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, 1 <br /> S I <br /> 1 <br /> i <br /> 03 March 1999 <br /> AGE-NC Project No 95-0142 <br /> Page 2 of 7 r <br /> L <br /> i <br />' Soil samples were collected from the boring at five-foot Intervals, beginning at 5 feet below surface <br /> grade (bsg), using a California split tube sampler loaded with three clean 2-Inch by 6-Inch brass <br /> sleeves A 140-pound hammer was utilized to advance the sampler 18 Inches, the number of blows <br /> iF required to advance the sampler over 6-inch Increments was recorded on the boring logs <br /> Both ends of the soil sleeve of each sample collected for laboratory analysis were covered with , <br />' Teflon sheets, capped and sealed with tape The selected soil samples were stored in a chilled <br /> container and were transported under chain-of-custody to McCampbell Analytical Inc (MAI) a <br /> California Department of Health Services (DHS)-certified laboratory in Pacheco, California and <br />' were then analyzed for <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br />' Method 8015 Modified, <br /> • Volatile aromatic compounds (benzene,toluene, ethyl-benzene and total xylenes, BTEX) in <br />' accordance with EPA Method 8020, <br /> • Fuel oxygenates including methyl tertiary butyl ether(MTBE),tertiary butyl alcohol (TBA), <br /> dl-Isopropyl ether (DIPE), ethyl tertiary butyl ether (ETBE), tertiary amyl methyl ether <br />' (TAME) Including ethanol in accordance with EPA Method 8260 Modified <br /> 2 2 EQUIPMENT DECONTAMINATION <br />' The hollow stem augers were cleaned prior to advancement of the boring Sampling tools and brass <br /> " sleeves used for sample collection were thoroughly washed with a solution of Alconox and <br />' thoroughly rinsed with tap water prior to each sampling run Following drilling activities, rmseate <br /> generated from decontaminating the equipment was placed in properly labeled DOT-approved model <br /> 17H 55-gallon drums and were stored on-site <br /> rl <br /> 23 SOIL LOGGING x <br />' <br /> During drilling, auger returns were monitored for the presence of organic vapor using an organic <br /> vapor meter (OVM)equipped with a photo-ionization detector(PID Thermo Environmental 580A, <br />' 10 0 eV, calibrated to isobutylene) Duplicate soil samples were extruded from their sleeve and <br /> screened for the presence of organic vapor using the OVM The OVM readings were recorded ori <br />' boring logs The soil was then visually described in accordance with the Unified Soil Classification <br /> System (see Boring Log, Appendix A) <br /> I <br /> Advanced GeoEnvironmental,Inc <br /> I <br />