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## TRANSMISSION OF NATURAL GAS 

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## Saskatchewan, Manitoba, Ontario, Québec 

## Canadian Mainline 1 

(100% TransCanada) LENGTH: 14,900 km 2001 THROUGHPUT: 6.7 Bcf/d 

## Alberta 

## Alberta System 2 

(100% TransCanada) LENGTH: 22,500 km 2001 THROUGHPUT: 11.1 Bcf/d 

## TransCanada PipeLine Ventures Limited Partnership 3 

(100% TransCanada) LENGTH: 137 km 2001 THROUGHPUT: 0.2 Bcf/d 

## British Columbia 

## British Columbia System 4 

(100% TransCanada) LENGTH: 180 km 2001 THROUGHPUT: 1.1 Bcf/d 

## British Columbia, Alberta, Saskatchewan 

## Foothills Pipe Lines Ltd. 5 

(50% ownership Foothills Pipe Lines Ltd.; TransCanada: 69.5% Saskatchewan seg- ment; 74.5% Alberta seg- ment; 74.5% B.C. segment) LENGTH: 1,040 km 2001 THROUGHPUT: 3.1 Bcf/d 

## Oregon, California, Nevada 

## Tuscarora Gas Transmission Company 6 

(1% TransCanada directly; 16.4% indirectly through TC PipeLines, LP) LENGTH: 369 km 2001 THROUGHPUT: 0.1 Bcf/d 

## Montana, North Dakota, South Dakota, Minnesota, Iowa, Illinois, Indiana 

## Northern Border Pipeline Company 7 

(10% TransCanada indirectly through TC PipeLines, LP) LENGTH: 2,010 km 2001 THROUGHPUT: 2.3 Bcf/d 

## Minnesota, Wisconsin, Michigan 

## Great Lakes Gas Transmission Limited Partnership 8 

(50% TransCanada) LENGTH: 3,387 km 2001 THROUGHPUT: 2.2 Bcf/d 

## New York, Connecticut 

## Iroquois Gas Transmission System 9 

(40.96% TransCanada) LENGTH: 604 km 2001 THROUGHPUT: 0.9 Bcf/d 

## Québec 

## Trans Québec and Maritimes Pipeline Inc. 10 

(50% TransCanada) LENGTH: 572 km 2001 THROUGHPUT: 0.4 Bcf/d 

## Maine, New Hampshire 

## Portland Natural Gas Transmission System 11 

(33.29% TransCanada) LENGTH: 471 km 2001 THROUGHPUT: 0.1 Bcf/d 

## Alberta, Northwest Territories 

## Mackenzie Valley Extension 12 

(proposed by producers) 

## Alaska, Yukon, British Columbia, Alberta 

## Alaska Highway Pipeline 13 

(proposed by Foothills Pipe Lines Ltd. which is 50% owned by TransCanada) 

