Determination of NEPA Adequacy Streamlining Act

HR 6163, the *Determination of NEPA Adequacy Streamlining Act*, streamlines federal environmental reviews under the National Environmental Policy Act (NEPA) by allowing agencies to reuse prior environmental assessments (EAs) or environmental impact statements (EISs). It permits federal agencies to rely on previously completed EAs or EISs for new projects that are "substantially the same" as past actions, provided the environmental effects are comparable. If a project differs significantly, agencies may modify existing documents instead of creating new ones, with the updated version made publicly available. This primarily affects federal agencies conducting environmental reviews for major projects, reducing redundant assessments while maintaining environmental review requirements. The bill does not alter environmental standards but changes how agencies fulfill NEPA obligations.