Within a wellhead protection area where the vulnerability score is 10, any existing and future storage of organic solvents where it is a significant drinking water threat is designated for the purpose of Section 58 of the Clean Water Act, and requires a Risk Management Plan.
The Risk Management Official shall negotiate or establish a Risk Management Plan with the person engaged in the designated threat activity within five years of the Plan coming into effect. The RMP is to contain, at a minimum, structural or management alterations (if any) which when implemented will ensure that existing operations function in a manner which minimizes the risk to sources of municipal drinking water. This policy excludes residential use.