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Annual Toxics Summary
ARB's ADAM Air Quality Database
Concord-2975 Treat Blvd FAQs
Benzene
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
2022
* * * * * * 0 * *
2021
* * * * * * 0 * *
2020
* * * * * * 0 * *
2019
* * * * * * 0 * *
2018
* * * * * * 0 * *
2017
* * * * * * 0 * *
2016
* * * * * * 0 * *
2015
* * * * * * 0 * *
2014
* * * * * * 0 * *
2013
* * * * * * 0 * *
2012
* * * * * * 0 * *
2011
* * * * * * 0 * *
2010
* * * * * * 0 * *
2009
* * * * * * 0 * *
2008
* * * * * * 0 * *
2007
* * * * * * 0 * *
2006
* * * * * * 0 * *
2005
* * * * * * 0 * *
2004
* * * * * * 0 * *
2003
* * * * * * 0 * *
2002
* * * * * * 0 * *
2001
* * * * * * 0 * *
2000
0.3 * * * 1.4 0.43 5 0.2 *
1999
0.1 0.5 0.57 1.3 1.7 0.41 30 0.2 149
1998
0.1 0.5 0.57 1.4 1.7 0.50 31 0.2 149
1997
0.1 0.5 0.56 1.2 1.9 0.47 30 0.2 146
1996
0.25 0.25 0.48 1.4 1.8 0.47 32 0.5 124
1995
0.25 1.3 1.09 2.0 3.6 0.84 30 0.5 284
1994
0.25 0.9 1.08 2.0 3.6 0.82 32 0.5 280
1993
0.25 0.9 1.13 2.8 3.1 1.03 30 0.5 295
1992
0.25 1.2 1.41 2.8 4.8 1.11 31 0.5 366
1991
0.25 1.0 1.58 3.5 4.9 1.36 29 0.5 412
1990
0.25 1.5 1.84 3.6 4.3 1.26 28 0.5 479
1989
0.25 1.8 2.14 4.1 4.8 1.46 23 0.5 558
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.