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13 August 1997 <br /> AGE-NC Project No. 97-0330 <br /> Page 5 of 6 <br /> Selected samples will be analyzed for TPH-d and BTEX in accordance with EPA method <br /> 8015M and 8020/602, respectively. Prior to laboratory analysis, the PHS-EHD will be given <br /> an opportunity to review samples selected for analysis. <br /> • Backfill each probing to surface grade using Portland Type II Cement. <br /> 4.2. WELL COMPLETION <br /> For the Installation of ground water monitoring wells, the following procedures will'be performed: <br /> • Ground water monitoring wells will be completed using 2-inch diameter PVC casing with a <br /> 20-foot screened interval. Blank PVC screen (Schedule 40) will be used from surface grade <br /> to the top of a screened interval. A filter pack will be installed using# 3 sand from bottom <br /> of screened depth to two feet above, and a 3-foot bentonite plug placed on top of filter pack. <br /> Each well will then be backfilled to the surface utilizing a tremie method with Portland Type <br /> 11 cement (Figure 3). <br /> 4.3. GROUNDWATER MONITORING WELL SAMPLE COLLECTION <br /> For the collection of ground water monitoring well samples, the following procedures will be <br /> performed: <br /> • Ground water monitoring wells will be developed using a submersible pump until ground <br /> water appears to be sediment free. At least three well volumes of water will be removed from <br /> each well to stabilize temperature, pH, and conductivity. Ground water samples will be <br /> collected using disposable bailers and new nylon rope; samples will be collected in 40-m1 <br /> VOA vials and one-liter amber bottles. <br /> • Store,the samples in a chilled container and transport under chain-of-custody protocol to a <br /> state-certified laboratory for analysis. Ground water samples will be analyzed for TPH-d and <br /> BTEX in accordance with EPA methods 8015M and 8020/602, respectively. <br /> • Store purged water in 55-gallon DOT drums on-site pending analytical results. <br /> 4.3. REPORT PREPARATION <br /> Upon completion of drilling activities, sampling and laboratory analysis, a report will be prepared <br /> summarizing results of the work performed. The report will include recommendations for additional <br /> Advanced GeoEnvirolulient:ll,Hic. <br />