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' 11 June 1999 <br /> • AGE-NC Project No 97-0333 <br /> ' Page 5 of 9 <br /> ' an organic vapor meter equipped with a photo-ionization detector (PID Thermo Environmental <br /> 580A, 10 0 eV,calibrated to isobutylene) and were visually described on boring logs in accordance <br /> with the Unified Soil Classification System (USCS) Boring logs are included as Appendix A <br /> tGeneral lithology beneath the site is depicted in cross sectional view on Figures 3 and 4 <br /> t4.0. FINDINGS <br /> Soil descriptions were utilized to construct the cross sections presented in Figures 3 and 4 <br /> Laboratory analysis of seventeen soil samples detected total petroleum hydrocarbons in six samples, <br /> volatile aromatics were detected in seven soil samples, fuel oxygenated compounds were detected <br /> in thirteen soil samples Laboratory analysis of five grab ground water samples detected total <br /> ' petroleum hydrocarbons,volatile aromatics and fuel oxygenated compounds in all five ground water <br /> samples <br /> 41 <br /> SOIL PROFILE <br /> 1� Generally, brown, damp to moist, silty fine sand was encountered from 5 feet bsg to depths of <br /> appiuminarely 15 feet bsg Bctriveen 15 feet bsg and 20 feet bsg a mottled brown and gray, moist <br /> ' to very moist fine sandy silt was encountered At depths in excess of 20 feet bsg, a brawn, moist to <br /> saturated, silty fine sand was encountered <br /> Saturated soil was firs <br /> 1 t encountered at a depth of 20 feet bsg in borings P-I through P-5, ground <br /> water levels were measured at 14 feet bsg utilizang a Geoprobe water le,,el meter Boring logs are <br /> included in Appendix A, general lrthology beneath the site in cross sectional view is depicted on <br /> ' Figures 3 and 4 <br /> i <br /> ' <br /> 42 FIELD EVIDENCE OF HYDROCARBON-IMPACTED SOIL AND GROUND WATER <br /> ' Faint to intense hydrocarbon odor was noted in duplicate soil samples collected from P-1 at depths <br /> bet Ncen 5 feet bsg and 15 feet bsg, bemeen 15 feet bsg and 20 feet bsg from borings P-2 and P-4 <br /> at 10 feet bsg from P-3 and between 10 feet bsg and 20 feet bsg from borings P-5 Petroleum <br /> hydrocarbon odor is noted on boring logs contained in Appendix A <br /> Organic Napor was detected in soil sample duplicates from P-1 through P-5 rising a PID at <br /> ' concentidtions as high as 600 parts per million (ppm) Organic Napor field measurements air <br /> . 5um111diilcd on the t)oring logs contained in Appendix A <br /> 4diancedGeoEn1,irunmen(E1 Ong <br /> { <br />