Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

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Effective Date: 01/31/2008, Docket: RP08-130-000, Status: Effective

Original Sheet No. 57 Original Sheet No. 57 : Effective

RATE SCHEDULE SGS-2F

Storage Gas Service - Firm (Continued)

15. EVERGREEN PROVISION (Continued)

(a) The established rollover period will be:

(i) one month for a Service Agreement with a primary term

of less than one year; or

(ii) one year for a Service Agreement with a primary term

of one year or more.

(b) Either Transporter or Shipper may terminate the Service

Agreement in its entirety upon the primary term end date or upon

the conclusion of any evergreen rollover period thereafter by

giving the other party termination notice at least:

(i) ten Business Days before the termination date if

Section 15.2(a)(i) applies; or

(ii) one year before the termination date if Section

15.2(a)(ii) applies.

(c) The termination notice required under Section 15.2(b) will

be deemed given when posted on Transporter's Designated Site. If

Transporter gives termination notice, such termination notice also

will be given via Internet E-mail or fax if specified by Shipper

on the Business Associate Information form.

15.3 Grandfathered Unilateral Evergreen Provision. If a Shipper with a

Service Agreement containing a unilateral evergreen provision elects:

(i) to restate such Service Agreement in the format of the Form of

Service Agreement contained in this Tariff, or (ii) to permanently

release all or a portion of its firm contract rights, including its

unilateral evergreen rights, to a Replacement Shipper at the Maximum

Base Tariff Rate pursuant to Section 22.5 of the General Terms and

Conditions, then the Exhibit A of the applicable restated or replacement

Service Agreement will indicate that the following grandfathered

unilateral evergreen conditions will apply:

(a) The established rollover period will be one year, at

Shipper's sole option.