Dominion Transmission, Inc.

Third Revised Volume No. 1

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Effective Date: 09/23/2000, Docket: RP00-555-000, Status: Effective

Original Sheet No. 631 Original Sheet No. 631 : Effective

MPS RATE SCHEDULE

Mainline Pooling Service

4. RATES AND MONTHLY BILL

4.1 For service under this Rate Schedule, Customer shall pay

Pipeline monthly the following:

A. An Imbalance Fee. A charge per Dt per Day, equivalent

to Pipeline's then-effective maximum rate applicable

to Parking Service under Rate Schedule MCS as set

forth on Sheet No. 31 of this Tariff. This fee shall

be applied to all Scheduled Quantities on each Day

during the billing month which, despite Customer's

obligation to balance Scheduled Quantities in

accordance with Section 6.2, below, fail to be

delivered both into and away from an Eligible Point on

the same Day. Provided, however, that such imbalance

fee shall only apply to the extent that such imbalance

quantities are not immediately attributed to a Subject

Service Agreement as provided in Section 6.3, below.

B. Applicable penalties as described in Section 6.5 of

this Rate Schedule; and

C. All other applicable rates, charges, and penalties as

set forth in the General Terms and Conditions of

Pipeline's Tariff.

4.2 Pipeline may elect to offer to provide service at a rate

that is below the maximum but no less than the minimum

rates applicable to this Rate Schedule. However, Pipeline

is not obligated to offer to provide service at any rates

less than the maximum rates.

5. ELIGIBLE POINTS

Each Aggregation Agreement shall specify Eligible Points,

which shall be the logical or accounting locations at which

Pipeline will permit Customer to aggregate quantities of natural

gas, subject to