1. Environmental review relating to unmanned aircraft systems (a) Guidance updates Not later than 180 days after the date of enactment of this Act, the Administrator of the Federal Aviation Administration shall publish unmanned aircraft system-specific guidance and implementation procedures. Such guidance and implementation procedures shall— (1) provide guidance to streamline environmental assessments at a programmatic level, as the Administrator considers appropriate, for an unmanned aircraft system operator’s network of operations within a defined geographical region, including within and over approved commercial or industrial sites closed or restricted to the public; (2) provide guidance for nationwide programmatic approaches for large scale distributed unmanned aircraft system operations whereby a Programmatic Environmental Assessment or Environmental Impact Statement can be leveraged for subsequent related actions to ensure efficient environmental review; (3) consider additional Categorical Exclusions based on previously prepared and finalized Environmental Assessments or in consultation with the Council on Environmental Quality; (4) prioritize proposed projects or activities that can be shown to— (A) offset or limit the impacts of non-zero emission activities; (B) offset or limit the release of environmental pollutants to soil or water; or (C) contain other factors to the benefit of the environment as determined by the Administrator; (5) contain intra-agency process improvements to avoid providing conflicting safety and environmental feedback to operators; (6) contain standards and criteria for engaging specialized third parties to support the Administration’s preparation and review of documentation relating to the requirements of the National Environmental Policy Act of 1969 ( 42 U.S.C. 4321 et seq. ) to ensure streamlined timelines for complex reviews