Background Wastech Services Ltd. (Wastech) moves and disposes of waste. In 1996, Wastech and the Greater Vancouver Sewerage and Drainage District (Metro) entered into a 20-year contract for the disposal of waste from the Greater Vancouver Regional District (the Contract). Wastech agreed to remove and transport waste to three disposal facilities. Metro was responsible for allocating where the waste was to be disposed. The volume of waste allocated to each facility was a critical variable in calculating Wastech's compensation. In 2010, Metro significantly redirected the volume of waste between the three facilities, such that it was impossible for Wastech to achieve its target operating revenue.