Table 1 Distributional characteristics of hazardous air pollutants (μg/m 3 ) based on the 1999 U.S. EPA ASPEN Model, Texas
Pollutant | Mean | Median | 5thpercentile | 25thpercentile | 75thpercentile | 95thpercentile |
|---|---|---|---|---|---|---|
Acetaldehyde | 1.50 | 1.45 | 0.62 | 0.86 | 1.93 | 2.97 |
Acrolein | 0.11 | 0.09 | 0.01 | 0.04 | 0.14 | 0.32 |
Acrylonitrile | 4.08 × 10-03 | 1.80 × 10-04 | 4.18 × 10-06 | 4.00 × 10-05 | 7.80 × 10-04 | 2.41 × 10-02 |
Arsenic compounds | 6.00 × 10-05 | 2.00 × 10-05 | 1.18 × 10-06 | 1.00 × 10-05 | 5.00 × 10-05 | 1.40 × 10-04 |
Benzene | 1.40 | 1.26 | 0.45 | 0.85 | 1.73 | 2.83 |
Beryllium compounds | 1.00 × 10-05 | 1.00 × 10-05 | 4.53 × 10-07 | 2.06 × 10-06 | 1.00 × 10-05 | 2.00 × 10-05 |
1,3-Butadiene | 0.13 | 0.12 | 0.01 | 0.07 | 0.17 | 0.30 |
Cadmium compounds | 1.00 × 10-04 | 2.00 × 10-05 | 8.08 × 10-07 | 4.52 × 10-06 | 5.00 × 10-05 | 2.20 × 10-04 |
Carbon tetrachloride | 0.28 | 0.27 | 0.27 | 0.27 | 0.27 | 0.29 |
Chloroform | 0.08 | 0.07 | 0.04 | 0.05 | 0.09 | 0.16 |
Chromium VI | 3.40 × 10-04 | 7.00 × 10-05 | 2.65 × 10-06 | 2.00 × 10-05 | 2.10 × 10-04 | 1.42 × 10-03 |
1,3-Dichloropropene | 0.08 | 0.07 | 0.01 | 0.04 | 0.11 | 0.17 |
Diesel particulate matter | 1.18 | 0.97 | 0.28 | 0.53 | 1.42 | 2.81 |
Ethylene oxide | 1.19 × 10-02 | 8.25 × 10-03 | 7.80 × 10-04 | 4.35 × 10-03 | 1.42 × 10-02 | 3.38 × 10-02 |
Ethylene dibromide | 2.57 × 10-02 | 2.98 × 10-02 | 4.00 × 10-04 | 1.93 × 10-02 | 3.58 × 10-02 | 3.73 × 10-02 |
Ethylene dichloride | 0.05 | 0.05 | 0.01 | 0.03 | 0.05 | 0.10 |
Formaldehyde | 1.60 | 1.57 | 0.55 | 1.02 | 2.01 | 2.97 |
Hexachlorobenzene | 3.00 × 10-05 | 4.15 × 10-07 | 1.08 × 10-07 | 2.38 × 10-07 | 1.08 × 10-06 | 6.00 × 10-06 |
Hydrazine | 1.00 × 10-05 | 2.74 × 10-09 | 2.88 × 10-15 | 2.31 × 10-10 | 6.14 × 10-08 | 4.00 × 10-05 |
Lead compounds | 2.49 × 10-03 | 1.73 × 10-03 | 7.00 × 10-05 | 4.90 × 10-04 | 3.07 × 10-03 | 7.02 × 10-03 |
Manganese compounds | 1.50 × 10-03 | 6.40 × 10-04 | 1.00 × 10-05 | 1.00 × 10-04 | 1.37 × 10-03 | 4.60 × 10-03 |
Mercury compounds | 1.63 × 10-03 | 1.52 × 10-03 | 1.50 × 10-03 | 1.51 × 10-03 | 1.57 × 10-03 | 1.99 × 10-03 |
Methylene chloride | 0.49 | 0.48 | 0.11 | 0.33 | 0.63 | 0.88 |
Nickel compounds | 7.30 × 10-04 | 4.10 × 10-04 | 2.00 × 10-05 | 1.30 × 10-04 | 8.00 × 10-04 | 2.39 × 10-03 |
Polychlorinated biphenyls | 4.00 × 10-04 | 3.90 × 10-04 | 3.80 × 10-04 | 3.80 × 10-04 | 4.00 × 10-04 | 4.70 × 10-04 |
Perchloroethylene | 0.20 | 0.20 | 0.02 | 0.12 | 0.27 | 0.38 |
Polycyclic Organic Matter | 7.73 × 10-03 | 6.58 × 10-03 | 1.55 × 10-03 | 4.07 × 10-03 | 9.63 × 10-03 | 1.78 × 10-02 |
Propylene Dichloride | 2.15 × 10-02 | 2.42 × 10-02 | 6.64 × 10-03 | 1.80 × 10-02 | 2.77 × 10-02 | 2.80 × 10-02 |
Quinoline | 1.00 × 10-05 | 2.70 × 10-08 | 9.65 × 10-14 | 4.92 × 10-09 | 2.92 × 10-07 | 2.00 × 10-05 |
1,1,2,2-Tetrachloroethane | 0.06 | 0.07 | 0.02 | 0.05 | 0.08 | 0.08 |
Trichloroethylene | 0.10 | 0.09 | 0.05 | 0.07 | 0.11 | 0.16 |
Vinyl chloride | 6.42 × 10-02 | 6.60 × 10-02 | 1.04 × 10-03 | 4.36 × 10-02 | 7.93 × 10-02 | 1.19 × 10-01 |