Chapter 4	San Diego Air Basin 						Table 4-51			
"NOx Emission Trends (tons/day, annual average)"										
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010	2015	2020
All Sources	277	261	261	297	261	226	186	153	120	97
Stationary Sources	48	32	17	19	17	14	10	9	9	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	41	52	55	72	64	63	61	53	44	37
   Gasoline Fuel	3	4	5	6	6	6	6	6	6	6
   Diesel Fuel	33	43	45	59	52	50	46	40	31	24
   Other Fuel	5	5	6	7	7	8	8	7	7	7