; and (B) the calendar year in which this Act is enacted and each subsequent calendar year, if required by the Administrator in a regulation adding a substance to the list of regulated substances. (d) Coordination To the extent consistent with subsections (a) through (c), the Administrator may, by regulation, allow any person subject to the requirements of subsection (a)(1) to combine and include the information required to be reported under that subsection with any other related information that the person is required to report to the Administrator. (e) Regulations The Administrator shall promulgate regulations to implement this section. Not later than 270 days after the date of enactment of this Act, the Administrator shall promulgate such final regulations as may be necessary pursuant to the preceding sentence. 5. Phasedown of regulated substances (a) Baselines (1) Production baseline The baseline for the phasedown of the production of regulated substances shall be the sum of— (A) the sum of the products of— (i) the average annual production in the United States of each regulated substance during the 3-year period of calendar years 2011, 2012, and 2013; multiplied by (ii) the respective exchange value of each regulated substance; (B) an amount equal to 15 percent of the sum of the products of— (i) the average production in the United States of each hy­dro­chlo­ro­fluo­ro­car­bon in 1989; multiplied by (ii) the respective exchange value of each such hydrochlorofluorocarbon; and (C) an amount equal to 0.42 percent of the sum of the products of— (i) the average production in the United States of each chlorofluorocarbon in 1989