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26 April 1999 <br /> AGE-NC Project No. 99-0592 <br /> Page 5 of 5 <br /> with 2-inch diameter, 6-inch long brass sleeves. Upon removal from the sampler, the sample sleeve <br /> will be separated with a clean soil knife. The exposed ends of the second sleeve will be covered with <br /> Teflon sheets, capped and sealed with tape. Soils encountered in the borings will be visually <br /> classified by an AGE geologist in accordance with the Unified Soil Classification System (USCS). <br /> Additionally, soil samples will be field screened for the presence of volatile organic compounds <br /> using an organic vapor meter equipped with a photo-ionization detector(PID: Thermo Enviromental <br /> 580A, 10.0 eV, calibrated to isobutylene). <br /> Each soil sample will be labeled with boring location, depth, time, date and sampler's initials <br /> following sample collection. Soil samples will be placed in a chilled container under ice and <br /> transported under chain-of-custody procedure to a DHS-certified laboratory. <br /> 4.2. GROUND WATER SAMPLING PROCEDURES <br /> If ground water is encountered then standard sampling procedures will be utilized by a disposable <br /> polyethylene bailer. Upon retrieval, each sample will be transferred into EPA-approved 40-m1 <br /> volatile organic analyses (VOA) vials, containing 0.5 ml 18% hydrochloric acid as a sample <br /> preservative and 1 liter Ambers. Care will be taken to ensure that visible air bubbles are not present <br /> in the VOAs after filling and capping. <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 of Alconox. All down-hole drilling and sampling equipment will be pressure <br /> washed prior to starting the boring. Rinseate will be containerized in D.O.T.-approved 55-gallon <br /> steel drums and stored at the site pending laboratory analysis. <br /> Advanced GeoEnvironmental,Inc. <br />