"Material recovery section" means, with respect to manufacture of polystyrene resin, any equipment designed to transport and recover styrene monomer and other impurities from other products and by-products in a polystyrene plant, including but not limited to the styrene devolatizer unit and styrene recovery unit.
Ill. Admin. Code tit. 35, § 211.3670
Added at 17 Ill. Reg. 16504, effective September 27, 1993