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.sem' <br /> M.M, ,-7^` <br /> i <br /> EVAX Project 2260-03 <br /> 6 May 1991 <br /> Soil Analyses <br /> Laboratory analyses results of sail samples are summarized in Table 1. <br /> !Detectable hydrocarbon concentrations were found in soil samples taken <br /> from the boring of MW-25. Maximum concentrations of 4,800 ppm TPHg, 7.1 <br /> ppm B, 95 ppm T, 42 ppm E, and 220 ppm X were found in a sample taken at <br /> a depth of 40.5 feet below ground surface. Minimum concentrations (i.e., <br /> <1.0 ppm TPHg, <0.005 ppm B, 0.007 ppm T, <0.005 ppm E, and 0.033 ppm X) <br /> were found in a sample taken at a correAponding depth of 60.5 feet near <br /> the current groundwater level. Field and laboratory data (Table 1 and <br /> Appendix B) indicate hydrocarbon impact of soils decreases below a depth <br /> of approximately 60 feet with proximity to groundwater. <br /> No TPHg or BTEX was detected in soil samples from the boring of VW-26; <br /> except for a sampl taken at a depth of 40.5 feet below ground surface. <br /> The 40.5-foot level sample contained: 580 ppm TPHg, <0.005 ppm B, 3.5 ppm <br /> T, <0.005 ppm E, and 14 ppm X. Hydrocarbon impact of soils in the <br /> vicinity of VW-2b is less widespread than in the vicinity of MW-25 (Table <br /> 1 and Appendix B). <br /> y Water Analyses <br /> Results of the gropindwater sampling event of MW-25 for April 3, 1991 are <br /> presented in Table 2. No floating product, sheen, or other visible <br /> evidence of hydrocarbon products was observed in the well . No TPHg, <br /> TPHd, or BTEX was detected in water sampled from the well. Laboratory <br /> detection limits were reported at 50 part per billion <br /> ie ppb for TPHd, and 0.5 ppb for each of the BTEX constituents for TPHg, 100 <br /> m <br /> w; <br /> - 5 - <br /> =C <br />