MarkWest Pioneer, L.L.C.

Original Volume No. 1

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

Original Sheet No. 59 Original Sheet No. 59

GENERAL TERMS AND CONDITIONS

(Continued)

8.4. For service required on any day under each of Shipper’s FT or IT Agreements,

Shipper shall provide Transporter with a nomination(s) providing the

Shipper’s requested Receipt Point(s), contract numbers, the applicable

service, the quantity of Gas to be delivered, the requested Delivery

Point(s), and such additional information as Transporter determines to be

necessary.

8.5. General Rules and Timeline – Pursuant to NAESB Standards 1.3.2, 1.3.3,

1.3.5, 1.3.6, 1.3.20, 1.3.21: The standard nominations timeline shall be as

follows:

8.5.1. The Timely Nomination Cycle - 11:30 am for nominations leaving

control of the nominating party; 11:45 am for receipt of nominations

by Transporter; noon to send Quick Response; 3:30 pm for receipt of

completed confirmations by Transporter from upstream and downstream

connected parties; 4:30 pm for receipt of scheduled quantities by

Shipper and point operator (Central Clock Time on the day prior to

flow).

8.5.2. The Evening Nomination Cycle - 6:00 pm for nominations leaving

control of the nominating party; 6:15 pm for receipt of nominations

by Transporter; 6:30 pm to send Quick Response; 9:00 pm for receipt

of completed confirmations by Transporter from upstream and

downstream connected parties; 10:00 pm for Transporter to provide

scheduled quantities to affected Shippers and point operators, and

to provide scheduled quantities to bumped parties (notice to bumped

parties), (Central Clock Time on the day prior to flow). Scheduled

quantities resulting from an Evening Nomination that does not cause

another Service Requester on Transporter to receive notice that it

is being bumped should be effective at 9:00 am on Gas day; and when

an Evening Nomination causes another Service Requester on

Transporter to receive notice that it is being bumped, the scheduled

quantities should be effective at 9:00 am on Gas day.