Texas Gas Pipe Line Corporation

Third Revised Volume No. 1

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Effective Date: 06/01/1990, Docket: RP90-112-001, Status: Effective

Substitute Original Sheet No. 10 Substitute Original Sheet No. 10 : Effective

Superseding: Original Sheet No. 10

GENERAL TERMS AND CONDITIONS (Cont'd)

2. MEASUREMENTS (Cont'd)

2.5 Deviations from Boyle's Law. The deviations of the gas from

Boyle's Law at the pressure and temperatures under which the

gas is delivered to Buyer shall be determined by joint tests

to be made at or about the date of first delivery, and

thereafter whenever changes in producing conditions at

contract requirements may require. The apparatus and the

methods to be used in making such tests shall follow the

practices established and published under the title "1947

Proceedings of the Southwestern Natural Gas Measurement

Short Course" by the University of Oklahoma, or by such

other methods as may be mutually agreed upon by Seller and

Buyer. Each test shall determine the corrections to be used

in computations for the measurement of gas delivered by

Seller to Buyer until the next test; however, if the result

of such test varies not more than five-tenths of one

percent from the tables of American Gas Measurement

Committee Report No. 3, then these tables will be used to

compute the daily volumes delivered.

2.6 Heating Value. The heating value per cubic foot of the gas

shall be determined for gas at a temperature of 60 degrees

Fahrenheit, saturated with water vapor and at an absolute

pressure equivalent to 30 inches of mercury at 32 degrees

Fahrenheit. The heating value shall be determined from time

to time as deemed necessary in practice by the arithmetical

average of the records of a recording calorimeter of an

approved type, or by such other methods as may be mutually

agreed upon by Seller and Buyer.

3. MEASURING EQUIPMENT

3.1 Installation and Operation. Rate Schedule G-2:

Buyer shall install, maintain and operate at or near the

point of delivery orifice meters and other auxiliary

measuring equipment necessary in Buyer's judgment, to

accomplish accurate measurement of the gas to be delivered

by Seller to Buyer.

Rate Schedule G-1: Seller shall install, maintain and

operate at or near the point of delivery, orifice meters and

other auxiliary measuring equipment necessary in Seller's

judgment, to accomplish accurate measurement of the gas to

be delivered by Seller to Buyer.

The measuring equipment so installed under Rate Schedule G-1

and Rate Schedule G-2 shall be installed and operated in

accordance with American Gas Association Gas Measurement

Committee Report No. 3 in its entirety, and as amended from

time to time, or by any other method, commonly used in the

industry and mutually acceptable.

3.2 Check Measuring Equipment. Either party may, at its option,

install and operate check measuring equipment to check the

accuracy of the other party's measurements; such equipment

to be of the same or similar type and to be installed and

operated so that it will not interfere with the operation of

the other party's facilities