Mid Louisiana Gas Company

First Revised Volume No. 2

Effective Date: 08/09/1974, Docket: GT90- 37-000, Status: Effective

Original Sheet No. 67 Original Sheet No. 67 : Effective

RATE SCHEDULE X-7

EXCHANGE OF NATURAL GAS

TRANSCONTINENTAL GAS PIPE LINE CORPORATION

November 9, 1973

Transcontinental Gas Pipe Line Corporation

P.O. Box 1396

Houston, Texas 77001

Gentlemen:

Mid Louisiana has asked for Transco's assistance in taking into its

system natural gas available to Mid Louisiana in the Lafourche Crossing

Field, Lafourche Parish, Louisiana. You have agreed to provide such

assistance on the following terms and conditions:

Mid Louisiana will deliver or cause to be delivered to Transco at a

mutually agreeable point in the Lafourche Crossing Field, Lafourche Parish,

Louisiana up to 1,500 MCF per day. Transco will return substantially

contemporaneously therewith, equivalent volumes of gas at any mutually

agreeable authorized exchange point between the two companies. The exchange

natural gas delivered by either party will be pipeline quality gas and be at

the pressure existing in the line of the party making delivery. Mid Louisiana

or its representative will be responsible for measurement at the Lafourche

Crossing point of delivery.

All gas delivered under terms of this agreement shall be measured at a

base pressure of 14.73 pounds per square inch and at a base temperature of

sixty (60) degrees Fahrenheit, using an orifice meter installed and operated

according to A.G.A. Gas Measurement Report No. 3. The volume of gas delivered

shall be computed in accordance with provisions of A.G.A. Gas Measurement

Committee Report No. 3, as amended from time to time.

In the computation of gas volumes, the average atmospheric pressure

shall be assumed to be 14.7 pounds per square inch, and adjustments for the

flowing temperature shall be applied for each 24-hour period of gas delivery,

such flowing temperature to be obtained from a recording thermometer

installed in