; (2) offset or limit the release of environmental pollutants to soil or water; or (3) demonstrate other factors that benefit human safety or the environment, as determined by the Administrator. (c) Programmatic level approach to NEPA review Not later than 180 days after the date of enactment of this Act, the Administrator shall examine and integrate programmatic-level approaches to the requirements of the National Environmental Policy Act of 1969 ( 42 U.S.C. 4321 et seq. ) by which the Administrator can— (1) leverage an environmental review for unmanned aircraft operations within a defined geographic region, including within and over commercial sites, industrial sites, or other sites closed or restricted to the public