The Canadian Mainline System offers several services for shippers to manage capacity. These services include the use of Temporary and Permanent Assignments as well as Capacity Release and Enhanced Capacity Release on the Great Lakes system. Please contact your Customer Account Manager for further information.
See Contracts for Temporary Transportation Contract Assignment Form.
United States: 1.800.447.8066
Portland Natural Gas Transmission System(PNGTS): 1.800.830.9865
Columbia Gas Transmission, Crossroads Pipeline,
Hardy Storage Company & Millennium Pipeline: 1.800.835.7191
Columbia Gulf Transmission: 1.866.485.3427
Columbia Midstream: 1.855.511.4942