Southwest Gas Storage Company

First Revised Volume No. 1

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Effective Date: 03/01/2004, Docket: RP04-146-000, Status: Effective

Second Revised Sheet No. 111 Second Revised Sheet No. 111 : Effective

Superseding: First Revised Sheet No. 111

GENERAL TERMS AND CONDITIONS

(Continued)

3. NOMINATION AND SCHEDULING OF SERVICES (Continued)

The intra-day nomination timeline in Central Time on the Day

prior to gas flow shall be the following:

The Evening Nomination Cycle

6:00 p.m. Nomination leaves control of the Shipper

6:15 p.m. Receipt of nomination by Southwest

(including from title transfer tracking

service providers)

6:30 p.m. Southwest provides quick response for

validity of data elements

9:00 p.m. Completed confirmations from upstream and

downstream connected parties

10:00 p.m. Scheduled Quantities provided by Southwest to

affected Shippers, point operators and bumped

parties (notice to bumped parties)

Scheduled Quantities resulting from an Evening Nomination

that does not cause another Shipper to receive notice that it

is being bumped should be effective at 9:00 a.m. on the gas

Day; and when an Evening Nomination causes another Shipper to

receive notice that it is being bumped, the scheduled

Quantities should be effective at 9:00 a.m. on the gas Day.

Bumped parties shall be notified of such bump through the

Messenger system and the Web Site and by telephone and

facsimile transmission.

The intra-day nomination timelines in Central Time on the Day

of gas flow shall be the following:

(1) The Intra-day 1 Nomination Cycle

10:00 a.m. Nomination leaves control of the Shipper

10:15 a.m. Receipt of nomination by Southwest

(including from title transfer tracking

service providers)

10:30 a.m. Southwest provides quick response for

validity of data elements