Valero Interstate Transmission Company

First Revised Volume No. 2

Effective Date: 11/01/1991, Docket: GT91- 42-000, Status: Effective

Original Sheet No. 32 Original Sheet No. 32 : Superseded

ARTICLE VI

MEASUREMENT

1. Except for the determination of heating value, the unit of volume

for all measurement of gas delivered hereunder shall be one (1) cubic foot

of gas at a base temperature of sixty (60) degrees Fahrenheit and at an

absolute pressure of fourteen and sixty-five hundredths (14.65) pounds per

square inch. Except as provided by law, all fundamental constants,

observations, records and procedures involved in determining and/or

verifying the quantity and other characteristics of gas delivered hereunder

shall, unless otherwise specified herein, be in accordance with the

standards prescribed in ANSI/API 2530 of the American National Standards

Institute as now and from time to time amended or supplemented. All

measurements of gas shall be determined by calculation into terms of such

unit. All quantities given herein, unless otherwise expressly stated, are

in terms of such unit.

2. Interstate shall own, install, maintain and operate, all measurement

facilities or cause same to be owned, installed, maintained and operated,

at the Point of Delivery, or at such other point as may be agreed upon by

the Parties. Said facilities shall be so equipped with orifice meters,

recording gauges, or other types of meter or meters of standard make and

design, commonly acceptable in the industry, as to accomplish the accurate

measurement of gas delivered hereunder. The changing of charts and the

calibrating and adjusting of meters shall be done or caused to be done by

Interstate.

3. Buyer may, at its option, install check meters for checking

Interstate's measurement, and same shall be so installed as not to

interfere with the operation of Interstate's facilities.

4. The temperature of the gas flowing through the meter or meters shall

be determined by the continuous use of a recording thermometer installed by

Interstate, so that it will properly record the temperature of the gas

flowing through the meter or meters. The arithmetical average of the

hourly temperatures recorded each day shall be used in computing

measurements for that day.

5. The specific gravity of the gas flowing through the meter or meters

shall be determined by means of a mechanical balance, or other accepted

method, at monthly intervals. Specific gravities so determined will be

used in calculating gas deliveries for the first day of the month in which

the test is made, and for all following days until the next specific

gravity test is made.