ANR Pipeline Company

Second Revised Volume No. 1

Effective Date: 11/01/2006, Docket: RP06-613-000, Status: Effective

Fourth Revised Sheet No. 143 Fourth Revised Sheet No. 143 : Effective

Superseding: Third Revised Sheet No. 143

GENERAL TERMS AND CONDITIONS

(Continued)

(1) Canadian Spot Price Index. The Spot Price Index for Canadian

Receipts shall be the Canadian Spot Price Index and will be

determined for a week by use of the published weekly spot prices

stated in U.S. Dollars in the following two publications: (i)

Btu Weekly under the heading "Btu's Natural Gas Spot Diary,

Canadian Export, Emerson, Weekly WACOG;" and (ii) Natural Gas

Week under the heading "Canadian Price Report, Delivered to Pipe

U.S.$, Manitoba, Emerson Border". The Canadian Spot Price Index

for Deficient Quantities will be the highest of the simple

weekly averages of the Emerson spot prices in the two

publications plus the variable costs on Viking Gas Transmission

Company ("Viking Variable Costs"). The Canadian Spot Price

Index for Excess Quantities will be the lowest of the simple

weekly averages of the Emerson spot prices in the two

publications plus the Viking Variable Costs. The Viking

Variable Costs shall be the sum of Viking's firm transportation

commodity rate, plus Viking's fuel at the average of the

published prices reported in the two publications, plus any

Viking surcharge(s) applicable to a five hundred (500) mile

haul.

(2) Material Changes or Cessation of Publication. If there is a

material change in the publication to be used in determining the

Canadian Spot Price Index or in the definition of how prices are

reported for deliveries to the interstate pipelines, then the

prices for such pipelines in such publication will no longer be

used in calculating the Index Price.

If, at any time, Btu Weekly or Natural Gas Week ceases

publication, then the Bloomberg Natural Gas Report shall be

substituted. If Bloomberg Natural Gas Report is used, the

average of the high and low quote stated in U.S. Dollars in the

map titled "Bloomberg Natural Gas/Petroleum Product Prices,"

under the heading "Emerson, Manitoba", plus the Viking Variable

Costs, shall be utilized. To the extent the reported prices

referenced above are not published for the Month required,

Transporter shall determine the Canadian Spot Price Index using

another similar publication selected by Transporter in its

reasonable judgment that is broadly published and widely accepted

within the gas industry as a reliable source for the quotation of

gas prices.