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TABLE 4.5-2 <br /> SAN JOAQUIN COUNTY AIR QUALITY DATA' <br /> (1987-1990) <br /> Year Monitoring Site: <br /> Hazelton Claremont Mariposa <br /> Carbon Monoxide (8-hour) <br /> 1987 0 1 -- <br /> 1988 1 1 -- <br /> 1989 1 6 -- <br /> 1990 2 7 -- <br /> Ozone (Federal 1-hour) <br /> 1987 0 -- 1 <br /> 1988 1 -- 3 <br /> 1989 0 0 <br /> 1990 0 1 <br /> Ozone (State 1-hour) <br /> 1987 10 -- 53 <br /> 1988 18 -- 29 <br /> 1989 3 -- 7 <br /> 1990 9 -- 16 <br /> PM-10 (State 24-hour) <br /> 1987 22 -- -- <br /> 1988 20 <br /> 1989 18 -- -- <br /> 1990 22 -- -- <br /> ' Numbers in columns refer to the number of days that year the federal or state standard was exceeded. <br /> Note: -- = Not available. <br /> Source: California Air Resources Board, 1988-1991. <br /> 4.5-5 <br />