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s <br /> 22 May 2001 <br /> AGE-NC Project No 95-0167 <br /> ' Page 6 of 10 <br /> 0 TPH-g by EPA Methods 8015 Modified <br /> • BTEX and MTBE by EPA Method 8020 and <br /> ia Methanol, ethanol, EDB, 1 2-DCA, TBA,DIPE, ETBE, TAME and MTBE by EPA Method <br /> 8260 Modified <br /> 3.0 FINDINGS <br /> Soil descriptions were utilized to construct geologic cross sections of the site, field data was utilized <br /> to select soil samples for laboratory analysis Petroleum hydrocarbon-impact to saturated and <br /> unsaturated soil was assessed and quantified by laboratory analysis <br /> Ground water elevation, flow direction and gradient were determined from field data collected on <br /> ' 15 November 2000, the contaminant impact to ground water was assessed from the ground water <br /> sample laboratory data <br /> 3 1 SITE STRATIGRAPHY <br /> ' Generally,brown/gray, moist, silt was encountered at depths of 5 to 20 feet bsg Brown/gray, damp <br /> to moist, sand was encountered at depths of 20 to 30 feet bsg, some gravel and medium sand was <br /> observed at 30 feet bsg At depths between 30 and 40 feet bsg, a gray/blue, moist, silty clay was <br /> encountered <br /> Saturated soil was observed in soil sample duplicates collected at 15 feet bsg in the soil borings, <br /> ground water levels were only measured in wells MW-5 and MW-6 at approximately 15 feet bsg <br /> utilizing a Solinst water level meter during well installation activities Boring logs are in Appendix <br /> A General lithology beneath the site is depicted in cross-scetional view A-A ' in Figure 3 <br /> 3 2 HYDROCARBON-IMPACTED SOIL <br /> A total of eleven soil samples were analyzed for TPH-g, BTEX, and fuel additives including MTBE <br /> _ in accordance with EPA Methods 8015 Modified, 8020 and 8260 Modified - - - --- <br />' Monitoring Well Pilot Boring Samples <br /> • TPH-g, BTEX compounds and MTBE were not detected in the soil samples analyzed <br /> Advanced GeoEnvironmental,ine <br />