What are the Chemicals of Concern (CoCs) for the Sudbury Soils Study?
The 2001 soil sampling program analyzed for 20 parameters, including: aluminum, antimony, arsenic, barium, beryllium, cadmium, calcium, chromium, cobalt, copper, iron, lead, magnesium, manganese, molybdenum, nickel, selenium, strontium, vanadium, and zinc. The data from the soil survey were examined and evaluated relative to three criteria: 1. LLevels of the chemical in local soils exceeds Ministry of the Environment (MOE) trigger levels for further study; 2. TThe chemical is found throughout the study area, or throughout one of our communities of interest (Sudbury core, Copper Cliff, Coniston, Falconbridge, Whitefish Lake First Nation and Wahnapitae First Nation); 3. TThe chemical is related to smelting activities. Based on this evaluation 6 chemicals arsenic, cobalt, copper, lead, nickel and selenium, were considered in the risk assessments. Cadmium was also included as a COC for the ecological risk assessment.
