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	Annual Toxics Summary Santa Barbara-W Carillo Street FAQs 1,3-Butadiene 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	*	*
2024		*	*	*	*	*	*	0	*	*
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		0.08	*	*	*	0.43	0.143	5	0.04	*
1999		0.04	0.13	0.241	0.52	0.62	0.188	30	0.04	260
1998		0.08	0.22	0.270	0.54	0.83	0.182	30	0.04	292
1997		0.07	0.24	0.298	0.54	0.93	0.196	30	0.04	323
1996		0.10	0.22	0.271	0.50	0.84	0.183	30	0.04	293
1995		0.15	0.22	0.303	0.57	0.88	0.177	29	0.04	328
1994		0.13	0.23	0.344	0.68	0.93	0.229	30	0.04	372
1993		0.10	0.29	0.386	0.70	0.97	0.249	31	0.04	417
1992		0.10	0.29	0.339	0.79	1.1	0.274	28	0.04	366
1991		0.08	0.20	0.336	0.89	1.1	0.314	34	0.04	363
1990		0.10	0.36	0.474	0.95	1.5	0.355	27	0.04	512
1989		0.02	0.30	0.428	0.83	1.2	0.314	21	0.04	463

	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.