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r <br /> r <br /> March 1p,2003 tv) <br /> NOA Environmental Project Number:LE03-063 <br /> Page 7 <br /> areas the surface layer is sandy loam or loam... <br /> Permeability is moderate in the Kingdon soil. Available water capacity is high... <br /> Tokay fine sandy loam: <br /> This very deep, well drained, nearly level soil in on law fan terraces. It formed in <br /> alluvium derived from granite rock sources.-.. <br /> Typically, the surface layer is grayish brown fine sandy loam about 19 inches thick. <br /> The subsoil is grayish brown, brown, and pale brown fine sandy loam about 26 <br /> inches thick The substratum to a depth of 60 inches is pale brown fine sandy loam... <br /> Permeability is moderately rapid in the Tokay-soil. Available water capacity is <br /> high... <br /> In their UST Sampling Results and Recommendations for.Further Action dated August 11, 1992, <br /> T&T Earth Services made the following statements about soil conditions encountered during boring <br /> in and around the former UST excavation pit: <br /> The surface.;units down to about 20 feet.. should... be characterized as clays with <br /> a high sand component. Hydrologic conductivities within-these units should be in <br /> the range of.002 to.I meter per day. The clean sand.unit from 20 to 25 feet should <br /> have a hydrologic conductivity of.1 to 2.5-meters per day. <br /> The entire sampled area is underlain by alight clay unit at 3410 35-feet. The bottom <br /> of this clay layer was not encountered but it was at least 1.5 feet thick in hole #2. <br /> i <br /> General Groundwater Conditions <br /> According to the San Joaquin County, California,.Flood Control and Water Conservation District <br /> Spring 1999 Groundwater Report, depth to water in the vicinity of the subject property is between <br /> 40 and 50 feet, and the groundwater gradient slopes down to the east-northeast at a rate of <br /> approximately twenty feet per mule. <br /> T & T Earth Moving Services stated the following about on-site ground water conditions.- <br /> No <br /> onditions:No ground water was encountered in any of the holes nor was evidence of seasonal <br /> saturation encountered. Investigation'into the probable depth to water indicate <br /> seasonal fluctuations from about 45 to 60 feet below ground surface in the area. <br /> i <br /> G <br />