Costs.    The various regulatory commissions have established procedures to enable Southwest to adjust its billing rates for changes in the cost of natural gas purchased. The difference between the current cost of gas purchased and the cost of gas recovered in billed rates is deferred. Generally, these deferred amounts are recovered or refunded within one year. </div> <div> Income Taxes.    The Company uses the asset and liability method of accounting for income taxes. Under the asset and liability method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the period that includes the enactment date. For regulatory and financial reporting purposes, investment tax credits ("ITC") related to gas utility operations are deferred and amortized over the life of related fixed assets. </div> <div> Cash and Cash Equivalents.    For purposes of reporting consolidated cash flows, cash and cash equivalents include cash on hand and financial instruments with a purchase-date maturity of three months or less. </div>   <div> Accumulated Removal Costs.    Approved regulatory practices allow Southwest to include in depreciation expense a component to recover removal costs associated with utility plant retirements. In accordance with the Securities and Exchange Commission's ("SEC") position on presentation of these amounts, management has reclassified estimated removal costs from accumulated depreciation to accumulated removal costs within the liabilities section of the balance sheets. The reclassified amounts are presented in the table below (thousands of dollars):   <div align="right"> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="96%"> <tr><td width="66%"> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="11%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">December 31, 2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">December 31, 2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Accumulated removal costs</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">233,000 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">211,000 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table></div></div> <div> Gas Operating Revenues.    Revenues are recorded when customers are billed. Customer billings are based on monthly meter reads and are calculated in accordance with applicable tariffs and state and local laws, regulations, and agreements. An estimate of the amount of natural gas distributed, but not yet billed, to residential and commercial customers from the latest meter reading date to the end of the reporting period is also recognized as accrued utility revenue. Revenues also include the net impacts of margin tracker/decoupling accruals. The Company acts as an agent for state and local taxing authorities in the collection and remission of a variety of taxes, including franchise fees, sales and use taxes, and surcharges. These taxes are not included in gas operating revenues, except for certain franchise fees in California operating jurisdictions which are not significant. The Company uses the net classification method to report taxes collected from customers to be remitted to governmental authorities. </div> <div> Construction Revenues.    The majority of NPL contracts are performed under unit price contracts. Generally, these contracts state prices per unit of installation. Typical installations are accomplished in two weeks or less. Revenues are recorded as installations are completed. Long-term fixed-price contracts use the percentage-of-completion method of accounting and, therefore, take into account the cost, estimated earnings, and revenue to date on contracts not yet completed. The amount of revenue recognized is based on costs expended to date relative to anticipated final contract costs. Revisions in estimates of costs and earnings during the course of the work are reflected in the accounting period in which the facts requiring revision become known. If a loss on a contract becomes known or is anticipated, the entire amount of the estimated ultimate loss is recognized at that time in the financial statements. </div> <div> Construction Expenses.    The construction expenses classification in the income statement includes payroll expenses, job-related equipment costs, direct construction costs, gains and losses on equipment sales, general and administrative expenses, and office-related fixed costs of NPL. </div> <div> Net Cost of Gas Sold.     Components of net cost of gas sold include natural gas commodity costs (fixed-price and variable-rate), pipeline capacity/transportation costs, and actual settled costs of natural gas derivative instruments. Also included are the net impacts of PGA deferrals and recoveries. </div> <div> Operations and Maintenance Expense.    For financial reporting purposes, operations and maintenance expense includes Southwest's operating and maintenance costs associated with serving utility customers, uncollectible expense, administrative and general salaries and expense, employee benefits expense, and legal expense (including injuries and damages). </div> <div> Depreciation and Amortization.    Utility plant depreciation is computed on the straight-line remaining life method at composite rates considered sufficient to amortize costs over estimated service lives, including components which compensate for removal costs (net of salvage value), and retirements, as approved by the appropriate regulatory agency. When plant is retired from service, the original cost of plant, including cost of removal, less salvage, is charged to the accumulated provision for depreciation. Other regulatory assets, including acquisition adjustments, are amortized when appropriate, over time periods authorized by regulators. Nonutility and construction services-related property and equipment are depreciated on a straight-line method based on the estimated useful lives of the related assets. Costs and gains related to refunding utility debt and debt issuance expenses are deferred and amortized over the weighted-average lives of the new issues and become a component of interest expense. </div> <div> Allowance for Funds Used During Construction ("AFUDC").    