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15 March 2000 <br /> AGE-NC Project No. 00-0704 <br /> Page 2 of 3 <br /> Probe borings will be advanced using AGE's van-mounted Geoprobe 5400 direct-push probing unit <br /> equipped with 1.25-inch probing rods. The Geoprobe advances soil probe borings using a hydraulic <br /> or pneumatic hammer to drive soil and ground water sampling tools to specified depths. <br /> Soil samples will be collected using Geoprobe push-driven 2-inch diameter discrete and/or <br /> continuous core samplers fitted with four six-inch long brass sleeves or a two-foot long Teflon <br /> sleeve, respectively. Upon removal from the sampler, the sample sleeve is separated with a clean <br /> soil knife. The exposed ends of the sleeve will be covered with Teflon sheets,capped and sealed with <br /> tape. Soil samples will be field screened for the presence of volatile organic compounds using an <br /> OVM. <br /> Following sample collection,each preserved sample sleeve will be labeled with the boring location, <br /> depth, time,date and sampler's initials. Appropriately sealed and labeled samples will be placed in <br /> a chilled container under ice and pending transportation to a DHS-certified laboratory. <br /> For the collection of grab ground water samples, soil probe borings will be advanced to the top of <br /> the ground water table as identified by collection of a saturated soil sample. Once ground water has <br /> been encountered,a Geoprobe push-driven water sampling device will be advanced two to three feet <br /> into the water bearing zone. Grab ground water samples will be collected using a Geoprobe water <br /> sampling assembly fitted with a pre-cleaned one-inch 0.01 slotted temporary well screen. Each <br /> ground water sample will be extracted by lowering a Teflon bailer through the hollow center of the <br /> push rods into the screen section. Samples will be collection in laboratory-supplied, 40-m1 VOA <br /> vials containing 0.5-ml of hydrochloric acid as sample preservative and 1-liter amber bottles. The <br /> labeled vials and bottles will be placed in a chilled container under ice pending transportation to a <br /> DHS-certified laboratory. <br /> LABORATORY ANALYSIS <br /> Selected soil and/or ground water samples will be submitted to a DHS-certified laboratory and <br /> analyzed for the following: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in <br /> accordance with EPA Method 8015 Modified/5030; and <br /> • Benzene, toluene, ethylbenzene, and total xylenes (BTEX)by EPA Method 8020. <br /> DECONTAMINATION <br /> All sampling tools used for sample collection will be thoroughly rinsed with clean water after being <br /> Advanced GeoEnvironmental,Inc. <br />