Biosolids storage facilities at the woodlot are paved, walled on three sides, and covered during the rainy season.
Trace elements in biosolids are carefully monitored to ensure the biosolids remain compliant with the Ministry of Environment and Climate Change Strategy's Organic Matter Recycling Regulation. Trace elements enter the wastewater collection system from residences, businesses, and storm water runoff. Many of these trace elements are micronutrients and actually benefit plant growth, but they can be harmful in excess concentrations. Some trace elements are typically found at lower concentrations in biosolids than in the soils they are applied to. In BC as in many other jurisdictions, trace elements are monitored in biosolids; however, unlike many other jurisdictions, in BC they are also monitored in the soil.
Ongoing surface water monitoring reveals that water quality at the biosolids fertilization site remains within a range which is typical of background water quality. Research performed by Vancouver Island University has shown that trace elements introduced into the soil as a result of biosolids fertilization generally do not move far below the soil surface, usually within 5 to 10 centimetres, similar to results from many other studies. Nevertheless, to assure the safety of water supplies, biosolids applications occur only on suitable slopes and at least 30 metres from any watercourse.
To protect public health and the environment, we: