Table 1: A comparison of the Ontario and ASCE decommissioning guidelines

*Ontario Ministry of Natural Resources

1999 OMNR* draft guidelines 1997 ASCE guidelines
Step 1: Preliminary Identify potential candidates and stakeholders, commence consultation with other agencies Phases 1 and 2: Initial retirement study, public consultation
Step 2: Assessment Design studies, assessment of risks and costs, environmental issues, legal issues Phases 3 and 4: Data collection and analysis, evaluation of alternatives
Step 3: Draft proposal Review risks/costs, other potential alternatives, selected preferred alternative Phase 4
Step 4: Review/Approval EA Process, public consultation Phase 2: Consultation
Step 5: Implementation Tender, decommission dam, perform long term monitoring as required Phase 5 and 6: Implementation, long term management