2009 Almanac (page 1-22) Table 1-5						
Ambient Air Quality Standards						
Pollutant	Averaging Time	California Standards	Federal Standards			
		Concentration	Primary	Secondary		
Ozone (O3)	1 Hour	0.09 ppm	--	--		
	8 Hour	0.070 ppm	0.075 ppm	Same as Primary Standard		
Particulate Matter (PM10)	24 Hour	50 ug/m3	150 ug/m3	Same as Primary Standard		
	Annual Arithmetic Mean	20 ug/m3	--			
Fine Particulate Matter (PM2.5)	24 Hour	--	35 ug/m3	Same as Primary Standard		
	Annual Arithmetic Mean	12 ug/m3	15 ug/m3			
Carbon Monoxide (CO)	8 Hour	9.0 ppm	9 ppm	None		
	1 Hour	20 ppm	35 ppm			
	8 Hour (Lake Tahoe)	6 ppm	--	--		
Nitrogen Dioxide (NO2)	Annual Arithmetic Mean	0.030 ppm	0.053 ppm	Same as Primary Standard		
	1 Hour	0.25 ppm	--			
Sulfur Dioxide (SO2)	Annual Arithmetic Mean	--	0.030 ppm	--		
	24 Hour	0.04 ppm	0.14 ppm	--		
	3 Hour	--	--	0.5 ppm		
	1 Hour	0.25 ppm	--	--		
Lead	30 Day Average	1.5 ug/m3	--	--		
	3 Month Average	--	.15 ug/m3	Same as Primary Standard