Respondent owned and operated a chemical plant where regulated substances and other extremely hazardous substances are produced, processed, stored, and handled, and from which an accidental release could occur. Within the Facility, at the time of the incidents described herein, Respondent used and produced butadiene, chlorine, pentane, sodium hydroxide, hydrochloric acid, toluene, 1 ,4-dichloro-2-butene, 3,4-dichloro-1 butene, chloroprene monomer, resin, and neoprene rubber. On June 11th and 17th, 2015 the facility had two (2) toluene releases.