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Annual Toxics Summary		 ARB's ADAM Air Quality Database
Simi Valley-Cochran Street FAQs
Chloroform
parts per billion
Read About Estimated Risk
Year Months
Present		 Minimum Median Mean 90th
Percentile		 Maximum Standard
Deviation		 Number of
Observations		 Detection
Limit		 Estimated
Risk
2023
* * * * * * 0 * *
2022
0.01 0.02 * 0.03 0.04 0.009 16 0.02 *
2021
0.01 0.03 * 0.05 0.06 0.012 23 0.02 *
2020
0.01 * * * 0.05 0.010 9 0.02 *
2019
0.01 0.03 0.029 0.05 0.07 0.015 30 0.02 2
2018
0.02 0.04 0.036 0.05 0.07 0.012 31 0.02 3
2017
0.01 0.04 0.037 0.06 0.09 0.016 30 0.02 3
2016
0.01 0.05 0.048 0.08 0.13 0.027 31 0.02 4
2015
0.01 0.04 0.039 0.05 0.08 0.014 28 0.02 3
2014
0.01 0.04 0.037 0.06 0.07 0.017 27 0.02 3
2013
0.01 0.03 * 0.06 0.07 0.014 26 0.02 *
2012
0.01 0.04 * 0.06 0.07 0.016 20 0.02 *
2011
0.01 0.03 0.033 0.05 0.08 0.018 31 0.02 2
2010
0.01 0.03 0.032 0.05 0.07 0.015 30 0.02 2
2009
0.01 0.03 0.033 0.05 0.06 0.015 31 0.02 2
2008
0.01 0.03 0.034 0.06 0.08 0.019 32 0.02 3
2007
0.01 0.03 0.039 0.06 0.08 0.019 31 0.02 3
2006
0.01 0.03 0.036 0.05 0.08 0.017 31 0.02 3
2005
0.01 0.04 0.045 0.07 0.15 0.030 30 0.02 3
2004
0.01 0.04 0.044 0.09 0.11 0.028 31 0.02 3
2003
0.01 0.05 0.046 0.08 0.09 0.021 31 0.02 3
2002
0.02 0.04 0.051 0.07 0.13 0.024 27 0.02 4
2001
0.01 0.04 0.039 0.06 0.08 0.019 27 0.02 3
2000
0.01 0.04 0.046 0.07 0.21 0.038 29 0.02 3
1999
0.02 0.06 * 0.09 0.14 0.032 15 0.02 *
1998
0.01 0.04 * 0.06 0.08 0.018 17 0.02 *
1997
0.01 0.04 0.036 0.06 0.09 0.020 28 0.02 3
1996
0.01 0.05 0.049 0.08 0.11 0.021 30 0.02 4
1995
0.01 0.04 0.043 0.08 0.12 0.027 31 0.02 3
1994
0.01 0.03 0.031 0.05 0.07 0.018 29 0.02 2
1993
0.01 0.03 0.031 0.05 0.07 0.017 28 0.02 2
1992
0.01 0.03 0.031 0.05 0.07 0.018 29 0.02 2
1991
0.01 0.03 0.036 0.06 0.09 0.023 28 0.02 3
1990
0.01 0.03 0.029 0.05 0.06 0.018 29 0.02 2
1989
0.01 0.03 0.030 0.05 0.06 0.016 22 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.
"*" means there was insufficient or no data available to determine the value.