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. 60 First Revised Sheet No. 60

Superseding: Original Sheet No. 60

RATE SCHEDULE SGS-2I

Storage Gas Service - Interruptible

1. AVAILABILITY

This open-access 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 interruptible

storage service at the Jackson Prairie Storage Project. 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 Service Components. Interruptible 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 shall be interruptible up to Shipper's

Interruptible Storage Capacity and Maximum Withdrawal Quantity, and

shall be subject to the executed Service Agreement, and the limitations

of this Rate Schedule. The scheduling priorities and curtailment policy

applicable to this service will be in accordance with Section 12 of the

General Terms and Conditions.

If and to the extent Shipper's Working Gas Inventory cannot

continue to be accommodated within the storage capacity available to

Transporter, for any reason, or such utilized storage capacity is needed

to meet Transporter's firm obligations under Rate Schedule SGS2F or

Transporter's system balancing requirements, Transporter will notify

Shipper that, within seven days of such notice, Shipper is required to

reduce the level of its Working Gas Inventory existing on the day of

such notice to a level specified by Transporter.

Prior to the end of any seven day period (or any extension of such

period, as applicable,) Transporter may notify Shipper that it has

revised the required level applicable to Shipper's Working Gas

Inventory. If the new level is higher than the previously specified