Columbia Gas Transmission LLC

Third Revised Volume No. 1

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Effective Date: 03/03/2009, Docket: RP09-340-000, Status: Effective

Original Sheet No. 115 Original Sheet No. 115

OPT RATE SCHEDULE

OFF-PEAK FIRM TRANSPORTATION SERVICE

1. AVAILABILITY

Service under this Rate Schedule is available from Columbia Gas Transmission, LLC (Transporter) to any

Shipper, provided that (i) Transporter has sufficient facilities and transportation capacity available to

receive gas from or on behalf of Shipper and deliver gas to or for Shipper, (ii) Transporter has awarded

capacity to Shipper under the provisions of Section 4 (Auctions of Available Firm Service) of the General

Terms and Conditions or through construction of facilities, (iii) Shipper has executed an OPT Service

Agreement with Transporter; and (iv) Shipper complies with the provisions of this Rate Schedule and with all

other applicable provisions of this Tariff.

2. APPLICABILITY AND CHARACTER OF SERVICE

(a) Service provided under this Rate Schedule shall be performed under Subpart B or G of Part 284

of the Commission's Regulations. Subject to the limitations set forth below, Transporter shall receive

scheduled quantities from or on behalf of Shipper and shall deliver thermally equivalent scheduled quantities,

less Retainage, to or for Shipper. Such service shall be made available on a firm basis, subject to the

limitations set forth in this Rate Schedule, and shall apply to all gas transported by Transporter for Shipper

under this Rate Schedule, up to the Transportation Demand set forth in Shipper's OPT Service Agreement.

(b) Service provided under this Rate Schedule (i) shall have the priority specified in this Rate

Schedule and in Section 7 (Capacity Allocation) of the General Terms and Conditions, and (ii) shall be subject

to interruption to the extent provided in this Rate Schedule, in Shipper's OPT Service Agreement, and in

Section 16 (Interruptions of Service) of the General Terms and Conditions, and (iii) shall be subject to

operational flow orders to the extent provided in this Rate Schedule or in Section 17 (Operational Flow

Orders) of the General Terms and Conditions.

(c) Service provided under this Rate Schedule may at Transporter's reasonable discretion be

interrupted, consecutively or nonconsecutively, for a maximum term of up to either 30 or 60 days between

November 1 of any year and the next succeeding March 31. Such interruption term shall be stated in Shipper's

OPT Service Agreement. Transporter may extend the number of days of interruption, if necessary, as provided

in Section 3 of this Rate Schedule.

(d) Service under this Rate Schedule shall be available for an initial minimum term of one year,

and thereafter for succeeding one year increments.

(e) Transporter and Shipper may mutually agree on a not unduly discriminatory basis to (i)

different termination dates for specified volumes of Transportation Demand within the same Service Agreement

and/or (ii) combine Service Agreements under this Rate Schedule into a single Service Agreement under this

Rate Schedule with different termination dates for specified volumes of Transportation Demand. Transporter

and Shipper may mutually agree to combine Service Agreements only to the extent that the individual Service

Agreement's rates, terms, and conditions can be distinctly maintained and will not be altered by the

combination. For each Service Agreement(s) executed in accordance with this Section 2(e), each of the varying

termination dates and associated volumes of Transportation Demand will be set forth on a separate Appendix A

to the Service Agreement applicable to service pursuant to this Rate Schedule. Each component with a

different termination date for a specified volume of Transportation Demand within the same Service Agreement

and reflected in a separate Appendix A will be regarded as a single Service Agreement for purposes of

Shipper's exercise of any right of first refusal under the provisions of Section 4 of the General Terms and

Conditions of Transporter's Tariff. In the event of a constraint or other occurrence that precludes combined

nominations or allocations, Transporter may advise Shippers under such combined Service Agreements that

capacity must be nominated separately, and is subject to separate allocation, pursuant to the terms of each

separate Appendix A of the Service Agreement. Each Appendix A of the combined Service Agreements will be

identified by its original contract number or such other identification convention determined to be applicable

by Transporter.