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25 April 2007 <br /> AGE-NC Project No. 95-0106 <br /> Page 3 of 5 <br /> Selected soil samples and the soil-vapor samples from each probe boring will be submitted for <br /> laboratory analysis. The selected soil samples will be analyzed by a State of California Department <br /> of Health Services (DHS)-certified laboratory for one or more the following constituents: <br /> • TPH-g in accordance with EPA Methods 8015M; <br /> • Volatile organic compounds (VOCs) to include BTEX in accordance with EPA Method <br /> 8260B; and <br /> • Fuel additives di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), (MTBE), <br /> tertiary-amyl methyl ether(TAME),tertiary butanol(TBA), 1,2-dichloroethane(1,2-DCA) <br /> and ethylene dibromide (EDB) in accordance with EPA Method 8260B. <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 /> 2.3. 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 /> 3.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision of a California <br /> Professional Geologist. Procedures for the advancement of borings, soil sampling, soil-vapor <br /> sampling, equipment decontamination and sample shipment are outlined below. <br /> 3.1. 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 GcoEnvironmental,Inc. <br />