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r I <br /> r26 September 2003 <br /> • AGE-NC Project No 95-0128 <br /> rPage 2 of 8 <br /> r the sampler over each 6-inch increment of the 18-inch sampling interval was recorded on the boring <br /> logs Sampling equipment was washed in an Alconox solution and rinsed with water prior to each <br /> sampling run to avoid cross-contamination Soil samples were not analyzed for chemical <br /> rconstituents <br /> r2 2 LOGGING <br /> Soil was extruded from a second brass sleeve and was visually described in accordance with the <br /> rUnified Soil Classification System (see Appendix B) <br /> r2 3 WELL AND BORING COMPLETION <br /> r Bonng MW17 was completed as ground water monitoring well MW-17 using two-inch diameter <br /> PVC casing with 0 020-inch slotted screen installed from approximately 25 feet to 45 feet bsg and <br /> with blank casing extended to the surface The filter pack(No 3 Lonestar sand)was installed from <br /> 45 feet to approximately 24 feet bsg in the annular space around the well screen and casing A <br /> 10 nominal 2-foot bentonite chip plug was then installed above the filter pack and hydrated <br /> r Boring MW 18 was completed as ground water monitoring well MW-18 using two-inch diameter <br /> PVC casing with 0 020-inch slotted screen installed from approximately 60 feet to 65 feet bsg and <br /> with blank casing extended to the surface The filter pack(No 3 Lonestar sand)was installed from <br /> r 60 feet to approximately 65 feet bsg in the annular space around the well screen and casing A <br /> nominal 2-foot bentonite chip plug was then installed above the filter pack and hydrated <br /> r 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 /> r <br /> 2 4 MONITORING WELL DEVELOPMENT PROCEDURES <br /> On 25 February2003 a Sohnst water level meter was used to measure the depth to ground water in <br /> P <br /> morutonng wells MW-17 and MW-18 After depth to groundwater measurements were collected, <br /> rapproximately 16 to 28 gallons of water was purged from each well to be sampled using a Waterra <br /> bailer system Temperature, pH and conductivity of purged ground water were measured at five or <br /> ten gallon intervals utilizing an Oakton water analyzer The field data and field sheets are included <br /> in Appendix C Purged water was treated by the on-site ground water treatment system <br /> r <br /> Advanced GcaERvzronmental Inc <br /> r <br />