2003 Almanac (page 249)  Table 5-24  2002 Emission Inventory by Compound			

"South Coast Air Basin - 1,3-Butadiene"			
Emissions Source	tons/year	Percent Air Basin	Percent State
Stationary Sources	4	0%	0%
Area-wide Sources	39	5%	1%
On-Road Mobile	554	65%	17%
   Gasoline Vehicles	546	64%	17%
   Diesel Vehicles	8	1%	0.002469933
Other Mobile	237	28%	7%
Natural Sources	17	2%	0.005383874
Total	852	100%	27%
Total Statewide	3180