; (B) the maximum production level permitted for the applicable regulated substances in the transfer year under applicable law, less the production allowances transferred; and (C) the average of the actual national production level of the applicable regulated substances for the 3-year period ending on the date of the transfer, less the production allowances transferred; or (2) from a person in a foreign country if, at the time of the trade or transfer, the Administrator finds that the foreign country has revised the domestic production limits of the regulated substance in the same manner as provided with respect to transfers by a person in United States under this section. (c) Effect of transfers on production limits The Administrator may— (1) reduce the production limits established under section 6(b)(2) as required as a prerequisite to a transfer described in subsection (b)(1); or (2) increase the production limits established under section 6(b)(2) to reflect production allowances acquired under a trade or transfer described in subsection (b)(2). (d) Regulations The Administrator shall— (1) not later than 1 year after the date of enactment of this Act, promulgate a final rule to carry out this section