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16 July 2002 <br /> AGE-NC Project No. 95-0135 <br /> Page 6 of 7 <br /> end caps, secured with tape and immediately placed in a chilled container for transportation to a <br /> DHS-certified laboratory. Each sample sleeve will be labeled with the location, boring designation, <br /> depth, time, date and sampler's initials. <br /> Soil sample duplicates will be monitored for the presence of organic vapor using a photo-ionization <br /> detector (PID: Thermo Environmental 580B, 10.0 eV, calibrated to isobutylene) and the readings <br /> will be recorded on boring logs. Soil sample duplicates will be visually described using the Unified <br /> Soil Classification System(USCS) and the descriptions will be recorded on the boring logs. <br /> Grab ground water samples will be collected from within 2-inch diameter hollow-stem rods equipped <br /> with a four-foot, extendable 0.01-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 hydrochloric acid as a 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 /> sample custody transfer from the field to the analytical laboratory. A chain-of-custody form will <br /> 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 /> 4.3. EQUIPMENT DECONTAMINATION <br /> All sampling tools used for sample collection will be thoroughly rinsed with clean water after being <br /> washed with a solution ofAlconox. All down-hole drilling and sampling equipment will be pressure <br /> washed prior to starting each boring. <br /> Advanced GeoEnvironmental,Inc. <br />