MarkWest Pioneer, L.L.C.

Original Volume No. 1

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Effective Date: 12/31/9999, Docket: RP09-367-000, Status: Accepted

Substitute Original Sheet No. 174 Substitute Original Sheet No. 174

Superseding: Original Sheet No. 174

MARKWEST PIONEER, L.L.C.

FORM OF SERVICE AGREEMENT

RATE SCHEDULE IT

Exhibit A to IT Agreement No. ____

Under Rate Schedule IT Between

MarkWest Pioneer, L.L.C. and ____________________________

Maximum Daily Quantity (“MDQ”): _________________MMBtu/day

Receipt Point(s):_______________________

Receipt Point(s) Pressure (if specified): _________________psig

Delivery Point(s):______________________

Delivery Point(s) Pressure (if specified): _________________psig

Rate and Charges: Shipper shall pay all applicable rates and charges as specified in Rate

Schedule IT of Transporter’s Tariff, including Maximum Recourse Rates, ACA Charge, Fuel and

Gas Loss Retention Percentage, and any other applicable surcharges, except to the extent

specifically agreed otherwise, as set forth below:

Discounted Rate:

Negotiated Rate:

Other Conditions: