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direction data compiled at the Stockton weather stationr in San <br />Joaquin County with data collected from 1941 to 1945. The estimated <br />0� windrose shows winds blowing most frequently from the west ( 1B.B <br />percent of the time) and northwest (15.5 percent of the time), with a <br />m� calm period occurring 9.B percent of the time. <br />In 19B1 a wind rose was developed for the Tracy Municipal Airport, <br />which is approximately 2 miles to the northeast of the Corral Hollow <br />Sanitary Landfill, A copy of this windrose, developed by Reinard W. <br />m� Brandley, Consulting Airport Engineer for the City of Tracy, is shown <br />as Figure B. This windrose was developed using E4 hour observations <br />from January through December of 1973, and indicates that winds are <br />@� predominantly out of the west. There also is a minor trend of <br />occasional winds out of the south east. This wind direction data is <br />0� generally in agreement with the windrose developed from the Stockton <br />weather station in Figure 7, indicating that Figure 7 which reflects <br />=� the regional wind patterns for the upper San Joaquin Valley, <br />accurately characterizes wind patterns at the Corral Hollow Sanitary <br />Landfill. <br />-- f) Geology: <br />1) A geologic map and geologic cross-sections are presented in the <br />SWAT Report for the site. <br />m� 12 <br />