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	Annual Toxics Summary San Jose-Jackson 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		0.05	0.09	*	0.19	0.41	0.100	20	0.05	*
2022		0.025	0.10	0.171	0.46	0.54	0.167	30	0.05	44
2021		0.025	0.10	*	0.27	0.66	0.135	22	0.05	*
2020		0.09	*	*	*	0.62	0.161	9	0.05	*
2019		0.025	0.12	0.189	0.47	0.86	0.191	30	0.05	49
2018		0.06	0.18	0.283	0.50	1.8	0.365	31	0.05	74
2017		0.08	0.21	0.320	0.54	1.7	0.341	28	0.05	83
2016		0.06	0.19	0.242	0.45	1.0	0.189	31	0.05	63
2015		0.05	0.19	0.292	0.62	1.0	0.242	30	0.05	76
2014		0.05	0.19	0.262	0.54	0.89	0.206	29	0.05	68
2013		0.06	0.27	0.332	0.92	1.0	0.291	31	0.05	86
2012		0.10	0.18	0.264	0.55	1.0	0.224	29	0.05	69
2011		0.07	0.19	0.320	0.85	1.1	0.298	32	0.05	83
2010		0.07	0.24	0.305	0.62	1.0	0.244	30	0.05	79
2009		0.07	0.23	0.332	0.65	1.2	0.258	30	0.05	86
2008		0.11	0.19	0.294	0.60	1.0	0.240	31	0.05	76
2007		0.09	0.23	0.353	0.93	1.5	0.373	30	0.05	92
2006		0.10	0.26	0.383	0.76	1.5	0.335	30	0.05	100
2005		0.11	0.26	0.414	1.0	2.0	0.429	31	0.05	108
2004		0.07	0.30	0.502	1.13	1.8	0.467	30	0.05	131
2003		0.15	0.33	0.577	1.1	2.2	0.536	31	0.05	150
2002		0.23	*	*	*	1.6	0.505	6	0.05	*
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.