Available Substances Order a Data CD Toxics Statistics Home Page Data Descriptions Page
California Home ARB: Home Search Site Map Links Software Contact Us AQD: Home
California Air Resources Board

Annual Statewide Toxics Summary		 ARB's ADAM Air Quality Database
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 0.025 0.05 0.23 0.028 459 0.02 0.3
2001
0.01 0.01 0.043 0.06 1.7 0.113 499 0.02 0.5
2000
0.01 0.02 0.058 0.08 2.4 0.155 497 0.02 0.6
1999
0.01 0.01   0.06 5.0 0.307 429 0.02  
1998
0.01 0.01 0.031 0.06 1.3 0.073 520 0.02 0.3
1997
0.01 0.01 0.033 0.07 1.1 0.077 557 0.02 0.4
1996
0.01 0.01 0.034 0.05 2.5 0.119 626 0.02 0.4
1995
0.01 0.01 0.035 0.06 2.4 0.113 616 0.02 0.4
1994
0.01 0.01 0.047 0.06 8.7 0.361 607 0.02 0.5
1993
0.01 0.01 0.036 0.05 0.84 0.067 589 0.02 0.4
1992
0.01 0.03 0.061 0.13 1.3 0.105 598 0.02 0.7
1991
0.01 0.05 0.086 0.17 4.2 0.210 566 0.02 0.9
1990
0.01 0.05 0.115 0.20 11 0.518 570 0.02 1
1989
0.01 0.10 0.183 0.42 2.7 0.270 442 0.02 2
Graph It!
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.