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California Air Resources Board

Annual Toxics Summary		 ARB's ADAM Air Quality Database
Fresno-1st Street
Trichloroethylene
parts per billion
Year Months
Present		 Minimum Median Mean 90th
Percentile		 Maximum Standard
Deviation		 Number of
Observations		 Detection
Limit		 Estimated
Risk
2002
0.01 0.01 0.013 0.02 0.04 0.007 31 0.02 0.1
2001
0.01 0.01 0.012 0.01 0.04 0.007 30 0.02 0.1
2000
0.01 0.01 0.021 0.04 0.07 0.016 30 0.02 0.2
1999
0.01 0.01   0.04 0.08 0.019 19 0.02  
1998
0.01 0.01   0.04 0.07 0.018 15 0.02  
1997
0.01 0.01 0.016 0.01 0.16 0.028 29 0.02 0.2
1996
0.01 0.01 0.013 0.02 0.06 0.011 31 0.02 0.1
1995
0.01 0.01 0.013 0.02 0.03 0.006 30 0.02 0.1
1994
0.01 0.01 0.014 0.01 0.08 0.013 31 0.02 0.2
1993
0.01 0.01 0.014 0.03 0.07 0.013 30 0.02 0.2
1992
0.01 0.04 0.041 0.06 0.13 0.023 30 0.02 0.4
1991
0.01 0.03 0.031 0.05 0.09 0.019 29 0.02 0.3
1990
0.01 0.07   0.13 0.21 0.050 24 0.02  
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.