Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

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

Original Sheet No. 222B Original Sheet No. 222B

GENERAL TERMS AND CONDITIONS

(Continued)

12. SCHEDULING PRIORITIES AND CURTAILMENT POLICY (Continued)

(b) Second, Nominations for interruptible service under

Rate Schedules LS-2I and Nominations for overrun service under

Rate Schedules LS-1 and LS-2F will be scheduled. If all such

Nominations cannot be accommodated, available capacity will be

allocated according to the rates applicable to the service, from

highest to lowest. For services at the same rates, any necessary

allocations will be pro rata based on Nominations. For services

with Negotiated Rates, the rates used for scheduling priorities

are delineated in Section 12.5.

12.5 Negotiated Rate Used to Establish Priority

For non-firm services subject to Negotiated Rates, the rate used for

scheduling priorities will be:

(1) the lower of the Negotiated Rate or the corresponding

Recourse Rate, if the Negotiated Rate is a stated rate;

(2) the lower of the minimum Negotiated Rate or the

corresponding Recourse Rate, if the Negotiated Rate is a formula

rate with a specified minimum; or

(3) the corresponding minimum base rate set forth on the

Statement of Rates, if the Negotiated Rate is a formula rate

without a specified minimum.

12.6 Bumping

Previously Scheduled Quantities for interruptible, overrun or best-

efforts, and park and loan services may be bumped in accordance with the

following procedures:

(a) Transporter will give scheduling priority to Firm

Nominations submitted during the evening Nomination and intraday

1 Nomination cycles over previously Scheduled Quantities for

interruptible, overrun or best-efforts, and park and loan

services. The elapsed-prorated-scheduled quantity process will

apply to previously Scheduled Quantities bumped in the intraday 1

Nomination cycle.