2003 Almanac (page 447)  Table C-8  County Emissions (tons/year) for Ten Toxic Air Contaminants by Air Basin			
Northeast Plateau Air Basin			

TAC	Lassen	Modoc	Siskiyou
Acetaldehyde	60	21	80
Benzene	98	11	99
"1,3-Butadiene"	23	5	64
Carbon Tetrachloride	0	0	0
Chromium (Hexavalent)	< .01	< .01	< .01
para-Dichlorobenzene	2	< 1	2
Formaldehyde	133	34	156
Methylene Chloride	4	1	6
Perchloroethylene	6	2	9
Diesel PM	56	49	105