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• 28 April 2005 <br /> AGE-NC Project No 97-0351 <br /> Page 11 of 11 <br /> 4 5 4 Sample Handling <br /> Ground water samples will be collected into laboratory-supplied,40-m1 VOA vials containing 0 5 ml <br /> 18% hydrochloric acid solution as a sample preservative, and 1-liter amber bottles without <br /> preservative Care will be taken to ensure that visible air bubbles are not present in the vials after <br /> filling and capping Following collection the samples will be appropriately labeled, placed on ice, <br /> and kept in a cooler until delivered to a DHS-certified analytical laboratory for analysis Chain of <br /> custody protocols will be used to document sample custody transfer from the field to the laboratory, <br /> a chain of custody form will accompany the samples <br /> 4 6 EQUIPMENT DECONTAMINATIONIWASTE MANAGEMENT <br /> All sampling tools used for sample collection will be thoroughly rinsed with clean water after being <br /> washed with a solution of Alconox All probing rods will be cleaned prior to advancement at each <br /> probe boring location, and all down-hole and drilling equipment will be pressure washed prior to <br /> starting each boring Cuttings and rinscate generated during drilling will be containerized in properly <br /> labeled, Department of Transportation (DOT)-approved 55-gallon drums and stored on-site in an <br /> area lacking public access Disposal alternatives will be evaluated based on the results of soil and <br /> ground water analysis <br /> 4 7 BORING ABANDONMENT <br /> All probe borings will be permanently sealed to prevent vertical migration of potential contaminants <br /> Soil borings shall be abandoned by backfilling with portland cement utilizing a tremie pipe from <br /> total depth to surface grade <br /> 5.0 REFERENCES <br /> California Division of Mines and Geology, 1981 Regional Geologic Map Serres, Sacramento <br /> Quadrangle <br /> Olmsted, F H , and G H Davis, 1961, Geologic Features and Ground Water Storage Capacity of <br /> the Sacramento Valley, California, US Geological Survey Water Supply Paper 1497,241p <br /> Advanced GeoEnvironmental,Inc <br />