2003 Almanac (page 265)  Table 5-46  2002 Emission Inventory by Compound			

"San Joaquin Valley Air Basin - 1,3-Butadiene"			
Emissions Source	tons/year	Percent Air Basin	Percent State
Stationary Sources	3	1%	0%
Area-wide Sources	134	27%	4%
On-Road Mobile	175	35%	5%
   Gasoline Vehicles	170	34%	5%
   Diesel Vehicles	4	1%	0%
Other Mobile	173	35%	5%
Natural Sources	10	2%	0%
Total	495	100%	16%
Total Statewide	3180