Transwestern Pipeline Company, LLC

Third Revised Volume No. 1

Effective Date: 10/01/2006, Docket: RP06-574-000, Status: Effective

First Revised Sheet No. 5A.05 First Revised Sheet No. 5A.05 : Superseded

Superseding: Original Sheet No. 5A.05

CURRENTLY EFFECTIVE TRANSPORTATION RATES

INCREMENTAL SAN JUAN EXPANSION 2005

($/MMBTU)

MAXIMUM

FTS-4 MAXIMUM

RESERVATION FTS-4 MAXIMUM

CHARGE COMMODITY FUEL%

----------- ---------- ---------

(1)(3)(4) (2) (5)(7)

RECEIPT POINT AREA: SAN JUAN

DELIVERED TO THOREAU POINT:

BASE RATE $0.1746 $0.0010

APPLICABLE SURCHARGES (8) 0.0000 0.0000

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TOTAL RATE $0.1746 $0.0010 0.25%

DELIVERED TO EAST OF THOREAU: (a)

BASE RATE $0.2766 $0.0081

APPLICABLE SURCHARGES (8) 0.0000 0.0016

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TOTAL RATE $0.2766 $0.0097 1.56%

DELIVERED TO CALIFORNIA:

BASE RATE $0.4385 $0.0163

APPLICABLE SURCHARGES(8) 0.0000 0.0016

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TOTAL RATE $0.4385 $0.0179 4.75%

DELIVERED TO EAST OF CALIFORNIA: (b)

BASE RATE $0.4035 $0.0163

APPLICABLE SURCHARGES(8) 0.0000 0.0016

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TOTAL RATE $0.4035 $0.0179 4.75%

Footnotes

(a) These rates will be applicable to all delivery points east of Thoreau/San Juan Point.

(b) These rates will be applicable to all delivery points west of Thoreau/San Juan Point except

for Deliveries to California (including the current delivery points at Needles and Topock).

NOTE: All numeric Footnotes referenced on Sheet No. 5B of this Tariff.