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

County:      CLARK


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 130 0.090 0% 0% 52% 48%
CARBON TETRACHLORIDE 33 0.020 0% 0.0021% 0% 100%
BENZENE 18 0.010 0.031% 16% 12% 72%
1,3-BUTADIENE 5.4 0.0016 0% 75% 25% 0%
POLYCYCLIC ORGANIC MATTER (POM) 3.8 -- 0.00000027% 100% 0.46% 0%
FORMALDEHYDE 3.3 0.18 0.29% 43% 14% 43%
CHROMIUM 2.5 0.0021 34% 58% 8.2% 0%
1,2-DICHLOROETHANE 1.2 0.00014 0% 0.0053% 0% 100%
ARSENIC 0.90 0.0091 0.65% 99% 0.039% 0%
TETRACHLOROETHYLENE 0.83 0.0035 2.3% 7.6% 0% 90%
1,2-DIBROMOETHANE 0.49 0.0087 0% 0.00021% 0% 100%
CHLOROFORM 0.38 0.00024 0% 0.18% 0% 100%
ACETALDEHYDE 0.31 0.013 0.56% 44% 56% 0%
POLYCHLORINATED BIPHENYLS 0.20 0.00029 0% 0% 0% 100%
1,3-DICHLOROPROPENE (MIXED ISOMERS) 0.18 0.00057 0% 100% 0% 0%
DICHLOROMETHANE 0.16 0.00041 0.00011% 16% 0% 84%
TRICHLOROETHYLENE 0.15 0.00013 0% 4.1% 0% 96%
HEXACHLOROBENZENE 0.043 0.000028 0% 0.16% 0% 100%
ETHYLENE OXIDE 0.036 0.000014 0% 100% 0% 0%
NICKEL 0.033 0.0025 1.1% 91% 8.0% 0%
CADMIUM 0.017 0.00046 5.3% 95% 0% 0%
BERYLLIUM 0.0040 0.0017 3.6% 96% 0% 0%
ACRYLONITRILE 0.0030 0.0000043 0% 100% 0% 0%
LEAD 0.0020 0.0012 11% 76% 13% 0%
VINYL CHLORIDE 0 0.00000093 0% 100% 0% 0%
1,1,2,2-TETRACHLOROETHANE 0 0.00000000061 0% 100% 0% 0%
QUINOLINE 0 -- 0% 100% 0% 0%
HYDRAZINE 0 0.000000026 0% 100% 0% 0%
1,2-DICHLOROPROPANE 0 0.00000012 0% 100% 0% 0%
ETHYLBENZENE -- 0.000023 0.00048% 34% 66% 0%
STYRENE -- 0.0000040 0.00033% 0.98% 99% 0%
ACROLEIN -- 0.95 0% 86% 14% 0%
MERCURY -- 0.00010 2.8% 62% 36% 0%
MANGANESE -- 0.020 2.3% 97% 0.36% 0%
TOLUENE -- 0.0012 1.9% 45% 54% 0%
N-HEXANE -- 0.000010 0.0064% 64% 36% 0%
XYLENE (MIXED ISOMERS) -- 0.00054 0.75% 28% 29% 42%
METHYL TERT-BUTYL ETHER -- 0.0000018 0.0017% 70% 30% 0%

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