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' 10 February 2006 <br /> • AGE-NC Project No 02-0977 <br />' Page 6 of 12 <br />' 3.0. FINDINGS <br /> Soil descriptions were utilized to construct geologic cross section C-C' of the site Field data was <br />' utilized to select soil samples for laboratory analysis and to determine ground water flow direction <br /> and gradient Hydrocarbon impact to soil and ground water was assessed and quantified by laboratory <br /> analysis <br /> 31 STRATIGRAPHY <br />' Generally, medium dense to dense, silty fine sands and unconsolidated fine to medium sands were <br /> encountered at depths between 5 feet and 20 feet bsg,underlain by very stiff to hard, fine sandy silts <br />' at depths between 25 feet and 30 feet bsg At depths between 35 feet and 40 feet bsg,medium dense <br /> to dense,silty fine sand and unconsolidated fine to medium sand was generally encountered underlain <br /> by very stiff to hard, fine sandy, clayey silt at depths between 45 feet and 65 feet bsg Generally, <br />' medium dense to dense, clayey fine sand was encountered at a depth of 70 feet bsg Boring logs are <br /> included in Appendix B General lithology beneath the site is depicted in cross-sectional view C-C' <br /> in Figure 3 <br /> Saturated soil was encountered at approximately 60 feet bsg from B5 and B8,65 feet bsg from MW-8, <br /> and 70 feet from B6,B7 and B9,the ground water level from MW-8 were measured at approximately <br />' 54 feet bsg utilizing a Solinst water level meter <br />' 3 2 FIELD EVIDENCE OF HYDROCARBON-IMPACTED SOIL <br /> Faint hydrocarbon odor was detected from B5 at depths between 40 feet and 70 feet bsg Faint to <br /> intense hydrocarbon odor was detected from B6 (VW-2) and B7 (VW-1) at depths between 30 feet <br /> and 70 feet bsg Faint to moderate hydrocarbon odor was detected from B8(VW-3)at depths between <br />' 25 feet and 65 feet bsg and from B9 (VW-4) at depths between 20 feet and 55 feet bsg No <br /> hydrocarbon odor was noted from MW-8 Hydrocarbon odor observations are documented on the <br /> boring logs in Appendix B <br /> Organic vapor (confirmed with the PID) was detected in soil samples collected from BS at depths <br /> between 40 feet and 70 feet bsg,from B6(VW-2)at depths between 20 feet and 70 feet bsg,from B7 <br /> (VW-1)at depths between 20 feet and 65 feet bsg,from B8 (VW-3)at depths between 25 and 50 feet <br /> bsg and from B9 (VW-4) at depths between 20 and 60 feet bsg No organic vapor was detected from <br /> MW-8 Organic vapor observations are documented in boring logs in Appendix B <br /> Advanced GeoEnvsronmental,Inc <br /> 1 <br />