MidContinent Express Pipeline LLC

Original Volume No. 1

 Contents / Previous / Next / Main Tariff Index

Effective Date: 04/10/2009, Docket: RP09-531-000, Status: Effective

First Revised Sheet No. 163 First Revised Sheet No. 163

Superseding: Original Sheet No. 163

GENERAL TERMS AND CONDITIONS

----------------------------

(c) The Monthly Index Price (MIP) is based on prices as

reported in "Gas Daily". MEP shall use either the highest weekly

average price or the lowest weekly average price determined for each

Month as the MIP for all monthly Imbalances subject to cashout

hereunder, as described below. The average price for each week shall

be the price for the applicable location indicated below in the

referenced publication in the table entitled "Weekly Weighted Average

Prices" (or the superseding reference if the publication titling is

revised). The issues of such publication to be used in determining

each Month's highest weekly average price and lowest weekly average

price shall include all issues containing the above-referenced table

with publication dates within the calendar month in which the Imbalance

occurred, plus the first publication of the next Month after the

Imbalance occurred containing the above-referenced table. If the

weekly price for one or more of the locations below is no longer

published by Gas Daily, the equivalent prices in the Energy

Intelligence Group publication "Natural Gas Week", under the column

labeled "$/MMBtu" in the table entitled "Natural Gas Weekly Spot

Prices" will be used to determine the MIP's for all locations indicated

below.

(1) For Gas owed MEP (Underage Imbalances), the

MIP shall be the highest of the weekly average prices for the

applicable location indicated below for the Month in which the

Imbalance occurred.

(2) For Gas owed Shipper (Overage Imbalances),

the MIP shall be the lowest of the weekly average prices for the

applicable location indicated below for the Month in which the

Imbalance occurred.

(d) Trading and cashout of imbalances shall be

implemented within Operational Impact Areas (OIAs). There are four

Operational Impact Areas on the MEP System. OIA-1 is defined as the

Interconnection of MEP or MarkWest and Enogex and uses the NGPL,

Midcontinent Index Price. The following defines the geographical

boundaries of the remaining Operational Impact Areas and the price

index utilized for each area for determination of cashout prices: