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01 June 1999 <br /> AGE-NC Project No. 99-0608 <br /> Page 4 of 6 <br /> • TPH-g, TPH-d, and TPH-mo by EPA Method 8015 Modified/5030; and <br /> • BTEX by EPA Method 8020. <br /> Laboratory reports for ground water 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 the findings and recommendation <br /> 3.5. MASS BALANCE CALCULATION <br /> Upon completion of field work, if appropriate, the data gathered will be evaluated to determine an <br /> approximate volume of remaining hydrocarbons in soil/and or ground water. <br /> 3.6. 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 and applicable recommendations <br /> will be included in the report. The report will be in a format acceptable to the PHS-EHD and the <br /> 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 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 /> 4.2. SOIL SAMPLING PROCEDURES <br /> Advanced Cto£nv ironnscntal,Inc. <br />