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California Air Resources Board

Annual Toxics Summary
ARB's ADAM Air Quality Database
Concord-2975 Treat Blvd FAQs
Aluminum
nanograms per cubic meter
Year Months
Present
Minimum Median Mean 90th
Percentile
Maximum Standard
Deviation
Number of
Observations
Detection
Limit
2023
* * * * * * 0 *
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
66 * * * 830 327 4 5
1999
190 520 711 1200 3600 661 27 5
1998
24 400 * 820 950 267 19 5
1997
190 480 * 760 820 181 22 5
1996
17 390 499 1500 2000 553 26 5
1995
79 520 733 1600 2900 701 27 5
1994
54 660 655 1300 1400 395 29 5
1993
73 530 836 1800 3100 719 27 5
1992
170 620 * 820 950 225 22 5
1991
190 660 859 1500 2600 564 27 5
1990
190 690 * 1700 2300 624 16 5
1989
* * * * * * 0 *
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.