; (C) in clause (iii), by striking , and and inserting ; and ; and (D) in clause (iv), by striking the period at the end and inserting a semicolon; (5) by redesignating subparagraphs (D) through (I) as subparagraphs (F) through (K), respectively; (6) by inserting after the undesignated matter following subparagraph (C) the following: (D) ensure the professional integrity, including scientific integrity, of the discussion and analysis in an environmental document; (E) make use of reliable existing data and resources in carrying out this Act; ; (7) by striking subparagraph (G) (as so redesignated) and inserting the following: (G) consistent with the requirements of this Act, study, develop, and describe technically feasible alternatives in the jurisdiction and authority of the Federal agency; ; and (8) in subparagraph (H) (as so redesignated), by inserting consistent with the requirements of this Act, before recognize . (b) Definitions The National Environmental Policy Act of 1969 is amended by inserting after section 2 ( 42 U.S.C. 4321 ) the following: 3. Definitions In this Act: (1) Alternative The term alternative means an agency action, other than a proposed agency action, that— (A) is technically and economically feasible; (B) is within the jurisdiction of the Federal agency; (C) meets the purpose and need of the proposed agency action