Appendix B Carbon Monoxide - Peak 8-Hour Indicator (ppm) Table B-21 AIR BASIN 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 GREAT BASIN VALLEYS 7.3 7.2 7 5.9 5.8 5.7 5.6 3.5 5 4.7 4.6 4 4 3.9 2.9 2.5 2.5 LAKE COUNTY 1.9 2.9 2.9 LAKE TAHOE 16.4 15.5 14.9 13.2 12.6 11.9 11.1 10.2 8.7 8.3 7.8 7 5.6 5 2.3 2.1 2 2 1.9 1.9 MOJAVE DESERT 5.6 5.2 4.9 4.6 5.5 7.7 7.6 6.5 6.2 6.1 5.8 7.4 4.8 4.4 4.4 4.6 4.8 2 2 2 MOUNTAIN COUNTIES 4.5 4.5 4.1 4.3 2.9 2.9 2.8 2.8 2.7 2.4 5.1 5.4 5.7 2.4 1.6 1.6 4.8 NORTH CENTRAL COAST 2.4 2.6 2.5 2.5 2.5 2.5 2.5 2.5 2.4 2.3 2.2 2.2 2 2 2 1.6 1.6 1.5 1.4 1.2 NORTH COAST 5.2 5.2 3.4 4.6 4.6 2.4 3.2 3.4 3.3 3.1 3.6 3.4 3.3 2.6 2.3 2 NORTHEAST PLATEAU SACRAMENTO VALLEY 13.2 14.6 14.4 13.4 14 14.7 14.8 12.9 10.7 9.6 9.3 8.5 7.7 7.3 7 7 7.3 6 4.4 4.2 SALTON SEA 2.5 2.6 2.6 2.5 2.4 2.3 2.3 2.2 2.1 17.4 18.8 17.8 17.4 15.5 15.5 14.8 14.3 12.8 11.5 10.5 SAN DIEGO 10.6 10.2 10.4 10.2 10.3 10.2 10 8.6 7.8 7.7 7.3 7.3 6.3 6.3 5.6 5.3 5.4 5.3 5 4.6 SAN FRANCISCO BAY AREA 13.9 14 13.4 10.7 11.8 12.6 12.5 11.1 9.3 8.1 7.8 7.4 6.5 6.7 6.5 7.1 6.9 6 5.5 4 SAN JOAQUIN VALLEY 13.4 13.9 13.9 14.1 13.7 13.9 13.2 11.5 10 10 10.9 9.9 9 8.3 8.5 8.4 6.4 5.3 4.8 4.2 SOUTH CENTRAL COAST 10.2 9.9 10.1 9 8.8 8.2 7.5 6.4 5.5 5.9 6 5.8 5 4.8 4.5 4.7 3.1 2.7 2.7 2.4 SOUTH COAST 21.1 21.1 21.7 21.9 22.5 21.9 19 17.7 16.5 16.7 15.6 16.1 15.5 15.4 13.7 12.6 11.2 9.4 8.7 8.3