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21 July 1999 <br /> AGE-NC Project No. 99-0611 <br /> Page 3 of 4 <br /> will be included in the report. The report will be reviewed and signed by a California Registered <br /> Geologist prior to submittal to the PHS-EHD. <br /> 3.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision of a California <br /> Registered Geologist. Procedures for the advancement of probe borings, soil sampling, ground water <br /> sampling, equipment decontamination and sample shipment are outlined below. <br /> 3.1. PROBE BORING ADVANCEMENT <br /> Probe borings will be advanced using a Geoprobe 5400 direct-push probing unit equipped with <br /> 1.25-inch probing rods. The Geoprobe advances soil probe borings using a hydraulic or pneumatic <br /> hammer to drive soil and ground water sampling tools to specified depths. <br /> 3.2. SOIL SAMPLING PROCEDURES <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 four-foot long Teflon <br /> sleeve, respectively. Upon removal from the sampler, the sample sleeve will be separated with a <br /> clean soil knife. The exposed ends of the sleeve will be covered with Teflon sheets, capped and <br /> sealed with tape. Soils encountered in the borings will be visually classified by an AGE geologist <br /> in accordance with the Unified Soil Classification System (USCS). Additionally, soil samples with <br /> be field screened for 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 procedure to a DHS-certified <br /> laboratory. <br /> 3.3. EQUIPMENT DECONTAMINATION <br /> All sampling tools used for sample collection will be thoroughly washed with a solution of Alconox <br /> and rinsed with clean water. All probing rods will be cleaned prior to advancement at each probe <br /> boring location. <br /> Advanced CeoEnvironmental,Inc. <br />