Appendix A	Lake Tahoe Air Basin - County: Placer - LT					Table A-38														

OZONE (ppm)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
Peak 1-Hour Indicator																			0.079	0.079
Peak 8-Hour Indicator																			0.073	0.073
4th High 1-Hr. in 3 Yrs																			0.076	0.076
Avg. of 4th High 8-Hr. in 3 Yrs																			0.068	0.061
Maximum 1-Hr. Concentration																			0.086	0.065
Max. 8-Hr. Concentration																			0.07	0.061
Days Above State Standard																			0	0
Days Above Nat. 1-Hr. Std.																			0	0
Days Above Nat. 8-Hr. Std.																			0	0

PM10 (ug/m3)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
Max. 24-Hr. Concentration (State)											24	50								
Max. 24-Hr. Concentration (Nat)											24	50								
Annual Average (State)																				
Annual Average (Nat)																				
Calc Days Above State 24-Hr Std																				
Calc Days Above Nat 24-Hr Std																				

PM2.5 (ug/m3)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
Max. 24-Hr. Concentration (State)																			27.4	8
Max. 24-Hr. Concentration (Nat)																				
98th Percentile of 24-Hr Conc.																				
Annual Average (State)																				
Avg. of Qtrly. Means (Nat)																				

CARBON MONOXIDE (ppm)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
Peak 8-Hr. Indicator									3.9	3.9	3.9								1	1
Max. 1-Hr. Concentration									9	11.6	9.5								1.4	0.9
Max. 8-Hr. Concentration									4.3	4.7	2.9								0.8	0.5
Days Above Nat. 8-Hr. Std.									0	0	0								0	0
Days Above Lake Tahoe 8-Hr. Std.									0	0	0								0	0

NITROGEN DIOXIDE (ppm)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
Peak 1-Hr. Indicator																				
Max. 1-Hr. Concentration																				0.026
Max. Annual Average																				

SULFUR DIOXIDE (ppm)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
Peak 1-Hr. Indicator																				
Max. Annual Average																				
Max. 24-Hr. Concentration