POLLUTION LOCATOR|Hazardous Air Pollutants | 1996 Emissions Data Used to Estimate Exposures

County:      SAN DIEGO


HAP Sorted by Added Cancer Risk (per 1,000,000) Noncancer Hazard Index
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Emissions from Point Sources (tons/yr)
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Emissions from Area Soucres (tons/yr)
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Emissions from Onroad Mobile Sources (tons/yr)
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Emissions from Nonroad Mobile Sources (tons/yr)
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DIESEL EMISSIONS 630 0.420 0 1500 2300
BENZENE 40 0.0231.3 120 710 650
CARBON TETRACHLORIDE 38 0.0221.1 0.085 0 0
POLYCYCLIC ORGANIC MATTER (POM) 18 --0.27 73 0.77 0.098
CHROMIUM 11 0.00930.11 1.2 0.11 0.25
1,3-BUTADIENE 11 0.00310.14 30 120 19
FORMALDEHYDE 8.3 0.462.3 230 620 900
1,3-DICHLOROPROPENE (MIXED ISOMERS) 2.7 0.00830 210 0 0
ACETALDEHYDE 2.4 0.0990.000011 30 170 400
TETRACHLOROETHYLENE 1.9 0.008294 260 0 0
1,2-DICHLOROETHANE 1.4 0.000150.70 0.40 0 0
1,2-DIBROMOETHANE 0.65 0.0123.4 0.0023 0 0
ETHYLENE OXIDE 0.62 0.000240 10 0 0
DICHLOROMETHANE 0.52 0.0013550 440 0 0
NICKEL 0.51 0.0395.8 1.3 0.088 0.19
ACRYLONITRILE 0.49 0.000850 2.7 0 0
CHLOROFORM 0.44 0.000280.76 1.6 0 0
ARSENIC 0.37 0.00371.0 0.13 0.0021 0.0016
TRICHLOROETHYLENE 0.25 0.000213.1 84 0 0
VINYL CHLORIDE 0.25 0.000641.1 5.3 0 0
LEAD 0.082 0.0461.8 0.83 0.16 6.4
CADMIUM 0.065 0.00180.094 0.042 0 0.00021
1,1,2,2-TETRACHLOROETHANE 0.054 0.000000340 1.5 0 0
HEXACHLOROBENZENE 0.048 0.0000320 0.000043 0 0
BERYLLIUM 0.043 0.0180.059 0.020 0 0.000015
1,2-DICHLOROPROPANE 0.0020 0.0000260 0.16 0 0
QUINOLINE 0.0010 --0 0.00033 0 0
HYDRAZINE 0 0.000000370 0.00058 0 0
MERCURY -- 0.000970.58 0.073 0.0016 0.066
MANGANESE -- 0.04515 5.8 0.048 0.28
ACROLEIN -- 2.10 46 49 73

NOTE: The National-Scale Air Toxics Assessment (NATA) provides only aggregate data on 1996 point source releases in an area. To help identify sepcific companies which may be responsible for these releases, Scorecard disaggregates summary point source data to facility-level data based on the 2002 Toxics Releases Inventory (TRI). NATA and TRI data for an area often differ, because they involve different reporting years (1996 vs. 2002) and aggregation methods (NATA often includes point source emissions from outside geopolitical boundaries, since these can impact estimated exposures in an area).