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	Annual Toxics Summary El Cajon-Redwood Avenue FAQs Trichloroethylene 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		0.01	0.01	0.010	0.01	0.01	0.000	30	0.02	0.3
2012		0.01	0.01	0.011	0.01	0.03	0.003	30	0.02	0.3
2011		0.01	0.01	0.010	0.01	0.01	0.000	31	0.02	0.3
2010		0.01	0.01	0.011	0.01	0.02	0.002	30	0.02	0.3
2009		0.01	0.01	0.010	0.01	0.01	0.000	31	0.02	0.3
2008		0.01	0.01	0.011	0.01	0.02	0.003	30	0.02	0.3
2007		0.01	0.01	0.019	0.03	0.12	0.022	28	0.02	0.6
2006		0.01	0.01	0.014	0.03	0.04	0.009	32	0.02	0.4
2005		0.01	0.01	0.020	0.03	0.07	0.015	28	0.02	0.6
2004		0.01	0.01	0.016	0.03	0.05	0.011	30	0.02	0.5
2003		0.01	0.01	0.022	0.04	0.09	0.018	30	0.02	0.7
2002		0.01	0.02	0.021	0.03	0.07	0.013	29	0.02	0.6
2001		0.01	0.01	0.019	0.03	0.08	0.015	30	0.02	0.6
2000		0.01	0.02	0.143	0.08	2.4	0.466	28	0.02	4
1999		0.01	0.02	*	0.04	0.19	0.039	23	0.02	*
1998		0.01	0.01	*	0.03	0.04	0.010	21	0.02	*
1997		0.01	0.01	0.021	0.04	0.14	0.027	26	0.02	0.6
1996		0.01	0.01	0.024	0.03	0.08	0.015	30	0.02	0.7
1995		0.01	0.04	0.040	0.07	0.10	0.026	29	0.02	1
1994		0.01	0.01	*	0.07	1.7	0.323	27	0.02	*
1993		0.01	0.03	0.046	0.06	0.24	0.051	28	0.02	1
1992		0.01	0.04	0.054	0.10	0.16	0.039	29	0.02	2
1991		0.01	0.04	0.047	0.07	0.32	0.056	29	0.02	1
1990		0.01	0.04	0.057	0.08	0.27	0.048	30	0.02	2
1989		0.02	0.06	0.113	0.17	1.1	0.216	24	0.02	3

	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.