significant impact. (6) Environmental impact statement The term environmental impact statement means a detailed written statement that is required by section 102(2)(C). (7) Finding of no significant impact The term finding of no significant impact means a determination by a Federal agency that a proposed agency action does not require the issuance of an environmental impact statement. (8) Involved Federal agency The term involved Federal agency means an agency that, with respect to a proposed agency action— (A) proposed such action