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TABLE 3. SUMMARY OF STANISLAUS COUNTY AIR QUALITY DATA <br />POLLUTANT <br />DAYS <br />EXCEEDING <br />STANDARDS <br />CURRENT STANDARD 1981 <br />1982 <br />1983 <br />1984 1985 <br />CO (ppm) <br />of <br />observations <br />63 <br />68 <br />63 <br />Daily max. hour <br />62 <br />No. <br />of <br />stations <br />5 <br />1st high, 2nd high <br />15.0 13.0 <br />11.0 11.0 <br />14.0 13.0 <br />15.0 14.0 <br />15.0 15.0 <br />8 hour max. <br />1st high, 2nd high <br />11.80 7.80 <br />6.90 6.80 <br />8.60 8.60 <br />8.4 7.3 <br />11.00 9.101 <br />No. of stations <br />2 <br />1 <br />1 <br />1 <br />1 j <br />NO2 (ppm) <br />i <br />Daily max. hour <br />1st high, 2nd high <br />.17 .15 <br />.13 .12 <br />.11 .11 <br />.08 .08 <br />.12 .12 <br />Annual mean <br />All hours <br />.027 <br />.026 <br />.023 <br />.020 <br />.021 <br />Annual mean <br />i <br />Max. hour <br />.045 <br />.043 <br />.040 <br />.036 <br />.038 <br />No. of stations <br />2 <br />1 <br />1 <br />1 <br />2 <br />03 (ppm) <br />Daily max. hour <br />1st high, 2nd high <br />.15 .15 <br />.11 .11 <br />.14 .13 <br />.16 .15 <br />.15 .1 <br />Annual mean <br />All hours <br />.024 <br />.026 <br />.022 <br />.029 <br />.026 <br />Annual mean <br />Max. hour <br />.053 <br />.057 <br />.052 <br />.060 <br />.056 <br />No. of stations <br />2 <br />3 <br />2 <br />3 <br />2 <br />TSP <br />Occurrences of <br />24 hour average <br />concentrations: <br />>100 ug/m3 <br />31 <br />17 <br />12 <br />19 <br />15 <br />>150 ug/m3 <br />7 <br />3 <br />2 <br />4 <br />5 <br />>260 ug/m3 <br />1 <br />0 <br />0 <br />0 <br />1 <br />>375 ug/m3 <br />0 <br />0 <br />0 <br />0 <br />1 <br />No. <br />of <br />observations <br />63 <br />68 <br />63 <br />63 <br />62 <br />No. <br />of <br />stations <br />5 <br />4 <br />4 <br />3 <br />3 <br />Source: CARB Aerometric Division, Annual Summaries 1981 to 1985. <br />13.4-3 <br />