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' 14 October 2004 <br /> AGE-NC Project No 03-1055 <br />' Page 4 of 6 <br />' Field sheets and data are included in Appendix C Purged water was stored on-site in properly <br /> labeled, 55-gallon, DOT-approved drums <br />' 2 2 2 Collection and Analysis of Ground Water Samples <br />' Water samples were collected from each well using a disposable plastic bailer after allowing the <br /> wells to achieve a minimum 80%recovery of the pre-purge water volume Each water sample was <br /> transferred into laboratory-supplied 40-milliliter (ml) volatile organic analysis (VOA) vials <br />' containing 0 5 ml hydrochloric acid solution as preservative, and one i-liter amber bottle without <br /> preservative After collection, the samples were properly labeled,placed in a chilled container, and <br /> transported under chain-of-custody to CTEL for analysis The samples were analyzed for <br />' • TPH-g and TPH-d in accordance with EPA Method 8015M, and <br /> • BTEX, MTBE, and fuel additives DIPE, ETBE,MTBE, TAME, TBA, 1,2-DCA, and EDB <br /> in accordance with EPA Method 8260 <br /> 3.0. FINDINGS <br /> Soil stratigraphy, ground water elevation, flow direction, and gradient were determined from field <br /> data The contaminant impact to soil and ground water was quantified from laboratory analytical <br /> Idata <br /> 31 STRATIGRAPHY <br /> In general, orange-brown, clayey silts to sandy silts, with low to moderate plasticity and toughness <br /> and van able moisture content were encountered from surface grade to approximately 20 feet bsg <br /> An orange-brown, dry to slightly moist silty clay was encountered at approximately 20 feet bsg in <br /> MW-6 A discontinuous layer of saturated clay with hydrocarbon odor was encountered at <br /> approximately 15 feet bsg in MW-6 In addition, hydrocarbon odor was detected in the soil sample <br /> collected at 10 feet bsg in MW-6 (See Appendix B for boring logs) <br /> Advanced GeoEnvironmental,Inc <br /> I <br />