Laserfiche WebLink
' 15 February 2006 <br /> • AGE-NC Project No 95-0184 <br />' Page 2 of 7 <br /> 212 Logging <br /> Soil was extruded from the core sleeve and was manually screened for the presence of organic vapor <br /> The soil was also visually described on the boring log in accordance with the Unified Soil - <br />' Classification System (see Appendix B) <br /> 2 13 Well Completions <br /> Pilot borings EW-1 was completed as ground water extraction well using four-inch diameter PVC <br /> casing with 0 030-inch slotted screen installed from approximately 30 feet to 50 feet bsg, with a <br /> blank casing extended to the surface The filter pack(No 3 Lonestar and coarse sand)was installed <br /> from approximately 29 feet to 50 feet bsg A nominal 2-foot bentonite chip plug was then installed <br /> above the filter pack and hydrated <br /> r <br /> Pilot borings EW-2 was completed as ground water extraction well using four-inch diameter PVC <br /> casing with 0 030-inch slotted screen installed from approximately 58 feet to 73 feet bsg, with a <br /> blank casing extended to the surface The depth was specified based on the occurrence of coarse <br />' • grained material and the higher than typical concentrations of dissolved hydrocarbons in the lower <br /> coarse grained stratigraphy The filter pack (No 3 Lonestar and coarse sand) was installed from <br /> approximately 57 feet to 73 feet bsg A 4-foot bentonite chip plug was then installed above the filter <br /> pack and hydrated 1�1 <br /> The wells were then grouted to near the surface with portland cement Water-tight,traffic-rated well <br />' boxes were then installed over the wells As-built well diagrams are depicted on the boring logs in <br /> Appendix B <br /> 2 14 Monitoring Well Development and Waste Disposal <br />' On 16 November 2005, extraction wells EW-1 and EW-2 were developed utilizing a stainless steel <br /> and bailer and an inertia pump Ground water was purged from each monitoring well until ground <br /> water was visually sediment free Approximately thirty-gallons of water and silts were removed from <br /> the wells Purged water was stored on-site In properly labeled, 55-gallon Department of <br /> Transportation (DOT)-approved drums Waste water was disposed by American Valley Waste on <br />' 7 0? November 2005 and disposed of at Cascade General Inc Waste drums of soil cuttings were <br /> removed by Slaby Environmental and disposed at L&D Landfill <br /> y�lo� <br />' Advanced GeoEnvnronmental,Inc <br />