Census Tract Average Lifetime Cancer Risk per Million Carbon Tetrachloride U.S. Highest 100 95 2.9 - 3.8 Percentile " 2 g . 3 9 U.S. Lowest 2 ^" ^-8 County Boundary — Interstate 2005 Estimated Census Tract Average Cancer Risk -New England- Carbon Tetrachloride v>EPA Source: U.S. EPA/ OAQPS 2005 NATA. EPA Region 1- GIS Center Map Tracker ID— 7260. January 21, 2011 ------- |