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13 June 2001 <br /> AGE-NC Project No 99-0637 <br /> IPage 2 of 7 <br /> 22 LOGGING <br /> Soil was extruded from a second brass sleeve and was screened for the presence of organic vapor <br /> I using an organic vapor meter (OVM) equipped with a photo-ionization detector (PID Thermo <br /> Environmental 580A, 10 0 eV, calibrated to isobutylene), and the OVM readings were recorded on <br /> the boring log The soil was then visually described in accordance with the Unified Soil <br /> IClassification System (see Appendix A) <br /> 23 WELL COMPLETIONS <br /> Pilot borings MW 1 through MW4 were completed as ground water monitoring wells using two-inch <br /> I diameter PVC casing with 0 020-inch slotted screen installed from approximately 10 feet to 30 feet <br /> bsg and with blank casing extended to the surface The filter pack (No 2112 Lonestar sand) was <br /> installed from approximately 8 feet to 30 feet bsg A nominal 3-foot bentonite chip plug was then <br /> installed above the filter pack and hydrated The wells were then grouted to near the surface with <br /> portland cement Water-tight, traffic-rated well boxes were then installed over the wells As-built <br /> • well diagrams are depicted on the boring logs in Appendix A <br /> I24 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 /> I • Volatile aromatic hydrocarbons- benzene,toluene,ethylbenzene and total xylenes (BTEX) <br /> and methyl tertiary-butyl ether (MTBE) in accordance with EPA Method 8020, and <br /> • Oxygenated compounds - di-isopropyl ether (DIPS), ethyl tertiary-butyl ether (ETBE), <br /> MTBE,tertiary-amyl methyl ether(TAME) and tertiary butanol (TBA) in accordance with <br /> EPA Method 8260 Modified <br /> 2 5 MONITORING WELL DEVELOPMENT <br /> On 10 April 2001, monitoring wells MW 1 through MW4 were developed utilizing a stainless steel <br /> hand bailer and a two-stage submersible pump Groundwater was purged from each monitoring well <br /> until groundwater was visually sediment free,approximately 25 gallons of water were removed from <br /> Advanced GeoEnvironmental,Inc <br />