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3.0 SITE CHARACTERISTICS <br /> 3.1 TOPOGRAPHY <br /> The terrain at the landfill and surrounding vicinity consists of a relatively <br /> featureless plain. Both the north and south branches of the South Fork ofLittle <br /> John's Creek (North and South Branches) traverse the site, generally flowing <br /> from the east to the west. Originatground surface elevations range from 30,to <br /> 40 feet above mean seal level (amsf) (see Figure 3). Currently developed, <br /> portions of the site reach a maximum elevation of approximately 80 feet annsl in, <br /> the existing Austin Roadta-rTdfiff"area,` daMoximately 130 feet amsi-in-,the <br /> existing Forward Landfill area, see Drawing 2 (Site Plan). <br /> 3.2 CLIMATE <br /> The climate of the region is typical of the California Central Valley. Winters ire <br /> generally cold and wet with fog, while summers are hot and dry. Climatological <br /> data were gathered from representative weather stations near the site. <br /> Representative climatologic stations were selected based on their proximity to,the <br /> site and reliable period of records for the station (30 years or more). <br /> 3.2.1 TEMPERATURE <br /> Normal monthly temperatures were calculated from the Stockton Weather <br /> Station office (WSO) (No. 8558, latitude 37°54', longitude 121'15', Elevation <br /> 22 feet amsl), located approximately 3 miles west of the site, from data-coifected <br /> from 1948 through 1990. These temperatures ranged from a minimum average <br /> temperature of 42.5°F in January to a maximum average temperature of 78.0°F! <br /> in August, with an annual mean temperature of 61.5°F (National Climatic Data <br /> Center, 1990). <br /> 3.2.2 PRECIPITATION <br /> Precipitation at the project site is typical of the Central Valley region. Rainfall is <br /> seasonal, with approximately 90 percent of the rainfall occurring between <br /> November and April. Snowfall is unusual at the site. <br /> Forward Landfill JTD 3-1 <br /> L:\Allied\2000.193\Reports\finaljtd:Sec-3.0:08/20/01 <br /> BRYAN A.STIRRAY&ASSOCIATES <br />