Vent pipe outlets for hazardous substances, as defined by part 5206.0100, subpart 7, under pressure, including ammonia and refrigerant compressor systems, shall be so located that the discharge is released at a point outside of the building where it will not reenter the building or work area.
Minn. R. agency 151, ch. 5205, GENERAL ENVIRONMENTAL CONTROLS, pt. 5205.0105
Statutory Authority: MS s 182.655