2002 Almanac (page 443)  Table C-8  County Emissions (tons/year) for Ten Toxic Air Contaminants by Air Basin			
Northeast Plateau Air Basin			

TAC	Lassen	Modoc	Siskiyou
Acetaldehyde	63	22	84
Benzene	110	33	131
"1,3-Butadiene"	24	6	67
Carbon Tetrachloride	0	0	0
Chromium (Hexavalent)	< .01	< .01	< .01
para-Dichlorobenzene	2	< 1	2
Formaldehyde	138	36	164
Methylene Chloride	4	1	6
Perchloroethylene	21	7	26
Diesel PM	61	50	109