Where the Nutrient Management Act does not require an approval, the existing and future storage and application of agricultural source material to land is designated for the purposes of Section 57 of the Clean Water Act, and is therefore prohibited where the vulnerability score is 10, and the activities would 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.