EXHIBIT 12

NORTHWEST PIPELINE GP
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
(Thousands of Dollars)

	Years Ended December 31,
	2007		2006		2005		2004		2003
			(Restated)		(Restated)		(Restated)		(Restated)
Earnings:
Income before income taxes	$	185,059	$	85,668	$	107,653	$	119,138	$	113,516
Add:
Fixed charges:
Income on long-term debt		46,828		43,649		38,164		38,721		37,144
Other interest expense		5,585		3,824		3,389		3,368		3,388
Rental expense representative of interest factor		521		693		854		1,002		1,350
Total fixed charges		52,934		48,166		42,407		43,091		41,882
Total earnings as adjusted	$	237,993	$	133,834	$	150,060	$	162,229	$	155,398
Fixed charges	$	52,934	$	48,166	$	42,407	$	43,091	$	41,882
Ratio of earnings to fixed charges		4.50		2.78		3.54		3.76		3.71

     As described in Item 8. Financial Statements and Supplementary Data – Notes to Consolidated Financial Statements — Note 1. Summary of Significant Accounting Policies – Basis of Presentation, we have restated prior periods to reflect Williams’ purchase price allocations in our financial statements.