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8 November 1995 <br /> AGE-NC Project No 95-0130 <br /> Page 4 of 7 <br /> E <br /> 3 3 BORING COMPLETION € <br /> E <br /> Bonngs MW-4 and MW-5 will be completed as 2-inch diameter ground water monitoring wells using <br /> 20 feet of slotted PVC casing Ground water monitoring well design is illustrated in Figure 3 <br /> Borings VW-1 through VW-3 will be cluster-completed as 2-inch diameter soil vapor extraction <br /> (SVE) wells using three PVC casings, slotted at independent intervals Soil vapor extraction well <br /> design is illustrated in Figure 4 <br /> 3 4 LABORATORY ANALYSIS <br /> Selected soil samples will be analyzed for TPH-g, and BTE&X in accordance with EPA methods <br /> 5030/8015 and 8020, respectively Selected samples will also be transmitted to a microbiological <br /> laboratory for physicochemical analysis and microbiological enumeration to determine existing <br /> bacteria populations <br /> Laboratory reports of 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 the <br /> findings and recommendations <br /> i <br /> 3 5 SOIL VAPOR EXTRACTION PILOT TEST <br /> Upon completion of drilling and sampling, a soil vapor extraction (SVE) pilot test will be performed <br /> in order to determine remedial feasibility An internal combustion (IC) driven engine will be used to <br /> apply a vacuum on one of the SVE wells while the flow on other wells is measured The duration <br /> of the SVE pilot test will be approximately 8-hours Soil vapor samples will be collected in Tedlar <br /> bags and analyzed for TPH-g and BTE&X at a laboratory Results of the SVE pilot test will be <br /> included in a CAP <br /> Soil vapor field parameters and analytical results will facilitate the design of the SVE system and will <br /> be used to determine the number of vapor wells, the spacing of the wells and the selection of a vapor <br /> remediation system (i a internal combustion, thermal oxidation, etc ) The selection of a vapor <br /> remediation system will be determined by evaluating the concentrations of extracted hydrocarbon <br /> vapor and the estimated supplemental fuel requirements for each of the vapor remediation systems <br /> The determination of these parameters are absolutely necessary for the design and implementation <br /> of a SVE system that can meet the remediation objectives <br /> s <br />