Richfield Gas Storage System

Substitute Volume No. 1

Effective Date: 11/01/1997, Docket: RP97-150-008, Status: Effective

Original Sheet No. 37B Original Sheet No. 37B : Superseded

5.4 Customer shall pay to Richfield the amount shown as due

by such billing on or before the twenty-fourth (24th) day

of each month in immediately available U.S. funds at a

depository designated by Richfield. When the due date

falls on a day that the designated depository is not open

in the normal course of business to receive the

Customer's payment, the Customer shall cause such payment

to be made on or before the first business day on which

the designated depository is open after such due date.

If an error is discovered in any billing, such error

shall be adjusted within thirty (30) days of the

determination thereof, such determination subject to the

following: (a) measurement data corrections shall be

processed within 6 months of the production month with a

3 month rebuttal period; (b) the time limitation for

disputes of allocations should be 6 months from the date

of the initial month-end allocation with a 3-month

rebuttal period; and (c) prior period adjustment time

limits should be 6 months from the date of the initial

transportation invoice and 7 months from date of initial

sales invoice with a 3-month rebuttal period, excluding

government-required rate changes. This standard shall

not apply in the case of deliberate omission or

misrepresentation or mutual mistake of fact. Parties'

other statutory or contractual rights shall not otherwise

be diminished by this standard.

5.5 Should Customer fail to pay part or all of the amount of

any billing for services rendered or for any other

charges hereunder, interest thereon shall accrue at the

then effective Refund Interest Rate pursuant to the

FERC's Regulations, from the due date until date of

payment. If