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. 138 Original Sheet No. 138

Exhibit E

(revised August 29, 2008 pursuant to Amendment No. 9)

to the

Jackson Prairie

Gas Storage Project Agreement

Storage Service Rights and Cushion Gas Requirement

(subject to the Operating Rules set forth on Exhibit F)

Btu conversion factor = 1.040 (the thermal amounts on this Exhibit are the

product of the volumetric amounts and the Btu conversion factor)

Part 1:

Firm

Owner Firm Injection Capability Withdrawal Deliverability

Mcf/Day Dth/Day Mcf/Day Dth/Day

Northwest 141,666 147,332 283,332 294,666

Avista 141,667 147,334 283,334 294,667

PSE 141,667 147,334 283,334 294,667

PROJECT 425,000 442,000 850,000 884,000

Best Efforts Firm

Owner Withdrawal Deliverability Working Gas Capacity* 1/

Mcf/Day Dth/Day Mcf Dth

Northwest 50,000 52,000 7,260,818 7,551,251

Avista 50,000 52,000 8,082,827 8,406,140

PSE 50,000 52,000 7,260,818 7,551,251

PROJECT 150,000 156,000 22,604,463 23,508,642

*Quantities subject to temporary reduction pursuant to Section 5.7.6.

Part 2:

Owner Cushion Gas Requirement 1/

Mcf Dth

Northwest 6,807,213 7,079,502

Avista 7,355,220 7,649,428

PSE 6,807,213 7,079,502

PROJECT 20,969,646 21,808,432

1/ In addition to the stated quantities, the Firm Working Gas Capacity and

Cushion Gas Requirement includes 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.