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07 October 2004 <br /> AGE-NC Project No. 01-0887 <br /> Page 6 of 6 <br /> recorded on the boring logs. <br /> Grab groundwater samples will be collected from within 2-inch diameter hol low-stem rods equipped <br /> with a four-foot, extendable 0.010-inch slotted PVC screen. Grab ground water samples will be <br /> collected in selected intervals of saturated porous and permeable material. The screen will be <br /> exposed at the selected depths and a stainless steel bailer will be used to retrieve the water samples. <br /> Ground water samples for appropriate EPA analyses will be collected into 40-m1 volatile organic <br /> analysis(VOA) vials containing 0.5 ml of 18%hydrochloric acid solution as a sample preservative <br /> or 1-liter amber bottles without sample preservative. <br /> After collection, the samples will be appropriately labeled and placed on ice and kept in a cooler <br /> until delivered to the laboratory for analysis. Chain-of-custody protocols will be used to document <br /> custody transfer of the samples from the field to the analytical laboratory. A chain-of-custody form <br /> will accompany the samples. <br /> Proposed soil boring locations are illustrated on Figure 2.Following borehole advancement,portland <br /> cement(grout mix)will be utilized to backfill each borehole from total depth utilizing a down-hole <br /> tremie pipe. The EHD will be given a 48-hour inspection notice to inspect the grout mix and <br /> backfilling activities. <br /> 4.2. EQUIPMENT DECONTAMINATION <br /> All sampling tools used for sample collection will be thoroughly rinsed with clean water after being <br /> washed in a solution of Alconox. All down-hole drilling equipment will be pressure washed prior <br /> to starting each boring. Cuttings generated during drilling and rinseate generated during drilling and <br /> ground water sampling activities will be containerized in properly labeled DOT-approved 55-gallon <br /> drums, and stored on-site in an area lacking public access. Disposal alternatives will be evaluated <br /> based on results of soil and water analysis. <br /> Advanced GeoEnviro n mental,Inc. <br />