Northwest Pipeline Corporation

First Revised Volume No. 1-A

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Effective Date: 04/01/1993, Docket: RP93- 5-012, Status: Effective

Substitute Original Sheet No. 603 Substitute Original Sheet No. 603 : Effective

INDEX OF SHIPPERS

Seasonal Contract Demand Reduction Quantities

Applicable to Certain Transportation Shippers

Agmt Applicable Contract Demand

No. Name of Shipper Months Reduction Quantity

---- --------------- ---------- ------------------

F-26 LFC Gas Company January - December 703

F-49 Southwest Gas - Nevada April 5,711

F-49 Southwest Gas - Nevada May 8,147

F-49 Southwest Gas - Nevada June 9,041

F-49 Southwest Gas - Nevada July 10,185

F-49 Southwest Gas - Nevada August 10,446

F-49 Southwest Gas - Nevada September 9,435

F-49 Southwest Gas - Nevada October 4,947

F-48 Southwest Gas - No. California April 387

F-48 Southwest Gas - No. California May 547

F-48 Southwest Gas - No. California June 587

F-48 Southwest Gas - No. California July 668

F-48 Southwest Gas - No. California August 657

F-48 Southwest Gas - No. California September 595

F-48 Southwest Gas - No. California October 363

F-10 Washington Water Power June - September 10,549

F-47 Washington Water Power June - September 731