Methylene Chloride			
County	Air Basin	tons/year	Percent
Los Angeles	South Coast	2675	33%
Santa Clara	San Francisco Bay Area	978	12%
Orange	South Coast	976	12%
San Bernardino	South Coast	436	5%
San Diego	San Diego	372	5%
Alameda	San Francisco Bay Area	366	4%
Riverside	South Coast	230	3%
Ventura	South Central Coast	173	2%
Contra Costa	San Francisco Bay Area	173	2%
Sacramento	Sacramento Valley	170	2%