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California Air Resources Board

Annual Toxics Summary		 ARB's ADAM Air Quality Database
Bakersfield-5558 California Avenue
Chloroform
parts per billion
Year Months
Present		 Minimum Median Mean 90th
Percentile		 Maximum Standard
Deviation		 Number of
Observations		 Detection
Limit		 Estimated
Risk
2002
0.01 0.03 0.032 0.05 0.07 0.014 30 0.02 0.8
2001
0.01 0.03 0.034 0.05 0.08 0.015 31 0.02 0.9
2000
0.01 0.03 0.030 0.04 0.06 0.012 30 0.02 0.8
1999
0.01 0.03 0.030 0.06 0.07 0.019 26 0.02 0.8
1998
0.01 0.03   0.04 0.05 0.012 27 0.02  
1997
0.01 0.03 0.030 0.04 0.16 0.026 31 0.02 0.8
1996
0.01 0.03 0.033 0.06 0.08 0.018 32 0.02 0.9
1995
0.01 0.03 0.029 0.05 0.14 0.027 32 0.02 0.7
1994
0.01 0.03   0.05 0.10 0.022 22 0.02  
1993
            0    
1992
            0    
1991
            0    
1990
            0    
1989
            0    
Notes:  Values below the Limit of Detection (LoD) assumed to be ½ LoD.
Means and risks shown only for years with data in all 12 months.
Risks shown only for those substances with unit risk factors.