The existing handling and storage of commercial fertilizer is designated for the purposes of Section 58 of the Clean Water Act, and therefore requires a risk management plan for those not phased in under the Nutrient Management Act, where the activity is a significant drinking water threat. The risk management plan, at a minimum, will be based on contemporary standards and shall require:

1) liquid fertilizer to be stored in double-walled tanks or secondary containment facilities, with collision protection,
2) dry fertilizer to be stored undercover on impervious floor surfaces with no drainage outlets so that the handling and storage of commercial fertilizer ceases to be a significant drinking water threat.

MON-6: By February 1 of each year, risk management officials shall report annually to the local source protection authority with the information required in Section 65 of Regulation 287/07 related to the previous calendar year on the significant threat policies that designate an activity for the purpose of Section 58 risk management plans or Section 57 prohibition.