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! l <br /> 23 JANUARY 2000 <br /> NOA ENVIRONMENTAL PROJECT NUMBER LE00-336 <br /> Table 1 : PhIsical Setting Summary <br /> Surface Soil Type: San Joaquin Loam, 2 to 8 percent slopes,eroded <br /> Permeability: very slow <br /> Depth to approximately 120 feet <br /> Groundwater: <br /> FCurrent Site Use: the parcel is vacant with the remainder having one house,four bams and a small <br /> shop <br /> Past Site Use: pasture land <br /> F <br /> Soil Description- <br /> FSan Joaquin Loam, 2 to 8 percent slopes, eroded(description taken from the US GS Soil Survey of <br /> San Joaquin County) <br /> FThis moderately well drained, undulating and gently rolling soil is on dissected low <br /> terraces. It is moderately deep to a hardpan. It formed in alluvium derived from <br /> granitic rock sources. The native vegetation is mainly annual grasses, forbs, and <br /> FF scattered California white oak. Slopes are complex. The occur as Plane and convex <br /> side slopes and concave drainageways. Elevation is 20 to 100 feet... <br /> FTypically, the surface layer and upper part of the subsoil are brown loam about 16 <br /> inches thick. The next part of the subsoil is a claypan of brown clay about 10 inches <br /> thick. The lower part to a depth of 60 inches is a brown and light brown, inundated <br /> hardpan. In some areas the surface layer has been removed by erosion. <br /> Included in this unit are small areas of Jahant and Bruella soils on terraces and <br /> 'I moderately coarse textured soils that have a hardpan at a depth of 10 to 20 inches. <br /> P <br /> Also included are small areas of San Joaquin soils that have slopes of 0 to 2 or 8 to <br /> 15 percent..... Permeability is very slow in the San Joaquin soil. Available water <br /> capacity is low. <br /> r <br /> F <br /> F <br /> 5 <br /> Fil <br /> E F �. <br />