Caledonia Gas And Storage

Original Volume No. 1

Effective Date: 05/01/2007, Docket: CP05- 15-003, Status: Effective

Original Sheet No. 77 Original Sheet No. 77 : Effective

Revision No.___________

Control No. ______________

Appendix A

to the Service Agreement No. __________

Under ISS Rate Schedule

Between

Caledonia Energy Partners, L.L.C. (Caledonia)

And

________________________ (Customer)

Dated ________________

Maximum Interruptible Storage Capacity (MISC) ______________

Maximum Daily Injection Quantity (MDIQ) ______________

Injection Period: from: ________ to: ___________

Maximum Daily Withdrawal Quantity (MDWQ) ______________

Withdrawal Period: from: ________ to: ___________

Ratchet Levels:

The quantities of Gas that Customer may inject or withdraw, pursuant to this

ISS Service Agreement shall be determined by the following ratchets, as a

percentage of MDIQ and MDWQ.

Maximum Daily Injection Quantity Subject to the following Ratchets:

Storage Storage MDIQ Available Daily Injection

Inventory* Inventory Percentage % Quantity (ADIQ) (Dth)

0 to ____% _________ _________ ___________________

____ to ____ % _________ _________ ___________________