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As the drive casing and inner rods are advanced,soil is driven into a 1 inch diameter,four-foot-long sample <br /> barrel that is attached to the end of the inner rods. Soil samples were collected in a four foot long, 1-inch <br /> ' diameter butyrate sleeve fitted inside the sample barrel. After being driven four feet, inner rods are removed <br /> from the borehole with a hydraulic winch. The tube containing the soil samples was removed from the drive <br /> sampler and retained for potential chemical analyses. <br /> ' Soil samples collected just above first encountered water were analyzed for VOCs.All soil samples selected <br /> for chemical analysis were analyzed for VOCs in accordance with EPA method 8260. Soil samples were <br /> analyzed by Chromalab, Inc.,of Pleasanton,California, a State-certified analytical laboratory. <br /> During drilling,groundwater was encountered in all ten borings. Water samples were collected from borings <br /> ' GP-1 through GP-8 by lowering a disposable bailer into the borehole and transferring the groundwater into <br /> laboratory supplied containers. Water from GP-9 and GP-10 was not analyzed due to the distance from the <br /> Sharpe Depot source. Two flooded soil borrow areas are also located on-site. These borrow areas were used <br /> during development of the residential complex adjacent to the southern boundary of the site. Standing water <br /> was sampled from each of these borrow areas (SW-1 and SW-2). These ten water samples(GP-1 through <br /> GP-8, SW-1, and SW-2) were submitted to Chromalab for analysis for VOCs in accordance with EPA <br /> ' method 8260. After completing the drilling activities,the boreholes were backfilled to the ground surface <br /> by placing a cement-bentonite grout mixture (5% bentonite) in each borehole. The boreholes were filled <br /> from the bottom to the top using a tremie pipe. SJCEHD was notified and approved grouting prior to <br /> ' backfilling the holes,but were not available to witness grouting. <br /> Task 3: Results <br /> ' The soil observed in boreholes GP-1 through GP-10 are characterized by silty sands and sandy silts to the <br /> total depth explored as shown on the boring logs included in Attachment A. Groundwater was first <br /> encountered at depths between 6 and 16.5 feet during drilling.Groundwater levels stabilized to depths of 7 <br /> ' to 14 feet. <br /> Soil Analytical Results <br /> A total of ten discrete soil samples collected from boreholes GP-1 through GP-10 were submitted for <br /> laboratory analysis.No analytes were detected above the laboratory reporting limit. Laboratory analytical <br /> ' reports and chain-of-custody records are included in Attachment B. <br /> Groundwater Analytical Results <br /> ' A total of eight groundwater samples collected from boreholes GP-I through GP-8 and two surface water <br /> samples were submitted for laboratory analysis.No analytes were detected above the laboratory reporting <br /> ' limit. Laboratory analytical reports and chain-of-custody records are included in Attachment B. <br /> Summary <br /> ' The results of this survey do not indicate the presence of VOCs in the shallow soil and groundwater above <br /> detection limit concentrations in the areas sampled. As you know deep monitoring wells do indicate the <br /> ' presence of VOCs above detection limits along the eastern side of the property,adjacent to the Sharpe Depot. <br /> ' SECOR Job No.70139-004-02 <br /> Drill Report <br /> I:\70139\004-02\Drill Report.doc <br />