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

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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 230 0.16 0% 0% 54% 46%
CARBON TETRACHLORIDE 36 0.021 0% 0.0025% 0% 100%
BENZENE 17 0.0096 0.00024% 1.6% 16% 82%
FORMALDEHYDE 2.0 0.11 0.000078% 3.4% 24% 73%
1,3-BUTADIENE 1.7 0.00049 0% 4.4% 96% 0%
POLYCYCLIC ORGANIC MATTER (POM) 1.4 -- 0.00015% 99% 1.1% 0%
1,2-DICHLOROETHANE 1.3 0.00015 0.000072% 0.015% 0% 100%
TETRACHLOROETHYLENE 0.88 0.0037 0.000029% 8.1% 0% 92%
CHROMIUM 0.54 0.00045 0.56% 71% 28% 0%
1,2-DIBROMOETHANE 0.53 0.0094 0% 0.00062% 0% 100%
CHLOROFORM 0.41 0.00026 0% 0.18% 0% 100%
POLYCHLORINATED BIPHENYLS 0.21 0.00031 0% 0% 0% 100%
1,3-DICHLOROPROPENE (MIXED ISOMERS) 0.19 0.00061 0% 100% 0% 0%
ACETALDEHYDE 0.18 0.0072 0.00080% 11% 89% 0%
DICHLOROMETHANE 0.17 0.00042 0.00017% 12% 0% 88%
TRICHLOROETHYLENE 0.16 0.00013 0% 2.9% 0% 97%
ETHYLENE OXIDE 0.049 0.000019 0% 100% 0% 0%
HEXACHLOROBENZENE 0.046 0.000030 0% 0.43% 0% 100%
NICKEL 0.035 0.0027 0.20% 94% 5.9% 0%
ARSENIC 0.023 0.00023 5.6% 93% 1.4% 0%
ACRYLONITRILE 0.014 0.000023 0% 100% 0% 0%
CADMIUM 0.0050 0.00013 2.0% 98% 0% 0%
VINYL CHLORIDE 0.0040 0.000011 0% 100% 0% 0%
BERYLLIUM 0.0030 0.0014 1.5% 99% 0% 0%
LEAD 0.0020 0.0013 0.21% 54% 46% 0%