Puget Sound Energy, Inc.

Original Volume No. 1

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Effective Date: 11/01/1998, Docket: CP98-250-002, Status: Effective

Original Sheet No. 21 Original Sheet No. 21 : Effective

activities associated therewith located in the vicinity of Jackson

Prairie, Lewis County, Washington.

1.53 Storage Gas Service Agreement

"Storage Gas Service Agreement" means any executed service

agreement for storage services in the Storage Field between

Northwest and any Person in the form set forth in Northwest's FERC

Gas Tariff.

1.54 Storage Project

"Storage Project" means the Storage Field, including the

individual Storage Reservoirs, and all equipment, plant, leases,

rights, rights of way, properties and facilities installed or to

be installed at or within the Storage Field or appurtenant thereto

including the Feeder Lines, except any facility comprising a part

of Northwest's Natural Gas Transmission System.

1.55 Storage Project Delivery Points

"Storage Project Delivery Point" means each point of

interconnection of the Feeder Lines and Northwest's Natural Gas

Transmission System. Meter stations are installed at each Storage

Project Delivery Point to measure the quantity of natural gas

injected into and withdrawn from the Storage Project.

1.56 Storage Reservoir

"Storage Reservoir" means those portions of the Storage Field

having a defined limit of porosity and permeability which can

effectively accept, retain and redeliver gas. Currently there are

two defined active storage reservoirs, designated as "Zone 2

Reservoir" (or "Zone 2") and "Zone 9 Reservoir" (or "Zone 9")

which provide the basis for the Storage Service Rights.