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l <br /> 06 November 2002 <br /> AGE-NC Project No 98-0432 <br />' Page 2of8 <br />' a height of 30 inches The number of blows required to drive each 6-inch length of the sampler(blow <br /> counts) was recorded on boring logs by an AGE staff geologist, boring logs are in Appendix A <br />' Soil samples were preserved by covering both ends of second brass sleeve with Teflon sheets, <br /> capping and sealing with tape Each preserved sample sleeve was labeled with soil boring <br /> designation, depth, time, date and sampler's Initials <br /> Following sample collection,each preserved sample was logged on a chain-of-custody form,placed <br /> in a chilled container and transported to a California Department of Health Services(DHS)-certified <br />' laboratory for analysis for <br /> • Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d, <br />' respectively)by EPA Method 8015 Modified, <br /> • Benzene,toluene,ethylbenzene and xylene(BTEX)and methyl-tertiarybutyl ether(MTBE) <br /> by EPA Method 8020 and <br />' 0 The fuel additive compounds di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), <br /> MTBE, tertiary-amyl methyl ether (TAME), tertiary butanol (TBA), methanol, ethanol, <br /> ethylene dibromide (EDB) and 1,2-dichloroethane (1,2-DCA) in accordance with EPA <br /> Method 8260 Modified <br /> 1 <br /> 212 Logging <br />' During drilling activities, soil sample duplicates were monitored for the presence of organic vapor <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 visually described on boring logs <br /> in accordance with the Unified Soil Classification System (USCS) The boring log and as-built <br /> diagram for boring MW-9 and EW-1 is included as Appendix A <br /> 2 13 Equipment Decontamination <br />' The hollow stem augers were steam-cleaned prior to advancement of the soil pilot boring 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 All <br /> sampling equipment was washed in an Alconox solution and nnsed twice with water prior to each <br /> sampling run Following drilling activities,rinseate generated from decontaminating the equipment <br /> was placed in properly labeled DOT-approved model 17H 55-gallon drums and placed in the <br /> southeast portion of the site <br /> Advanced Geo E nviron mental,Inc <br /> I <br />