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28 January 1996 AGE-NC Project No 95-0144 Page 3 of 6 ' Samples from each boring were analyzed for total petroleum hydrocarbons as gasoline (TPH-g) and volatile organics(benzene, toluene, ethylbenzene and total xylenes BTE&X) in accordance with EPA methods 8015m and 8020, respectively Additionally, one sample from boring MW-18 was analyzed ' for TPH quantified as diesel and motor oil (TPH-d, TPH-mo) and for total recoverable petroleum hydrocarbons (TRPH) in accordance with EPA methods 8015m and 418 1 3 2 LOGGING ' Soil was extruded from the second brass sleeve and screened for the presence of organic vapors using a PID, and the readings were recorded on the bonne logs The soil was then described in accordance ' with the Unified Soil Classification System (see Boring Logs, Appendix A) ' 3 3 WELL COMPLETION Each boring was completed as a ground water monitoring well using 20 feet of 2-inch diameter PVC casing with 0 020-inch screen Blank PVC casing was then extended to the surface The filter pack (#3 Lonestar sand) was installed from total depth to two feet above the screen interval Bentoni[e pellets were used to make a 2-foot plug above the sand filter pack in each well, and the wells were ' then grouted to the surface with Portland Cement I� ' 3 4 MONITORING "TELL PURGE PROCEDURES ' On 5 October and 20 November 1995, a Solinst water level meter was used to measure the depth to ground water in each well relative to the top of the casing The relative ground water elevations and hydraulic gradient were determined from these data (Table 1) ' Following measurement of ground water depths on 5 October 1995, wells MW-1, MW-2, "N/RV-4' WV-5, MW-8,MW-11, MW-12 and MVV-13 were purged using a 2-stage purge pump To achieve ' stabilization of ground water parameters prior to collecting a water sample, between 6 and 11 gallons of water (a minimum of three well volumes), were removed from all wells except MW-8 Forty gallons of water were removed from MW-8 Stabilization parameters (temperature, pH and ' conductivity) were measured at regular intervals using an ICM model 52200 water analyzer The purge pump was decontaminated between each well using an Alconox solution Monitoring well data sheets are presented as Appendix B ' On 20 November 1995, the depth to ground water was measured in each well, including MXV-18, relative to the top of the well casings Approximately 10 gallons of water were removed from MW- IS, pi for to sampling, using a purge pump Stabilization parameters were measured at regular