Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

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Effective Date: 01/31/2008, Docket: RP08-130-000, Status: Effective

Original Sheet No. 61 Original Sheet No. 61 : Effective

RATE SCHEDULE SGS-2I

Storage Gas Service - Interruptible (Continued)

2. APPLICABILITY AND CHARACTER OF SERVICE (Continued)

level, the seven day period continues to apply to that portion of

Shipper's Working Gas Inventory that is in excess of the revised level.

If the revised level is lower than the previously specified level,

requiring additional gas to be withdrawn, the seven day period

applicable to the volume of Shipper's Working Gas Inventory in excess of

the previously specified level is still valid but a new seven day period

will apply to the volume of Shipper's Working Gas Inventory that is in

excess of the newly specified level.

However, if Shipper has nominated Working Gas Inventory from the

Jackson Prairie Storage Project using primary Receipt and Delivery

Points under a Rate Schedule TF-1 or Rate Schedule TF-2 service

agreement and Transporter is unable to provide the related

transportation, then such seven day period shall be extended by one day

for each day Transporter is unable to render such transportation.

Transporter shall not extend the seven day period if Transporter is

unable to provide the related transportation under a Rate Schedule TF-1

Service Agreement using alternate points or overrun nominations or under

a Rate Schedule TI-1 Service Agreement. If Shipper fails to reduce its

Working Gas Inventory to the level specified by Transporter within seven

days (or any applicable extensions) of receiving notice from

Transporter, then Transporter shall take title to all of Shipper's

Working Gas Inventory in excess of the Working Gas Inventory level

specified by Transporter, free and clear of any adverse claims.

3. MONTHLY RATE

Each month, Shipper will pay Transporter for service rendered under

this Rate Schedule the amount specified in this Section 3, as

applicable.

3.1 Volumetric Charge. Shipper will pay Transporter for service

rendered hereunder a volumetric charge in an amount equal to the sum of

the daily product of Shipper's Working Gas Inventory and the Maximum

Currently Effective Rate per Dth as set forth on Sheet No. 7 of this

Tariff.

The related transportation of gas to and from the Jackson Prairie

Storage Project shall be subject to separate transportation charges

under Transporter's applicable open-access Transportation Rate

Schedules. The volumetric charge set forth in this Section 3 is

exclusive of the aforementioned transportation charges.