Puget Sound Energy, Inc.

Original Volume No. 1

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Effective Date: 06/22/2007, Docket: RP07-462-000, Status: Effective

Original Sheet No. 129 Original Sheet No. 129 : Effective

Exhibit C

(revised May 16, 2007 pursuant to Amendment No. 8)

to the

Jackson Prairie

Gas Storage Project Agreement

Certificated Characteristics and Capabilities

Characteristics and Capabilities of the Jackson Prairie Storage Project for

the 2007-2008 Storage Cycle and thereafter:*

Project Cushion Gas Requirement Not less than 20,561,732 Mcf

Zone 2 Not less than 16,561,732 Mcf

Zone 9 Not less than 4,000,000 Mcf

Project Working Gas Capacity Not more than 21,992,591 Mcf

Zone 2 Not more than 20,992,591 Mcf

Zone 9 Not more than 1,000,000 Mcf

Project Gas Capacity Not more than 42,554,323 Mcf

Zone 2 Not more than 37,554,323 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 Capacity

Expansion Project described in Exhibit G.