Michigan would assess contamination risks at business and industrial shoreline properties

Michigan's environmental agency would assess contamination risks using available records and seek help from public and private organizations. The assessment would cover properties used now or formerly for business or industry bordering a Great Lake, the St. Mary's River, the Detroit River, the St. Clair River, or Lake St. Clair. Ratings would be high, medium, or low risk, based on property history, hazardous substances, compliance with environmental duties, inspections, monitoring, expected water levels, and nearby water supply intakes. The bill would take effect only if Senate Bills 1183 and 1184 also become law. The agency would complete the assessment no later than January 1, 2028.

Michigan's environmental agency would list every covered property and its risk assessment results in a database on its website. The database would cover assessed properties bordering the Great Lakes, the St. Mary's River, the Detroit River, the St. Clair River, or Lake St. Clair. The bill would take effect only if Senate Bills 1183 and 1184 also become law. The agency would update the risk assessments and database at least once every five years.