Overthrust Pipeline Company

First Revised Volume No. 1-A

Effective Date: 05/08/1998, Docket: RP98-184-000, Status: Effective

Second Revised Sheet No. 32 Second Revised Sheet No. 32 : Superseded

Superseding: First Revised Sheet No. 32

1.9 "Curtailment" means reduction or temporary

suspension of firm service.

1.10 "Day" means a period of 24 consecutive hours,

beginning at 9:00 a.m. Central Clock Time (8:00 a.m.

Mountain Time). A "business day" is defined as Monday

through Friday, excluding Federal Banking Holidays for

transactions in the U.S., and similar holidays for

transactions occurring in Canada and Mexico.

1.11 "Daily quantity (DQ)" means the quantity of

gas set forth on Shipper's transportation service agreement

under Rate Schedule IT.

1.12 "Decatherm" or "Dth" means a unit of heating

value equivalent to 1,000,000 Btu's.

1.13 "Delivery point" means a point where

Overthrust delivers gas to or for the account of Shipper

after transportation.

1.14 "Equivalent volumes" means the sum of the

volumes of gas measured in Mcf received by Overthrust for

the account of Shipper at the points of receipt during any

given period of time, (a) reduced by (i) Shipper's pro rata

share of unaccounted-for gas resulting from the operations

of Overthrust during the same period of time and (ii) any

gas vented during the same period of time, (b) adjusted for

any variations in Btu content, as corrected for any water

vapor in excess of five pounds per million cubic feet of

gas. The volumes of gas delivered at the point of delivery

after transportation shall be the thermal equivalent of the

volumes of gas received at the point of receipt for

transportation, after reduction, correction and adjustment

as provided above.

1.15 "FERC or Commission" means the Federal Energy

Regulatory Commission or any federal commission, agency or

other governmental body or bodies succeeding to, lawfully

exercising or superseding any powers which are exercisable

by the Federal Energy Regulatory Commission.

1.16 "Force Majeure" shall include without

limitation by this recital, acts of God including fires,

explosions, earthquakes or volcanic eruptions, storms,

floods, extreme cold or freezing, washouts; necessity for

compliance with any court order, law, regulation or

ordinance promulgated by any governmental authority having