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i <br /> 17 May 1999 <br /> AGE-NC Project No 96-0249 <br /> Page 2 of 9 <br /> I MW-2 through MW-6 and beginning at 15 feet bsg from MW-1 Soil samples were collected <br /> utilizing a California split-spoon sampler loaded with 2-inch by 6-inch brass sleeves The sampler <br /> was driven by dropping a 140-pound weight from a height of 30 inches The number of blows <br />' required to drive each 6-inch length of the sampler (blow counts) was recorded on boring logs by <br /> an AGE staff geologist <br /> I Soil samples were preserved by covering both ends of the second brass sleeve with Teflon sheets, <br /> capping and sealing with tape Each preserved sample sleeve was labeled with soil boring location, <br /> depth, time, date and sampler's initials <br />' Each preserved sample was logged on a chain-of-custody form, placed in a chilled container and <br /> transported to a California Department of Health Services (DHS)-certified laboratory for analysis <br />' in accordance with <br /> I • EPA Method 5030/8015M for total petroleum hydrocarbons quantified as gasoline and diesel <br /> (TPH-g and TPH-d, respectively), <br /> • EPA Method 8020 far volatile aromatics(benzene,toluene,ethylbenzene and xylene BTEX) <br /> with methyl-tertiary butyl ether(MTBE), and <br /> EPA Method 8260 modified for tertiary butanol (TBA), dl-isopropyl ether (DIPS), ethyl tert <br /> butyl ether (ETBE), tert amyl methyl ether (TAME), and confirmation of MTBE <br />' The results of the soil analyses are contained in Table I <br />' 2 1 2 Equipment Decontamination <br /> The hollow stem augers were steam cleaned prior to each bore hole advancement Sampling tools <br /> and brass sleeves used for sample collection were thoroughly washed with a solution of Alconox, <br /> and were thoroughly rinsed ,pith 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 -approved model 17H 55-gallon drums and was stored on-site in an area Iacking public <br /> access <br /> 213 Logging <br /> During drilling activities, sample duplicates were monitored for the presence of organic vapor using <br /> an organic vapor meter equipped with a photo-ionization detector (PID Thermo Environmental <br /> Advanced GeoEnvironmental,Inc <br />