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' 07 September 2005 AGE-NC Project No 98-0540 ' Page 4 of 9 ' 2 2 2 Logging Soil was extruded from a remaining brass sleeves and screened for the presence of organic vapor ' using an organic vapor meter (OVM) equipped with a photo-ionization detector (PID Thermo Environmental 580A, 10 0 eV, calibrated to isobutylene), OVM readings were recorded on the boring logs The soil was then visually described in accordance with the Unified Soil Classification ' System (USCS) Boring logs for MW-4 and MW-5 are provided in Appendix C ' 2 2 3 Well Completions Pilot borings MW-4 and MW-5 were completed as ground water monitoring wells of the same designations using 2-inch diameter polyvinylchloride (PVC)casing, 0 020-inch slotted screen was installed from approximately 73 feet to 93 feet bsg in well MW-4, and from approximately 75 feet to 95 feet bsg in well MW-5, with blank casing extending to the surface in both borings The filter pack(No 3 Lonestar sand)was installed from approximately 70 feet to 93 feet bsg in well MW-4, and from approximately 73 feet to 95 feet bsg in well MW-5, with a nominal 5-foot bentonite chip plug placed above the filter pack and hydrated Wells MW-4 and MW-5 were grouted from 65 feet and 68 feet bsg,respectively,to near the surface with portland cement and water-tight,traffic-rated well boxes were installed over the wells As-built well diagrams are depicted on the boring logs in ' Appendix C 2 2 4 Monitoring Well Development On 13 June 2005,monitoring wells MW-4 and MW-5 were developed utilizing a stainless steel hand bailer and Waterra inertia pump Ground water was purged from each monitoring well until it was visually sediment-free, approximately 30 gallons of water were removed from wells MW-4 and MW-5 Purged groundwater was containerized in properly labeled,DOT-approved 55-gallon drums and stored on-site Field sheets and data are included in Appendix D 2 3 QUARTERLY WELL MONITORING The second quarter 2005 quarterly ground water monitoring event was performed on 14 June 2005, ' ground water monitoring was performed on monitoring wells MW-1 through MW-5 2 3 1 Well Monitoring and Evacuation . On 14 June 2005, a Solinst water level meter was used to measure the depth to ground water in Advanced GeoEnvironmentai,Inc.