2026 House Bill 5557

Environmental protection: air pollution; calculation of emission profile data; modify.

A bill to amend 1994 PA 451, entitled “Natural resources and environmental protection act,” by amending section 5503 (MCL 324.5503).

AI Analysis – Experimental

House Bill No. 5557 updates Michigan’s air quality management statute by clarifying departmental authority and aligning emissions inventory calculations with the longest timeframes allowed under the federal Clean Air Act.

Introduced in the House

Feb. 24, 2026

Introduced by Rep. David Prestin (R-108) and six co-sponsors

Co-sponsored by Reps. Bill Schuette (R-95), Karl Bohnak (R-109), Greg Markkanen (R-110), David Martin (R-68), Cameron Cavitt (R-106) and Angela Rigas (R-79)

Referred to the Committee on Natural Resources and Tourism

April 29, 2026

Reported without amendment

Referred to the Committee on Rules

May 21, 2026

Reported without amendment

June 4, 2026

Passed in the House 58 to 50 (details)

Motion to give immediate effect by Rep. Bryan Posthumus (R-90)

The motion prevailed by voice vote