AFUDC represents the cost of both debt and equity funds used to finance utility construction. AFUDC is capitalized as part of the cost of utility plant. The debt portion of AFUDC is reported in the consolidated statements of income as an offset to net interest deductions and the equity portion is reported as other income. Utility plant construction costs, including AFUDC, are recovered in authorized rates through depreciation when completed projects are placed into operation, and general rate relief is requested and granted.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="79%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2009 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr><td valign="bottom"> (In thousands)</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> AFUDC:</td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr><td valign="top"> Debt portion</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">718 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">512 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">957 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Equity portion</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">1,154 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">945 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">1,221 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr> <tr><td valign="top"> AFUDC capitalized as part of utility plant</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">1,872 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">1,457 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">2,178 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table></div> <div> Other Income (Deductions).    The following table provides the composition of significant items included in Other income (deductions) on the consolidated statements of income (thousands of dollars):   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="78%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2009 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Change in COLI policies</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">700 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">9,770 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">8,546 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr><td valign="top"> Interest income</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">485 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">194 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">271 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Pipe replacement costs</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(4,761 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(5,024 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(2,642 </td> <td valign="bottom" nowrap="nowrap">)  </td></tr> <tr><td valign="top"> Miscellaneous income and (expense)</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(1,836 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">(1,090 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom" align="right">470 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Total other income (deductions)</td> <td valign="bottom">   </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">(5,412 </td> <td valign="bottom" nowrap="nowrap">)  </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">3,850 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">  </td> <td valign="bottom">$ </td> <td valign="bottom" align="right">6,645 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table> Included in the table above is the change in cash surrender values of company-owned life insurance ("COLI") policies (including net death benefits recognized). These life insurance policies on members of management and other key employees are used by Southwest to indemnify itself against the loss of talent, expertise, and knowledge, as well as to provide indirect funding for certain nonqualified benefit plans. Current tax regulations provide for tax-free treatment of life insurance (death benefit) proceeds. Therefore, the change in the cash surrender value components of COLI policies, as they progress towards the ultimate death benefits, is also recorded without tax consequences. Pipe replacement costs include amounts associated with certain Arizona non-recoverable pipe replacement work. </div> <div> Earnings Per Share.     Basic earnings per share ("EPS") are calculated by dividing net income by the weighted-average number of shares outstanding during the period. Diluted EPS includes the effect of additional weighted-average common stock equivalents (stock options, performance shares, and restricted stock units). Unless otherwise noted, the term "Earnings Per Share" refers to Basic EPS. A reconciliation of the shares used in the Basic and Diluted EPS calculations is shown in the following table. Net income was the same for Basic and Diluted EPS calculations.   <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="79%"> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="2%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2011 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2010 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">   </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" align="center">2009 </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td></tr> <tr><td valign="bottom"> (In thousands)</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Average basic shares</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,858 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,405 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">44,752 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr><td valign="top"> Effect of dilutive securities:</td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Stock options</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">52 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">56 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">14 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr><td valign="top"> Performance shares</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">271 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">260 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">216 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Restrictled stock units</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">110 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">102 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">80 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr> <tr><td valign="top"> Average diluted shares</td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">46,291 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,823 </td> <td valign="bottom" nowrap="nowrap">   </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom" align="right">45,062 </td> <td valign="bottom" nowrap="nowrap">   </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td> <td valign="bottom">   </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td>  </td></tr></table></div>   <div> Out-of-Period Adjustment.    