Acetaldehyde			
County	Air Basin	tons/year	Percent
Los Angeles	South Coast	1624	17%
San Diego	San Diego	675	7%
Orange	South Coast	549	6%
Alameda	San Francisco Bay Area	363	4%
San Bernardino	South Coast	315	3%
Fresno	San Joaquin Valley	307	3%
Kern	San Joaquin Valley	305	3%
Sacramento	Sacramento Valley	301	3%
Santa Clara	San Francisco Bay Area	300	3%
Riverside	South Coast	261	3%