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	Annual Toxics Summary Modesto-14th Street 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
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		0.3	*	*	*	1.6	0.48	5	0.2	*
1999		0.1	0.4	0.61	1.5	1.8	0.48	31	0.2	158
1998		0.1	0.6	0.85	2.0	3.5	0.81	31	0.2	220
1997		0.1	0.5	0.77	1.3	2.8	0.62	29	0.2	199
1996		0.25	0.25	0.70	1.3	3.0	0.67	31	0.5	183
1995		0.25	1.1	1.20	2.6	3.5	0.98	30	0.5	311
1994		0.25	1.0	1.14	2.2	2.9	0.78	31	0.5	296
1993		0.25	1.0	1.23	2.3	4.7	1.18	30	0.5	321
1992		0.25	1.0	1.20	2.4	4.0	0.93	31	0.5	313
1991		0.25	1.1	1.86	4.5	5.8	1.68	30	0.5	483
1990		0.25	1.7	2.25	4.1	5.5	1.42	31	0.5	584
1989		0.8	2.0	2.41	4.2	5.4	1.34	24	0.5	628

	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.