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. 274-A Original Sheet No. 274-A : Effective

GENERAL TERMS AND CONDITIONS

(Continued)

25. AVAILABLE CAPACITY (Continued)

25.2 Posting (Continued)

Regardless of the termination notice, if no acceptable bids have

been received by Transporter at least 10 days prior to the date

capacity will become available, Transporter may post such capacity

for a subsequent bid period(s) of 24 hours.

If Transporter elects to reserve capacity for future service under

an expiring or terminating agreement as provided in either

Sections 25.2(c) or 25.2(d) below, Transporter will post such

capacity as provided in this Section 25.2(b) for use on an interim

basis, but Transporter will indicate in its posting that such

capacity is reserved for future use.

(c) Reserved Capacity. Transporter may elect to reserve for

future expansion projects any unsubscribed capacity or capacity

under expiring or terminating service agreements where such

agreements do not have a right of first refusal. If Transporter

elects to reserve capacity, it will notify Shippers of its intent

on the earlier of the following dates: (1) the date on which

expiring or terminating capacity is required to be posted in

accordance with Section 25.2(b) above, (2) the date on which

Transporter executes a Letter of Intent with a prospective Shipper

which requires the reservation of capacity or (3) the date on

which Transporter begins an open season for a related expansion

project.

Capacity may be reserved for up to one year prior to Transporter

filing for certificate approval for construction of the proposed

expansion and thereafter until such expansion project is placed

into service. Reserved capacity will be made available on an

interim basis and will be posted for competitive bid. If

certificate approval is not granted or if Transporter determines

that an expansion project should not or cannot be completed,

Transporter will post the reserved capacity for a bid period(s) of

no less than 24 hours and, in aggregate, no more than six (6)

months, subject to prior interim commitments of such capacity.

(d) Pre-Arranged Capacity. After available unsubscribed

capacity or capacity that will become available under an expiring

or terminating agreement is posted on Transporter's Designated