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California Air Resources Board

Annual Toxics Summary		 ARB's ADAM Air Quality Database
Burbank-W Palm Avenue
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 0.03 0.048 0.09 0.23 0.045 31 0.02 0.5
2001
0.01 0.04 0.048 0.08 0.17 0.035 30 0.02 0.5
2000
0.01 0.04 0.049 0.09 0.19 0.037 29 0.02 0.5
1999
0.01 0.04   0.10 0.13 0.037 23 0.02  
1998
0.01 0.03 0.043 0.07 0.29 0.053 29 0.02 0.5
1997
0.01 0.02 0.028 0.07 0.09 0.026 29 0.02 0.3
1996
0.01 0.03 0.049 0.06 0.53 0.091 30 0.02 0.5
1995
0.01 0.05 0.052 0.09 0.10 0.022 31 0.02 0.6
1994
0.01 0.07 0.078 0.14 0.24 0.057 28 0.02 0.8
1993
0.01 0.05 0.061 0.09 0.28 0.048 32 0.02 0.7
1992
0.01 0.10 0.096 0.13 0.15 0.035 30 0.02 1
1991
0.06 0.14 0.260 0.20 4.2 0.754 29 0.02 3
1990
0.08 0.26 0.250 0.40 0.47 0.114 30 0.02 3
1989
0.06 0.25   0.43 0.55 0.159 12 0.02  
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.