Section R. 408.15280 - Air requirementsRule 5280.
(1) Ventilation shall be provided to supply adequate fresh healthful air to rooms, buildings, and work areas.(2) Employees shall not be exposed to airborne concentration of toxic dusts, fumes, vapors, mists, or gases that exceed the threshold limit values in Occupational Health Standard Part 301 "Air Contaminants for General Industry," as referenced in R 408.15209.Mich. Admin. Code R. 408.15280