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07 June 1999 <br /> AGE-NC Project No. 99-0616 <br /> Page 3 of 4 <br /> the total depth of the boring. Field procedures for advancement of probe borings and collection of <br /> soil samples are presented in Sections 4.1 and Section 4.2, respectively. <br /> Selected soil samples will be analyzed by a California Department of Health Services (DHS)- <br /> certified laboratory for the following constituents: <br /> • TPH-g by EPA Method 8015 Modified/5030; <br /> • Benzene, toluene, ethylbenzene, and total xylenes (BTEX)by EPA Method 8020; and <br /> • Fuel oxygenating compounds, including methyl-tert butyl ether (MTBE), ethyl-tert butyl <br /> ether(ETBE),tertiary butanol (TBA), tertiary amyl methyl ether(TAME) and di-isopropyl <br /> alcohol (DIPE) in accordance with EPA Method 8260. <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 brief 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 and applicable recommendations <br /> will be included in the report. The report will be in a format acceptable to the PHS-EHD and will <br /> be signed by a California Registered Geologist. <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 probe borings, soil sampling, ground water <br /> sampling, equipment decontamination, and boring abandonment are outlined below. <br /> 4.1. PROBE BORING ADVANCEMENT <br /> Probe borings will be advanced using AGE's 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 /> or pneumatic hammer to drive soil and ground water sampling tools to specified depths. <br /> Advanced CeoEnvironmental,Inc. <br />