Senate Bill 1584 Summary

• Amends the Natural Resources and Environmental Protection Act to establish cleanup criteria for contaminated sites across multiple land use categories: residential, commercial, recreational, industrial, and limited versions of each category.

• Changes the carcinogenic risk standard for cleanup criteria from 1 additional cancer per 100,000 individuals to 1 additional cancer per 1,000,000 individuals, making cleanup standards more stringent.

• Requires that cleanup criteria for groundwater use the more stringent standard between state drinking water standards and aesthetic characteristics standards, unless groundwater use is reliably restricted.

• Allows the department to approve remedial action plans using site-specific criteria, probabilistic methods, and area-wide cleanup plans encompassing multiple facilities when appropriate.

• Requires documentation of current zoning consistency or legal nonconforming use status before approving remedial action plans in non-residential categories, with final approval contingent on completion of any proposed zoning changes.