Administrative procedure: rules; definition of a rule; exclude cleanup criteria and target detection limits. Amends sec. 7 of 1969 PA 306 (MCL 24.207). TIE BAR WITH: HB 4640'25, HB 4636'25

HB 4638 amends Michigan's Administrative Procedures Act to exclude environmental cleanup criteria and target detection limits from the definition of "rules" requiring formal rulemaking. This specifically affects the Department of Environment, Great Lakes, and Energy (EGLE), as their cleanup standards under the Natural Resources and Environmental Protection Act will no longer need to follow standard rulemaking procedures. The bill adds these environmental standards to an existing list of exclusions in Section 7 of the Administrative Procedures Act. This change streamlines regulatory processes for EGLE's environmental cleanup work without altering the standards themselves.