Environmental protection: hazardous waste; injection well disposal fee; provide for. Amends sec. 62506a of 1994 PA 451 (MCL 324.62506a).

Added new definitions for 'Class I multisource commercial hazardous waste disposal well' (requiring Class I status and 2025 operation) and clarified that 'multisource' means waste from more than one person, excluding subsidiaries.

Established a new fee of 0.417 cents per gallon with annual adjustments based on Consumer Price Index changes.

Created a new 'disposal well host community fund' to receive fee revenues and provide grants to cities and townships where wells are located.

Added requirement that owners or operators must assess fees against off-site generators, while on-site generators pay fees directly to the operator.

Added requirement for written fee exemption certifications with specific documentation requirements and a 4-year retention period.

Added enforcement provisions requiring the department to evaluate fee exemption certifications and take action against false certifications or unpaid fees.

Added exemptions for waste removed during state-funded site cleanup activities and waste from authorized 1-time closure activities (with exceptions for post-1988 inadvertent releases).