A Resident made an inquiry about ground water at the United Soil Restoration Project Site so United Soils has shared these study results with us.
Golder Associated Ltd. has completed baseline groundwater monitoring at the Lee Sand & Gravel property located at 14245 Ninth Line, Town of Whitchurch-Stouffville, Ontario (referred to as the “Site”) to determine the chemical quality of the on-Site groundwater. The baseline study conducted in 2012 consisted of installation of monitoring wells around the perimeter of the Site with additional monitoring wells in the central area of the Site. In August 2012, the reported concentration of phosphorus in these monitoring wells were less than the laboratory detection limit (<50 micrograms per Litre). In addition, based on groundwater elevation data and groundwater monitoring events completed between 2012 and 2014, groundwater has consistently been found to flow in a south-southwesterly direction (i.e., away from Musselman’s Lake).
Based on our current understanding and findings, it is unlikely that phosphorus levels in Musselman’s Lake (located approximately 900 m north-northwest of the Site) are affected by the activities at the Lee Sand & Gravel Site. We note that inorganic phosphorous in groundwater is typically present as orthophosphate, which is not particularly mobile in groundwater. Further, the Lake Simcoe Region Conservation Authority’s report on Musselman’s Lake identified runoff from agricultural land, urban stormwater runoff, and discharges from improperly functioning septic systems as significant contributors of phosphorus to the Lake .