Southwest Gas Storage Company

First Revised Volume No. 1

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

Original Sheet No. 203 Original Sheet No. 203 : Effective

RATE SCHEDULE FSS

FIRM STORAGE SERVICE

FORM OF STORAGE SERVICE AGREEMENT

(Continued)

ARTICLE 8 - NOMINATIONS AND NOTICES

Periodic scheduling of the Quantities of service requested

hereunder must be provided by Shipper to Southwest, at the times and

according to the procedures specified in Section 3 of the General Terms

and Conditions. Except as otherwise specified, any other notice,

request, demand, statement or bill provided for in the General Terms and

Conditions and any other notice which either Southwest or Shipper may

desire to give to the other(s), shall be in writing and shall be

considered as duly delivered when mailed by registered mail to the Post

Office address of the other(s), or at such other address as may be

designated by formal written notice. Routine communications and bills

shall be considered as duly delivered when mailed by registered or

ordinary mail or an equivalent. The Post Office addresses of both

Southwest and Shipper are as follows:

Shipper:

Billing:

Nomination and

Scheduling:

All Other: