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03 August 2001 <br /> AGE-NC Project No. 99-0641 <br /> Page 5 of 6 <br /> 4.2. SOIL SAMPLING PROCEDURES <br /> Soil samples will be collected using Geoprobe push-driven 2-inch diameter sampler containing four <br /> six-inch long brass sleeves. Upon removal from the sampler, the sample sleeves are separated, the <br /> exposed ends of the selected sleeve will be covered with Teflon sheets,capped and sealed with tape. <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 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 transported under chain-of-custody to a DHS-certified laboratory. <br /> 4.3. IN-SITU GROUND WATER SAMPLING PROCEDURES <br /> To collect the grab ground water sample, the soil probe boring will be advanced to the top of the <br /> ground water table as identified by collection of a saturated soil sample or observation of free water <br /> on sampling equipment. Once ground water has been encountered, a Geoprobe push-driven water <br /> sampling device will be advanced two to three feet into the water-bearing zone. The grab ground <br /> water sample will be collected using a Geoprobe water sampling assembly fitted with a pre-cleaned <br /> one-inch diameter 0.01 slotted temporary well screen. Each ground water sample will be extracted <br /> Ely 1Vw�11ii�'-d.�J+SdyCLSI�iCI!G iia3lti iiLiUU�il ii1G ii�ii11JV Celkic:l Ut CiiG 1Jil;ti L1711S J1tiO3 t1lc,•Wit;iri4' L:Cii-;i, <br /> Samples for volatile organic compound analyses will be collected into laboratory-supplied, 40-m1 <br /> VOA vials containing 0.5 ml of hydrochloric acid as sample preservative. The labeled sample <br /> containers will be placed in a chilled container under ice and transported under chain-of-custody to <br /> a DHS-certified laboratory. <br /> 4.4. EQUIPMENT DECONTAMINATION <br /> All sampling tools used for sample collection wilt be thoroughly washed with a solution of Alconox <br /> and rinsed with clean water prior to each sampling location. All probing rods will be cleaned prior <br /> to advancement at each probe boring location. <br /> Advanced GeoEnvironmental,Inc. <br />