Sites with zinc data available Available Substances Toxics Statistics Home Page Data Descriptions Page
California Home ARB: Home Search Site Map Contact Us
California Air Resources Board

Annual Toxics Summary
ARB's ADAM Air Quality Database
Concord-2975 Treat Blvd FAQs
Zinc
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
7 * * * 75 28.7 4 2
1999
15 27 33.3 56 100 18.4 27 2
1998
3 28 * 72 100 25.9 19 2
1997
16 35 * 82 160 35.6 22 2
1996
8 22 28.9 48 170 32.5 26 2
1995
8 35 41.1 69 160 30.6 27 2
1994
18 31 36.3 69 130 24.8 29 2
1993
7 23 33.6 61 76 19.3 27 2
1992
9 26 * 36 76 16.8 22 2
1991
9 23 34.1 70 90 23.5 27 2
1990
5 24 * 72 74 22.6 16 2
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.