Balance Sheet (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash	$ 100	$ 37
Receivables:
Trade	36,991	38,245
Affiliated companies	0	2,250
Advances to affiliate	53,301	52,024
Materials and supplies, less reserves of $52 at September 30, 2012 and $816 at December 31, 2011	9,995	10,488
Exchange gas due from others	1,828	3,441
Exchange gas offset	9	0
Prepayments and other	4,173	3,469
Total current assets	106,397	109,954
PROPERTY, PLANT AND EQUIPMENT, at cost	3,139,995	3,068,915
Less-Accumulated depreciation	1,143,715	1,076,943
Total property, plant and equipment, net	1,996,280	1,991,972
OTHER ASSETS:
Deferred charges	9,341	10,250
Regulatory assets	60,092	59,605
Total other assets	69,433	69,855
Total assets	2,172,110	2,171,781
Payables:
Trade	22,866	13,634
Affiliated companies	9,316	8,812
Accrued liabilities:
Taxes, other than income taxes	16,713	10,252
Interest	15,155	4,045
Exchange gas due to others	2,349	10,472
Exchange gas offset	0	2,241
Other	4,659	5,006
Total current liabilities	71,058	54,462
LONG-TERM DEBT	693,978	693,831
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES	89,236	103,041
CONTINGENT LIABILITIES AND COMMITMENTS (Note 3)
OWNER'S EQUITY:
Owner's capital	1,055,492	1,051,962
Retained earnings	262,116	268,209
Accumulated other comprehensive income	230	276
Total owner's equity	1,317,838	1,320,447
Total liabilities and owner's equity	$ 2,172,110	$ 2,171,781