Located in the City of Vaughan, in the Boyd Conservation area, this $7,600,000 project included the construction of a new sewage pumping station (SPS). and approximately 600 meters of 500 mm inside diameter CPP force main and 200 mm sanitary sewer and associated manholes on Pine Valley Drive. The construction of the SPS included a 14 m deep, 6.4 m by 6.4 m square two-celled wet well with three (3) 82 kW submersible pumps, a 10.7 m by 11.0 m control building with an electrical room, odor control room, washroom, diesel generator room and 375 kW air cooled genset, and below grade piping gallery. The three wastewater pumps are capable of collectively delivering over 40 million liters per day.
Work on the project commenced in July 2005 and the station was put into service in September 2006 to accommodate a nearby expanded residential development and provide relief to the existing sewer system that could no longer handle the current flows.
Numerous challenges included ensuring automobile and pedestrian traffic was uninterrupted and maintaining existing sewage and domestic water flows to neighboring residents. The tunneling of 300 meters of 4' diameter under-road tunnel, extensive dewatering systems due to saturated ground conditions created additional challenges, however, ASCO adhered to the Conservation Authority restrictions and the project was successfully completed to meet the client's schedule.