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1 <br /> Water samples were also collected from each new monitoring well. The water samples were <br />' analyzed for TPH and BTE&X; no hydrocarbons were detected in samples from MW-6, <br /> MW-7 or MW-8. <br /> 2.6 Quarterly Groundwater Monitoring <br /> dit in October 1992. <br /> Quarterly monitoring of groundwater at' �tuated in MW-1 and MW 4was initiated by u Hydrocarbons have Concentrations of hydrocarbons have fl <br /> been intermittently detected at very low levels in MW-5. No hydrocarbons have been <br /> detected in MW-6, MW-7 or MW-8 since installation in April 1993. Wells MW-2 and MW-3 <br /> have remained dry and have not been sampled since 1987. <br />' 2.7 Installation or Remediation Well RW-1 <br /> In order to access the soil directly beneath the former UST, boring RW-1 was installed in <br />' August 1993. This well was drilled at a 15° angle from vertical from a surface location near <br /> the southeast corner of the building, and completed as a 4-inch diameter remediation well. <br /> TPH as gasoline was detected in soil samples at concentrations as great as 12,000 ppm at <br />' a depth of 35 feet. <br /> 2.8 Final Remedial Pian Preparation <br />' A Final Remedial Plan (FRP) was prepared by GeoAudit in July 1994. The FRP outlined <br /> soil and groundwater remediation procedures for the site. However, implementation of the <br /> FRP has been delayed because of access difficulties with the owner of the neighboring <br /> property (the property is currently operated as an A & W restaurant). <br />' 3.0 PROCEDURES <br />' 3.1 Monitoring Well Purge Procedures <br /> Field work was performed on October 7, 1994. A SoIinst water level meter was used to <br />' measure the groundwater depth in each well. Monitoring wells MW-2 and MW-3 were dry. <br /> The relative piezometric level in each well and hydraulic gradient were determined from <br /> ' these data (Table 1). <br /> After depth measurements were made, PVC bailers were used to purge three well volumes <br /> from MW-5, MW-6, and MW-8 to stabilize pH, temperature and conductivity. Because of <br /> poor recharge, three well volumes could not be removed from MW-1, MW-4 and MW-7. <br /> Well parameters were measured at one-gallon intervals using an ICM water analyzer. Purge <br /> water was stored in 55-gallon drums on-site. Field data sheets are included in Appendix A. <br /> ' ' I Anda Se km I.e <br /> �b� 5 <br /> An a wr.e Qwnavu-i.+ <br /> 1 <br />