Trunkline Gas Company

First Revised Volume No. 1

Effective Date: 11/01/2001, Docket: RP02- 6-000, Status: Effective

Twenty-Fifth Revised Sheet No. 10A Twenty-Fifth Revised Sheet No. 10A : Superseded

Superseding: Twenty-Fourth Revised Sheet No. 10A

CURRENTLY EFFECTIVE RATES

Each rate set forth in this Tariff is the currently effective rate pertaining to the particular rate

schedule to which it is referenced, but each such rate is separate and independent and the change in

any such rate shall not thereby effect a change in any other rate or rate schedule.

Base Adjustments Maximum Minimum

Rate ------------------------- Rate Rate Fuel

Per Dt Sec. 23 Sec. 24 Sec. 25 Per Dt Per Dt Reimbursement

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

(1) (2) (3) (4) (5) (6) (7)

RATE SCHEDULE QNIT

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

Field Zone to Zone 2

- Usage Rate (1)(2) $ 0.3676 $(0.0012) - $ 0.0092 $ 0.3756 $ 0.0141 3.37 % (3)

Zone 1A to Zone 2

- Usage Rate (1)(2) $ 0.2436 $(0.0012) - $ 0.0062 $ 0.2486 $ 0.0117 2.55 % (3)

Zone 1B to Zone 2

- Usage Rate (1)(2) $ 0.1903 $(0.0012) - $ 0.0062 $ 0.1953 $ 0.0062 1.60 % (3)

Zone 2 Only

- Usage Rate (1)(2) $ 0.1484 $(0.0012) - $ 0.0062 $ 0.1534 $ 0.0011 1.05 % (3)

Field Zone to Zone 1B

- Usage Rate (1)(2) $ 0.3264 $(0.0012) - $ 0.0092 $ 0.3344 $ 0.0130 3.06 % (3)

Zone 1A to Zone 1B

- Usage Rate (1)(2) $ 0.2024 $(0.0012) - $ 0.0062 $ 0.2074 $ 0.0106 2.24 % (3)

Zone 1B Only

- Usage Rate (1)(2) $ 0.1491 $(0.0012) - $ 0.0062 $ 0.1541 $ 0.0051 1.29 % (3)

Field Zone to Zone 1A

- Usage Rate (1)(2) $ 0.2845 $(0.0012) - $ 0.0092 $ 0.2925 $ 0.0079 2.51 % (3)

Zone 1A Only

- Usage Rate (1)(2) $ 0.1604 $(0.0012) - $ 0.0062 $ 0.1654 $ 0.0055 1.69 % (3)

Field Zone Only

- Usage Rate (1)(2) $ 0.1584 $(0.0012) - $ 0.0030 $ 0.1602 $ 0.0024 1.56 % (3)

Gathering Charge (All Zones)

- Usage Rate $ 0.0107 $ 0.0107

(1) Excludes Section 20 GRI Usage Surcharge: $0.0070

(2) Excludes Section 21 Annual Charge Adjustment: $0.0021

(3) Fuel reimbursement for backhauls is 0.46%