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G . 26 April 2000 AGE-NC Project No 99-0520 ' Page 5 of 8 I generated from decontaminating the equipment was placed in properly labeled Department of Transportation (DOT) Model 17H 55-gallon drums and stored on-site in an area lacking public access 43 WELL COMPLETION ISoil borings MW-1 through MW-5 were completed as conventional ground water monitoring wells MW-1 through MW-5, respectively Field numbering of the wells was determined prior to ' installation of each well to aid the PHS-EHD field inspections A summary of the construction details are depicted on the boring logs (Appendix A) ' 44 SOIL.LOGGING ' During drilling, auger returns were monitored for the presence of organic vapor using an organic vapor meter(OVM) equipped with a photo-ionization detector(PID Thermo Environmental 580A, 010 0 eV, calibrated to isobutylene) Auger returns were placed on plastic and stored on the western Iedge of the site, pending laboratory analysis I Duplicate soil samples were extruded from their sleeve and screened for the presence of organic vapor using the OVM The OVM readings were recorded on boring logs The soil was then visually described in accordance with the Unified Soil Classification System (see Appendix A) I , 4 5 GROUND WATER DEPTH MEASUREMENT AND PURGING On 28 February 2000, a Solmst water level meter was used to measure the depth to ground water in each well relative to the top of the well casing After ground water depth measurements were ' collected, monitoring wells were purged using a two-stage submersible pump Ten gallons of water (a minimum of 3 well-volume) was evacuated from wells MW-1 ' through MW-5 Temperature, pH and conductivity of the purged water were measured at regular purge-volume intervals in all wells The field data were measured with an ICM model'52200 water analyzer Logs of the field data are included in Appendix B Purged water was stored on-site in ' labeled 55-gallon drums I , • Advanced GeoEnvironmental,Inc. I