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Surface Water/Groundwater Monitoring and Remediation

Location: Cambridge, ON
Client: Northstar Aerospace (Canada)/NS Group/Ministry of Environment
Date 2005 – ongoing

At the former Northstar Aerospace (Canada) Inc. site in Cambridge, Ontario, on-going groundwater remediation is required to protect the nearby residential community.  Trichloroethylene (TCE), a common degreasing solvent, has been carried by the shallow groundwater system from the site and into the community for decades, affecting the indoor air quality of many homes.

AET staff operates and maintains a Pump and Treat system at the site as well as various soil vapour and indoor air mitigation systems in well over 200 homes.  Another critical role AET fulfills in this project is the management and implementation of the annual indoor air monitoring program for close to 500 residential properties in the Bishop Street community.  Groundwater and surface water monitoring programs are also conducted by AET to ensure the on-going protection of the neighbouring community.  Groundwater monitoring  includes approximately 150 wells and surface water from the Grand River at 6 seep and spring locations and 12 shore and transect points along the river, three times a year (Spring, Summer and Fall).