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12 March 1999 <br /> AGE-NC Project No. 98-0432 <br /> Page 6 of 6 <br /> Each ground water sample will be extracted by lowering a Teflon bailer through the hollow center <br /> of the push rods into the screen section. Samples will be collected in laboratory-supplied, 40-m1 <br /> VOA vials containing 0.5-m1 of hydrochloric acid as sample preservative and I-liter containers. The <br /> labeled vials and liter containers AiIl be placed in a chilled container under ice and transported under <br /> chain-of-custody to a DHS-certified laboratory. <br /> 4.4. EQUIPMENT DECONTAMINATION <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. <br /> 4.5. BORING ABANDONMENT <br /> All probe borings will be permanently sealed to prevent vertical migration of contaminants. Soil <br /> borings shall be abandoned by backfilling with cement-slurry from the total depth to surface grade. <br /> 5.0. REFERENCES <br /> California Division of Mines and Geology, 1981. Regional Geologic Rlap Series, Sacramento <br /> Quadrangle. <br /> Olmsted, F.H., and G.H. Davis, 1961, Geologic Features and Groundwater Storage Capacity of the <br /> Sacramento Valley, California, U.S. Geological Survey Water Supply Paper 1497, 241p. <br />