Rule 2491. If a well or its associated surface facilities produce hydrogen sulfide and the supervisor of mineral wells or authorized representative of the supervisor of mineral wells receives 1 or more complaints of odor regarding the facility, then the supervisor may require the permittee of a well to demonstrate that the concentration of hydrogen sulfide at the location of a complaint is less than 0.2 ppm for a 1 hour time-weighted average, using a method acceptable to the supervisor.
Mich. Admin. Code R. 299.2491