Appendix A	Mountain Counties Air Basin - County: Placer - MC					Table A-46														

OZONE (ppm)	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002
Peak 1-Hour Indicator						0.155	0.134	0.134	0.109	0.12	0.119	0.118	0.119	0.116	0.111	0.106	0.111	0.114	0.113	0.129
4th High 1-Hr in 3 Yrs						0.14	0.14	0.14	0.1	0.11	0.11	0.12	0.119	0.117	0.109	0.103	0.105	0.105	0.104	0.116
Avg of 4th Hi 8-Hr in 3 Yrs						0.108	0.102	0.089	0.063	0.092	0.092	0.092	0.092	0.091	0.086	0.086	0.086	0.079	0.073	0.077
Maximum 1-Hr. Concentration						0.16	0.12	0.09	0.06	0.13	0.12	0.122	0.13	0.108	0.103	0.132	0.159	0.07	0.095	0.142
Max. 8-Hr. Concentration						0.138	0.101	0.078	0.035	0.098	0.097	0.107	0.1	0.091	0.097	0.108	0.093	0.058	0.088	0.113
Days Above State Standard						39	24	0	0	17	9	15	16	4	2	11	9	0	2	17
Days Above Nat. 1-Hr. Std.						7	0	0	0	1	0	0	1	0	0	1	1	0	0	2
Days Above Nat. 8-Hr. Std.						35	22	0	0	12	4	12	11	5	2	8	9	0	2	18

PM10 (ug/m3)	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002
Max. 24-Hour Concentration (State)													86	60	74					
Max. 24-Hr. Concentration (Nat)													86	60	74					
Annual Average (State)																				
Annual Average (Nat)														21.8	21.9					
Calc Days Above State 24-Hr Std																				
Calc Days Above Nat 24-Hr Std														0	0					

CARBON MONOXIDE (ppm)	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002
Peak 8-Hr. Indicator																				
Max. 1-Hr. Concentration																				
Max. 8-Hr. Concentration																				
Days Above State 8-Hr. Std.																				
Days Above Nat. 8-Hr. Std.																				

NITROGEN DIOXIDE (ppm)	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002
Peak 1-Hr. Indicator																				
Max. 1-Hr. Concentration																				
Max. Annual Average																				

SULFUR DIOXIDE (ppm)	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002
Peak 1-Hr. Indicator																				
Max. Annual Average																				
Max. 24-Hr. Concentration																				

Portions of Placer County lie within the Lake Tahoe and Sacramento Valley Air Basins