Treasury Board of Canada's public registry of contaminated sites for which the federal government has accepted some or all financial responsibility. As of 2026, FCSI lists more than 24,000 active and closed sites across all federal departments.
The Federal Contaminated Sites Inventory is maintained by the Treasury Board of Canada Secretariat under the Federal Contaminated Sites Action Plan (FCSAP). It records sites contaminated by past federal activities including military bases, harbours, airports, RCMP detachments, fuel depots, abandoned mines on Crown land, and Indigenous and Northern Affairs sites.
Each FCSI record carries a site identifier, custodian department, location, contamination class, contaminants of concern, current step in the 10-step federal process, and total federal expenditure to date. The inventory is updated continuously and is searchable at the public Treasury Board portal. As of 2026, 80 FCSI sites are confirmed for PFAS, with hundreds more under investigation, and the public database forms the spine of the Nelson Canada PFAS sites registry.
FCSI is the procurement on-ramp for federal remediation work: site assessment, remedial action, and long-term monitoring contracts are scoped against the FCSI record and procured through Public Services and Procurement Canada (PSPC).
Also known as: FCSI, Federal Contaminated Sites Inventory.
A regulatory designation for the most effective and advanced stage of development of activities and operating methods. Regulators use BAT to set minimum performance standards for pollution control and contaminated-site remediation, anchored in technical and economic feasibility rather than vendor preference.
The U.S. federal law passed in 1980 that establishes liability, cleanup standards, and the Superfund program for sites contaminated with hazardous substances. The foundational statute for U.S. environmental remediation and the basis for the 2024 designation of PFOA and PFOS as hazardous substances.
A 2001 international treaty in force since 2004 that requires signatory countries to eliminate or restrict the production, use, and release of designated Persistent Organic Pollutants, including PCBs, dioxins, furans, and a growing list of PFAS compounds.
An independent third-party verification process for environmental technology performance, originally administered by the U.S. EPA and now operated by national and international programs in Canada, the European Union, and Asia. ETV documents what a technology actually achieves under defined conditions, separate from vendor marketing claims.