Texas Eastern Transmission, L P

Seventh Revised Volume No. 1

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Effective Date: 12/13/2006, Docket: RP07- 67-000, Status: Effective

Second Revised Sheet No. 505 Second Revised Sheet No. 505 : Effective

Superseding: First Revised Sheet No. 505

GENERAL TERMS AND CONDITIONS

(Continued)

1. Definitions (continued)

The term "Operational Impact Area" shall describe a Transportation

Service Provider's designation of the largest possible area(s) on its

system in which imbalances have a similar operational effect.

Pipeline's system is divided into the following Operational Impact

Areas:

(1) STX Operational Impact Area:

The geographic area upstream of the suction side of Huntsville,

Texas, and upstream of the suction side of Vidor, Texas;

(2) ETX Operational Impact Area:

The geographic area downstream of the suction side of

Huntsville, Texas, to the suction side of Little Rock, Arkansas;

(3) WLA Operational Impact Area:

The geographic area downstream of the suction side of Vidor,

Texas, to the suction side of Opelousas, Louisiana;

(4) ELA Operational Impact Area:

The geographic area downstream of the suction side of Opelousas,

Louisiana, to the suction side of Kosciusko, Mississippi;

(5) Market Zone 1 - 24" Operational Impact Area:

The geographic area downstream of the suction side of Little

Rock, Arkansas, to the Illinois-Indiana state line;

(6) Market Zone 1 - 30" Operational Impact Area:

The geographic area downstream of the suction side of Kosciusko,

Mississippi, to the Tennessee-Kentucky state line;

(7) Market Zone 2 - 24" Operational Impact Area:

The geographic area from the Illinois-Indiana state line to the

suction side of Berne Station;

(8) Market Zone 2 - 30" Operational Impact Area:

The geographic area from the Tennessee-Kentucky state line to

the suction side of Delmont Station and to the discharge side of

Station Site No. 22;

(9) Market Zone 3 Operational Impact Area:

The geographic area downstream of the suction side of the

Delmont Station and downstream of the discharge side of Station

Site No. 22.