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10 November 2014 • • <br /> AGE Project No. 14-3154 <br /> Page 5 of 5 <br /> bearing zone. Grab groundwater samples will be collected using a Geoprobe water <br /> sampling assembly fitted with a pre-cleaned, of a temporary screen of one-inch <br /> diameter 0.01-slotted temporary well screen. Each groundwater sample will be <br /> extracted by dedicated disposable polyethylene tubing through the hollow center of the <br /> push rods into the screen section. Samples will be analyzed for TPH-g, VOCs, SVOCs, <br /> PCBs and metals will be collected into laboratory-supplied, non-preserved 40-ml <br /> Volatile Organic Analysis (VOA) vials, 1-liter Amber bottles or plastic container. <br /> Appropriately sealed and labeled samples will be placed in a chilled container under ice <br /> and transported under chain-of-custody procedure to a CDPH-certified laboratory. Each <br /> sample container will be labeled with sample designation, time, date and sampler's <br /> initials. <br /> 3.4. BORING ABANDONMENT <br /> All soil borings will be permanently sealed to prevent vertical migration of potential <br /> contaminants. Soil borings shall be abandoned by backfilling with cement grout from the <br /> total depth to surface grade. Borings advanced below the groundwater table will be <br /> abandoned with grout utilizing tremie procedures. The top three to six inches of the <br /> boring abandonments will be completed flush to surface grade with concrete, asphalt or <br /> dirt native to the area. The SJCEHD will be notified for grout inspection at least 48 hours <br /> prior to conducting grouting procedures. <br /> 3.5. EQUIPMENT DECONTAMINATION/WASTE MANAGEMENT <br /> All sampling tools used for sample collection will be thoroughly rinsed with clean water <br /> after being washed with a solution of Alconox. All down-hole drilling equipment will be <br /> pressure washed prior to starting each boring. All rinseate generated during drilling will <br /> be containerized in a properly labeled DOT-approved 55-gallon drum, and stored on- <br /> site in an area lacking public access. Disposal alternatives will be evaluated based on <br /> results of soil and water analysis. <br /> All field procedures will be overseen by an AGE representative under the supervision of <br /> a California Professional Geologist. Procedures for advancing soil probe borings, <br /> collection and analysis of groundwater samples, equipment decontamination and <br /> sample handling are presented below. <br /> Advanced GeoEnvironmental Inc. <br />