The following activities are designated for the purpose of Section 58 of the Clean Water Act, 2006 (Risk Management Plan) where the activity is an existing significant drinking water threat:

the handling and storage of an organic solvent;
the non-residential handling and storage of dense non-aqueous phase liquids (DNAPLs); and
the management of runoff that contains chemicals used in the de-icing of aircraft.

The Risk Management Plan shall include:

- Up-to-date best management practices regarding handling and storage of organic solvents and DNAPLs and the management of runoff containing chemicals used in the de-icing of aircraft
- A spills response plan which includes procedures to contact the local drinking water plant operator
- Consideration of alternative products which would not cause a significant threat.

Risk Management Plans shall be prepared in accordance with the provisions listed in policy GENERAL-5.

This policy is not intended to capture residential use of incidental volumes of DNAPLs.

Note: Additional policies apply. See: MONITORING-1, GENERAL-5, and GENERAL-6.

MONITORING-1: Part IV Clean Water Act, 2006 tools (restricted land uses, Risk Management Plans and prohibition):
The Risk Management Official shall report annually by February 1st to the Source Protection Authority on the significant threat policies that designate an activity for the purpose of Section 58 (Risk Management Plans) or Section 57 (prohibition) of the Clean Water Act, 2006. This report will include the information required in Section 65 of Regulation 287/07 (information on the establishment and enforcement of Risk Management Plans, inspections and abatement measures in addition to descriptions of the administrative, enforcement and compliance results) related to the previous calendar year. Additionally, the Risk Management Official shall inform the Source Protection Authority of the method/procedure used to implement GENERAL-6 (restricted land uses).