In September 2011, the Company identified an isolated error in a regulatory deferral mechanism that overstated revenues by $3.7 million for periods prior to the third quarter of 2011. Management concluded the error was not material to any individual prior interim or annual period (or to the current annual period) and, therefore, the error was corrected during the third quarter of 2011. The effect was a decrease in revenues and regulatory assets of $ 3.7  million, of which $2.9 million pertains to years prior to 2011. </div> Recently Issued Accounting Standards Updates.    In May 2011, the Financial Accounting Standards Board ("FASB") issued the update "Fair Value Measurement (Topic 820) Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS." The amended guidance includes several new fair value disclosure requirements, including, among other things, information about transfers between Level 1 and Level 2 of the fair value hierarchy, enhanced information about valuation techniques and unobservable inputs used in Level 3 fair value measurements, and a narrative description of Level 3 measurements' sensitivity to changes in unobservable inputs. For the Company, the update is effective prospectively beginning January 2012. The adoption of the update is not expected to significantly impact the disclosures of the Company. In June 2011, The FASB issued the update "Comprehensive Income (Topic 220) Presentation of Comprehensive Income" which eliminates the current option to report the components of other comprehensive income in the statement of changes in equity. An entity will have the option to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in one continuous statement of comprehensive income or in two separate but consecutive statements. The update includes no changes to the components that are recognized in net income or other comprehensive income under current U.S. GAAP. In December 2011, the FASB issued the update "Comprehensive Income (Topic 220) Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05" to defer the requirement in the previous update to present reclassifications out of accumulated other comprehensive income separately in the income statement. The Company chose to present two separate but consecutive statements and to adopt the update as of December 31, 2011, as permitted. In September 2011, the FASB issued the update "Intangibles – Goodwill and Other (Topic 350) Testing Goodwill for Impairment." The update is intended to simplify how entities test goodwill for impairment. The update permits an entity to first assess qualitative factors to determine whether it is "more likely than not" that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test described in Topic 350 "Intangibles – Goodwill and Other." The more-likely-than-not threshold is defined as having a likelihood of more than 50%. The Company chose to adopt the update as of December 31, 2011 as permitted. The update did not have an impact on the Company's financial position or results of operations. In December 2011, the FASB issued the update "Balance Sheet (Topic 210)." The update requires an entity to disclose information about financial instruments and derivative instruments that are either offset or subject to an enforceable master netting arrangement or similar agreement. This information is intended to enable users of an entity's financial statements to understand the effect of those arrangements on the entity's financial position. The Company will adopt this update, as required, on January 1, 2013 for interim and annual reporting periods. All disclosures are required to be provided retrospectively for all periods presented. This update is not expected to have a material impact on the Company's disclosures. Subsequent Events.    Management of the Company monitors events occurring after the balance sheet date and prior to the issuance of the financial statements to determine the impacts, if any, of events on the financial statements to be issued and has made appropriate disclosures. <div> </div></div> </div> </div>

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<div> <table style="border-collapse: collapse;" border="0" cellspacing="0" cellpadding="0" width="100%" align="center"> <tr><td width="86%"> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td> <td valign="bottom" width="3%"> </td> <td> </td> <td> </td> <td> </td></tr> <tr><td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom">  </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2011</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td> <td style="border-bottom: #000000 1px solid;" valign="bottom" colspan="2" align="center">2010</td> <td style="border-bottom: #000000 1px solid;" valign="bottom"> </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Unrecognized tax benefits at beginning of year</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,445</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,445</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Gross increases – tax positions in prior period</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Gross decreases – tax positions in prior period</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Gross increases – current period tax positions</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Gross decreases – current period tax positions</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr><td