Reliant Energy Gas Transmission Company

Fifth Revised Volume No. 1

Effective Date: 05/01/2001, Docket: RP01-317-000, Status: Effective

Original Sheet No. 218 Original Sheet No. 218 : Effective

RATE SCHEDULE PHS

PERRYVILLE HUB SERVICE

(continued)

5. MONTHLY BILL:

5.1 Calculation: The bill for a Service Month shall be

the sum of:

(a) the product of the Wheeling Rate and the total Dth

of Gas delivered under wheeling transactions

during the Service Month, whether authorized or

unauthorized; and

(b) charges for any park and loan service received

during the Service Month, which charges shall be

the sum of:

(i) for each account, the product of the Activity

Rate and the total Dth of Gas initially loaned

or parked, and/or returned or taken delivery of,

on each Day, plus

(ii) the product of the Inventory Rate and the total Dth

of parked or loaned Gas in each account at the end

of each Day excluding the quantities subject to the

Activity Rate on such Day, on a first-in, first-out

basis (for parking) and a first-out, first-in basis

(for loaning).

5.2 Adjustments.

(a) Excess Contract Quantities: Excess Contract

Quantities under Rate Schedule PHS are those

quantities that (i) exceed, during any given

period, one hundred two percent (102%) of the

quantity authorized by Transporter for such period

(including, in the event of curtailment or when

Transporter has invoked the provisions of Section

20 of the General Terms and Conditions, quantities

that exceed one hundred two percent (102%) of the

total quantity which Shipper is authorized to

transport under such conditions); and (ii) are

unauthorized. Excess Contract Quantities under

Rate Schedule PHS are categorized by percentage of

Shipper's scheduled quantities or other authorized

amount, as follows:

greater than 102% but less than or equal to 105%;

greater than 105% but less than or equal to 110%;

and greater than 110%.