Mississippi Canyon Gas Pipeline, LLC

First Revised Volume No. 1

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Effective Date: 08/21/1999, Docket: CP99-175-003, Status: Effective

First Revised Sheet No. 75 First Revised Sheet No. 75 : Effective

Superseding: Original Sheet No.75

GENERAL TERMS AND CONDITIONS (cont'd)

3. MEASUREMENT

3.1 Unit of Volume:

The unit of volume shall be a cubic foot.

3.2 Measurement of Volume:

(a) When gas is delivered at a pressure different from

14.73 pounds per square inch absolute, then for

the purpose of measurement hereunder, such volumes

of gas shall be corrected to a pressure of 14.73

pounds per square inch absolute. The measurement

of gas volumes shall be adjusted for deviation

from Boyle's Law in accordance with generally

accepted engineering practice. The factor used to

correct to the pressure base of 14.73 pounds per

square inch absolute shall be stated to at least

the sixth decimal place.

(b) Where orifice meters are used, volumes delivered

shall be computed in accordance with formulae,

tables and methods prescribed in Orifice Metering

of natural gas and other related hydrocarbons

fluids, AGA Report No. 3 - ANSI/API 2530, as

revised September 1985, and as such report may

hereafter be further revised (i.e. AGA Report No.

3, 1992 Edition and AGA Report No. 8). Exact

measurements of inside diameters of meter tubes

shall be obtained by means of micrometer to the

nearest one-thousandth inch. Said volumes shall

be corrected for flowing temperature and specific

gravity in accordance with the provisions of

paragraph (c) and (d) below.

Where ultrasonic meters are used, volumes

delivered shall be computed in accordance with

formulae, tables and methods prescribed in

Measurement of Gas by Multipath Ultrasonic Meters,

AGA Report No. 9, dated June 1998, and as such

report may hereafter be further revised. Said

volumes shall be corrected for flowing pressure

and temperature in accordance with the provisions

of paragraph (a) and (c)

(c) The flowing temperature of the gas shall be

determined for the purpose of measured volume

correction. Volume shall be corrected for each

degree of variation in the flowing temperature

from 60 degrees Fahrenheit. The flowing

temperature will be measured by the continuous use

of temperature transducers, and shall be either

(1) recorded using digital recorders, or other

mutually agreeable