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06 November 1997 <br /> AGE-NC Project No. 97-0347 <br /> . Page 2 of 4 F <br /> :. 43 feet, 46 feet, 50 feet,-55 feet, 60 feet and.64 feet bsg. ,All samples were collected using the <br /> !�. Geoprobe soil sampling assembly loaded•.wrth folio 1.125 inch by 6-inch brass sleeves. After sample' <br /> retrieval,the ends of the second brass sleeve were covered with aluminum sheets, capped and sealed <br /> with tape: The sleeves were; labeled, placed -in a chilled container and -selected samples were <br /> _ transported to Alpha Analytical Laboratories, Inc (AAL), under chain Tof custody. . <br /> Free ground water.was not encountered.during probing, therefore,, a grab water sainple was-..not <br /> e.; collected. T - <br /> All sainpiing tools and sanlple�liners used for sample collection were:thoroughly rinsed with clean <br /> water, after washing with a solution of Alcon6x, between each sampling.ruin. The probing was <br /> backfilled over the entire depth with portland'cemeilt. _ Y <br /> 3.2. LOGGING Y <br />` Soil was extruded from the remaining'brass sleeves and screened.for;the presence of.orgame vapor. <br /> using an organic vapor meter equipped with _a photo-ionization= detector (PTD: Thermo <br /> Environmental 580A, 10 OeV, calibrated to isobutylene) aiid.the readi.iigs were recorded on.the <br /> boring logs. Soil was described 'nac' the Unified Soil Classification :System,(see' <br /> Boring Log, Appendix•A) <br /> I 3.3. LABORATORY,ANALYSIS <br /> ,. <br /> f A total of five�soil samples were arialyzed'for total petroleum hydrocarbons quailtifiedias gasoline <br /> (TPH-g) in accordance with method-GCFID/5030'-and for,:volatile aromatics-(benzene,-toluene, <br /> ethylbeivene and xylenes; l3TL&X) in accordance_with..FPA'method.80.20%602.Two samples were <br /> :j also analyzed for volatile organic compounds with oxygenated,compounds in accordance with EPA <br /> tow methods 8260 and 8015m. - <br /> 4.0. FINDINGS - s <br /> 4.1.' STRATIGRAPHY'": <br /> L <br /> Silt to sandy silt«vas encountered in samples collected from depths of,5 feet bsg to`35 feet bsg and <br /> from 46 feet through 64.feet bsg. Silty clay was encountered in sarriples collected-at depths of 40�and <br /> 43 feet bsg. The boring log is included in Appendix A., <br /> Advanced Gc.oEn'ironnlentaf,1ne. _ <br />