Northwest Pipeline Corporation

First Revised Volume No. 1-A

Effective Date: 01/01/1993, Docket: RP93- 35-001, Status: Effective

Second Revised Sheet No. 436 Second Revised Sheet No. 436 : Effective

Superseding: Substitute First Revised Sheet No. 436

GENERAL TERMS AND CONDITIONS

(Continued)

19. SUPPLIER SETTLEMENT PAYMENT RECOVERY MECHANISM (Continued)

19.2 Definitions. (Continued)

Settlement Payments submitted in connection with

subsequent cost recovery filings submitted pursuant to

provisions of Order Nos. 500 and 528, et al., including

carrying charges on such amounts.

(d) Annual Recovery Period (Commodity SSP Surcharge) - The

period beginning on the April 1, 1989 effective date and

ending on March 31, 1990 and each April 1 through March 31

period thereafter, with the last such annual period to end

March 31, 1994.1/

(e) Total Recovery Period (Commodity SSP Surcharge) - The five

(5) year period commencing April 1, 1989 and ending March

31, 1994.1/

(f) Commodity SSP Account - An account maintained by

Transporter comprised of (1) the applicable percentage, as

defined in paragraph (c) above, of the total SSP as

defined in paragraph (b) above, (2) adjustments for

recoverable amounts included in Transporter's Commodity

SSP Surcharges and (3) interest commencing April 1, 1989,

for all Supplier Settlement Payments incurred by March 31,

1989, or commencing on the effective date of the tariff

sheets included in each of Transporter's tariff filings

which seek recovery of additional Supplier Settlement

Payments incurred after March 31, 1989, computed on the

monthly unrecovered balance in Transporter's Commodity SSP

Account.

(g) Affected Rate Schedules - The charges pursuant to this

Section affect Transporter's rate schedules included on

Sheet No. 201 of this FERC Gas Tariff First Revised Volume

No. 1-A.

_________________

1/ Transporter reserves the right to file for extended recovery periods in

the event that material SSP costs which result from the conclusion of

matters in litigation or arbitration are incurred by Seller in the

latter portion of the initial recovery period.