Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

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Effective Date: 11/01/2009, Docket: RP09-1056-000, Status: Effective

First Revised Sheet No. 220 First Revised Sheet No. 220

Superseding: Original Sheet No. 220

GENERAL TERMS AND CONDITIONS

(Continued)

12. SCHEDULING PRIORITIES AND CURTAILMENT POLICY (Continued)

iii) All other Nominations for Secondary Firm Service.

If all such Nominations cannot be accommodated, available capacity

will be allocated pro rata based on nominating Shippers' CD.

(c) Third, Nominations for interruptible services and overrun

services will be scheduled. If all such Nominations cannot be

accommodated, available capacity will be allocated based on the

rates that apply to such services, from the highest to the lowest.

For services at the same rates, any necessary allocations of

available capacity will be pro rata based on otherwise acceptable

and confirmable Nominations. Interruptible and overrun services

are subject to bumping, as described in Section 12.6. For services

with Negotiated Rates, the rates used for scheduling priorities

are delineated in Section 12.5.

(i) Shippers that are not nominating at maximum rates and

desire to elevate their scheduling priority by agreeing to

pay a higher rate, not to exceed maximum rate, in the event

such higher rate is necessary to allow an otherwise

acceptable and confirmable Nomination to be scheduled, must

indicate their willingness to do so at the time of

Nomination.

(d) Fourth, Nominations for Makeup and Payback will be

scheduled. If all such Nominations cannot be accommodated,

available capacity will be allocated pro rata based on such

Nominations.

12.2 Scheduling Priorities for Jackson Prairie Storage

If Transporter determines that its operationally available injection,

withdrawal and storage capacities at the Jackson Prairie storage facility are

insufficient to accommodate Transporter's balancing needs as well as all

otherwise acceptable new Nominations for services under Rate Schedules SGS-2F,

SGS-2I, DEX-1 and PAL in any Nomination cycle, Transporter will schedule