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• 13 September 2001 I AGE-NC Project No 95-0128 Page 3 of 7 I24 LABORATORY ANALYSES OF SOIL SAMPLES Selected soil samples were analyzed for • Total petroleum hydrocarbons quantified as gasoline (TPH-g) and diesel (TPH-d) in accordance with EPA Method 8015 Modified and • Volatile aromatic hydrocarbons benzene, toluene, ethylbenzene and total xylenes (BTEX) in accordance with EPA Method 8020 25 MONITORING WELL DEVELOPMENT PROCEDURES On 11 June 2001, a Solmst water level meter was used to measure the depth to ground water in monitoring wells MW-13 through MW-16 After depth to ground water measurements were collected, approximately 25 to 30 gallons of water was purged from each well to be sampled using liea PVC submersible two-stage pump Temperature,pH and conductivity of purged ground water were measured at five or ten gallon intervals utilizing an ICM water analyzer The field data and field sheets are included in Appendix B Purged water was temporanly stored on-site in 55-gallon DOT- approved H-17 storage drums pending proper disposal 2 6 MONITORING WELL PURGE PROCEDURES On 02 July 2001, a Solinst water level meter was used to measure the depth to ground water in monitoring wells MW-1 through MW-16 and vapor well VW1 On 02 and 03 July 2001, a minimum of 3 casing-water volumes were purged from each well to be I sampled using a PVC submersible two-stage pump or disposal bailer Temperature, pH and conductivity of purged ground water were measured at various intervals, depending on the volume of water in each well, using an ICM or Oakton water analyzers The field data and field sheets are included in Appendix B Purged water was temporarily stored on-site in 55-gallon DOT-approved H-17 storage drums pending proper disposal Following purging, the depth to ground water was measured to ensure that a minimum of 80% well-volume recharge had been achieved prior to sampling Advanced GeoEnvironmental Inc