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. 50 First Revised Sheet No. 50

Superseding: Original Sheet No. 50

RATE SCHEDULE SGS-2F

Storage Gas Service - Firm

1. AVAILABILITY

This Rate Schedule is available to any Shipper for the purchase of

natural gas storage service from Transporter when Shipper and

Transporter have executed a Service Agreement for the storage of gas

under this Rate Schedule and have arranged for the related

transportation of gas to and from the Jackson Prairie Storage Project

under one of Transporter's transportation rate schedules.

2. APPLICABILITY AND CHARACTER OF SERVICE

2.1 Applicability. This Rate Schedule shall apply to firm storage gas

service at the Jackson Prairie Storage Project. The executed Service

Agreement for service under this Rate Schedule will specify the Shipper

category, i.e., whether the Shipper is a Pre-Expansion Shipper or an

Expansion Shipper. The Jackson Prairie Storage Project capacity

available for this Rate Schedule will be Transporter's undivided

interest as an owner in the Project, excluding any portion of such

interest which may be authorized for use by Transporter for

transportation balancing. Delivery of natural gas by Shipper to

Transporter for injection and by Transporter to Shipper upon withdrawal

shall be at the point of interconnection between the Jackson Prairie

Storage Project and Transporter's main transmission line.

2.2 Storage Components. Firm storage service consists of Transporter's

injection storage and withdrawal of Shipper's gas.

2.3 Character of Service. Storage gas service rendered to Shipper

under this Rate Schedule, up to Shipper's Contract Demand and Storage

Capacity and subject to the limitations of this Rate Schedule and the

executed Service Agreement, shall be firm and shall not be subject to

curtailment or interruption except as expressly provided in this Rate

Schedule and in the General Terms and Conditions. Storage gas service

rendered to Shipper under this Rate Schedule in excess of Shipper's

Contract Demand and Storage Capacity is not firm.

2.4 Capacity Release. Shippers releasing firm storage rights shall do

so in accordance with the capacity release provisions outlined in

Section 22 of the General Terms and Conditions. Any such release is

subject to the terms and conditions of this Rate Schedule.