"Drycleaning" means the process of cleaning clothing, garments, textiles, fabrics, leather goods, or other like articles using a nonaqueous solvent.
"Drycleaning machine" means any machine, device, or other equipment used in drycleaning.
"Drycleaning solvents" means solvents used in drycleaning.
"Perchloroethylene drycleaning machine" means a drycleaning machine that uses perchloroethylene.
"Primary control system" means a refrigerated condenser or an equivalent closed-loop vapor recovery system that reduces the concentration of perchloroethylene in the recirculating air of a perchloroethylene drycleaning machine.
"Refrigerated condenser" means a closed-loop vapor recovery system into which perchloroethylene vapors are introduced and trapped by cooling below the dew point of the perchloroethylene.
"Secondary control system" means a device or apparatus that reduces the concentration of perchloroethylene in the recirculating air of a perchloroethylene drycleaning machine at the end of the drying cycle beyond the level achievable with a refrigerated condenser alone.
415 ILCS 5/22.57