MarkWest Pioneer, L.L.C.

Original Volume No. 1

Effective Date: 04/01/2009, Docket: RP09-321-000, Status: Effective

Original Sheet No. 20 Original Sheet No. 20

RATE SCHEDULE FT-2

(Continued)

5.2. Gas Production Forecasts: The gas production forecasts shall consist of:

(a) actual production history by month for the Committed Woodford Shale

Production for the current year and past four years (if applicable), and (b)

production development forecasts by month by the Committed Woodford Shale

Production for the next ten years. Transporter may request, and Shipper

shall provide, supporting technical data to substantiate Shipper’s gas

production forecast.

5.3. Confidentiality: Shipper’s Gas Production Forecasts shall be clearly

labeled by Shipper as confidential and shall be treated as confidential by

Transporter. Such Gas Production Forecasts shall not be released publicly

without Shipper’s written consent or unless required by order or regulation

of a court or regulatory authority of competent jurisdiction.

6. RESERVATIONS

Transporter reserves the right to take such actions as may be required to preserve

the integrity of its system, including maintenance of service to other firm

customers.

7. GOVERMENTAL AUTHORIZATIONS

Transportation service under this Rate Schedule and effective FT-2 Agreements shall

be implemented pursuant to any applicable self-implementing authorizations or

program of the Commission for which Transporter has filed or in which Transporter

has agreed to participate.

8. GENERAL TERMS AND CONDITIONS

All of the GT&C of this Tariff are applicable to this Rate Schedule and service

hereunder, and are made a part hereof.