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25 September 2002 <br /> AGE-NC Project No. 99-0581 <br /> Page 4 of 5 <br /> The proposed probe boring locations are illustrated in Figure 3. Field procedures for advancement <br /> of probe borings and collection of soil samples are presented in Sections 4.1 and 4.2. <br /> Selected soil samples from each probe boring will be submitted for laboratory analysis.The selected <br /> soil samples will be analyzed by a State of California Department ofHealth Services(DHS)-certified <br /> laboratory for one or more the following constituents: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and motor oil (TPH-mo) in <br /> accordance with EPA Method 8015M; <br /> • Volatile organic compounds,including benzene,toluene,ethylbenzene and xylenes(BTEX), <br /> and methyl tertiary-butyl ether(MTBE) in accordance with EPA Method 8260; and <br /> • CAM 17 Metals in accordance with EPA Method 6010B. <br /> Laboratory reports for soil analyses, testing methods, laboratory quality assurance/quality control <br /> (QA/QC) reports, and sample chain of custody documentation will be presented in a report with <br /> findings and recommendations. <br /> 3.3. 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. <br /> 4.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision of California <br /> Registered Geologist. Procedures for the advancement of borings, soil sampling, ground water <br /> sampling, equipment decontamination and sample shipment are outlined below. <br /> 4.1. PROBE BORING ADVANCEMENT <br /> 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 depths. <br /> Advanced GeoEnvironmental,Inc. <br />