“EIS” or “environmental impact statement” means a document prepared to assess the environmental impacts of a proposal which has been judged to have, or likely to have, a significant adverse effect upon the quality of the environment pursuant to the State Environmental Policy Act of 1971 (Chapter 43.21C RCW), as now constituted or hereafter amended. (Ord. 6239 § 1, 2009; Ord. 4296 § 2, 1988.)