A concern has risen among a group of residents in Caledon regarding the town’s plan to convert a local pond into a construction fill site. Experts have pointed out the potential risk of groundwater contamination associated with this proposal. The controversy initiated following a decision made in May that could allow a prominent developer in the Greater Toronto Area to bring surplus soil to their land in Caledon, which includes a rehabilitated gravel pit known locally as Swan Lake.
Retired water resources engineer, Ian McLaurin, emphasized the high risk involved in projects that involve dumping soil near groundwater and highlighted the provincial regulations aimed at preventing soil contamination. He stressed the importance of safeguarding groundwater, which is a primary source of drinking water for many individuals in the region.
Residents are questioning the town’s ability to ensure the protection of their water sources and the absence of pollutants in the soil. While there have been both successful and failed fill projects in Ontario, experts could not provide a similar case to the proposed plan at Swan Lake.
Mayor Annette Groves clarified that the project is not yet approved and will only proceed if the developer can demonstrate its safety measures. The final decision rests with the town council, and Groves reassured that they would prioritize safeguarding the community’s drinking water.
In response to concerns raised, hydrogeologist Steve Holysh acknowledged residents’ anxieties about the quality of materials being introduced into the area. He explained the testing process involved in fill projects, emphasizing the importance of thorough soil testing and monitoring during transportation to prevent any potential contamination.
Reflecting on past cases, instances from Scugog and Milton highlighted the importance of stringent regulations and monitoring to prevent groundwater contamination. Despite differing outcomes, Holysh emphasized the critical nature of preventing contamination rather than remediating it later.
Local councillors, Lynn Kiernan and Christina Early, echoed residents’ worries about the project’s monitoring and safety measures. They raised questions about the legality and necessity of filling the already rehabilitated pit at Swan Lake. The officials assured that safety plans would be rigorously analyzed by municipal staff and, if needed, external experts would be consulted for additional insights.
The proposal is subject to thorough legislative and technical reviews, and any further steps will be reported to the council for consideration.
