California Air Resources Board 2006 Almanac (web)			
Chapter 5	Statewide		Table 5-6
"1,3-Butadiene"			
Emissions Source	tons/year	Percent State	
Stationary Sources	25	1%	
Area-wide Sources	404	15%	
On-Road Mobile	1240	45%	
   Gasoline Vehicles	1216	44%	
   Diesel Vehicles	25	1%	
Other Mobile	1109	40%	
   Gasoline Fuel	830	30%	
   Diesel Fuel	58	2%	
   Other Fuel	220	8%	
Natural Sources	0	0%	
Total Statewide	2778	100%