Centerpoint Energy - Mississippi River

Third Revised Volume No. 1

Effective Date: 01/21/2008, Docket: RP08-135-000, Status: Effective

Third Revised Sheet No. 88 Third Revised Sheet No. 88 : Effective

Superseding: Second Revised Sheet No. 88

GENERAL TERMS AND CONDITIONS

(Continued)

4. QUALITY (Continued)

(h) Hydrogen Sulphide. The gas shall not contain more than one-

quarter (1/4) grain of hydrogen sulphide per one hundred (100) cubic

feet.

(i) Total Sulphur. The gas shall not contain more than five (5)

grains of total sulphur per one hundred (100) cubic feet.

(j) Heating Value. The gas shall have a gross heating value of

not less than nine hundred fifty (950) and not greater than eleven

hundred (1,100) Btu per cubic foot of gas.

(k) Temperature. The gas shall not be delivered or redelivered

at a temperature of less than forty degrees Fahrenheit (40°F) nor in

excess of one hundred twenty degrees Fahrenheit (120oF).

(l) Hydrocarbon Dew Point. The gas shall not have a hydrocarbon

dew point (HDP) in excess of twenty degree Fahrenheit. The HDP 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 at any

operating pressure, as determined by a chromatographic analysis using

standard equipment performed in accordance with standard industry

practices and procedures.

4.3 Hazardous Substances. The gas received or delivered under the

terms of the Service Agreement shall contain no "hazardous substance" as that

term is defined in Section 101(14) of the Comprehensive Environmental

Response, Compensation, and Liability Act, as amended, 42 U.S.C. §9601(14),

except as otherwise permitted by the terms of this tariff or Customer's

Service Agreement.

4.4 Commingling. MRT shall have the unqualified right to commingle

Gas received for service hereunder with Gas from other sources. Accordingly,

Gas received by MRT shall be subject to such changes as may result from such

commingling and MRT shall, notwithstanding any other provisions herein, be

under no obligation to deliver for Customer's account Gas identical to that

received by MRT. Subject to other terms and provisions of this Tariff, MRT

will transport and tender for delivery for the account of Customer such

thermally equivalent quantities of Gas, less Fuel Use and LUFG retained, as it

receives for such Customer's account.

4.5 If the gas offered for delivery to MRT by Customer shall fail

at any time to conform to any of the specifications set forth herein, then MRT

thereupon may, at its option, refuse to accept delivery of such gas. If MRT

does accept delivery of such gas, Customer shall be liable for all damages and

additional expenses caused by such nonconforming gas.