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California Air Resources Board

Annual Toxics Summary		 ARB's ADAM Air Quality Database
Roseville-N Sunrise Blvd
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 0.016 0.02 0.10 0.020 30 0.02 0.2
2001
0.01 0.01 0.011 0.01 0.03 0.004 29 0.02 0.1
2000
0.01 0.01 0.014 0.02 0.04 0.009 28 0.02 0.2
1999
0.01 0.01   0.01 0.02 0.003 19 0.02  
1998
0.01 0.01   0.01 0.01 0.000 16 0.02  
1997
0.01 0.01 0.011 0.01 0.03 0.005 29 0.02 0.1
1996
0.01 0.01 0.020 0.03 0.24 0.042 30 0.02 0.2
1995
0.01 0.02 0.022 0.03 0.04 0.010 30 0.02 0.2
1994
0.01 0.01 0.014 0.03 0.05 0.010 31 0.02 0.1
1993
0.01 0.01   0.01 0.01 0.000 21 0.02  
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.