Iroquois Gas Transmission System, L.P.

FIRST REVISED VOLUME NO. 1

Effective Date: 01/01/1996, Docket: RP96- 63-000, Status: Effective

Second Revised Sheet No. 90 Second Revised Sheet No. 90 : Effective

Superseding: First Revised Sheet No. 90

23. MODIFICATION

No modification of the terms and provisions of a Gas

Transportation Contract or Park and Loan Service Contract

shall be made except by the execution of written contracts

signed by Transporter and Shipper.

24. NONWAIVER AND FUTURE DEFAULT

No waiver by either Transporter or Shipper of any one

or more defaults by the other in the performance of any

provisions of a Gas Transportation Contract, Park and Loan

Service Contract, the General Terms and Conditions or the

applicable Rate Schedule shall operate or be construed as a

waiver of any future default or defaults, whether of a like

or of a different character. This provision shall not be

interpreted as providing Transporter or Shipper with any

powers or authorizations to grant or deny waivers over and

above such powers as provided under the Commission's

regulations and standard contract law.

25. SCHEDULES AND CONTRACT SUBJECT TO REGULATION

This Tariff, including these General Terms and

Conditions and the respective obligations of the parties

under the Gas Transportation Contract(s) and/or Park and

Loan Service Contract are subject to valid laws, orders,

rules and regulations of duly constituted authorities

having jurisdiction and are subject to change from time

to time by addition, amendment or substitution as provided

by law.