Colorado Interstate Gas Company

First Revised Volume No. 1

Effective Date: 07/01/2003, Docket: RP03-410-000, Status: Effective

Eighth Revised Sheet No. 229D Eighth Revised Sheet No. 229D : Effective

Superseding: Seventh Revised Sheet No. 229D

GENERAL TERMS AND CONDITIONS

(Continued)

1.19 "Day" or "Gas Day" shall mean a period beginning at 9:00 a.m.

Central Clock Time and ending at 9:00 a.m. Central Clock Time on the

next calendar day.

1.20 "Dekatherm" or "Dth" shall mean the quantity of heat energy which is

equivalent to 1,000,000 British Thermal Units (MMBtu). One Dekatherm

of Gas shall mean the quantity of Gas which contains one Dekatherm

of heat energy, and will be reported on a dry MMBtu (or Dth) basis.

Dth is the standard quantity unit for Nominations, Confirmations and

Scheduled Quantities in the United States. The standard conversion

factor between Dth and Canadian Gigajoules (Gj) is 1.055056 Gjs per

Dth. As used in this Tariff, related service agreements, statements

and invoices, MMBtu and Dth are considered synonymous.

1.21 "Deliver" or "Delivered" shall mean the Tender of a quantity of

natural Gas by Transporter to Shipper, or for a Shipper's account,

or to a third Party for Shipper's account under an Agreement.

1.22 "Delivery Quantity" shall mean the quantity, expressed in Dth, of

Gas Delivered by Transporter at the Point(s) of Delivery for the

account of Shipper.