2002 Almanac (page 285)  Table 5-68  2001 Emission Inventory by Compound			

"Sacramento Valley Air Basin - 1,3-Butadiene"			
Emissions Source	tons/year	Percent Air Basin	Percent State
Stationary Sources	<1	0%	0%
Area-wide Sources	73	21%	2%
On-Road Mobile	159	46%	4%
   Gasoline Vehicles	157	45%	4%
   Diesel Vehicles	2	1%	0%
Other Mobile	106	31%	3%
Natural Sources	8	2%	0%
Total	346	100%	9%
Total Statewide	3678