Transwestern Pipeline Company

Second Revised Volume No. 1

Effective Date: 02/01/1993, Docket: RS92- 87-003, Status: Effective

2nd Revised Sheet No. 10 2nd Revised Sheet No. 10 : Effective

Superseding: Substitute 1st Revised Sheet No. 10

RATE SCHEDULE FTS-1

Firm Transportation Service

(continued)

4. CHANGES IN RATES

Transporter shall have the unilateral right to file with the appropriate

regulatory authority and make changes effective in (a) the rates and

charges applicable to this Rate Schedule, (b) this Rate Schedule, pursuant

to which service hereunder is rendered; provided, however, that the firm

character

of service shall not be subject to change hereunder, and/or (c) any

provisions of the General Terms and Conditions applicable to this Rate

Schedule. Such changes may include, but shall not be limited to, changes

in the Transport Fuel percentages set forth on the currently effective

Rate Sheets. Such Transport Fuel percentages may be changed from time to

time by Transporter to reflect changes in fuel requirements. Such changes

may

be implemented through a tariff filing. Transporter agrees that Shipper

may protest or contest the aforementioned filings, or may seek

authorization from duly constituted regulatory authorities for such

adjustment of Transporter's existing FERC Gas Tariff as may be found

necessary to assure that the provisions in (a), (b) or (c) above are just

and reasonable.

5. NOMINATION AND SCHEDULING OF RECEIPTS AND DELIVERIES

Transporter shall schedule each Shipper's nominations in accordance with

Sections 22 and 27 of the General Terms and Conditions of this Tariff.

Deliveries of gas to Transporter for transportation hereunder shall be

made at points on Transporter's pipeline system at a pressure sufficient

to enter the pipeline system, and deliveries of gas from Transporter for

Shipper shall be made at points on Transporter's pipeline system as

scheduled under Shipper's Service Agreement.