HB4257

Environmental protection: solid waste; anaerobic digestion and digestate; define. Amends secs. 11502 & 11503 of 1994 PA 451 (MCL 324.11502 & 324.11503). TIE BAR WITH: HB 4265'25

Chamber Passed·6/12/25

Michigan HB4257 amends definitions related to solid waste management, including anaerobic digestion, digestate, and beneficial uses of coal ash and.

Michigan HB4257 amends sections 11502 and 11503 of the Michigan Environmental Protection Act to redefine several terms related to solid waste management. It introduces definitions for "anaerobic digestion" and "anaerobic digester digestate," clarifying the processes and products involved in breaking down biodegradable material without oxygen. The bill also updates definitions for beneficial uses of coal ash and other materials, specifying conditions under which these materials can be used in construction and other applications.

Included in complete analysis

  • Overview
  • Core Provisions
  • Implementation
  • Impact
  • Legal Framework
  • Critical Issues

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Where it stands

Last
Passed the House · 62–35 · Jun 12, 2025
Current
Energy And Environment Committee
Next
Senate floor vote

Sponsors

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5
23
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Democratic CaucusRepublican Caucus

Roll Call Votes

62 Yea

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35 Nay

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Calendar

Jun 5, 2025

10:30 AM

House Agriculture

May 15, 2025

10:30 AM

House Agriculture

History

Jun 17, 2025

Senate

Passed By House With Immediate Effect

Jun 17, 2025

Senate

Referred To Committee On Energy And Environment

Jun 12, 2025

House

Read A Second Time