Southwest Gas Storage Company

First Revised Volume No. 1

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

Original Sheet No. 113 Original Sheet No. 113 : Effective

GENERAL TERMS AND CONDITIONS

(Continued)

3. NOMINATION AND SCHEDULING OF SERVICES (Continued)

(E)Shipper may change the person designated to provide the

nomination information as set forth in the storage service

agreement. If Shipper designates another person to provide

this information, Southwest shall be entitled to rely on the

nominations previously provided by Shipper unless and until

Southwest receives written notice to the contrary.

(F)Nominations shall also specify such information necessary to

permit Southwest to accept Commission approved or permitted

standard data elements to perform service.

(G)Southwest shall have the unqualified right to commingle gas

stored hereunder with gas from other sources, and to treat and

handle all such gas as its own. It is recognized that gas

redelivered will not be the same molecules as those received

at the Point of Receipt.

3.2 Scheduling Procedure for Storage

The Quantities nominated for storage by Shipper shall be scheduled

by Southwest for injection, withdrawal and storage in the

following order:

(A)Firm storage service;

(B)Interruptible storage service charged the applicable Maximum

Rate;

(C)Interruptible storage service charged a rate less than the

applicable Maximum Rate in sequence starting with the rate

most proximate to the Maximum Rate;

Within each of these categories, storage shall be scheduled, to

the extent practicable, to maintain the existing volumes of

service to each Shipper. Next, within each of these categories,

storage shall be scheduled in sequence, starting with the earliest

date of request for such service, and shall be scheduled pro rata

for Quantities of interruptible service having the same date of

request, where there is insufficient capacity to serve all

nominations.

Authorized Overrun Withdrawal and Injection Quantities shall be

scheduled as interruptible.