Chapter 4	San Diego Air Basin 						Table 4-47			
"NOx Emission Trends (tons/day, annual average)"										
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010	2015	2020
All Sources	272	264	276	309	262	221	177	142	110	91
Stationary Sources	48	32	17	19	17	14	9	12	12	14
Area-wide Sources	3	3	3	3	3	3	3	3	3	3
On-Road Mobile	178	174	195	216	185	149	113	83	57	41
   Gasoline Vehicles	168	155	156	157	133	96	62	43	30	22
   Diesel Vehicles	10	19	39	59	52	52	51	40	27	20
Other Mobile	44	57	61	71	57	56	52	44	37	33
   Gasoline Fuel	3	3	4	5	5	6	6	6	6	5
   Diesel Fuel	37	48	51	59	46	43	38	31	24	20
   Other Fuel	5	5	6	6	6	7	7	7	7	7