Southwest Gas Storage Company

First Revised Volume No. 1

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

Original Sheet No. 134 Original Sheet No. 134 : Effective

GENERAL TERMS AND CONDITIONS

(Continued)

9. CONDITIONS OF RECEIPT AND DELIVERY

9.1 Southwest shall receive Quantities of natural gas from Shipper at

the Point of Receipt and Southwest shall deliver Quantities of

natural gas to Shipper at the Point of Delivery. Southwest and

Shipper shall, by mutual agreement, establish the date of

commencement of receipt and redelivery of gas hereunder. Receipts

and redeliveries of gas hereunder shall be at uniform hourly and

daily rates of flow as nearly as practicable.

9.2 Measurement shall be both volumetric and thermal, at a temperature

of 60ø Fahrenheit and at a pressure of 14.73 psia, and on the

basis of the methods prescribed and published by the American Gas

Association in conjunction with the ANSI/API 2530 Report as now

and any subsequent amendments thereof accepted and agreed upon

between the parties if orifice meters are used, and in accordance

with generally accepted industry practices, as mutually agreed

upon, if positive or turbine meters are used.

The Btu content shall be determined by taking the arithmetic

average of the heating value as recorded by recording calorimeter

or other method of determination generally accepted in the

industry. Flowing temperature shall be determined by a recording

thermometer or EGM.

9.3 Shipper may witness Southwest's installation or maintenance of

measuring equipment. Southwest shall not be required to verify

accuracy more often than once during any thirty (30) day period.

If, upon test, accuracy is found to be within 2% by volume

(chromatograph/calorimeter within 0.5%), such equipment shall be

assumed to be accurate. Any error exceeding these percentages

will require correction to zero error of previous recordings back

to the date error began. If beginning date of error is unknown,

correction shall extend to one-half the time since the last test,

not to exceed sixteen (16) days.