Marginal note:Shareholder agreement not to be amended
(6) Every certificate of public convenience and necessity declared to be issued by this Act is subject to the condition that Westcoast Transmission Company Limited, Alberta Gas Trunk Line Company Limited and Foothills Pipe Lines (Yukon) Ltd. shall not, without the prior approval of the Governor in Council and the Board, terminate, alter or amend the shareholders agreement entered into by those companies dated August 4, 1977 as amended prior to February 3, 1978.