; (ii) the conduct of biological monitoring on National Forest System land under the Endangered Species Act of 1973 ( 16 U.S.C. 1531 et seq.) for listed species or candidate species, except as required by law for environmental review of ski area projects; or (iii) the acquisition of land for inclusion in the National Forest System. (6) Savings provisions (A) In general Nothing in this subsection affects the applicability of section 7 of the Act of April 24, 1950 (commonly known as the Granger-Thye Act ) ( 16 U.S.C. 580d ), to ski areas on National Forest System land. (B) Supplemental funding Rental charges retained and expended under this subsection shall supplement (and not supplant) appropriated funding for the operation and maintenance of each covered unit. . (b) Effective date This section (including the amendments made by this section) shall take effect on the date that is 60 days after the date of enactment of this Act. (c) Implementation The Secretary of Agriculture shall not be required to issue regulations or policy guidance to implement this section (including the amendments made by this section).