MI HB4258

Requires applicants to submit a cumulative pollution report paid for by the applicant when applying for new or renewal air quality permits in "likely disparate impact areas" (zip codes with 35 or more active permits).

Mandates the report include air dispersion modeling of criteria pollutants and toxic air contaminants to identify the geographic area affected by the source's emissions.

Requires the Department of Environmental Quality to hold at least one public meeting on the permit application and one on the proposed draft permit, with applicant participation.

Prohibits permit issuance unless the department has considered cumulative pollution levels and effects, and allows the department to deny permits or impose conditions based on cumulative pollution impacts.

Defines "cumulative pollution levels and effects" to include past and current environmental pollution from all origins in all media within the area where emissions are likely to be deposited, and the resulting effects on the environment and residents.