Great Lakes Gas Transmission Limited Partner

Second Revised Volume No. 1

Effective Date: 04/27/2001, Docket: RP01-272-000, Status: Effective

Fourth Revised Sheet No. 59 Fourth Revised Sheet No. 59 : Effective

Superseding: Third Revised Sheet No. 59

RATE SCHEDULE IT

INTERRUPTIBLE TRANSPORTATION SERVICE

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(continued)

4. RATES AND CHARGES

After commencement of service, the amounts due each Month that shall be paid by Shipper to

Transporter for service hereunder shall equal the sum of the amounts due under the subsections

of this Section 4, computed using the applicable rates set forth on Sheet No. 5 to this FERC Gas

Tariff, Second Revised Volume No. 1, that are effective during the Month or portion thereof.

4.1 Interruptible Service Charge

A utilization fee shall be paid for each Dth of gas received from or on behalf of Shipper up to

Shipper's MDQ at the point(s) of delivery during the Month pursuant to the Agreement. The

appropriate utilization fee for receipt and redelivery in each zone is stated on Sheet No. 5 to

this FERC Gas Tariff, Second Revised Volume No. 1.

4.2 Maximum/Minimum Rates

Subject to any limitations imposed by additional service Agreement provisions agreed to by

Shipper and Transporter, Transporter may from time to time selectively adjust any or all of the

rates charged to any individual Shipper for which a maximum rate and minimum rate are stated on

Sheet No. 5 to this FERC Gas Tariff, Second Revised Volume No. 1. Except as permitted by

Section 4.5, Negotiated Rates, the adjusted rate(s) shall not exceed the applicable maximum

rate(s), nor shall they be less than the minimum rate(s), set forth on such sheet. Transporter

shall have the right to charge the maximum rate at any time as a condition for new service or

for continuation of service under an existing Agreement, unless otherwise provided by the

Agreement. Transporter shall make all information filings required by the Commission's

regulations with respect to any Transportation charges at less than the maximum rate. Whenever

Transporter adjusts the rate to be charged to a Shipper pursuant to this section 4.2, notice

thereof shall be given to Shipper not less than 48 hours prior to the effective date of such

adjustment.