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Stockton Plating <br /> . Work Plan <br /> November 17, 1933 <br /> IPage - 2 - <br /> groundwater contamination at the site. The proposed scope of <br /> work is summarized below: <br /> ( 1) drill and construct three groundwater monitor wells <br /> around the tank site as shown in Figure 2, Appendix A. <br /> (2) provide a geologist trained in the use of the Unified <br /> Soil Classification System to supervise and log each <br /> borehole. <br /> ( 3) collect at least 9 soil samples (three per borehole) <br /> during installation of the wells for laboratory analyses . <br /> (4) collect three groundwater samples (one per monitor well) <br /> for laboratory analyses . <br /> (5) conduct a well collar survey to be performed by a <br /> licensed surveyor certified by the State of California. <br /> (6 ) collect and compile groundwater elevation data to <br /> determine the groundwater gradient and flow direction. <br /> (7) prepare a Soil and Groundwater Investigation Report for <br /> submission to the San Joaquin County Environmental Health <br /> Department and the State Regional Water Quality Control <br /> Board. <br /> 2.0 SITE BACKGROUND <br /> On August 14, 1986, a 1, 000-gallon underground storage tank <br /> (TK1-86) used for the storage of leaded gasoline was removed from <br /> SPI by the American Environmental Management Corporation (AEMC) <br /> of Rancho Cordova, California. Analytical results from a soil <br /> sample (SP-1) collected from beneath the former tank location <br /> indicated levels of diesel, motor oil, and total lead. No <br /> apparent source for the diesel was determined. Additional <br /> excavation was conducted on August 25, 1986, by AEMC. Two soil <br /> �,� CONDOR <br />