Caledonia Gas And Storage

Original Volume No. 1

Effective Date: 12/05/2007, Docket: RP08- 57-000, Status: Effective

Original Sheet No. 74D Original Sheet No. 74D : Effective

Revision No.___________

Control No. ______________

Appendix A

to the Service Agreement No. __________

Under AISS Rate Schedule

Between

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

And

________________________ (Customer)

Dated ________________

Maximum Advanced Interruptible Storage Capacity (MAISC) ______________

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

AISS 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 Balance*

Percentage (%)

Storage Balance

(Dth)

MDIQ

Percentage (%)

Available Daily Injection Quantity (ADIQ) (Dth)

0 to ____%

____ to ____%