California Air Resources Board 2006 Almanac (web)			
Chapter 5	South Coast		Table 5-24
"South Coast - 1,3-Butadiene"			
Emissions Source	tons/year	Percent Air Basin	Percent State
Stationary Sources	8	1%	0%
Area-wide Sources	2	0%	0%
On-Road Mobile	429	62%	15%
   Gasoline Vehicles	420	60%	15%
   Diesel Vehicles	9	1%	0%
Other Mobile	256	37%	9%
   Gasoline Fuel	238	34%	9%
   Diesel Fuel	16	2%	1%
   Other Fuel	1	0%	0%
Natural Sources	0	0%	0%
Total	695	100%	25%
Total Statewide	2778