Columbia Gas Transmission LLC

Third Revised Volume No. 1

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Effective Date: 04/22/2009, Docket: RP09-468-000, Status: Effective

Original Sheet No. 519.02 Original Sheet No. 519.02

[For ISS-M Rate Schedule]

Revision No. ______

Control No. ______

Appendix A to Service Agreement No. ____________

Under Rate Schedule ISS-M

between Columbia Gas Transmission, LLC (Transporter)

and _______________________________________ (Shipper)

Interruptible Storage Quantity ____________ Dth

Service Commencement Month ___________, 20___

through

Service Termination Month ____________, 20___

CANCELLATION OF PREVIOUS APPENDIX A

Service changes pursuant to this Appendix A will commence on ____________,

20___. This Appendix A will cancel and supersede the previous Appendix A to

the Service Agreement dated ________________, 20___. With the exception of

this Appendix A, all other terms and conditions of the Service Agreement will

remain in full force and effect.

(SHIPPER) COLUMBIA GAS TRANSMISSION,LLC

By_________________________________ By_____________________________________

Its________________________________ Its____________________________________

Date_______________________________ Date ___________________________________