Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

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Effective Date: 12/01/2009, Docket: RP10-85-000, Status: Effective

Second Revised Sheet No. 327 Second Revised Sheet No. 327

Superseding: First Revised Sheet No. 327

FORM OF RATE SCHEDULE SGS-2F SERVICE AGREEMENT

(Continued)

[Temporary Capacity Release Replacement Contract Version]

EXHIBIT A

[Dated and Effective _______________]

(or)

[Dated _______________, Effective _______________]

to the

Rate Schedule SGS-2F Service Agreement

(Contract No. ________)

between Northwest Pipeline GP

and ______________________

(Releasing Shipper/Contract No.: _______________)

SERVICE DETAILS

1. Customer Category: [Pre-Expansion Shipper] or [Expansion Shipper]

2. Contract Demand: _______ Dth per day

3. (The following applies to Pre-Expansion Shipper)

Storage Capacity: _______ Dth

(The following applies to Expansion Shipper)

Storage Capacity: _____ percent of Transporter's share of the

incremental storage working gas capacity being developed in the phased

Jackson Prairie Capacity Expansion in Docket No. CP02-384 that

Transporter makes available for incremental storage service, in monthly

increments effective the first day of the month, up to a total no

greater than _______ Dth

(Notice of Expansion Shipper's specific monthly increases in Storage

Capacity quantity will be provided no later than 3 days after the first

day of each month.)