Southwest Gas Storage Company

First Revised Volume No. 1

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Effective Date: 02/23/2009, Docket: RP09-248-000, Status: Effective

Fourth Revised Sheet No. 123 Fourth Revised Sheet No. 123

Superseding: Third Revised Sheet No. 123

GENERAL TERMS AND CONDITIONS

(Continued)

6. CAPACITY RELEASE (Continued)

6.4 Bidding Process

(A) In order to submit a valid bid under this capacity release

program, any party, including a PRS, must be on the approved

bidders list. To be on the approved bidders list, a party

must meet the provisions of Section 2 herein and have

executed a Capacity Release Service Agreement with Southwest

in the form as set forth in this Tariff (Capacity Release

Service Agreement). A party shall remain on the approved

bidders list until such party notifies Southwest to the

contrary, no longer meets the credit qualifications in

Section 2.3 herein, or is suspended from the approved bidders

list in the event and for such time as such party fails to

pay part or all of the amount of any bill for service in

accordance with Section 12 herein.

(B) The capacity release timeline in Central Time is applicable

to all parties involved in the Capacity Release process;

however, it is only applicable if 1) all information provided

by the parties to the transaction is valid and 2) there are

no special terms or conditions of the release.

(1) For biddable releases (1 year or less)

On a Business Day

12:00 p.m. Time by which Releasing Shipper shall post

the Shipper Notice on the Messenger® system

1:00 p.m. Bidding period ends

Evaluation period begins during which

contingency is eliminated, determination of

best bid is made and ties are broken

2:00 p.m. Evaluation period ends and award posting if

no match required

Match or award is communicated

2:30 p.m. Match response is due

3:00 p.m. Award posting where match is required