Chapter 5	San Diego		Table 5-57
"San Diego - 1,3-Butadiene"			
Emissions Source	tons/year	Percent Air Basin	Percent State
Stationary Sources	< 1	0%	0%
Area-wide Sources	4	2%	0%
On-Road Mobile	108	50%	4%
   Gasoline Vehicles	106	49%	3%
   Diesel Vehicles	2	1%	0%
Other Mobile	94	44%	3%
   Gasoline Fuel	66	31%	2%
   Diesel Fuel	4	2%	0%
   Other Fuel	25	11%	1%
Natural Sources	8	4%	0%
Total	215	100%	7%
Total Statewide	3030