Appendix B	PM10 - Calculated Days Above National 24-Hour Standard								Table B-15											

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				12	12	14	8	30	22	9	16	27	15	32	6	37	17	18	28	26
LAKE COUNTY					0	0	0	0	0	0	0	0	0	0		0				
LAKE TAHOE					0	0	0	0		0	0	0	0	0	0	0	0	0	0	0
MOJAVE DESERT				0	8	21	30	6	0	0	3	0	0	6	0	0	0	6	8	0
MOUNTAIN COUNTIES				7	0	6	19	0	0	0	0	0	0	0	0	0	6	0	0	0
NORTH CENTRAL COAST				0	0	0	0		0	0	0	0	0	0	0	0	0	0	0	0
NORTH COAST				0	0	6	0	0	0	0	0	0	0	0	0	0	0	0	0	0
NORTHEAST PLATEAU				0	0	0		0		0	0	3	0	0	0	0	0	0	0	0
SACRAMENTO VALLEY				0	0	0	0	0	0	0	0	0	0	0	6	0	0	0	0	6
SALTON SEA				12	37	21	18	6	18	18	26	37	35	19	29	36	29	18	28	13
SAN DIEGO				0	0	0	0	0	6	0	0	0	0	0	0	0	0	0	9	0
SAN FRANCISCO BAY AREA				0	0	4	1	0	0	0	0	0	0	0	0	0	0	0	0	0
SAN JOAQUIN VALLEY				40	40	56	40	3	11	8	8	0	3	6	12	0	12	8	0	3
SOUTH CENTRAL COAST				0	0	0	0	0	0	0	0	0	14	0	0	0	0	6	0	0
SOUTH COAST				44	32	33	15	24	12	3	31	6	17	0	6	0	5	0	6	0

* Salton Sea PM10 statistics exclude data from the Calexico - East site because data from this site do not represent widespread exposure.