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V <br /> 29 September 2003 <br /> • AGE-NC Project No 99-0654 <br /> Page 2 of 5 <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 and was stored in a chilled container under ice <br /> Soil samples retrieved from the borings were visually classified on a boring log by an AGE geologist <br /> in accordance with the Unified Soil Classification System(USCS), the soil bonng log is provided <br /> in Appendix B Additionally, the soil samples were field-screened for the presence of volatile <br /> organic compounds using an organic vapor meter(OVM)equipped with a photo-ionization detector <br /> (PID Thermo Environmental 580A, 10 0 eV,calibrated to isobutylene), the concentration readings <br /> were recorded on the boring lob <br /> 2 3 GRAB GROUND WATER COLLECTION <br /> Ground water was encountered at a depth of 40 feet bsg in each probe boring, a grab ground water <br /> sample was collected utilizing a Geoprobe water sampling assembly fitted with a pre-cleaned one- <br /> inch diameter 0 01-inch slotted temporary well screen The ground water sample was extracted by <br /> • lowering a Teflon hose equipped with a ball-valve through the hollow center of the push rods into <br /> the screen section The sample was collected in.three EPA-approved 40-m1 VOA vials containing <br /> 0 5 ml 18% hydrochloric acid as a sample preservative The collected ground water samples were <br /> labeled with the boring designation, date, time, and sampler's initials and placed in a chilled <br /> container under ice <br /> 2 4 LABORATORY ANALYSIS OF SOIL AND GRAB GROUND WATER SAMPLES <br />' The grab ground water sample and selected soil samples were transported under chain-of-custody <br /> procedures to Cal Tech Environmental Laboratories, a California Department of Health Services <br /> (DHS)-certified laboratory, for analyzed for <br />' • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015 Modified, and <br />' • Benzene,toluene,ethylbenzene and xylenes(BTEX)and methyl tertiary-butyl ether(MTBE) <br /> in accordance with EPA Method 8260M <br />' • The fuel additives MTBE, di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), <br /> tertiary-amyl methyl ether(TAME), tertiary butanol(TBA), ethylene dibromide(EDB)and <br /> 1,2-dichloroethane (1,2-DCA) in accordance with EPA Method 8260M <br /> 1 ' <br />' Advanced GeoEnvironmental,Inc- <br />' <br />