POLLUTION LOCATOR|Hazardous Air Pollutants | Source Categories Contributing to Chemical-specific Risks

County:      HARFORD


HAP Sort by Added Cancer Risk (per 1,000,000) Sort by Noncancer Hazard Index Percent Emitted from Point Sources Percent Emitted from Area Sources Percent Emitted from Mobile Sources Percent from Background Levels

DIESEL EMISSIONS 720 0.49 0% 0% 45% 55%
CARBON TETRACHLORIDE 37 0.022 0.00051% 0.033% 0% 100%
BENZENE 36 0.021 0.16% 4.4% 56% 39%
POLYCYCLIC ORGANIC MATTER (POM) 8.6 -- 0.00077% 99% 1.0% 0%
1,3-BUTADIENE 8.4 0.0025 0.0000033% 13% 87% 0%
FORMALDEHYDE 6.8 0.38 0.037% 11% 67% 22%
CHROMIUM 3.7 0.0031 16% 44% 40% 0%
ACETALDEHYDE 1.7 0.070 0.0042% 10% 90% 0%
1,2-DICHLOROETHANE 1.3 0.00015 0.0023% 0.082% 0% 100%
TETRACHLOROETHYLENE 1.2 0.0049 0.050% 28% 0% 72%
1,3-DICHLOROPROPENE (MIXED ISOMERS) 1.1 0.0036 0% 100% 0% 0%
1,2-DIBROMOETHANE 0.55 0.0097 0% 0.012% 0% 100%
CHLOROFORM 0.44 0.00028 0% 2.4% 0% 98%
DICHLOROMETHANE 0.42 0.0011 28% 38% 0% 35%
ETHYLENE OXIDE 0.26 0.000097 0.0000017% 100% 0% 0%
POLYCHLORINATED BIPHENYLS 0.22 0.00032 0% 0.000000023% 0% 100%
TRICHLOROETHYLENE 0.20 0.00017 0.74% 19% 0% 81%
ARSENIC 0.17 0.0017 34% 55% 11% 0%
NICKEL 0.16 0.012 19% 49% 31% 0%
VINYL CHLORIDE 0.12 0.00032 86% 14% 0% 0%
ACRYLONITRILE 0.080 0.00014 0% 100% 0% 0%
CADMIUM 0.079 0.0022 26% 73% 1.1% 0%
HEXACHLOROBENZENE 0.048 0.000031 0% 0.074% 0% 100%
BERYLLIUM 0.020 0.0083 11% 89% 0.43% 0%
LEAD 0.011 0.0064 5.5% 51% 44% 0%
1,1,2,2-TETRACHLOROETHANE 0.0050 0.000000033 0% 100% 0% 0%
QUINOLINE 0.0030 -- 0% 100% 0% 0%
HYDRAZINE 0.0010 0.0000012 11% 89% 0% 0%
1,2-DICHLOROPROPANE 0 0.0000050 0% 100% 0% 0%
STYRENE -- 0.000024 1.8% 3.7% 95% 0%
MANGANESE -- 0.010 3.4% 91% 5.6% 0%
TOLUENE -- 0.0065 2.4% 22% 76% 0%
ACROLEIN -- 1.6 0.0077% 26% 74% 0%
MERCURY -- 0.0015 38% 47% 15% 0%
XYLENE (MIXED ISOMERS) -- 0.0019 1.9% 15% 70% 13%
METHYL TERT-BUTYL ETHER -- 0.00011 0.11% 3.6% 96% 0%
ETHYLBENZENE -- 0.00015 1.9% 15% 83% 0%
N-HEXANE -- 0.000061 1.8% 53% 46% 0%

See the 1996 emissions data EPA used to estimate exposures from these source categories