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31 October 2007 <br /> AGE-NC Project No. 07-1524 <br /> Page 7 of 10 <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 /> sample custody transfer from the field to the analytical laboratory. A chain-of-custody form will <br /> accompany the samples. <br /> The proposed CPT soil boring location is illustrated on Figure 2. Following borehole advancement, <br /> portland cement (grout mix) will be utilized to backfill each borehole from total depth utilizing a <br /> down-hole tremie pipe. The EHD will be given a 48-hour inspection notice to inspect the grout mix <br /> and backfilling activities. <br /> 4.2. PILOT BORING ADVANCEMENT <br /> The pilot borings will be advanced utilizing a truck-mounted, hollow-stem drill rig and 8-inch <br /> diameter hollow-stem augers. Cuttings and rinseate generated during drilling activities will be <br /> containerized in properly labeled Department of Transportation (DOT)-approved 55-gallon drums. <br /> and stored on-site in an area lacking public access. Disposal alternatives will be evaluated based on <br /> results of soil and water analysis. <br /> Soil samples will be collected from each soil boring at five-foot intervals. Relatively undisturbed soil <br /> samples will be collected in each of the borings using a California modified split-spoon sampler <br /> fitted with 2-inch diameter, 6-inch long brass sleeves. Upon removal from the sampler, the sample <br /> sleeves will be separated.The exposed ends of the second sleeve will be covered with Teflon sheets, <br /> capped and scaled with tape. The remaining soil will be visually classified by an AGE staffin <br /> accordance with the Unified Soil Classification System (USCS). Soil samples will also be field <br /> screened for the presence of volatile organic compounds using an organic vapor meter (OVM), <br /> equipped with a photo ionization detector (PID). Soil sample descriptions and OVM readings will <br /> be recorded on a log for each boring. <br /> Following sample collection,each preserved sample sleeve will be labeled with the boring location, <br /> depth, time, date and sampler's initials. Appropriately sealed and labeled samples will be placed in <br /> a chilled container with ice and transported under chain of custody procedures to a DHS-certified <br /> laboratory. <br /> 43. WELL COMPLETION AND WELI. ELEVATION SURVEY <br /> The 8.25-inch diameter pilot borings will be single-completed as a ground w=ater monitoring wells <br /> utilizing 2-inch diameter schedule 40 polyvinylchloride (PVC) 0.020-inch slotted well screen and <br /> blank well casing. A 20-foot length of well screen is anticipated for installation of the monitoring <br /> Advanced GeoEnvironmental,Inc. <br />