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1 i <br /> 15 Apri12002 <br /> AGE-NC Project No 98-0492 <br /> ' Page 2 of 6 <br /> 22 LOGGING <br /> Soil was extruded from a second brass sleeve and was screened for the presence of organic vapor <br /> using an organic vapor meter (OVM) equipped with a photo-ionization detector (PID Thermo <br /> Environmental 580A, 10 0 eV, calibrated to isobutylene), the OVM readings were recorded on the <br /> boring log The soil was then visually described in accordance with the Unified Soil Classification <br /> System (see Appendix A) <br /> ' 23 WELL COMPLETIONS <br /> Pilot borings MW1, MW2 and MW3 were completed as ground water monitoring wells using <br /> two-inch diameter PVC casing with 0 020-inch slotted screen installed from approximately 10 feet <br /> to 30 feet bsg in borings MW and MW2 and from approximately 9 feet to 29 feet bsg in boring <br /> MW3 and with blank casing extended to the surface The filter pack (No 3 Lonestar sand) was <br /> ' installed from approximately 7 to 8 feet to 29 to 30 feet bsg A nominal 2-foot bentonite chip plug <br /> was then installed above the filter pack and hydrated The wells were then grouted to near the surface <br /> with portland cement Water-tight, traffic-rated well boxes were then installed over the wells <br /> '• As-built well diagrams are depicted on the boring logs in Appendix A <br /> 24 LABORATORY ANALYSES OF SOIL SAMPLES <br /> ' Selected soil samples were analyzed for <br /> • Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d) in <br /> accordance with EPA Method 5030/8015 Modified and 3550/8015 Modified, <br /> • Benzene, toluene, ethylbenzene and total xylenes (BTEX) and methyl tertiary-butyl ether <br /> (MTBE) in accordance with EPA Method 8020, and <br /> • Fuel additives - di-isopropyl ether (DIPS), ethyl tertiary-butyl ether (ETBE), MTBE, <br /> tertiary-amyl methyl ether(TAME), tertiary butanol(TBA), 1,2-dichloroethane (1,2-DCA) <br /> ' and ethylene dibromide(EDB) in accordance with EPA Method 8260 Modified <br /> 25 MONITORING WELL DEVELOPMENT <br /> ' On 06 February 2002,monitoring wells MW 1,MW2 and MW3 were developed utilizing a stainless' F <br /> steel hand bailer and a two-stage submersible pump Groundwater was purged from each monitoring <br /> well until ground water was visually sediment free,approximately 20 gallons of water were removed <br /> ' Advanced GeoEnvironmental,Inc <br /> 1 <br />