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LEVI N E•FRICKE <br /> Based on review of topographic maps, the San Joaquin County Flood <br /> Control and Water Conservation District ground-water contour map <br /> (Spring 1988) , and a report of recent investigation of an <br /> adjacent property (Terrestrial Technology, Inc. , October 1988) , <br /> depth to shallow ground water at the site is at or below 5 feet. <br /> Therefore, we do not expect to encounter ground water in the <br /> excavation pits. <br /> Soil Sampling Work Plan <br /> The Site will be divided into four equally sized areas. Soil <br /> samples will be collected from approximately 1- and 3-foot depths <br /> at three to four randomly selected locations within each area. <br /> Excavation will be accomplished using a backhoe; samples will be <br /> collected using trowels or brass tubes. <br /> A site map showing the areas and the approximate sampling loca- <br /> tions is attached. The actual location is subject to change <br /> based on field conditions at the time of collection. <br /> The soil samples will be analyzed for the selected, persistent <br /> agricultural chemical residues chlorinated pesticides and <br /> herbicides, using EPA Methods 8080 and 8150, respectively, and <br /> the metals arsenic, mercury, and lead using atomic adsorption. <br /> If you have any questions regarding this plan, please contact me <br /> or Beth Gurney. <br /> Si ere y, <br /> Q� <br /> Kati Neidig <br /> Project Scientist <br /> Enclosure - a <br /> -2_ <br /> f <br />