Chapter 4	San Diego Air Basin 						Table 4-42			
"NOx Emission Trends (tons/day, annual average)"										
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010	2015	2020
All Sources	284	268	271	305	268	232	193	160	129	111
Stationary Sources	48	32	17	19	16	14	9	10	10	10
Area-wide Sources	2	3	3	3	3	3	3	3	3	3
On-Road Mobile	186	176	187	203	178	146	113	88	64	48
   Gasoline Vehicles	172	159	160	165	141	104	64	45	32	24
   Diesel Vehicles	13	17	26	38	37	42	50	43	31	24
Other Mobile	48	58	65	80	70	70	68	60	53	50
   Gasoline Fuel	3	4	5	6	6	6	7	6	6	6
   Diesel Fuel	38	47	52	65	55	54	49	41	32	25
   Other Fuel	7	8	8	9	9	11	12	13	15	20