Centerpoint Energy Gas Transmission Company

Sixth Revised Volume No. 1

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Effective Date: 02/28/2003, Docket: RP03-239-000, Status: Effective

Original Sheet No. 342 Original Sheet No. 342 : Effective

GENERAL TERMS AND CONDITIONS

(continued)

4. QUALITY (continued)

(d) shall not have a temperature of less than forty degrees

Fahrenheit nor more than one hundred twenty degrees

Fahrenheit;

(e) shall not contain an amount of water vapor exceeding seven

(7) pounds of water per MMcf measured at a pressure base of

14.73 psia and at a temperature of sixty degrees Fahrenheit;

(f) shall not contain in excess of two-tenths of one percent

(0.2 of 1%) by volume of oxygen;

(g) shall not contain more than two percent (2%) by volume of

carbon dioxide;

(h) shall not contain in excess of three percent (3%) by volume

of nitrogen;

(i) shall not have a hydrocarbon dew point in excess of twenty

degrees Fahrenheit at 800 psig. This dew point can usually

be obtained when the pentanes and heavier content (C5+) of

the gas is not in excess of two-tenths (0.2) gallons per Mcf

as determined by a chromatographic analysis using standard

equipment performed in accordance with standard industry

practices and procedures.

4.4 Deleterious Substances. The Gas tendered for transportation

hereunder shall not contain any toxic, hazardous or deleterious

materials or substances, or any materials potentially harmful to

persons or the environment, including, but not limited to,

polychlorinated biphenyls and substances requiring investigation,

remediation or removal under any law, regulation, rule or order in

effect from time to time.

4.5 Commingling. Transporter shall have the unqualified right to

commingle Gas received for service hereunder with Gas from other

sources. Accordingly, Gas received by Transporter shall be

subject to such changes as may result from such commingling and

Transporter shall, notwithstanding any other provisions herein,

be under no obligation to deliver for Shipper's account Gas

identical to that received by Transporter. Subject to other

terms and