In general— The owner or operator of a stationary source described in subsection (b) of this section shall not be required by the regulations promulgated under section 112(r)(7)(B) of the Clean Air Act (
42 U.S.C. 7412(r)(7)(B)) to include in any hazard assessment under clause (ii) of such section 112(r)(7)(B) an assessment of safer technology and alternative risk management measures with respect to the use of hydrofluoric acid in an alkylation unit.