California Air Resources Board 2009 Almanac (web)			
Chapter 5	Table 5-4		Statewide
Acetaldehyde			
County	Air Basin	tons/year	Percent
Los Angeles	South Coast	1174	13%
San Diego	San Diego	524	6%
Orange	South Coast	376	4%
Kern	San Joaquin Valley	360	4%
San Bernardino	Mojave Desert	349	4%
Fresno	San Joaquin Valley	320	4%
Santa Clara	San Francisco Bay Area	268	3%
Alameda	San Francisco Bay Area	264	3%
San Joaquin	San Joaquin Valley	258	3%
San Bernardino	South Coast	258	3%