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with ASTM D2488-69, "Description of Soils (Visual Manual Procedure)", which is based upon the <br /> Unified Soil Classification System(USCS). The USCS classification chart is contained in Appendix C <br /> with an example soil boring log. <br /> Background ambient-air VOC concentrations will be checked by a PID at the sample preparation bench <br /> prior to drilling each soil boring, and noted on the boring logs. Soil sample concentrations will be <br /> monitored within the soil remaining in the CAS liner above the soil sample, and noted on the boring <br /> logs. The PID will be calibrated by the shop prior to the start of field work. <br /> All soil borings will be backfilled to surface grade with cement grout. <br /> 2.3 Laboratory QA/QC <br /> The laboratory's quality assurance/quality control program includes a test methods' Spike Recovery and <br /> Relative RPD Summary Report. The spike sample results and spike sample duplicate results will be <br /> reviewed by GEE to determine if recovery results are within the acceptable recovery range. Sample <br /> results outside the acceptable recovery range will be re-analyzed. Analytical laboratory services will <br /> be provided by American Scientific Laboratories, a state-certified analytical laboratory located in Los <br /> Angeles, California. <br /> 2.4 Waste Handling <br /> The percussion/probing machine, a direct-push technology, does not produce any soil cuttings. Excess <br /> soil, from the remaining CAB liner after removing the soil sample portion, will be containerized in a <br /> Department of Transportation approved steel drum. The drum will be labeled with the following <br /> information: date drummed; the contents as soil cuttings;the drilling locations, from which the cuttings <br /> came; and the site address. <br /> This drum will be stored behind the security fence in the parking area. GEE will properly dispose of <br /> the drummed soil after we have received analytical results for the soil samples. <br /> Purged and decontamination water produced during our field activities will be placed in a steel drum. <br /> This drum will also be stored behind the security fence in the parking area. GEE will properly dispose <br /> of the drummed purged/decontamination water after we have received analytical results for the samples. <br /> GEE 4 Work Plan Phase 11 ESA Stockton <br />