49 U.S.C. § 304a: Accelerated decisionmaking in environmental reviews

cite the sources, authorities, and reasons that support the position of the agency; and if appropriate, indicate the circumstances that would trigger agency reappraisal or further response. the final environmental impact statement makes substantial changes to the proposed action that are relevant to environmental or safety concerns; or there is a significant new circumstance or information relevant to environmental concerns that bears on the proposed action or the impacts of the proposed action. To prevent duplication of analyses and support expeditious and efficient decisions, the operating administrations of the Department of Transportation shall use adoption and incorporation by reference in accordance with this subsection. the adopting operating administration certifies that the proposed action is substantially the same as the project considered in the document to be adopted; the other operating administration concurs with such decision; and such actions are consistent with the requirements of the National Environmental Policy Act of 1969 ( 42 U.S.C. 4321 et seq.). the incorporated material is cited in the environmental assessment or final environmental impact statement and the contents of the incorporated material are briefly described; the incorporated material is reasonably available for inspection by potentially interested persons within the time allowed for review and comment; and the incorporated material does not include proprietary data that is not available for review and comment.