Chlorine, CAS No. 7782-50-5, is an extremely hazardous substance regulated and listed in 40 C.F.R. § 68.130. As the owner and operator of a stationary source, with respect to the use and storage of ferric chloride and sodium hypochlorite, Respondent has a duty under the General Duty Clause, Section 112(r)(1) of the CAA, to design and maintain a safe facility taking such steps as are necessary to prevent the accidental release of substances listed pursuant to Section 112(r)(3) of the CAA, 42 U.S.C. § 7412(r)(3), or of any other extremely hazardous substances.
Relevant industry standards for the storage, handling and use of sodium hypochlorite and ferric chloride include: