2025 House Bill 4638

Administrative procedure: rules; definition of a rule; exclude cleanup criteria and target detection limits.

A bill to amend 1969 PA 306, entitled “Administrative procedures act of 1969,” by amending section 7 (MCL 24.207), as amended by 2022 PA 134.

Official record

AI Analysis – Experimental

House Bills 4636, 4638 and 4640 overhauls Michigan’s environmental contamination laws by imposing stricter reporting, planning, and remediation requirements on property owners and operators, enhancing public transparency, and strengthening enforcement and oversight mechanisms.

Introduced in the House

June 10, 2025

Introduced by Rep. Noah Arbit (D-20) and 23 co-sponsors

Co-sponsored by Reps. Reggie Miller (D-31), Matt Koleszar (D-22), Jason Morgan (D-23), Carrie Rheingans (D-47), Penelope Tsernoglou (D-75), Emily Dievendorf (D-77), Tonya Myers Phillips (D-7), Natalie Price (D-6), Erin Byrnes (D-15), Laurie Pohutsky (D-17), Kara Hope (D-74), Jason Hoskins (D-18), Dylan Wegela (D-26), Jimmie Wilson (D-32), Denise Mentzer (D-61), Morgan Foreman (D-33), Phil Skaggs (D-80), Sharon MacDonell (D-56), Donavan McKinney (D-11), Peter Herzberg (D-25), Jasper Martus (D-69), Kelly Breen (D-21) and Cynthia Neeley (D-70)

Referred to the Committee on Government Operations