Home Solutions Dewatering – Pumping from a Construction Site to a Creek while Meeting Stringent Water Quality Requirements

Dewatering – Pumping from a Construction Site to a Creek while Meeting Stringent Water Quality Requirements

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The Aquatech team was called upon to respond to an emergency situation involved with the construction of a new interchange at Highway 400 and Teston Road in the City of Vaughan. The site sat in a low-level area with the geography sloping downward from both northerly and southerly directions. As construction involved the stripping of several acres of land in preparation for the work, measures had been taken to address storm water flow and site run-off to the outlet in an existing creek. However, significant rainfall in the spring season overwhelmed the storm water management devices and large volumes of turbid water entered the nearby creek. Aquatech was immediately enlisted to institute a storm water bypass treatment system to mitigate the turbid water, which it did by installing a fully automated bypass and treatment system comprised of numerous automated primary and standby pumps, Enviro-tanks, sand media filters and pressurized micron filters. While the influent turbidity levels were found to be in excess of 2,000 NTU’s, the treatment system implemented lowered these levels to less than 10 NTU’s and addressing flows up to 8,000 L/min.