California Air Resources Board 2004 Almanac (web)			Table C-7																	
Appendix C	County Emissions for Ten Toxic Air Contaminants - North  Coast  Air Basin																			
TAC	Del Norte	Humboldt	Mendocino	Sonoma	Trinity															
Acetaldehyde	22	89	67	31	20															
Benzene	16	91	71	70	30															
"1,3-Butadiene"	16	25	17	15	14															
Carbon Tetrachloride	0.00	0.00	0.00	0.00	0.00															
Chromium (Hexavalent)	< .01	< .01	0.01	0.03	< .01															
para-DiChlorobenzene	2	7	5	3	< 1															
Formaldehyde	36	162	126	79	40															
Methylene Chloride	5	18	14	13	2															
Perchloroethylene	6	28	20	15	3															
Diesel PM	40	218	150	90	12