Iroquois Gas Transmission System, L.P.

FIRST REVISED VOLUME NO. 1

Effective Date: 03/09/2006, Docket: RP06-216-001, Status: Effective

Fourth Revised Sheet No. 4B Fourth Revised Sheet No. 4B : Effective

Superseding: Third Sheet No.4B

Third Revised Sheet No. 4B

EXTENDED RECEIPT AND EXTENDED DELIVERY RATES (All in $ Per Dth)

Applicable to Non-Eastchester/Non-Contesting Shippers 1/

------------------- Maximum Rates -----------------------

Effective Effective Effective Effective Effective

Minimum 1/1/2003 7/1/2004 1/1/2005 1/1/2006 1/1/2007

ER/ED COMMODITY:

Zone 1 $0.0054 $0.2098 $0.1935 $0.1906 $0.1886 $0.1837

Zone 2 $0.0054 $0.1747 $0.1612 $0.1588 $0.1572 $0.1531

Zone 2 (MFV) $0.0324 $0.3223 $0.2968 $0.2922 $0.2892 $0.2815

______________

1/ Extended Receipt ("ER") and Extended Delivery ("ED") rates are

derived from the Settlement Recourse Rates shown on Sheet No. 4,

using the methodology approved by the Commission for ER/ED rates in

Docket No. RP03-258. The Non-Eastchester/Non-Contesting Shippers to

which ER/ED rates apply are defined in Iroquois' August 29, 2003

Settlement approved by the Commission's October 24, 2003 order in

Docket No. RP03-589. ER/ED rates apply to transactions utilizing a zone

other than the zone/Lateral for which service was contracted in

Shipper's RTS contract pursuant to Sections 7.1.1 and 7.3.1 of

Transporter's General Terms and Conditions and are in addition to

rates otherwise applicable under such contract.