Environmental protection: cleanups; cleanup to residential and safe drinking water standards; require unless technically infeasible. Amends secs. 20118, 20120a, 20120b, 20120e & 20121 of 1994 PA 451 (MCL 324.20118 et seq.). TIE BAR WITH: HB 4638'25, HB 4640'25

HB 4636 amends Michigan’s environmental cleanup law to require that contaminated site cleanups meet residential land use standards and restore groundwater to safe drinking water standards, where technically feasible. It directly affects property owners, developers, and environmental agencies responsible for cleaning up polluted sites by establishing clear cleanup categories (like residential or nonresidential) and allowing site-specific alternatives only when meeting standard criteria is proven technically infeasible. The bill specifies that cleanups must protect public health, stop contamination spread, and comply with state/federal standards, with exceptions permitted only if documented technical infeasibility exists or if the environmental benefit of stricter cleanup would be outweighed by negative impacts. This update clarifies existing rules under Michigan’s Natural Resources and Environmental Protection Act (MCL 324.20118 et seq.) without creating new programs.