MarkWest Pioneer, L.L.C.

Original Volume No. 1

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

Original Sheet No. 63 Original Sheet No. 63

GENERAL TERMS AND CONDITIONS

(Continued)

8.9.2. The written designation must specify any limits on the authority of

the agent, including any time limit for the designation.

Transporter may reject any Shipper’s request to delegate

responsibilities if the limitations on the designation would impose

undue administrative burdens on Transporter.

8.9.3. Transporter will rely on communications from a Shipper’s agent for

all nomination purposes, except to the extent the designation is

expressly limited. Communications by Transporter to such agent will

be deemed notice to Shipper.

8.9.4. Any third party may administer multiple transportation agreements as

the agent for one or more Shippers, but the agent must make

nominations and otherwise administer and account separately for each

transportation agreement.

9. SCHEDULING PRIORITY

9.1. If Transporter is unable on any day to satisfy all nominations for service,

then Transporter will schedule service in the following order of priority

from first scheduled to last scheduled:

9.1.1. First, nominations within Shipper’s MDQ from Primary Receipt Points

and Primary Delivery Points under Rate Schedules FT-1 and FT-2; if

all such nominations cannot be satisfied, Transporter shall schedule

nominations within this priority level pro rata based on nominated

quantities within Shipper’s MDQ.

9.1.2. Second, nominations within Shipper’s MDQ from Secondary Receipt

Points or Secondary Delivery Points under Rate Schedules FT-1 and

FT-2; if all such nominations cannot be satisfied, Transporter shall

schedule nominations within this priority level pro rata based on

nominated quantities within Shipper’s MDQ.