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(� 18 November 2005 <br /> AGE-NC Project No 02-0962 <br /> Page 3 of 7 <br /> 2 1 4 Monitoring Well Development <br /> On 02 August 2005, monitoring wells MW-4 through MW-6 were developed utilizing a Waterra <br /> inertia pump and steel bailer Ground water was purged from each monitoring well until it was <br /> visually sediment-free, approximately 26 gallons of water were removed from each well Purged <br /> ground water was containerized in properly labeled, DOT-approved 55-gallon drums and stored <br /> on-site Monitoring well development field logs are provided in Appendix C <br /> 2 1 5 Well Head Survey <br /> On 15 August 2005,a California state-licensed surveying engineer from Morrow Surveying surveyed <br /> the location and elevation of monitoring wells MW-4 through MW-6,the global positioning system <br /> (GPS) location was surveyed to the nearest 0 1-foot relative to coordinate datum NAD 83 (1986), <br /> and the elevation at the notch in the top of the well casing was surveyed to the nearest 0 01-foot <br /> relative to NAVD 88 from GPS observations The elevations of wells MW-4 through MW-6 were <br /> determined to be 11 90 feet, 12 05 feet, and 11 99 feet above mean sea level (MSL), respectively <br /> The results of the monitoring well survey are recorded in Table 1 The surveying report is presented <br /> �•� in Appendix D <br /> 22 QUARTERLY WELL MONITORING <br /> The third quarter ground water monitoring event was performed on 01 September 2005, ground <br /> water monitoring was performed on monitoring wells MW-1 through MW-6 <br /> 2 2 1 Well Monitoring and Evacuation <br /> On 01 September 2005, a Solmst water level meter was used to measure the depth to ground water <br /> in monitoring wells MW-1 through MW-6 relative to the tops of the well casings After the depth <br /> to ground water measurements were collected,casing water in each monitoring well was evacuated <br /> using a Waterra inertia pump and dedicated tubing Approximately 6 to 7 5 gallons of water were <br /> evacuated from each of the monitoring wells, equivalent to three casing water volumes per well <br /> Temperature, pH, and conductivity of the purged water were measured for stabilization at regular <br /> intervals using an Oakton water analyzer Field data logs are provided in Appendix E Purged water <br /> was containerized in properly labeled, DOT-approved 55-gallon drums and stored on-site pending <br /> proper disposal <br /> Advanced GeoEnvironmental,Inc <br />