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TABLE 2. SUMMARY OF SAN JOAQUIN COUNTY AIR QUALITY DATA <br />POLLUTANT DAYS EXCEEDING STANDARDS <br />CURRENT STANDARD 1981 1982 1983 1984 1985 <br />CO (ppm) <br />Daily max. hour <br />1st high, 2nd high <br />14 14 <br />18.0 16.0 <br />17.0 16.0 <br />16.0 13.0 <br />13.0 12.0 <br />8 hour max. <br />1st high, 2nd high <br />7.50 6.10 <br />11.50 11.00 <br />12.10 9.70 <br />7.80 7.50 <br />8.40 7.1 <br />No. of stations <br />2 <br />3 <br />2 <br />2 <br />2 <br />NO2 (ppm) <br />Daily max. hour <br />1st high, 2nd high <br />.14 .13 <br />.19 .12 <br />.10 .09 <br />.09 .09 <br />.11 .11 <br />Annual mean <br />All hours <br />.023 <br />.022 <br />.022 <br />.022 <br />.020 <br />Annual mean <br />Max. hour <br />.041 <br />.041 <br />.038 <br />.040 <br />.036 <br />No. of stations <br />1 <br />1 <br />1 <br />1 <br />1 <br />03 (ppm) <br />Daily max. hour <br />1st high, 2nd high <br />.14 .14 <br />.13 .12 <br />.15 .15 <br />.15 .15 <br />.14 .13 <br />Annual mean <br />All hours <br />.021 <br />.022 <br />.025 <br />.026 <br />.027 <br />Annual mean <br />Max hour <br />.053 <br />.051 <br />.055 <br />.058 <br />.057 <br />No. of stations <br />2 <br />2 <br />2 <br />2 <br />2 <br />TSP <br />Occurrences of <br />24 hour average <br />concentrations: <br />>100 ug/m3 <br />16 <br />13 <br />18 <br />16 <br />28 <br />>150 ug/m3 <br />0 <br />0 <br />4 <br />4 <br />5 <br />>260 ug/m3 <br />0 <br />0 <br />0 <br />0 <br />0 <br />>375 ug/m3 <br />0 <br />0 <br />0 <br />0 <br />0 <br />No. of observations 61 61 61 60 56 <br />No. of stations 3 3 3 3 3 <br />Source: CARB Aerometric Division, Annual Summaries 1981 to 1985. <br />13.4-2 <br />