Puget Sound Energy, Inc.

Original Volume No. 1

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Effective Date: 09/30/2008, Docket: RP08-597-000, Status: Effective

Original Sheet No. 134 Original Sheet No. 134

. .

AMENDMENT NO. 9

to

JACKSON PRAIRIE GAS STORAGE PROJECT AGREEMENT

This Amendment is entered into as of the 29th day of August, 2008, by

and between Northwest Pipeline GP ("Northwest"), a Delaware partnership, Puget

Sound Energy, Inc. ("Puget"), a Washington corporation and Avista Corporation

("Avista"), a Washington corporation, collectively "the Owners."

RECITALS:

A. WHEREAS, Northwest, Puget and Avista are parties to that certain

Jackson Prairie Gas Storage Project ("Storage Project") Agreement dated

January 15, 1998, as amended ("Agreement");

B. WHEREAS, a phased expansion of the storage capacity in the Storage

Project has been authorized, as described in a prior notice application

filed with the Federal Energy Regulatory Commission in Docket No. CP02-

384;

C. WHEREAS, the procedures applicable to the development of the

authorized phased storage capacity expansion, as set forth in Exhibit G

to the Agreement, specify that the expansion phases are based on a March

through February water withdrawal/gas injection cycle;

D. WHEREAS, Article 4.6 of the Agreement provides that interim

amendments to Exhibits C, D, E and F (as appropriate) will be made upon

completion of each phase of a phased expansion;

E. WHEREAS, the Owners desire to amend Exhibits C, D and E to reflect

the February 29, 2008 completion of the sixth phase of the authorized

storage capacity expansion;

F. WHEREAS, the Owners also desire to amend Exhibit F to reflect

their decision to slightly liberalize the Operating Rules to allow an

Owner to utilize 100% of its respective Seasonal Working Gas Quantity

for the Storage Cycle even if the Owner's Working Gas Inventory is only

97%full on the first day of the Storage Cycle;