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3 0 May 2001 • Y AGE-NC Project No 95-0143 Page 3 of 8 ' spoon sampler loaded with three pi e-cleaned 2-inch by 6-inch brass sleeves Samples were collected at five-foot intervals, beginning at 5 feet bsg using a 140-pound h.mnier to advance the sampler The number of blows required to advance the split-spoon sampler over each 6-inch increment of the 18-inch sampling Interval was recorded on the boring logs Sampling equipment was washed in an Alconox solution and rinsed with water prior to each sampling run to mininnize crass-contamination Soil samples were reserved b covering both ends of the leading or other selected sleeve with � p Y g Teflon sheets, capping with plastic and sealing with tape The samples were labeled, stored on Ice and transported under chain-of-custody to MAI ' 25 LOGGING Soil was extruded from a second brass sleeve and was 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), and the OVM readings were recorded on the boring log The soil was then visually described in accordance with the Unified Soil ' • Classification System ' 26 WELL AND BORING COMPLETION Borings MW-22, MW-23 and MW-24 were completed as ground water monitoring wells MW-22, ' MW-23 and MW-24 using two-inch diameter Schedule 40 PVC casing with 0 020-inch slotted screen, borings EW-3 and EW-4 were completed as groundwater extraction wells EW-3 and EW-4 using four-inch diameter Schedule 40 PVC casing with 0 020-Inch slotted screen Soil borings MW-22, MW-23 and MW-24 were advanced to 30 feet bsg, soil borings EW-3 and EW-4 were advanced to 35 feet bsg Each well was installed using 20 feet of screen from ' approximately 10 feet to 3 0 feet bsg in MW-22, MW-23 and MW-24 and from approximately 15 feet to 35 feet bsg in EW-3 and EW-4 with blank casing extended to the surface ' The filter pack for MW-22, MW-23 and MW-24 (No 3 Lonestar sand) was Installed from 8 feet to 30 feet bsg The filter pack for EW-3 and EW-4 was Installed from 13 feet to 35 feet bsg in the borings A nominal 2-foot bentonite-pellet plug was then Installed above the filter pack in each well ' The bentonite plugs in the wells were hydrated for approximately thirty minutes The ground water monitoring wells were gi outed to near the surface with portland cement Water- tight, traffic-rated well boxes were then installed over the wells As-built well diagrams are depicted . on the boring logs in Appendix D Advanced GeoEnvzronmental,Inc