49 U.S.C. § 304a
(a) In General.— In preparing a final environmental impact statement under the National Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.), if the lead agency modifies the statement in response to comments that are minor and are confined to factual corrections or explanations of why the comments do not warrant additional agency response, the lead agency may write on errata sheets attached to the statement, instead of rewriting the draft statement, subject to the condition that the errata sheets—
(b) Single Document.— To the maximum extent practicable, the lead agency shall expeditiously develop a single document that consists of a final environmental impact statement and a record of decision, unless—
(c) Adoption and Incorporation by Reference of Documents.—
(2) Adoption of documents of other operating administrations.— An operating administration or a secretarial office within the Department of Transportation may adopt a draft environmental impact statement, an environmental assessment, or a final environmental impact statement of another operating administration for the use of the adopting operating administration when preparing an environmental assessment or final environmental impact statement for a project without recirculating the document for public review, if—
(3) Incorporation by reference.— An operating administration or secretarial office within the Department of Transportation may incorporate by reference all or portions of a draft environmental impact statement, an environmental assessment, or a final environmental impact statement for the use of the adopting operating administration when preparing an environmental assessment or final environmental impact statement for a project if—
(Added Pub. L. 114–94, div. A, title I, § 1311(a), , 129 Stat. 1398.)
The National Environmental Policy Act of 1969, referred to in subsecs. (a) and (c)(2)(C), is Pub. L. 91–190, , 83 Stat. 852, which is classified generally to chapter 55 (§ 4321 et seq.) of Title 42, The Public Health and Welfare. For complete classification of this Act to the Code, see Short Title note set out under section 4321 of Title 42 and Tables.
Section effective , see section 1003 of Pub. L. 114–94, set out as an Effective Date of 2015 Amendment note under section 5313 of Title 5, Government Organization and Employees.