; and (B) modifying sections 60.112b(a)(3)(ii), 60.115b(d)(1), 60.482–10a(d), 60.562–1(a)(1)(i)(C), 60.662(b), and 60.702(b) of title 40, Code of Federal Regulations (as in effect on the date of enactment of this Act), to ensure that— (i) references to flare standards under those sections refer to the flare standards established under subparagraph (A); and (ii) the flare standards under those sections are, without exception, continuously applied. (5) Natural gas-fired steam boilers Not later than 3 years after the date of enactment of this Act, the Administrator shall promulgate a final rule revising subpart Db of part 60 of title 40, Code of Federal Regulations (as in effect on the date of enactment of this Act), to ensure that boilers or heaters located at an affected covered facility regulated under that subpart may only burn gaseous fuels, not solid fuels or liquid fuels. (6) Monitoring Not later than 2 years after the date of enactment of this Act, the Administrator shall promulgate a final rule revising subparts DDD, NNN, and RRR and other relevant subparts of part 60 of title 40, Code of Federal Regulations (as in effect on the date of enactment of this Act)— (A) to require continuous emissions monitoring of benzene, nitrogen oxides, sulfur dioxide, carbon monoxide, other hazardous air pollutants, and filterable particulate matter for all combustion devices, including during startups, shutdowns, and malfunctions of the facilities regulated by those subparts; (B) to require— (i) accurate and continuous recordkeeping when continuous emissions monitoring is required under subparagraph (A); and (ii) the records required under clause (i) to be made available to the public in real time