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. 27 Original Sheet No. 27 : Effective

RATE SCHEDULE TF-1

Firm Transportation

(Continued)

12. CONTRACT TERM EXTENSIONS (Continued)

12.4 Extension for a Portion of Contract Rights. If a Shipper with the

contractual right in its Service Agreement to extend the primary term of

its Service Agreement under a contractual rollover or evergreen

provision for only a portion of its firm contract rights elects to

exercise such right, the aggregate MDQs and aggregate MDDOs for the

extended term must be retained by the same percentage as the Contract

Demand is retained. Shipper may specify the MDQs it wishes to retain at

each Receipt Point and the MDDOs it wishes to retain at each Delivery

Point.

13. SEGMENTATION

13.1 To the extent operationally feasible, a Shipper may temporarily

segment its capacity into separate parts for its own use or for the

purpose of releasing capacity to a Replacement Shipper. Transporter

will respond to a Shipper's segmentation request within two business

days following the request; and if the segmentation request is approved,

Transporter will issue new Service Agreements for each of the segments

within one hour of notification to the Shipper that the request is

approved.

13.2 Transporter will permit nominations of forward hauls up to

Contract Demand and backhauls up to Contract Demand to the same point at

the same time for segmented capacity.

13.3 Segmentation without Capacity Release. A Shipper that wishes to

segment its capacity into separate parts for its own use is subject to

the same procedures as apply to the temporary capacity release of

segmented capacity under Sections 22 and 23 of the General Terms and

Conditions except that the Shipper's release of capacity to itself will

always be non-biddable. Such transactions will be treated as temporary

capacity releases with the Shipper acting as both the Releasing Shipper

and the Replacement Shipper. New Service Agreements will be executed

with the Shipper for all new segments. Such Shipper also is

specifically subject to the following:

(a) Capacity between a Shipper's primary receipt point(s) and

primary delivery point(s) may be segmented into separate Service

Agreements for a Shipper's own use, provided that such

segmentation is operationally feasible and provided that firm

capacity is available at and between the designated points;