West Texas Gas, Inc.

First Revised Volume No. 1

Effective Date: 05/01/1998, Docket: RP98- 25-005, Status: Effective

First Revised Sheet No. 10 First Revised Sheet No. 10 : Effective

Superseding: Original Sheet No. 10

GENERAL TERMS AND CONDITIONS

1. Definitions:

1.1 Day: The term "Day" shall mean a period of 24 consecutive

hours beginning at 12:01 a.m. Mountain Standard Time.

1.2 Month: The term "Month" shall mean a period beginning at

12:01 a.m. Mountain Standard Time on the first day of a

calendar month and extending to 12:01 a.m. Mountain Standard

Time on the first day of the succeeding calendar month.

1.3 Heat Content: The term "Heat Content" shall mean the

number of British Thermal Units produced by the combustion in

a calorimeter at constant pressure, of the amount of gas which

would occupy one cubic foot at an absolute pressure of 14.65

pounds per square inch and 60 degrees Fahrenheit, on a water-

free basis, with air of the same temperature and pressure as

the gas, when the products of combustion are cooled to the

initial temperature of the gas and air and when the water

formed by combustion is condensed to the liquid state.

1.4 Maximum Daily Obligation: The term "Maximum Daily

Obligation" shall mean the maximum quantity of natural gas

Seller is obliged to deliver on a firm basis to Buyer and

Buyer is entitled to receive on a firm basis from Seller on

any day.

1.5 Dekatherm: The term "dekatherm" (dth) shall mean the quantity

of heat energy which is equivalent to 1,000,000 Btu. One dekatherm

of gas shall mean the quantity of gas which contains one dekatherm

of energy.

1.6 British Thermal Unit: The term "British Thermal Unit" (Btu)

shall mean the amount of heat required to raise the temperature of

one pound of water from 59 to 60 degrees Farenheit at a constant

pressure of 14.65 pounds per square inch absolute.

2. Quality:

2.1 General: The gas delivered to Buyer by Seller shall be

commercial in quality and condition. It shall not contain

more than one grain of hydrogen sulphide nor more than 20

grains of total sulphur per 100 cubic feet, and not more than

7 pounds of water per million cubic feet at the pressure and

temperature bases provided in Section 3 below.