Balance Sheet (Unaudited) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
CURRENT ASSETS:
Cash	$ 6	$ 5
Receivables:
Trade	35,280	38,515
Affiliated companies	2,112	2,118
Advances to affiliate	81,117	45,045
Materials and supplies, less reserves of $14 at September 30, 2011 and $613 at December 31, 2010	11,180	11,719
Exchange gas due from others	1,911	2,323
Exchange gas offset	0	3,854
Prepayments and other	4,302	3,415
Total current assets	135,908	106,994
PROPERTY, PLANT AND EQUIPMENT, at cost	3,045,886	2,965,097
Less-Accumulated depreciation	1,068,974	1,017,634
Total property, plant and equipment, net	1,976,912	1,947,463
OTHER ASSETS:
Deferred charges	10,505	11,817
Regulatory assets	59,578	60,176
Total other assets	70,083	71,993
Total assets	2,182,903	2,126,450
Payables:
Trade	26,087	13,177
Affiliated companies	8,549	10,105
Accrued liabilities:
Taxes, other than income taxes	15,856	10,186
Interest	15,155	4,045
Exchange gas due to others	5,094	13,115
Exchange gas offset	1,162	0
Other	4,902	4,245
Total current liabilities	76,805	54,873
LONG-TERM DEBT	693,781	693,634
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES	102,065	88,347
CONTINGENT LIABILITIES AND COMMITMENTS (Note 2)
OWNER'S EQUITY:
Owner's capital	1,051,262	1,046,862
Retained earnings	258,699	242,396
Accumulated other comprehensive income	291	338
Total owner's equity	1,310,252	1,289,596
Total liabilities and owner's equity	$ 2,182,903	$ 2,126,450