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1 <br /> 1 I�«NA <br /> Working To Restore Nature <br /> The boring will be advanced to approximately 87 feet below surface grade, a maximum depth <br /> of 15 feet below the water table and completed as a groundwater monitoring well Cored soil <br /> ' samples will be collected for lithologic description above the water table at 5 foot intervals and <br /> below the water table at selected intervals in accordance with RESNA's Soil Sampling Protocol <br /> (Appendix III) Two soil samples will be collected for laboratory analysis, one of which will <br /> ' be collected from the capillary fringe soils, approximately 72 feet below surface grade The <br /> proposed location of the well is shown on Figure 4 <br /> ' Cored samples will be collected in brass sleeves with a modified California split spoon sampler <br /> Sample sleeves will be sealed with teflon tape and a plastic cap, sealed in plastic bags and <br /> transported to the laboratory under strict chain-of-custody on ice in an airtight cooler Samples <br /> ' will be analyzed for BTEX by EPA method 8020 and TPHg by EPA method 8015 by Argon <br /> Mobil Laboratory, certification no 1873 <br /> ' <br /> All drill cuttings will be placed on visqueen, covered with same, and retained on-site pending <br /> laboratory analysis of samples for characterization for disposal <br /> ' The monitoring well will be constructed of 4-inch diameter F480 PVC well screen/casing and <br /> completed as shown on Figure 5 Well screen slot size will be 0 010 inch, and filter pack will <br /> be 2112 Lonestar Silica sand or its equivalent A bentonite seal will be placed above the filter <br /> pack with an annular seal of neat cement A street-grade christy box and a locking cap will be <br /> used to finish the well <br /> ' Subsequent to well installation, the wellheads of the new monitoring well and the facility well <br /> will be surveyed vertically to the site datum and the survey data will be tied to the existing well <br /> on-site Depth to water readings will be collected for gradient direction and magnitude <br /> ' confirmation The well will be developed in accordance with RESNA QA/QC and Development <br /> Protocol (Appendix III) <br /> Activities involving potential contact with hazardous substances (i e , petroleum hydrocarbon <br /> contaminated soil, water) will be conducted in accordance with RESNA's site specific Health <br /> ' and Safety Plan (Appendix IV) <br /> After well development, water samples will be collected in accordance with RESNA's QA/QC <br /> ' Groundwater Sampling Protocol (Appendix III) Stabilization of pH, temperature and <br /> conductivity will be verified prior to sample collection to ensure samples are representative of <br /> formation water Samples will be collected with sterile teflon bailers, placed in sealed glass <br /> ' bottles, labeled and transported on ice to Argon Mobile Laboratory, certification no 1873 All <br /> samples will be transported under strict chain-of-custody in an airtight cooler Purged water <br /> from well development will remain on-site in approved DOT 55-gallon drums pending laboratory <br /> M 1150066111EPORTSMP-0794 FNL 5 <br />