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r October 412001 <br /> " Job Number:LG00�-287 <br /> Page 6 <br /> " VI. GEOLOGY, SOILS;AND PERCOLATION TEST <br /> The surface geology at the site is shown on At-Water$s map and is composed of. <br /> 'Pleistocene Modesto Formation consisting,of loose sand and silt, chiefly fluvial' (Plate 6). <br /> The surface and_near surface soils located at site are.reported to be the Veritas fine sandy. <br /> ` loam no. 266 Plate 7)'_°The San Joaquin Soil Survey describes the•soil as the following. This <br /> { ) { « <br /> moderately will drained, nearly level soil is on low fan terraces. .'The soil is deep to .a hardpan <br /> and formedin alluvium derived firohi mixed rock sources. Permeability is moderately rapid in <br /> the Veritas soil." Table 4 presents some selected properties of the Veritas fine sandy loam. <br /> Table 4. ' <br /> "Selected Soil Properties of the-Veritas fine sandy'loam.- <br /> ' San Joaquin County Soil Survey Report.' <br /> Soil-Name and Map Depth(in) Unified Soil. Salinity Soil Septic tank <br /> " Symbol Classification mmhoslcm Reaction absorption <br /> pH fields <br /> r "Veritas fine sandy _ 0-15 fine sandy SM -�4 7.4-$:4 Moderate: <br /> t loam,0 to 2 percent loam. SM <4 _7:4-8.4., flooding,. <br /> Y slopes,266. 15=54: Clay,silty clay.'- <br /> 5470: <br /> lay.'54-70:-Cemented...' <br /> " Note: The table descriptions do not necessarily reflect site-specific-soil"properties. <br /> sAtwater,B.F., 198"2,Geologic Maps of the Sacramento-5an Joaquin Delta,California:U.S.Geologic <br /> Survey Miscellaneous Field Survey Map MF-1401,21 Sheets,Scale 1:24,000: <br /> 6 USDA Soil Conseryation Service,Soil Survey of San Joaquin County,California, Sheet 18. . <br /> 6 � <br /> r <br />