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	Annual Toxics Summary Rosarito FAQs Methylene Chloride 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	*	*
2013		*	*	*	*	*	*	0	*	*
2012		*	*	*	*	*	*	0	*	*
2011		*	*	*	*	*	*	0	*	*
2010		0.05	0.11	*	0.19	0.23	0.062	13	0.1	*
2009		0.05	0.05	*	0.22	0.42	0.106	14	0.1	*
2008		0.05	*	*	*	0.2	0.052	7	0.1	*
2007		0.05	*	*	*	0.22	0.064	10	0.1	*
2006		0.05	0.05	*	0.22	0.29	0.08	15	0.1	*
2005		0.05	0.11	0.107	0.16	0.26	0.061	28	0.1	1
2004		0.05	0.05	0.083	0.15	0.19	0.048	29	0.1	0.8
2003		0.05	0.05	0.267	0.3	3.7	0.661	30	0.1	3
2002		0.05	0.05	*	0.18	0.21	0.055	27	0.1	*
2001		0.05	0.05	*	0.26	0.5	0.13	24	0.1	*
2000		0.5	0.5	*	0.5	0.5	0.00	19	1.0	*
1999		0.5	0.5	0.50	0.5	0.5	0.00	26	1.0	5
1998		0.5	0.5	*	0.5	3.8	0.66	25	1.0	*
1997		0.5	0.5	*	0.5	2.9	0.51	22	1.0	*
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.