Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

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

First Revised Sheet No. 221 First Revised Sheet No. 221

Superseding: Original Sheet No. 221

GENERAL TERMS AND CONDITIONS

(Continued)

12. SCHEDULING PRIORITIES AND CURTAILMENT POLICY (Continued)

its operationally available capacity for Nominations that have not

already been scheduled for a given Gas Day in accordance with the

following priorities of service:

(a) First, Nominations for firm service under Rate Schedule SGS-

2F and Transporter's firm balancing rights will be scheduled. If

all such Nominations cannot be accommodated, available capacity

for injections will be allocated pro rata based on Transporter's

and Shipper's Storage Capacities and available capacity for

withdrawals will be allocated pro rata based on Transporter's and

Shipper's Contract Demand, which is subject to the limitations in

Rate Schedule SGS-2F, Section 9.2.

(b) Second, Nominations for deliveries of Deferred Exchange

Quantities at Jackson Prairie under Rate Schedule DEX-1, up to the

Daily Delivery Quantity, will be scheduled. If all such

Nominations cannot be accommodated, capacity will be allocated

based on rate, highest to lowest. For services at the same rates,

any necessary allocations of available capacity will be pro rata

based on otherwise acceptable and confirmable Nominations.

balancing requirements will be scheduled.

(d) Fourth, Nominations (including Shipper's requests for in-

ground storage transfers) for interruptible storage capacity under

Rate Schedules SGS-2F (as best-efforts), SGS-2I and/or PAL will be

scheduled. If all such storage capacity Nominations cannot be

accommodated, available capacity will be allocated based on rate,

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

allocations of available capacity will be pro rata based on

otherwise acceptable and confirmable Nominations. To the extent

there is more storage capacity than there is injection and/or

withdrawal capacity, Transporter will separately and subsequently

allocate capacity for in-ground transfer requests using the

methodologies herein.