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3 , <br /> 03 September 2004 <br /> AGE-NC Project No 98-0448 <br />' Page 3 of 13 <br /> ` r <br /> I • EPA Method 8020 for volatile aromatic compounds benzene, toluene, ethylbenzene and <br /> xylene (BTEX), and <br /> • EPA-Method 5030/8260 for 1,2-dichloroethane (1,2-DCA), ethylene dibromide (EDB), <br />' tertiary butanol (TBA), di-isopropyl ether (DIPE), ethyl tert butyl ether (ETBE), tert amyl <br /> methyl ether(TAME), and methyl tert-butyl ether (MTBE) <br /> The results of the soil analyses are contained in Table 1 <br /> I2 2 EQUIPMENT DECONTAMINATION <br /> The hollow stem augers were steam cleaned prior to bore hole advancement Sampling tools and <br /> brass sleeves used for sample collection were thoroughly washed with a solution of Alconox, and <br /> were thoroughly rinsed with clean tap water prior to each sampling run At the conclusion of field <br /> activities,all rinseate generated from decontaminating the equipment was placed in properly labeled <br /> Department of Transportation(DOT)-approved model 17H 55-gallon drums and was stored on-site <br /> in an area lacking public access <br />' 23 SOIL BORING LOGS <br /> During drilling,sample duplicates were monitored for the presence of organic vapor using an organic <br /> I vapor analyzer (OVA) equipped with a photo-ionization detector (PID Thermo Environmental <br /> 580B, 10 0 eV, calibrated to isobutylene) and were visually described on boring logs iii accordance <br /> with the Unified Soil Classification System (USCS) Boring logs are included in Appendix B <br /> IGeneral lithology beneath the site is depicted in cross sectional view on Figure 3 <br /> 2 4 MONITORING WELL COMPLETION , <br /> Soil borings for VW-6 and AW-5 were single-completed as SVE and IAS wells, respectivcly, <br /> utilizing schedule 40, 2-inch diameter blank and perforated (0 020-inch) polyvinylchloride (PVC) <br /> well casing <br /> IEach well was installed by placing the`PVC well casing assembly through the hollow stem of the <br /> f augers to the total depth of the boring The augers were incrementally raised from VW-6 and AW-5 <br /> I as a No 2112 Lonestar Lapis Luster sand (filter pack)was slowly poured down the annulus between <br /> the well casing and the inner wall of the hollow stem,auger The filter pack was placed adjacent to <br /> • the screened casing from the bottom of the boring to a point approximately two feet above the top <br /> Advanced GeoEnvironmental,Inc <br />