Step 2: Historical Review

Navigate between each steps Step 1: Site Identification Step 2: Historical Review Step 3: Initial Testing Program Step 4: Initial Site Classification Step 5: Detailed Testing Program Step 6: Site Reclassification Step 7: Develop Risk Management Strategy Step 8: Implement Remediation/Risk Management Strategy Step 9: Confirmatory Sampling Step 10: Long-Term Monitoring

For the historical review, gather all the historical and current information related to the site. Completion of this step should result in the identification of the Areas of Potential Environmental Concern (APEC) and associated uncertainties to inform subsequent investigations. Once the review is complete, initial testing can begin (Step 3).

How to Prepare

  • Gather historical information from a variety of sources, including:
    • reports;
    • aerial photographs;
    • insurance maps and reports;
    • property title searches;
    • federal, provincial, territorial, and municipal archives;
    • regulatory agency records;
    • company records;
    • topographic and geological maps;
    • site plans and drawings.
  • Identify fisheries in the area.
  • Characterize fish habitat and the aquatic ecosystem on or near the site.

What to Do

  • Conduct a site visit(s).
  • Interview informed persons:
    • Discussions should be held with key site personnel at both the subject site and surrounding lands.
  • Conduct a Phase I Environmental Site Assessment (ESA).

How Fisheries and Oceans Canada (DFO) Expert Support Helps

  • Provide available fish, fish habitat, aquatic ecosystem and fisheries background information relevant to the site.
  • With respect to fish and fish habitat:
    • identify information gaps;
    • provide advice on information gathering (e.g., identify/provide relevant historical documents).
  • Provide information on regulatory or advisory involvement.
  • Participate in site visit(s).

Supporting Documents

Next Step: Initial Testing