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I ' 12 January 2005 . AGE-NC Project No 97-0326 Page 2 of 11 ' For each sample,both ends of the leading or other selected sleeve were covered with Teflon sheets, capped and sealed with tape The samples were properly labeled,stored on ice and transported under chain-of-custody to Cal Tech Environmental Laboratories(CTEL),a State of California Department ' of Health Services (DHS)-certified analytical laboratory ' 212 Logging Soil was extruded from the remaining brass sleeves and was screened for the presence of organic ' vapor using an organic vapor meter(OVM)equipped with a photo-ionization detector(PID Thermo Environmental 580b, 10 0 eV, calibrated to isobutylene), the OVM readings were recorded on a boring log The soil was then visually described on the boring log in accordance with the Unified Soil Classification System (see Appendix B) ' 2 13 Well Completions Pilot borings MW7 through MW9 were completed as ground water monitoring wells Boring MW-7 ' was completed as a single-level monitoring well using two-inch diameter PVC casing with 0 020- inch slotted screen installed from 28 feet to 48 feet bsg, with blank casing extending to the surface The filter pack (No 3 Lonestar sand) was installed from approximately 26 feet to 48 feet bsg A ' nominal 2-foot bentonite chip plug was then installed above the filter pack and hydrated The well was then grouted to near the surface with portland cement, and a water-tight, traffic-rated well box ' was installed over the well utilizing a neat cement Borings MW 8 and MW9 were completed as multi-level monitoring wells utilizing 1 7-inch diameter ' continuous multi-channel tubing (CMT) or muti-level polyethylene well casing The inside of the multi-level well casing consisted of seven '/2-inch diameter teflon chambers, four of the chambers were utilized as monitoring wells,screened at depth intervals ofbetween 28 and 48 feet bsg,between ' 80 and 86 feet bsg,between 109 and 119 feet bsg(109 and 123 feet bsg in MW-8), and between 140 and 150 feet bsg, respectively Each screen interval consisted of drilling a total of three 3/8-inch diameter holes(ports)at regularly spaced intervals(18-inch apart),wrapping each%-inch diameter hole with a stainless steel, 0 02-inch mesh screen and securing the mesh screen with stainless steel locking clamps The location of each screened interval is referenced at the top of the multi-level well casing relative to a mark placed on the shallowest-screened well, which is designated as well "A", 1 the top view of wells MW-8 and MW-9 are depicted in Figures 3a and 3b, respectively i After deploying the multi-level well casing in the hollow stem boring to total depth, filter pack 1 material consisting of pre-washed 93 Lonestar sand was added through the hollow stem augers to approximately one foot above and one foot below each screened interval A bentonite seal (coated Advanced Geo Enwronmental,Inc 1