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Hughes Hardwoods <br /> May 5,2003 <br /> Page 3 <br /> 4.0 GROUND WATER <br /> The San Joaquin County Flood Control and Water Conservation District ground water depth and <br /> elevation maps for Fall 1998 and for Spring 1999 indicate the most recent ground water levels <br /> ,.. for fall and spring seasons for San Joaquin County. The following table summarizes all the <br /> available ground water information collected for the site and nearby area. <br /> Table 2. <br /> Summary of Available Ground Water Information. <br /> Date,Source Groundwater Depth Notes <br /> May 1,2003,one shallow and one 25-foot Ground water not <br /> percolation test boring.,Neil O.Anderson& encountered to a depth <br /> Associates,Inc. of 25 feet. <br /> Fall 1998,San Joaquin County Ground-Water About 58 feet Gradient about 7 feet/mile flowing <br /> Map.Plates 3 and 5. northeast of the site,variable <br /> gradient and direction. <br /> Spring 1999, San Joaquin County Ground- About 49 feet Gradient about 4+feet/mile flowing <br /> Water Map. Plates 2 and 4. northeast of the site,variable !� <br /> adient and direction. <br /> 5.0 GEOLOGY, SOILS,AND PERCOLATION <br /> The geology at the subject site consists of Holocene and (or) and upper Pliocene alluvium of <br /> Calaveras River and Vicinity.' The Calaveras River and Vicinity was deposited by Calaveras <br /> River,Bear Creek, and several lesser streams between the Molelumne and Stanislaus Rivers. <br /> The alluvium consists of gravel, sand, silt, and clay including flood plane deposits. <br /> The site is located on Urban Land Soil. Information from the Soil Conservation Service is not <br /> available due to the land being covered and altered by Urban Growth. Selected soil properties <br /> neighboring the Urban Land area is summarized in the following table and can be located on <br /> Plate V <br /> Atwater,B. F. 1982,Geologic maps of the Sacramento-San Joaquin Delta,California,USGS <br /> Miscellaneous Field Studies Map,MF- 1401,p.(21 sheets). <br /> Z USDA Soil Conservation Service,Soil Survey of San Joaquin County,Californi4 Sheet 31. <br /> r f CE Rt y <br /> SS or% <br /> Z W <br />