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I <br /> 18 September 1998 <br /> AGE-NC Project No 95-0173 <br />' Page 2 of 8 <br />' by an AGE staff geologist <br /> Soil samples were preserved by covering both ends of the second brass sleeve with Teflon sheets, <br /> 1 capping and sealing with tape Each preserved sample sleeve was labeled with soil boring location, <br /> depth,time, date and sampler's initials and placed in a chilled container under ice <br />' Each preserved sample was logged on a chain-of-custody, transported to a State of California <br /> Department of Toxic Substances Control (DTSC) certified laboratory and analyzed in accordance <br />' with <br /> • EPA Method 5030/8015M for total petroleum hydrocarbons quantified as gasoline and diesel <br />' (TPH-g and TPH-d, respectively)„ <br /> • EPA Method 8020 for volatile aromatics (benzene, toluene, ethyl benzene and xylene <br /> 1 BTEX) with methyl-tertiary butyl ether(MTBE), and <br /> • EPA Method 8260 modified for tertiary butanol (TBA), di-isopropyl ether(DIPS), ethyl tert <br /> butyl ether(ETBE)and tert amyl methyl ether(TAME), and to confirm and quantify MTBE <br /> if detected by EPA Method 8020 <br /> The results of the soil analyses are contained in Table 1 <br /> 2 12 Equipment Decontamination <br /> Hollow stem augers used during drilling activities were steam cleaned prior to advancement in each <br /> bore hole Sampling tools and brass sleeves used for sample collection were thoroughly washed in <br />' a solution of Alconox and rinsed with clean tap water prior to each sampling run Following drilling <br /> activities, rinseate generated from decontaminating the equipment was placed in properly labeled <br /> D O T model 17H 55-gallon drums and was stored on-site in an area lacking public access <br /> 213 Logging <br /> Durmg drilling activities, sample duplicates were monitored for the presence of organic vapor (OV) <br />' using an organic vapor meter equipped with a photo-ionization detector (PID Thermo <br /> Environmental 580A, 10 0 eV, calibrated to isobutylene) and were described on boring logs using <br /> the Unified Soil Classification System (USCS) Boring logs are included as Appendix A <br /> • <br /> Advanced GeoEnvlronmental,Inc <br /> 1 <br />