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.... <br /> 27 July 1999 <br /> AGE-NC Project No. 99-0605 <br /> Page 4 of 5 <br /> will be included in the report. The report will be in a format acceptable to the PHS-EHD and the <br /> CVRWQCB, and will be reviewed and signed by a California Registered Geologist. <br /> 4.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative working under the supervision of <br /> a California Registered Geologist. Procedures for soil sampling, ground water sampling, equipment <br /> decontamination and sample shipment are outlined below. <br /> 4.1. SOIL SAMPLING PROCEDURES <br /> Soil borings will be advanced using hollow-stem auger drilling techniques. Relatively undisturbed <br /> soil samples will be collected in all borings using a California modified split-spoon sampler fitted <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. Each soil sample will be labeled with boring location, <br /> depth, time, date and sampler's initials following sample collection. Soil samples will be placed in <br /> a chilled container under ice and transported under chain-of-custody procedure to a DHS-certified <br /> laboratory. <br /> Soils encountered in the borings will be visually classified by an AGE geologist in accordance with <br /> the Unified Soil Classification System (USCS). Additionally, soil samples will be field screened for <br /> the presence of volatile organic compounds using an organic vapor meter equipped with a photo- <br /> ionization detector (PID: Thermo Enviromental 580A, 10.0 eV, calibrated to isobutylene). The field <br /> data will be recorded on logs for each boring. <br /> 4.2. GROUND WATER SAMPLING PROCEDURES <br /> If ground water is encountered, a sample will be collected for laboratory analysis by lowering a <br /> disposable polyethylene bailer through the hollow center of the augers. Upon retrieval, each sample <br /> will be transferred into EPA-approved 40-m1 volatile organic analyses (VOA) vials, containing 0.5 <br /> ml 18%hydrochloric acid as a sample preservative and into 1 liter ambers bottles. Care will be taken <br /> to ensure that visible air bubbles are not present in the VOAs after filling and capping. <br /> .9dranced Geo Lnviron menta1,1nc. <br />