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07 N 0 <br /> • November 2 2 0 <br /> AGE-NC Project No 96-0263 <br /> Page 2 of 6 <br /> 2 2 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), and the OVM readings were recorded on <br /> the boring log The soil was then visually described in accordance with the Unified Soil <br /> Classification System(see Appendix A) <br /> 23 WELL COMPLETIONS <br /> I Pilot boring OWl was completed as a ground water observation well using two-inch diameter PVC <br /> casing with 0 020-inch slotted screen installed from approximately 5 feet to 20 feet bsg and with <br /> blank casing extended to the surface Pilot boring EWl was completed as a ground water extraction <br />' well using six-inch diameter PVC casing with 0 020-inch slotted screen installed from approximately <br /> 5 feet to 20 feet bsg and with blank casing extended to the surface The filter packs (No 3 Lonestar <br /> • sand) were installed from approximately 4 feet to 20 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 /> grade with portland cement Water-tight, traffic-sated well boxes were then installed over the wells <br /> As-built well diagrams are depicted on the boring logs in Appendix A <br /> I <br /> 2 4 LABORATORY ANALYSES OF SOIL SAMPLES <br /> Selected soil samples were analyzed for <br /> • Total 'petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 5030/8015 Modified, <br /> • Benzene, toluene, ethylbenzene and total xylenes (BTEX) in accordance with EPA Method <br /> 8260B, and <br /> • The fuel additives da-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), methyl <br /> tertiary-butyl ether (MTBE), tertiary-amyl methyl ether (TAME), tertiary butanol (TBA), <br /> 1,2-dichloro ethane (1,2-DCA) and ethylene dibromide (EDB) in accordance with EPA <br /> Method 8260B <br /> 25 WELL DEVELOPMENT <br /> t • On 28 June 2002, wells OW1 and EW1 were developed utilizing a disposable plastic bailer and a <br /> two-stage submersible pump Ground water was purged from each well until ground water was <br />