Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

Effective Date: 02/20/2009, Docket: RP09-227-000, Status: Effective

Second Revised Sheet No. 7A Second Revised Sheet No. 7A

Superseding: First Revised Sheet No. 7A

STATEMENT OF RATES (Continued)

Effective Rates Applicable to Rate Schedules SGS-2F and SGS-2I (Continued)

Footnotes (Continued)

(2) Rates are daily rates computed on the basis of 365 days per year, except

that rates for leap years are computed on the basis of 366 days.

Rates are also applicable to capacity release service except for short-

term capacity release transactions for a term of one year or less that

take effect on or before one year from the date on which Transporter is

notified of the release, which are not subject to the stated maximum

tariff rate. (Section 22 of the General Terms and Conditions describes

how bids for capacity release will be evaluated.) The Withdrawal Charge

and Storage Charge are applicable to Replacement Shippers bidding for

capacity released on a one-part volumetric bid basis.

(3) Transporter will file proposed tariff sheets listing the phased rates

associated with the Expansion Shippers' Capacity Demand Charge and

Storage Charge rates no sooner than 60 days and no later than 30 days

prior to the proposed effective date for each phase pursuant to the

Commission order in Docket No. CP02-384.

(4) Upon the in-service of the deliverability expansion (November 1, 2008),

the Expansion Shippers Demand Charge and the Volumetric Bid Rate

Withdrawal Charge will be effective on an interim basis until the

working gas storage capacity expansion is completed.

(5) Upon the completion of the capacity expansion, the Expansion Shippers'

Capacity Demand Charge and Demand Charge rates along with the Volumetric

Bid related storage charge and Withdrawal Charge rates will be revised

to reflect an allocation of the aggregated costs split 50/50 between the

capacity expansion and the deliverability expansion.