MI HB5975

Requires oil and gas operators to test air for baseline levels of relevant gases (hydrogen sulfide, volatile organic compounds, and other health-risk gases) before constructing wells or compressor stations.

Mandates daily air testing once wells are in production or compressor stations are operating, with results reported to the supervisor within 30 days initially, then quarterly or annually if no leaks are detected.

Defines a "leak" as emissions above minimal risk levels set by the Agency for Toxic Substances and Disease Registry, or 500 parts per million for methane if no federal standard exists.

Requires operators to eliminate detected leaks within 15 days and imposes escalating penalties: $25,000 fine for first violation, $75,000 for second violation within 5 years, and permit revocation for a third violation within 5 years.

Directs the supervisor to promulgate rules within 6 months based on EPA's Control Techniques Guidelines, addressing testing methods (including Method 21 for volatile organic compounds), reporting procedures, wind speed limits, component testing, and inspection schedules.