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25 July 2001 <br /> AGE-NC Project No. 98-0452 <br /> Page 3 of 4 <br /> 3.4. REPORT PREPARATION <br /> Upon completion of field work and receipt of final laboratory analysis, a report will be prepared <br /> presenting the findings of the investigation. The report will include a description of the work <br /> performed and results of the sampling and analysis. Conclusions, applicable recommendations, and <br /> maps will be included in the report. The report will be in a format acceptable to the PHS-EHD. <br /> 4.0. 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 borings, soil and ground water sampling, <br /> equipment decontamination and sample shipment are outlined below. <br /> 4.1. PROBE BORING ADVANCEMENT <br /> The probe borings will be advanced using a 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 /> hammer to drive soil sampling tools to specified sampling depths. Soil cuttings are not generated by <br /> this method. <br /> 4.2. GRAB GROUND WATER SAMPLING PROCEDURES <br /> For the collection of grab ground water samples, the probe borings will be advanced to a depth of <br /> four feet below the ground water surface. The grab ground water samples will be collected using a <br /> Geoprobe water sampling assembly with a wire-wound steel screen or a pre-cleaned one-inch <br /> diameter, 0.01-inch slotted screen. The ground water samples will be extracted by lowering a Teflon <br /> bailer through the hollow center of the push rods into the screened section. The samples will be <br /> collected in laboratory-supplied, 40-m1 VOA vials containing 0.5 ml hydrochloric acid as sample <br /> preservative. The labeled vials will be placed in a chilled container under ice and transported under <br /> chain-of custody to a DHS-certified laboratory. <br /> 4.3. EQUIPMENT DECONTAMINATION <br /> Prior to use, all sampling tools used for sample collection will be thoroughly rinsed with clean water <br /> after being washed with a solution of Alconox. All probing rods will be cleaned prior to <br /> advancement at each probe boring location. <br /> Advanced GeoTnvironmen[al,Inc. <br />