Columbia Gas Transmission LLC

Third Revised Volume No. 1

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Effective Date: 03/03/2009, Docket: RP09-340-000, Status: Effective

Original Sheet No. 509 Original Sheet No. 509

[For OPT Rate Schedule] Revision No. ________

Appendix A to Service Agreement No. ____________

Under Rate Schedule OPT

between Columbia Gas Transmission, LLC (Transporter)

and ________________________________________ (Shipper)

Transportation Demand

Service under this Service Agreement may be interrupted for ____ days annually.

Begin End Transportation Recurrence

Date Date Demand Dth/day Interval

Primary Receipt Points

Begin End Scheduling Scheduling Measuring Measuring Maximum Daily Minimum Receipt Hourly Recurrence

Date Date Point No. Point Name Point No. Point Name Quantity (Dth/day) Pressure Obligation (psig) 1/ Flowrate (Dth/hour) 1/ Interval

Primary Delivery Points

Maximum Daily Design Daily Minimum Delivery Hourly

Begin End Scheduling Scheduling Measuring Measuring Delivery Obligation Quantity Aggregate Daily Pressure Obligation Flowrate Recurrence

Date Date Point No. Point Name Point No. Point Name (Dth/day) 1/ (Dth/day) 1/ Quantity 1/ psig) 1/ (Dth/hour) 1/ Interval

1/ Application of MDDOs, DDQs and ADQs and/or minimum pressure and/or hourly flowrate shall be as follows:

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The Master List of Interconnects (MLI) as defined in Section 1 of the General Terms and Conditions of Transporter's Tariff is incorporated herein by reference for the

purposes of listing valid secondary interruptible receipt points and delivery points.

___ Yes ___ No (Check applicable blank) Transporter and Shipper have mutually agreed to a Regulatory Restructuring Reduction Option pursuant to Section 42 of the

General Terms and Conditions of Transporter's FERC Gas Tariff.