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	Annual Toxics Summary Burbank-W Palm Avenue 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
2024		*	*	*	*	*	*	0	*	*
2023		*	*	*	*	*	*	0	*	*
2022		*	*	*	*	*	*	0	*	*
2021		*	*	*	*	*	*	0	*	*
2020		*	*	*	*	*	*	0	*	*
2019		*	*	*	*	*	*	0	*	*
2018		*	*	*	*	*	*	0	*	*
2017		*	*	*	*	*	*	0	*	*
2016		*	*	*	*	*	*	0	*	*
2015		*	*	*	*	*	*	0	*	*
2014		0.02	0.02	*	0.18	0.22	0.071	15	0.04	*
2013		0.02	0.05	0.107	0.25	0.45	0.117	29	0.04	115
2012		0.02	0.05	0.074	0.16	0.32	0.067	29	0.04	80
2011		0.05	0.08	0.114	0.24	0.34	0.078	27	0.04	124
2010		0.02	0.09	0.123	0.26	0.38	0.103	29	0.04	133
2009		0.02	0.09	0.139	0.31	0.48	0.120	31	0.04	150
2008		0.02	0.10	0.133	0.32	0.40	0.101	30	0.04	144
2007		0.02	0.10	0.136	0.31	0.49	0.120	29	0.04	147
2006		0.02	0.10	0.169	0.35	0.77	0.169	31	0.04	183
2005		0.02	0.11	0.196	0.46	0.73	0.195	29	0.04	212
2004		0.02	0.16	0.180	0.30	0.48	0.105	31	0.04	195
2003		0.02	0.14	*	0.31	0.79	0.171	26	0.04	*
2002		0.02	0.18	0.283	0.70	1.0	0.261	31	0.04	306
2001		0.10	0.23	0.328	0.56	1.2	0.268	30	0.04	355
2000		0.08	0.27	0.345	0.74	0.93	0.242	29	0.04	373
1999		0.04	0.37	0.483	0.92	1.4	0.352	29	0.04	522
1998		0.08	0.36	0.483	1.02	1.3	0.319	29	0.04	522
1997		0.08	0.39	0.421	0.75	1.1	0.265	30	0.04	455
1996		0.13	0.41	0.512	0.77	2.0	0.350	30	0.04	553
1995		0.10	0.53	0.605	0.96	1.7	0.376	31	0.04	654
1994		0.19	0.67	0.752	1.62	1.9	0.497	29	0.04	813
1993		0.16	0.46	0.749	1.6	2.8	0.632	32	0.04	810
1992		0.13	0.60	0.725	1.31	1.6	0.427	30	0.04	783
1991		0.08	0.43	0.623	1.4	1.7	0.481	29	0.04	673
1990		0.23	0.66	0.782	1.6	1.7	0.478	31	0.04	845
1989		0.19	0.63	*	1.74	2.0	0.572	13	0.04	*

	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.