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V <br /> 15 April 2003 <br /> AGE-NC Project No. 02-0950 <br /> Page 7 of 10 <br /> V <br /> to five feet below total depth. Grab ground water samples will be collected using a water sampling <br /> assembly fitted with a pre-cleaned, one-inch diameter 0.01-slotted temporary well screen. <br /> Each ground water sample will be extracted by lowering a polyethylene bailer through the hollow <br /> „r center of the sample rods into the screen section. Samples for TPH-g, BTEX, and lead scavengers <br /> analysis will be collected into laboratory-supplied, 40-m1 VOA vials containing 0.5-m1 of <br /> hydrochloric acid as sample preservative. Samples for TPH-d analysis will be collected into <br /> laboratory-supplied, l liter amberbottles without sample preservative.Samples for total lead analysis <br /> will be collected into laboratory-supplied, 16-oz plastic bottle,containing 5 milliliters of nitric acid <br /> as sample preservative. <br /> V <br /> Appropriately sealed and labeled samples will be placed in a chilled container under ice and <br /> transported under chain-of-custody procedure to a DHS-certified laboratory.Each sample container <br /> will be labeled with the boring designation, time, date and sampler's initials. <br /> 4.2. MONITORING WELL PILOT BORINGS AND SOIL SAMPLING <br /> Soil borings will be advanced utilizing a truck-mounted,hollow-stem drill rig and 8-inch diameter <br /> `r hollow-stem augers.Cuttings and reinstate generated during drilling activities will be containerized <br /> in properly labeled DOT-approved 55-gallon drums, and stored on-site in an area lacking public <br /> access. Disposal alternatives will be evaluated based on results of soil and water analysis. <br /> Soil samples will be collected from the pilot borings at five-foot intervals beginning at a depth of <br /> 5 feet bsg using a California modified split-spoon sampler fitted with three 2-inch diameter,6-inch <br /> long brass sleeves. Following sample collection, the exposed ends of the leading or other selected <br /> sleeve will be labeled with the boring location, depth, time, date and sampler's initials; the <br /> appropriately sealed and labeled samples will be placed under ice in a chilled container and will be <br /> transported under chain-of-custody to a DHS-certified laboratory for analysis. The soil in the two <br /> remaining sleeves will be visually classified by an AGE geologist in accordance with the USCS and <br /> field-screened for the presence of volatile organic compounds using an OVM. <br /> 4.3. WELL COMPLETION <br /> Following advancement of each pilot boring to total depth, a 2-inch diameter Schedule 40 PVC <br /> 0.020-inch slotted well screen and casing will be installed. A 20-foot section of well screen will be <br /> installed in each of the proposed shallow monitoring wells. The bottom of the screen interval will <br /> be placed approximatlyl5 feet below the water table. However, based on geologic/hydrogeologic <br /> conditions the screen length and placement may be modified with EHD approval. <br /> �r Advanced GeoEnvironmental,Inc. <br /> V <br />