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collected from the excavated material and analyzed for <br /> BTX/TPH as diesel . These sample results will be <br /> submitted to the San Joaquin County Air Pollution Control <br /> District for consideration of aerating the contaminated <br /> soil . <br /> 2 . 8 . 2 One soil boring will be drilled to a depth of 25 feet to <br /> provide for the installation of the groundwater <br /> monitoring well . Drilling will be conducted by <br /> Osterberg and Stewart under C57 license 446670 using a <br /> hollow stem auger drill rig. The proposed well location <br /> is plotted on Figure 2 . The well will be constructed of <br /> 2 inch diameter F480 PVC screen/casing and completed as <br /> shown on Figure 3 . <br /> 2 . 8 . 3 Drill cuttings will be logged continuously for <br /> characterization of contamination and soil type by <br /> utilizing the Unified Soil Classification System. <br /> Descriptions of the soils encountered and monitoring well <br /> construction details will be recorded on a boring/well <br /> log and included within the assessment report . A cored (� <br /> soil sample will be collected above the water table at t{� <br /> a depth of ten feet and analyzed for BTX/TPH as diesel . <br /> The sample will be collected, preserved and transported <br /> under chain-of-custody in accordance with WaterWork ' s S4 <br /> Soil Sampling Protocol (Appendix II ) . B.C. Laboratories, <br /> a State Certified Laboratory, will perform the Q`�o <br /> analysis . All excavated soils will be placed on plastic <br /> sheeting, covered with same and remain on site until the <br /> laboratory results are received . Thereafter, a proposal <br /> for on-site treatment or disposal of the excavated <br /> material will be prepared . <br /> 2 . 8 . 4 Groundwater will be monitored in accordance with <br /> WaterWork ' s Groundwater Monitoring Protocol (Appendix II ) . <br /> _ 2 . 8 . 5 Subsequent to installation, a water sample will be <br /> collected from the monitoring wel a er purging a <br /> minimum of four well volumes (casing and sand pack ) . <br /> The purged water will remain on site in secured 55 <br /> gallon drums until laboratory results are received . A <br /> proposal for treatment or disposal of the water produced <br /> during development will then be prepared . Water sample <br /> collection and preservation will be in accordance with <br /> WaterWork ' s Groundwater Sampling Protocol (Appendix II ) . <br /> The water sample will be analyzed by B. C. Laboratories <br /> for BTX/TPH as diesel . <br /> 2 . 8 . 6 A Problem Assessment report will be prepared according <br /> to Regional Board guidelines summarizing the findings of <br /> the investigation and recommending-as appropriate further <br /> course of action . The field investigation will be <br /> conducted under the direct supervision of Russell <br /> Juncal, California Registered Geologist No . 3864, who <br /> will also review and sign the assessment report <br /> a <br />