Southwest Gas Storage Company

First Revised Volume No. 1

Effective Date: 12/15/1999, Docket: RP00- 58-000, Status: Effective

Original Sheet No. 219 Original Sheet No. 219 : Effective

CAPACITY RELEASE

FORM OF SERVICE AGREEMENT

CONTRACT NO. __________

THIS AGREEMENT is made effective as of the ______ day

of _________________________, ______, by and between:

SOUTHWEST GAS STORAGE COMPANY, (hereinafter called "Southwest"), a

Delaware Corporation,

and

(hereinafter called "Replacement Shipper").

In consideration of the mutual covenants and agreements as herein set

forth, both Southwest and Replacement Shipper covenant and agree as

follows:

ARTICLE 1 - SERVICE

For each occasion that Replacement Shipper obtains capacity from a

Releasing Shipper through Southwest's capacity release program, an

Addendum in the form of Exhibit A, attached hereto will be made a part

hereof. The specific terms and conditions of each release shall be

reflected in each Addendum, which shall be incorporated and made a part

of this Agreement, and which together shall constitute the terms and

conditions of Southwest's service for each release.

Southwest agrees to receive at the Points of Receipt and

deliver at the Points of Delivery, on a firm basis, Quantities of

Natural Gas up to the Maximum Annual Quantity obtained from the

Releasing Shipper. The Maximum Annual Quantity is stated in delivered

Quantities, for which received Quantities must be adjusted for fuel

usage and lost or unaccounted for gas as set out in the then-effective,

applicable rates and charges under Southwest's Rate Schedules applicable

to the Releasing Shipper.