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I05 July 2000 <br /> . AGE-NC Project No 00-0696 <br /> Pages 3 of 9 <br /> I Coast Range and the Sierra Nevada, respectively Rocks composing the basement complex of the <br /> province have not been completely defined but are believed to be metamorphic and igneous origin <br /> The northern and southern portions of the Great Valley Province have been designated the <br /> ISacramento and San Joaquin Valleys, respectively <br /> Based on the General Soil Map from the San Joaquin County Soil Survey, published by the United <br /> States Department of Agriculture Soil Conservation Service in 1992, the site area is within the <br /> Jackson-Hallenbeck-Stockton (JHS) association The JHS soils are located within basins, and <br /> generally consist of moderate to poorly drained fine-textured soils The soils are generally derived <br /> I from both marine and non-manne sediment, and are generally formed in alluvium derived from <br /> mixed rock sources <br /> IThe Modesto, Riverbank, Turlock Lake Formations and overlying recent alluvium are the principal <br /> source of domestic ground water in the 13,500-square-mile San Joaquin Valley Ground Water Basin <br /> (Basin 5-22) This basin is drained primarily by the San Joaquin River The nearest surface water <br /> Ifeature in the vicinity of the property is an irrigation drainage ditch located approximately 120 feet <br /> south of the Terminous Market and the Mokelumne River located approximately 2,500 feet north <br /> . of the site <br /> 2 5 GROUND WATER DEPTH AND GRADIENT <br /> Based on the location, the estimated depth to ground water in the vicinity of the site is 5 to 15 feet <br /> I bsg The prevailing ground water flow direction in the vicinity of the site is inferred to be toward the <br /> Mokelumne River west of the site However, flow direction may be both locally and seasonably <br /> variable <br /> I <br /> 26 RECEPTOR WELL SURVEY <br /> IA survey was performed to identify potential receptor wells near the subject property A database <br /> from the California Department of Water Resources (DWR), well driller's log files and a well <br /> I location map prepared by the San Joaquin County Flood Control and Water Conservation District <br /> (SJCFC&WCD)were examined to locate wells near the site A 2,000 foot search radius from the site <br /> was used Owners/residents of nearby properties of the site were contacted regarding wells near the <br /> site Results of the receptor survey are included as Appendix A <br /> i <br /> Advanced GeoEnvironmental,Inc <br />