valign="top"> Settlements</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr bgcolor="#cceeff"><td valign="top"> Lapse of statute of limitations</td> <td valign="bottom">  </td> <td valign="bottom"> </td> <td valign="bottom" align="right">(1,445</td> <td valign="bottom" nowrap="nowrap">) </td> <td valign="bottom"> </td> <td valign="bottom"> </td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr> <tr><td valign="top"> Unrecognized tax benefits at end of year</td> <td valign="bottom">  </td> <td valign="bottom">$</td> <td valign="bottom" align="right">—</td> <td valign="bottom" nowrap="nowrap">  </td> <td valign="bottom"> </td> <td valign="bottom">$</td> <td valign="bottom" align="right">1,445</td> <td valign="bottom" nowrap="nowrap">  </td></tr> <tr style="font-size: 1px;"><td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td> <td valign="bottom"> </td> <td valign="bottom">  </td> <td valign="bottom">  </td> <td> </td></tr></table> </div>

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45405000

45858000

Tax amounts are calculated using a 38% rate. amounts subsequently recognized as adjustments to other comprehensive income as those amounts are amortized as components of net periodic benefit cost. (5) The assets in the above table exceed the market value of plan assets shown in the funded status table by $928,000 (qualified retirement plan - $918,000, PBOP - $10,000) and $5.6 million (qualified retirement plan - $5.4 million, PBOP - $200,000) for 2011 and 2010, respectively, which includes a payable for securities purchased, partially offset by receivables for interest, dividends, and securities sold. At December 31, 2011, 2.1 million common shares were registered and available for issuance under provisions of the Company's various stock issuance plans. In addition, approximately 177,000 common shares are registered for issuance upon the exercise of options granted under the Stock Incentive Plan (see Note 11). amounts initially recognized in other comprehensive income (1) Equity securities, Real Estate Investment Trusts, and U.S. Government securities listed or regularly traded on a national securities exchange are valued at quoted market prices as of the last business day of the calendar year. The mutual funds category above is an intermediate-term bond fund whose manager employs multiple concurrent strategies and takes only moderate risk in each, thereby reducing the risk of poor performance arising from any single source and a balanced fund that invests in a diversified portfolio of common stocks, preferred stocks and fixed-income securities. Strategies utilized by the bond fund include duration management, yield curve or maturity structuring, sector rotation, and all bottom-up techniques including in-house credit and quantitative research. Strategies employed by the balanced fund include pursuit of regular income, conservation of principal, and an opportunity for long-term growth of principal and income. (2) The fair value of investments in debt securities with remaining maturities of one year or more is determined by dealers who make markets in such securities or by an independent pricing service, which considers yield or price of bonds of comparable quality, coupon, maturity, and type. The pooled funds and mutual funds are two collective short-term funds that invest in Treasury bills and money market funds. These funds are used as a temporary cash repository for the pension plan's various investment managers. (3) Assets not considered Level 1 or Level 2 are valued using assumptions based on the best information available under the circumstances, such as investment manager pricing. The commingled equity funds include private equity funds that invest in international securities. These funds are shown in the above table at net asset value. Investment strategies employed by the funds include: • Investing in various industries with growth and reasonable valuations, avoiding highly cyclical industries • Diversification by country, limiting exposure in any one country • Emerging markets (4) The guaranteed investment contracts/guaranteed annuity contracts are annuity insurance contracts used to pay the pensions of employees who retired prior to 1989. The balance of the account disclosed in the above table is the contract value, which is the result of deposits, withdrawals, and interest credits. Represents the impact of regulatory deferral accounting treatment under U.S. GAAP for rate-regulated entities. The sum of quarterly earnings (loss) per average common share may not equal the annual earnings (loss) per share due to the ongoing change in the weighted-average number of common shares outstanding. Included in Deferred charges and other assets on the Consolidated Balance Sheets. Recovery period is greater than five years. (See Note 10). Included in Prepaids and other current assets on the Consolidated Balance Sheets and recovered over one year or less. Balance recovered or refunded on an ongoing basis with interest. Other regulatory assets including deferred costs associated with rate cases, regulatory studies, and state mandated public purpose programs (including low income and conservation programs), as well as margin and interest-tracking accounts, amounts associated with accrued absence time, and deferred post-retirement benefits other than pensions. Recovery periods vary. Included in Deferred charges and other assets on the Consolidated Balance Sheets. Recovered over life of debt instruments. The following table details the regulatory assets/(liabilities) offsetting the derivatives (Swaps) at fair value in the balance sheets (thousands of dollars). The actual amounts, when realized at settlement, become a component of purchased gas costs under the Company's purchased gas adjustment ("PGA") mechanisms. (See Note 13). Balance recovered over a four-year period beginning in the fourth quarter of 2009. Included in Other current liabilities on the Consolidated Balance Sheet. Other regulatory liabilities includes amounts associated with income tax and gross-up. Included in Other deferred credits on the Consolidated Balance Sheet. Amortized over life of debt instruments. *Includes shares converted for taxes and retiree payouts.