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encountered and sample collection intervals are included on the boring/well logs (Appendix <br /> II) Cored soil samples were collected at five foot intervals using a 2-inch diameter spht- <br /> spoon sampler containing three brass tubes The cored samples and drill cuttings were <br /> characterized for soil type, moisture content, and visual evidence of petroleum contamination <br /> ' A photo ionization detection meter (PID) was used as a field screening device for the detection <br /> of petroleum hydrocarbon vapors in drill cuttings and cored samples Soil samples collected at <br /> approximately 10 5 and 16 feet below grade (the water table interface) were selected for <br /> laboratory analysis <br /> ' Selected soil samples were placed on ice, and transported under chain-of-custody to Argon <br /> Mobile Labs (DHS #1873) for analysis. The samples were analyzed by Argon Mobile Labs <br /> ' for benzene, toluene, ethylbenzene, xylenes (BTEX), total petroleum hydrocarbons as gasoline <br /> (TPHg) and total petroleum hydrocarbons as diesel (TPHd) utilizing EPA 8020 and 8015 <br /> ' methodologies, respectively. The analytical results for soil are summarized in Table 1, <br /> Laboratory data sheets and chain-of-custody documentation are included in Appendix ITT <br /> ' 2 . <br /> M2mtorung Well Construction <br /> Soil borings MW1, MW2, and MW3 were subsequently completed as groundwater monitoring <br /> wells to assess the possibility of groundwater contamination beneath the site, and to provide <br /> ' measurement points for the determination of groundwater flow direction and hydraulic <br /> gradient <br /> ' Each well was constructed with 2-inch PVC casing The screened interval of each well was <br /> positioned from approximately five feet above to 15 feet below the encountered water table to <br /> ' allow for seasonal water level fluctuations. The screen slot size is 0 020-inch Well <br /> construction diagrams are depicted on the bonng/well logs (Appendix 1) <br /> 2;4 Monitoring Well Development <br /> ' Newly installed groundwater monitoring wells MW1, MW2, and MW3 were developed on <br /> October 14, 1994. Each well was purged until the extracted water was relatively sediment <br /> free Development/Purge logs are included as Appendix IV. <br /> 2,5 Fluid Level Measurement/Surveying <br /> After fluid levels had been allowed to stabilize, groundwater levels were obtained from all site <br /> wells on October 14, 1994 Levels were taken utilizing an electronic water probe capable of <br /> measuring with an accuracy of 1/100 of a foot Wellheads were surveyed on October 14, <br /> 15010-ASR-0295 3 CanoweEnvironmental <br /> 1� <br />