Policy Text:
Municipalities reviewing proposals under the Planning Act or Condominium Act for new development and for expansions to existing development located in a highly vulnerable aquifer or significant groundwater recharge area, and involving one or more of the activities listed below, should incorporate measures/management practices to adequately manage the risk to groundwater quality associated with those activities. This policy contains examples of land uses associated with these activities, which are low drinking water threats, and is not considered to be an exhaustive list.
the handling and storage of more than 25 litres of dense non-aqueous-phase liquids (DNAPLs) and/or organic solvents (e.g., metal manufacturing, electroplating and fabrication industries, automotive or equipment repair shops, furniture refinishing shops, dry cleaning establishments)
the handling and storage of more than 2,500 kilograms or litres of commercial fertilizer and/or more than 250 kilograms or litres of pesticide where it is sold or used for application at other sites, except where it is manufactured or processed (e.g., lawn and garden centres, farm supply stores, yard maintenance contractors, golf courses)
the handling and storage of more than 2,500 litres of liquid fuel (e.g., gas stations)
the handling and storage of more than 500 tonnes of road salt (e.g., public or private maintenance yards)
at or above-grade snow storage that is more than 1 hectare in size (e.g., public or private maintenance yards, snow dumps)
the storage of mine tailings (e.g., mineral extraction sites)
the storage of PCBs (e.g., waste transfer stations)
If there is any evidence of surface karst formations (e.g., disappearing streams, sinkholes, caves, vertical fissures) on the property, the municipality should require the developer to have a karst assessment completed by a karst specialist to determine what, if any, additional risk management measures may be required.
This requirement could be waived if the proponent can demonstrate through a site specific investigation that a property does not exhibit characteristics of a highly vulnerable aquifer and/or significant groundwater recharge area.