104 STAT. 2542 PUBLIC LAW 101-549—NOV. 15, 1990 sion shall be not later than the date 3 years after the date of enactment of the Clean Air Act Amendments of 1990. " (9) SOURCES LICENSED BY THE NUCLEAR REGULATORY COMMIS- SION. —No standard for radionuclide emissions from any category or subcategory of facilities licensed by the Nuclear Regulatory Commission (or an Agreement State) is required to be promulgated under this section if the Administrator determines, by rule, and after consultation with the Nuclear Regulatory Commission, that the regulatory program established by the Nuclear Regulatory Commission pursuant to the Atomic Energy Act for such category or subcategory provides an ample margin of safety to protect the public health. Nothing in this subsection shall preclude or deny the right of any State or political subdivision thereof to adopt or enforce any standard or limitation respecting emissions of radionuclides which is more stringent than the standard or limitation in effect under section 111 or this section. "(10) EFFECTIVE DATE.— Emission standards or other regulations promulgated under this subsection shall be effective upon promulgation, " (e) SCHEDULE FOR STANDARDS AND REVIEW. — Regulations. "(1) IN GENERAL. —The Administrator shall promulgate regulations establishing emission standards for categories and subcategories of sources initially listed for regulation pursuant to subsection (c)(1) as expeditiously as practicable, assuring that— "(A) emission standards for not less than 40 categories and subcategories (not counting coke oven batteries) shall be promulgated not later than 2 years after the date of enactment of the Clean Air Act Amendments of 1990; "(B) emission standards for coke oven batteries shall be promulgated not later than December 31, 1992; "(C) emission standards for 25 per centum of the listed categories and subcategories shall be promulgated not later than 4 years after the date of enactment of the Clean Air Act Amendments of 1990; "(D) emission standards for an additional 25 per centum of the listed categories and subcategories shall be promulgated not later than 7 years after the date of enactment of the Clean Air Act Amendments of 1990; and "(E) emission standards for all categories and subcategories shall be promulgated not later than 10 years after the date of enactment of the Clean Air Act Amendments of 1990. "(2) In determining priorities for promulgating standards under subsection (d), the Administrator shall consider— "(A) the known or anticipated adverse effects of such pollutants on public health and the environment; "(B) the quantity and location of emissions or reasonably anticipated emissions of hazardous air pollutants that each category or subcategory will emit; and "(C) the efficiency of grouping categories or subcategories according to the pollutants emitted, or the processes or technologies used. "(3) PUBLISHED SCHEDULE. — Not later than 24 months after the date of enactment of the Clean Air Act Amendments of 1990 and after opportunity for comment, the Administrator shall
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