Balance Sheet (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash	$ 0	$ 0
Receivables:
Trade	36,004	40,066
Affiliated companies	43	109
Advances to affiliate	248,656	201,265
Other	1,171	1,962
Materials and supplies	9,811	9,683
Exchange gas due from others	1,499	5,534
Prepayments and other	3,740	3,346
Total current assets	300,924	261,965
PROPERTY, PLANT AND EQUIPMENT, at cost	3,608,380	3,593,186
Less-Accumulated depreciation and amortization	1,722,847	1,673,315
Total property, plant and equipment, net	1,885,533	1,919,871
OTHER ASSETS:
Deferred charges	2,115	1,075
Right-of-use assets	17,401	18,101
Regulatory assets	20,934	21,935
Total other assets	40,450	41,111
Total assets	2,226,907	2,222,947
Payables:
Trade	13,475	15,635
Affiliated companies	12,161	9,172
Accrued liabilities:
Taxes, other than income taxes	10,520	9,913
Interest	5,505	5,505
Exchange gas due to others	1,457	4,468
Customer advances	6,208	4,109
Other	4,645	6,990
Total current liabilities	53,971	55,792
LONG-TERM DEBT	577,526	577,045
OTHER NONCURRENT LIABILITIES:
Asset retirement obligations	93,949	91,251
Regulatory liabilities	339,369	323,032
Lease liability	16,188	16,823
Other	5,306	5,695
Total other noncurrent liabilities	454,812	436,801
CONTINGENT LIABILITIES AND COMMITMENTS (Note 4)
MEMBER'S EQUITY:
Member's capital	1,073,892	1,073,892
Retained earnings	66,706	79,417
Total member's equity	1,140,598	1,153,309
Total liabilities and member's equity	$ 2,226,907	$ 2,222,947