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i <br /> I10 February 2006 <br /> AGE-NC Project No 02-0977 <br /> IS Page 3 of 12 <br /> • Total petroleum hydrocarbons quantified as gasoline(TPH-g)by LUFT/EPA Method 8015M, <br /> and <br /> • Benzene, toluene, ethylbenzene, xylene (BTEX), 1,2-dichloroethane (1,2-DCA), ethylene <br /> Idibromide (EDB), methyl-tertiary butyl ether(MTBE), di-isopropyl ether(DIPS), ethyl tert <br /> butyl ether(ETBE), tert amyl methyl ether(TAME) and tert butanol (TBA)by EPA Method <br /> 8260B <br /> I <br /> Additionally,two soil samples from soil boring B6(B6-40 and B6-70)and one soil sample from soil <br /> Iboring B7 (B7-35)were analyzed by Cooper Testing for organic content,porosity and permeability <br /> I2 12 Sample Logging <br /> During drilling activities, soil sample duplicates were monitored for the presence of organic vapor <br /> I , using an organic vapor meter equipped with a photo-ionization detector(PID Thermo Environmental <br /> 580, 10 0 eV,calibrated to isobutylene)and were visually described on the boring logs in accordance <br /> with the Unified Soil Classification System(USCS) Boring logs from B5 through B9 and MW-8 are <br />' • included �s Appendix B General lithology beneath the site is depicted in cross sectional view on <br /> Figure 3 <br /> I2 13 Equipment Decontamination <br />' Prior to soil boring advancement, each section of hollow stern auger was pressure washed Sampling <br /> tools and brass sleeves used for sample collection were thoroughly washed with a solution of <br />' Alconox,and were thoroughly rinsed with clean tap water prior to each sampling sequence Following <br /> drilling activities, rinseate generated from decontaminating the equipment was placed in properly <br /> labeled DOT-approved model 17H 55-gallon drums and was stored at the site in an area lacking <br /> Ipublic access <br />' 2 14 Monitoring/Soil Vapor Extraction Well Completion <br /> Soil borings for B6 (VW-2), B7 (VW-1), B8 (VW-3) and B9 (VW-4) were each advanced to 70 <br /> feet bsg,thereafter,the void space between 55 and 70 feet bsg from 136(VW-2)and B7(VW-1), the <br /> void space between 54 and 70 feet bsg from 138 (VW-3) and the void space between 50 and 70 feet <br /> bsg from B9 (VW+ were backfilled with 3/8-inch coated bentonite pellets (TR-30 Sinclair) as a <br /> bottom seal <br /> Advanced GeoEnvironmental,Inc <br /> I u <br />