Mississippi Canyon Gas Pipeline, LLC

First Revised Volume No. 1

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Effective Date: 05/10/2005, Docket: RP05-335-000, Status: Effective

Original Sheet No. 272 Original Sheet No. 272 : Effective

IT-1 TRANSPORTATION SERVICE AGREEMENT (continued)

EXHIBIT B (con't)

____ Discounted Transportation Rate applicable in a

specified relationship to quantities actually

transported:

Adjustment in Transportation

Rate:____________ (based on ___________ Mcf

actually transported)

____ Discounted Transportation Rate applicable to

specified quantities during specified periods of

time or during specified periods of the year:

______________ Mcf for the following time

period(s): ______________

__ Discounted Transportation Rate applicable to

specified quantities at specific Receipt Point(s)

or Delivery Point(s):

Receipt Point(s):__________________

Delivery Point(s):________________

____ Discounted Transportation Rate applicable to

production reserves committed or dedicated by

Shipper:

Production Reserves:_______________ [Field or

Block]

____ Discounted Transportation Rate based on published

index prices for specific Receipt Point(s) and/or

Delivery Point(s) or other agreed-upon published

pricing reference points (based upon the

differential between published prices or arrived

at by formula):

Index Price(s): ______________________

______________________

_____ Differential between Index Prices

or

_____ Formula:________________________