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	Annual Toxics Summary El Cajon-Lexington Elementary School 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
2025		0.025	0.16	*	0.33	0.49	0.125	14	0.05	*
2024		0.06	0.12	0.169	0.33	0.51	0.113	32	0.05	44
2023		0.07	0.14	*	0.32	0.38	0.099	28	0.05	*
2022		0.025	0.12	0.171	0.25	1.0	0.179	31	0.05	44
2021		0.07	0.12	*	0.25	0.47	0.096	23	0.05	*
2020		0.07	*	*	*	0.45	0.129	9	0.05	*
2019		0.06	0.15	0.184	0.34	0.45	0.108	30	0.05	48
2018		0.09	0.17	0.234	0.44	0.82	0.165	31	0.05	61
2017		0.08	0.21	0.266	0.55	0.77	0.186	30	0.05	69
2016		0.11	0.22	*	0.50	0.54	0.143	13	0.05	*
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	*	*
1999		*	*	*	*	*	*	0	*	*
1998		*	*	*	*	*	*	0	*	*
1997		*	*	*	*	*	*	0	*	*
1996		*	*	*	*	*	*	0	*	*
1995		*	*	*	*	*	*	0	*	*
1994		*	*	*	*	*	*	0	*	*
1993		*	*	*	*	*	*	0	*	*
1992		*	*	*	*	*	*	0	*	*
1991		*	*	*	*	*	*	0	*	*
1990		*	*	*	*	*	*	0	*	*
1989		*	*	*	*	*	*	0	*	*

	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.