Iroquois Gas Transmission System, L.P.

FIRST REVISED VOLUME NO. 1

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Effective Date: 11/01/2009, Docket: RP09-1079-000, Status: Effective

TWENTY-FOURTH REVISED SHEET NO. 4A TWENTY-FOURTH REVISED SHEET NO. 4A

Superseding: TWENTY-THIRD REVISED SHEET NO. 4A

To the extent applicable, the following adjustments apply:

ACA ADJUSTMENT:

Commodity 0.0019

DEFERRED ASSET SURCHARGE:

Commodity

Zone 1 0.0003

Zone 2 0.0002

Inter-Zone 0.0005

MEASUREMENT VARIANCE/FUEL USE FACTOR:

Minimum 0.00%

Maximum (Non-Eastchester Shipper) 1.00%

Maximum (Eastchester Shipper) 4.50%

Maximum (Brookfield Shipper) 1.20%