Puget Sound Energy, Inc.

Original Volume No. 1

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Effective Date: 07/11/2005, Docket: RP05-374-000, Status: Effective

Original Sheet No. 119 Original Sheet No. 119 : Effective

Exhibit C

(revised May 26, 2005, pursuant to Amendment No. 6)

to the

Jackson Prairie

Gas Storage Project Agreement

Certificated Characteristics and Capabilities

Characteristics and Capabilities of the Jackson Prairie Storage Project for

the 2005-2006 Storage Cycle and thereafter:*

Project Cushion Gas Requirement Not less than 20,585,155 Mcf

Zone 2 Not less than 16,585,155 Mcf

Zone 9 Not less than 4,000,000 Mcf

Project Working Gas Capacity Not more than 20,677,733 Mcf

Zone 2 Not more than 19,677,733 Mcf

Zone 9 Not more than 1,000,000 Mcf

Project Gas Capacity Not more than 41,262,888 Mcf

Zone 2 Not more than 36,262,888 Mcf

Zone 9 Not more than 5,000,000 Mcf

Project Firm Withdrawal Deliverability Not more than 850,000 Mcf Daily

Project Best Efforts Deliverability Not more than 150,000 Mcf Daily

* In addition to the stated quantities, the certificated Characteristics and

Capabilities of the Jackson Prairie Storage Project include any portions of

the expanded cushion and working gas capacities developed, month to month,

during the current water withdrawal/gas injection cycle of the 2002-2008

Expansion Project described in Exhibit G.