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17 March 2003 <br /> AGE-NC Project No. 01-0886 <br /> Page 4 of 5 <br /> Selected soil samples from the 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 the following constituents: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015 Modified, <br /> • Volatile aromatic hydrocarbons: benzene, toluene, ethyl benzene and total xylene (BTEX) <br /> in accordance with EPA methods 8020/8260 and <br /> Two soil samples for fuel additives: di-isopropyl ether (RIPE), ethyl tertiary-butyl ether <br /> (ETBE), methyl tertiary-butyl ether(MTBE), tertiary-amyl methyl ether (TAME), tertiary <br /> butanol(TBA),ethylene dibromide(EDB)and 1,2-dichloroethane(1,2-DCA)in accordance <br /> with EPA Method 8260 Modified. <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 /> U--)n 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,maps <br /> and cross-sections will be included in the report. The report will be in a format acceptable to the <br /> EHD and the CVRWQCB, and will be reviewed and signed by a California Registered Geologist. <br /> 4.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE geologist or representative under the supervision <br /> of a California Registered Geologist. Procedures for the advancement of borings, soil sampling, <br /> ground water sampling, equipment decontamination and sample shipment are outlined below. <br /> 4.1. PROBE BORING ADVANCEMENT <br /> A probe boring 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 />