Dominion Transmission, Inc.

Third Revised Volume No. 1

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

Original Sheet No. 500 Original Sheet No. 500 : Effective

ISS RATE SCHEDULE

Interruptible Storage Service

1. AVAILABILITY

1.1 This Rate Schedule is available to any person ("Customer")

for the purchase of interruptible natural gas storage

service provided by Dominion Transmission , Inc.

("Pipeline")under Part 284 of the Commission's

Regulations.

1.2 Service under this Rate Schedule will be made available in

accordance with the scheduling provisions of Section 11A.4

of the General Terms and Conditions of this Tariff, to any

Customer willing and able to pay maximum rates hereunder,

or such other rate mutually agreed upon by Pipeline and

Customer, subject to all applicable provisions of the

General Terms and Conditions of this Tariff, where:

A. Customer has submitted to Pipeline a valid request for

service in accordance with Section 11A of the General

Terms and Conditions; and

B. Pipeline and Customer have entered into a Service

Agreement that conforms to the form of Service

Agreement for Rate Schedule ISS contained in this

Tariff ("the ISS Service Agreement"), in which

Pipeline agrees to receive and redeliver stated

quantities of gas to Customer at a specified point.

1.3 All necessary transportation services to and from the

applicable ISS Point will be the sole responsibility of

Customer. Customer shall be responsible for making

arrangements for such transportation, whether with Pipeline

or with interconnecting parties. Such transportation shall

be for at least the full term of the ISS Service Agreement

and shall be sufficient to transport on any Day the Maximum

Daily Withdrawal Quantity from the applicable ISS Point.

Scheduling of requested services hereunder shall be subject

to confirmation of the required scheduled transportation

service.

1.4 Service under this Rate Schedule will be made available on

an interruptible basis from time to time only when, in

Pipeline's judgment, it has the necessary capability for

injection, storage, and withdrawal of gas in order to

render such service. Pipeline is not required to provide

any requested service hereunder for or during any Day, for

which