Iroquois Gas Transmission System, L.P.

FIRST REVISED VOLUME NO. 1

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Effective Date: 10/17/2006, Docket: RP06-177-002, Status: Effective

1st Alt Sub Second Revised Sheet No. 60E 1st Alt Sub Second Revised Sheet No. 60E : Effective

Superseding: Alt Sub Second Revised Sheet No. 60E

5. CURTAILMENT

In the event that force majeure or other unforeseen

circumstances require Transporter to curtail previously

scheduled service through any pipeline segment, such

curtailment shall be undertaken as follows:

(a) First, Transporter shall curtail

service to those Shippers receiving park and loan service

under the PAL Rate Schedule or point operators receiving

service under OBAs which have requested more than 250 Dth

on a day. Such services shall be divided into two

categories: those which increase linepack and those which

decrease linepack. Within each category, to the extent

necessary, Transporter will curtail service to those

Customers whose nominations and requests adversely impact

The operations of Transporter's system in the reverse order

in which such nominations and requests were received;

provided, however, that the last 25 MDT of linepack

flexibility available for park and loan service will be

reserved for unscheduled requests by point operators that

receive service under OBAs.

(b) Second, Transporter shall curtail

service to those Shippers receiving Service under the

ITS/HUB Rate Schedule(s) where such service adversely

impacts the operations of Transporter's system.

Transporter shall curtail service to those Shippers

receiving loan payback service under the HUB Rate Schedule

in the reverse order in which such nominations and requests

were received.

Transporter shall curtail service to those Shippers

receiving interruptible or hub transportation service and

paying the lowest percentage of the applicable maximum

commodity rate for the service being provided. Shippers

that are paying the same percentage of the applicable

maximum commodity rate(s) for such service shall be

curtailed on a pro-rata basis.

In applying such criteria where a Negotiated Rate or

Negotiated Rate Formula is involved, the value assigned to

a request which includes a Negotiated Rate or Negotiated

Rate Formula shall be determined in accordance with Section

32 of these General Terms and Conditions and shall in no

event exceed the Recourse Rate. Shippers that are paying

the same percentage of the applicable maximum commodity

rate(s) for such service shall be curtailed on a pro-rata

basis.