(1) Sole source aquifers designated by the U.S. Environmental Protection Agency in accordance with the Safe Drinking Water Act of 1974 (Public Law 93-523);

(2) Areas within the 10-year travel zone of Group A wellhead protection areas, determined in accordance with delineation methodologies specified by the Washington Department of Health under authority of chapter 246-290 WAC; and

(3) Areas of high, medium, and low sensitivity to groundwater contamination, based on depth to groundwater and in accordance with The Ground-Water System and Ground-Water Quality in Western Snohomish County, Washington (United States Geological Survey, Water Resources Investigations, Report #96-4312, 1997). (Added by Amended Ord. 06-061, Aug. 1, 2007, Eff date Oct. 1, 2007).