Home › Authors › Ontario Hydro. Route and Site Selection Division. 👤 Ontario Hydro. Route and Site Selection Division. 2 books Books by Ontario Hydro. Route and Site Selection Division. Procedural document for processing secondary uses of Ontario Hydro property - Exemption Order OH-27, File #00541.061, March 30, 1983, Revision 1, December 16, 1983 1984 Environmental Assessment Supply to the Elliot Lake Area 1980