2002 Almanac (page 269)  Table 5-46  2001 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	136	24%	4%
On-Road Mobile	234	42%	6%
   Gasoline Vehicles	230	41%	6%
   Diesel Vehicles	4	1%	0%
Other Mobile	175	31%	5%
Natural Sources	10	2%	0%
Total	559	100%	15%
Total Statewide	3678