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

Sheet No. 0 Northwest Pipeline Corporation G P: Fourth Revised Volume No. 1

Sheet No. 0 : Effective

.

FERC GAS TARIFF

FOURTH REVISED VOLUME NO. 1

(Superseding Third Revised Volume No. 1 and

First Revised Volume No. 1-A)

Of

NORTHWEST PIPELINE GP

Filed with

FEDERAL ENERGY REGULATORY COMMISSION

Communications concerning this Tariff should be sent to:

Laren M. Gertsch, Director, Rates & Regulatory

Northwest Pipeline GP

295 Chipeta Way

Salt Lake City, Utah 84108

P.O. Box 58900

Salt Lake City, Utah 84158

Telephone: (801) 584-7200

Facsimile: (801) 584-7764