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:w�r�1'�-""Y�.s�,. <br /> pp <br /> i <br /> r'+ <br /> Work Plan, Excavation and Soil Sampling April 24, 1989 <br /> ARCO Service Stata,.on No. 760, Lodi, California 38048-2W <br /> Depth to ground water in monitoring wells that have been <br /> installed in the area over the past two years by Applied <br /> GcoSystems has fluctuated between 40 to 50 feet. <br /> PROPOSED WORK <br /> The proposed work is designed to remove hydrocarbon-<;ontaminated <br /> soil from the waste-oil tank cavity, or to remove as much <br /> hydrocarbon-contaminated soil as passible and assess hydrocarbon <br /> levels that remain in the soil after excavation. The following <br /> work elements are proposed: <br /> o Prepaae a Site Safety Plan for this phase of proposed <br /> work. <br /> o Observe excavation of soil in and around the waste-oil <br /> tank cavity until s2bjectiye evidence indicates that <br /> •` contaminated soil has been removed, or the safe <br /> operating limits of the equipment have been reached. <br /> o Collect soil samples from appropriate Locations in the <br /> base and walls of the excavation based on subjective <br /> evaluation of soil contamination. Samples will bye <br /> Q e.+ taken to evaluate if hydrocarbon contamination has been <br /> removed, or to assess the levels of hydrocarbons." <br /> remaining in the soil. <br /> o Collect soil samples from the stockpiled soil. Three <br /> soil samples will be collected, and composited into one <br /> a sample by the analytical laboratory, for every 25 yards <br /> of excavated soil. Composite samples will help in <br /> evaluating proper disposal of the soil. <br /> .... 5 <br />