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15 June 2004 <br /> AGE-NC Project No 01-0877 <br />' Page 2 of 7 <br /> beginning at 5 feet bsg, using a 140-pound hammer to advance the sampler The number of blows <br />' required to advance the sampler over each 6-inch increment of the 18-inch sampling interval was <br /> recorded on the bonng logs For each sample,both ends of the leading or other selected sleeve were <br />' covered with Teflon sheets, capped and sealed with tape <br /> Soil samples from boring B5 were collected continuously using a 5-foot split-spoon sampler The <br />' sampler was driven every five feet with a hydraulic ram ahead of the drill bit, allowing for <br /> continuous soil recovery The soil was removed from the sampler and then placed on plastic for <br /> further examination Sections of samples selected for laboratory analysis was hand-packed into a <br />' brass sleeve and the ends were covered with Teflon sheets, capped and sealed with tape <br /> All sampling equipments were washed in an Alconox solution and double rinsed with water prior <br />' to each sampling run to minimize cross-contamination All soil samples collected were properly <br /> labeled, stored on lee and transported under chain-of-custody to CTEL, a State of California DHS- <br /> certified analytical laboratory <br /> 1 <br /> 2 2 LOGGING <br /> After sample preservation,the remaining soil was field-screened utilizing an organic vapor analyzer <br />' (OVA) equipped with a photo-ionization detector (PID Thermo Environmental 580b, 10 0 eV, <br /> calibrated to isobutylene) The soil was also described by an AGE geologist in accordance with the <br /> Unified Soil Classification System Soil boring logs exhibiting soil profiles are depicted in <br />' Appendix B <br />' 23 LABORATORY ANALYSIS OF SOIL SAMPLES <br /> Selected soil samples were analyzed for <br />' • Total petroleum hydrocarbons as gasoline(TPH-g),diesel(TPH-d)and motor oil(TPH-mo) <br /> in accordance with EPA Method 8015 Modified, <br /> • Benzene, toluene, ethylbenzene and total xylenes (BTEX) and the volatile organic <br /> compounds methyl-tertiary-butyl ether(MTBE), tertiary butyl alcohol (TBA), di-isopropyl <br /> ether (DIPE), ethyl tertiary butyl ether (ETBE), tertiary amyl methyl ether (TAME), <br />' 1,2-dlchloroethane (1,2-DCA) and 1,2-dlbromoethane (EDB) in accordance with EPA <br /> Method 8260 <br /> • <br />' Advanced GeoEnvironmental,Inc <br />