Reliant Energy Gas Transmission Company

Fourth Revised Volume No. 1

Effective Date: 05/01/1999, Docket: TM99-3-31-001, Status: Effective

Substitute Sixteenth Revised Sheet No. 6 Substitute Sixteenth Revised Sheet No. 6 : Effective

Superseding: Fifteenth Revised Sheet No. 6

STATEMENT OF EFFECTIVE RATES AND CHARGES FOR TRANSPORTATION OF GAS

($/Dth)

Adjustments

BASE Sec. Sec. Sec. Sec. Sec. MAXIMUM MINIMUM

RATE SCHEDULE RATE 5.7 18 23 23.2 28.4 RATE RATE FUEL%

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

NNTS - NO NOTICE TRANSPORTATION

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

RESERVATION FEE $8.7560 (0.0000) ----- (0.0000) 0.0000 ----- $8.7560 $0.0000

COMMODITY 0.0184 ----- 0.0300 ----- ----- 0.0011 0.0495 0.0195 4.08%

NNTS - SMALL CUSTOMER

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

COMMODITY $0.3972 (0.0000) 0.0300 (0.0000) 0.0000 0.0011 $0.4283 $0.0195 4.08%

FSS - FIRM STORAGE SERVICE

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

DELIVERABILITY FEE $0.9606 ----- ----- ----- ----- ----- $0.9606 $0.0000

CAPACITY FEE 0.0229 ----- ----- ----- ----- ----- 0.0229 0.0000

STORAGE FEE 0.0154 ----- ----- ----- ----- ----- 0.0154 0.0154 1.39%

OVERRUN 0.5468 ----- ----- ----- ----- ----- 0.5468 0.0154

DELIVERABILITY FEE ADJ 0.2562 ----- ----- ----- ----- ----- 0.2562 0.0000

ISS - INTERRUPTIBLE STORAGE SERVICE

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INTERRUPTIBLE STORAGE RATE $0.5468 ----- ----- ----- ----- ----- $0.5468 $0.0154 1.39%

OVERRUN 0.5468 ----- ----- ----- ----- ----- 0.5468 0.0154

CAPACITY RELEASE VOLUMETRIC RATE:

The maximum volumetric bid rate for capacity release is the maximum applicable overrun rate for Rate

Schedules NNTS and FSS respectively.

FUEL RATES:

Transporter shall retain Compressor Fuel equal to the product of the applicable Compressor Fuel

percentage and the quantity received by Transporter. The fuel rates stated above are calculated

pursuant to Section 27 of the General Terms and Conditions.