POLLUTION LOCATOR|Hazardous Air Pollutants | Compare Measured with Estimated HAP Concentrations

County:      SAN DIEGO


HAP
Monitor Station (Year)
Estimated Annual
1996 Average
Concentration
(ug/m3)
Measured Annual Average Concentration (ug/m3)  Estimated/
Measured
Ratio
Measured
 Concentration
Greater Than
Clean Air Act
Goal

1,3-Butadiene

Chula Vista (1996)
0.049 0.29 0.17 yes
Chula Vista (1996)
0.073 0.29 0.25 yes
El Cajon-Redwood Avenue (1996)
0.073 0.39 0.19 yes
Acetaldehyde

Chula Vista (1997)
0.61 1.8 0.34 yes
Chula Vista (1997)
1.0 1.8 0.56 yes
El Cajon-Redwood Avenue (1997)
1.0 2.0 0.51 yes
Benzene

Chula Vista (1996)
1.1 1.6 0.68 yes
Chula Vista (1996)
1.5 1.6 0.92 yes
El Cajon-Redwood Avenue (1996)
1.5 1.9 0.81 yes
Carbon Tetrachloride

Chula Vista (1996)
0.79 0.46 1.7 yes
Chula Vista (1996)
0.99 0.46 2.1 yes
El Cajon-Redwood Avenue (1996)
0.99 0.48 2.1 yes
Chloroform

Chula Vista (1996)
0.073 0.13 0.56 no
Chula Vista (1996)
0.091 0.13 0.70 no
El Cajon-Redwood Avenue (1996)
0.091 0.17 0.54 no
Dichloromethane

Chula Vista (1996)
0.27 2.0 0.14 yes
Chula Vista (1996)
0.56 2.0 0.28 yes
El Cajon-Redwood Avenue (1996)
0.56 2.0 0.28 yes
Formaldehyde

Chula Vista (1997)
1.0 3.2 0.32 yes
Chula Vista (1997)
1.6 3.2 0.49 yes
El Cajon-Redwood Avenue (1997)
1.6 3.7 0.43 yes
Styrene

Chula Vista (1996)
0.068 0.28 0.24 no
Chula Vista (1996)
0.090 0.28 0.32 no
El Cajon-Redwood Avenue (1996)
0.090 0.25 0.36 no
Tetrachloroethylene

Chula Vista (1996)
0.28 0.84 0.33 yes
Chula Vista (1996)
0.35 0.84 0.42 yes
El Cajon-Redwood Avenue (1996)
0.35 0.96 0.37 yes
Toluene

Chula Vista (1996)
3.7 6.6 0.56 no
Chula Vista (1996)
5.1 6.6 0.77 no
El Cajon-Redwood Avenue (1996)
5.1 7.9 0.64 no
Trichloroethylene

Chula Vista (1996)
0.078 0.33 0.24 no
Chula Vista (1996)
0.13 0.33 0.40 no
El Cajon-Redwood Avenue (1996)
0.13 0.11 1.2 no
Xylene (Mixed Isomers)

Chula Vista (1996)
2.3 0.97 2.4 no
Chula Vista (1996)
3.1 0.97 3.2 no
El Cajon-Redwood Avenue (1996)
3.1 1.3 2.4 no