U S G Pipeline Company

ORIGINAL VOLUME NO. 1

Effective Date: 01/19/2009, Docket: RP09-177-000, Status: Effective

First Revised Sheet No. 73 First Revised Sheet No. 73

Superseding: Original Sheet No. 73

SERVICE AGREEMENT

Section 3. Rates. Shipper shall pay Transporter the charges and furnish

Retainage as described in the above-referenced Rate Schedule, unless otherwise

agreed to by the parties in writing and specified as an amendment to this Service

Agreement.

Section 4. Notices. Notices to Transporter under this Agreement shall be

addressed to:

Robert B. Cooper

USG PIPELINE COMPANY

550 West Adams Street

Dept. # 143-61

Chicago, Illinois 60661-3676

and notices to Shipper shall be addressed to it at

_________________________________________________,

Attention:_____________________,

until changed by either party by written notice.

SHIPPER USG Pipeline Company

By:____________________________ By:________________________

Title:_________________________ Title:_____________________

Revision No._____

Control No._____