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?. . . "K" <br /> 18 July 2008 { <br /> AGE-NC Project No. 95-0137 <br /> Page 4 of 6 <br /> • Total petroleum hydrocarbons as diesel (TPH-d) in accordance with T017; -� <br /> • Volatile organic compounds (VOCs) to include: benzene, toluene, ethylbenzene and total <br /> xylenes(BTEX)and the fuel oxygenates Methyl-tertiary-Butyl Ether(MTBE),tertiary-Amyl <br /> Methyl Ether (TAME), Di-isopropyl Ether (DIPE), tthyl=tertiary-Butyl Ether (ETBE), <br /> J� tertiary-Butyl Alcohol(TBA),1,2-Dibromoethane(EDB)and 1,2-Dichloroethane(1,2-DCA) <br /> -----'by 15/EPA Methods 8260B. " ly .� ✓'��- -�'l�r <br /> ,JkLaboratory reports for soil vapor analyses, testing methods, laboratory quality assurance/quality <br /> �{ . control(QA/QC)reports, and sample chain of custody documentation will be presented in a report <br /> with findings and recommendations. <br /> 2.3. REPORT PREPARATION <br /> Upon completion of fieldwork,a report will be prepared presenting the findings of the investigation. <br /> The report will include a description of the work performed,results of the sampling and laboratory <br /> analysis, the Central Valley Regional Water Quality Cortrol Board (CVRWQCB) required <br /> evaluation of samples to the San Francisco Regional Water Quality Control Board (SFRWQCB) <br /> Environmental Screening Levels (ESLs), and if required the"results for a site indoor air exposure <br /> pathway model (Johnson and Ettinger). Conclusions and applicable recommendations will be <br /> included in the report. The report will be in a format acceptable to the CVRWQCB guidelines, and <br /> will be reviewed and signed by a California Professional Geologist. <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/destruction of soil probe borings,soil vapor <br /> sampling, equipment decontamination and sample shipment :are outlined below. <br /> 3.1. PROBE BORING ADVANCEMENT ►o -�� <br /> Each probe boring will be advanced to a depth of approximately four feet bsg using a van-mounted <br /> Geoprobe 5400 direct-push probing unit equipped with 1.25 finch, stainless steel, hollow probing <br /> rods. The Geoprobe rods are advanced using a hydraulic hammer to drive the attached soil vapor <br /> sampling tool to specified depths. <br /> Advanced GeoEnvironmental,Inc. y <br /> N 'j l <br />