DEQ approves MATL certificate amendment

On Sept. 22, the Montana Department of Environmental Quality (DEQ) approved an application, submitted by Montana Tie Ltd. and MATL LLP, co-permittees for the Montana Alberta Tie Transmission Line, to amend their Certificate of Compliance.

The Certificate of Compliance authorizes construction of the Montana portion of the 230-kV line between Great Falls and a substation near Lethbridge, Alberta.

The DEQ issued an Environmental Assessment (EA) on Aug. 24, in response to the application for amendment.

After consideration of public comments, the DEQ approved a change in the Certificate to allow temporary construction activity in wetlands where there is no reasonable alternatives.

MATL has agreed to offset any temporary disturbance that remains two and five years after construction by making a monetary payment to a recognized statewide wetland mitigation bank.

Permanent guy wires and structures will continue to be prohibited in wetlands.

The decision document is available for review at For more information contact Tom Ring at 406-444-6785.