Williams Natural Gas Company

Second Revised Volume No. 1

Effective Date: 10/01/1993, Docket: RS92- 12-003, Status: Effective

Original Sheet No. 273 Original Sheet No. 273 : Superseded

GENERAL TERMS AND CONDITIONS

18. BILLING AND PAYMENTS

For gas received or delivered by WNG, the billing period shall begin

on the first day of the month and end on the last day of the month.

Either party shall have the right, upon reasonable notice, to examine

and audit the records, books of account, and charts of the other for a

period of one year prior to any audit request to the extent necessary

to verify the accuracy of any computation, statement or charge for

such service, and to verify compliance with the associated service

agreement. "Records" pursuant to this paragraph shall include

detailed measurement data by delivery point (meter setting). For this

purpose, each party shall retain all pertinent records in accordance

with applicable regulations. Each party shall provide the other with

access to personnel and records necessary to effectuate an examination

and audit. "Access" pursuant to this paragraph contemplates audits on

the other party's premises during normal business hours. Each party

may copy any documents that can be properly audited hereunder, and

each party agrees that such copies will be used only for their

purposes hereunder and will not be disclosed to unrelated parties.

Invoices for all gas received or delivered during each billing period

will be sent (by mail, express service or facsimile) on or about the

fifteenth day of each month. Payment shall be made to WNG at the

location specified on the invoice, within ten days from the date of

mailing or facsimile transmission of the invoice.

If payment of such invoice is not received by WNG within the time

stated herein, interest thereon shall accrue monthly at the currently

effective rate stated in Section 154.67 of the Federal Energy

Regulatory Commission's Regulations under the Natural Gas Act from the

due date until the date payment is received by WNG. In the event the

amount of the invoice is paid under protest and if it is later

determined that an overcharge has been paid, WNG shall refund the

amount of the overcharge with interest thereon from the date of

payment of the overcharge at the same rate currently charged for late

payments.