Midwest Gas Storage, Inc.

First Revised Volume No. 1

Effective Date: 05/15/1994, Docket: CP90-454-004, Status: Effective

Original Sheet No. 501 Original Sheet No. 501 : Effective

GENERAL TERMS AND CONDITIONS

1. DEFINITIONS

1.1 The term "Agreement" shall mean the Service Agreement

executed by the Shipper and Midwest and any exhibits,

attachments and/or amendments thereto.

1.2 The term "BTU" shall mean one (1) British thermal unit, the

amount of heat required to raise the temperature of one (1)

pound of water one degree (1ø) Fahrenheit at sixty degrees

(60ø) Fahrenheit. (BTU is measured on a saturated basis at

14.73 psia.)

1.3 The term "Commission" shall mean the Federal Energy

Regulatory Commission or any successor regulatory authority

having jurisdiction.

1.4 The term "Day" shall mean a period of twenty-four (24)

consecutive hours, beginning at 12:00 noon, Eastern Time.

1.5 The term "Dekatherm (Dth)" shall mean one (1) thousand

(1,000) cubic feet of Gas (Mcf) with a heat content of

1,000 Btu per cubic foot measured on a dry (less than 7

pounds water per million cubic feet of gas) basis at 14.73

psia.)

1.6 The term "Equivalent Quantities" shall mean a quantity of

Gas containing an amount of Dths equal to the amount of

Dths received by Midwest for the account of Shipper at the

Point(s) of Receipt reduced, where applicable, by the Dths

removed for Midwest's Use as attributable to the Storage of

Shipper's Gas.

1.7 The term "Gas" shall mean natural gas, including casinghead

gas produced with crude oil, gas from gas wells and gas

from condensate wells and synthetic natural gas.

1.8 The term "Maximum Daily Injection Quantity" shall mean one

two-hundredth (1/200) of the Maximum Storage Quantity when

applicable to Rate Schedule FSS and shall mean one

thirtieth (1/30) of the Maximum Storage Quantity when

applicable to Rate Schedule ISS. Maximum Daily Injection

Quantity shall be reduced as the Calcutta-Carbon Storage