2002 Estimated County • Average Ambient Air Concentration -New England- Polycyclic Organic Matter (POM) Distribution of U.S. Ambient Air Concentration (micrograms per cubic meter) POM ug/m 3.22e-002 - 6.07e-001 1.60e-002-3.20e-002 9.08e-003-1.60e-002 5.12e-003-9.08e-003 2.43e-003-5.12e-003 2.006-005 - 2.426-003 Interstate N 50 Miles urce: U.S. EPA/ OAQPS 2002 NATA Final. EPA Region 1- CIS Center Map Tracker ID= 6208 ------- |