; (ii) by striking only ; (iii) by striking or as offsets and inserting , as offsets ; and (iv) by striking the period at the end and inserting , or as part of a State implementation plan. ; (2) by striking subsection (b); and (3) by redesignating subsection (c) as subsection (b). 783. Expedited environmental review and one Federal decision Section 47171 of title 49, United States Code, is amended— (1) in subsection (a)— (A) in the matter preceding paragraph (1)— (i) by striking develop and ; and (ii) by striking projects at congested airports and all that follows through aviation security projects and inserting projects, terminal development projects, general aviation airport construction or improvement projects, and aviation safety projects ; and (B) in paragraph (1) by striking better and inserting streamlined ; (2) by striking subsection (b) and inserting the following: (b) Aviation projects subject to a streamlined environmental review process (1) In general Any airport capacity enhancement project, terminal development project, or general aviation airport construction or improvement project shall be subject to the coordinated and expedited environmental review process requirements set forth in this section. (2) Project designation criteria (A) In general The Secretary may designate an aviation safety project for priority environmental review. (B) Requirements A designated project shall be subject to the coordinated and expedited environmental review process requirements set forth in this section. (C) Guidelines (i) In general The Secretary shall establish guidelines for the designation of an aviation safety project or aviation security project for priority environmental review. (ii) Consideration Guidelines established under clause (i) shall provide for consideration of— (I) the importance or urgency of the project; (II) the potential for undertaking the environmental review under existing emergency procedures under the National Environmental Policy Act of 1969 ( 42 U.S.C. 4321 et seq. )