Laserfiche WebLink
minimum of three casing volumes of water had been removed and temperature, pH, and <br /> electrical conductivity had stabilized to within 10% of the previous readings. This <br /> ' insured that formation waters were drawn into each well. All measured parameters were <br /> recorded on the appropriate field logs and are presented in Appendix B. Table I <br /> summarizes the field logs for the measured parameters. <br /> TABLE 1 <br /> Summary of Monitoring Well Field Logs <br /> 1 <br /> Volume Temp pH Conductivity <br /> ' Well Date purged (°F) units (µS/cm) Turbidity <br /> (gallons) <br /> 0.5 69.0 6.59 679 High <br /> MW-1A 03/24/04 1.0 67.8 6.41 627 High <br /> 2.0 67.3 6.50 603 High <br /> 3.0 66.9 6.32 597 High <br /> 0.5 69.6 7.88 587 Low <br /> ' MW-5 03/24/04 1.0 68.2 7.85 553 -Low <br /> 2.0 66.7 7.59 554 Low <br /> 3.0 66.0 7.53 549 Low <br /> ' 0.5 73.5 6.36 744 Moderate <br /> MW-6 03/24/04 1.5 70.5 6.46 662 Low <br /> 3.0 69.0 6.42 634 Low <br /> 4.5 69.0 6.39 640 Low <br /> 1.0 74.6 8.21 844 High <br /> MW-7 03/24/04 2.5 72.3 8.53 819 Moderate <br /> 5.0 72.4 8.60 818 Moderate <br /> 7.5 72.1 8.45 815 Low <br /> 1.0 69.4 7.02 834 Low <br /> ' <br /> MW-9 03/24/04 5.0 70.0 7.43 891 Low 10.0 70.0 7.47 872 Low <br /> 15.0 70.0 7.35 902 Low <br /> ' The pumps, hoses, and electrical leads were decontaminated before and between each <br /> well purging by washing the exteriors with a solution of laboratory grade detergent. The <br /> ' pumps were flushed by pumping the solution through the pump and hose. The exterior of <br /> the pump, hose, and electrical leads were then rinsed with potable water. Potable water <br /> was pumped through the pump and hose. The pump was then rinsed with potable water. <br /> Afterur in , sampling of each well was conducted using new, clean, dedicated <br /> p g g <br /> disposable polyethylene bailers. The bailers were lowered into the wells via new <br /> ' dedicated poly cords, samples collected, and gently poured into laboratory provided clean <br /> glass VOA vials. Each VOA vial was immediately sealed, checked for headspace, <br /> ' labeled with the date, time and location and placed in a cooler containing blue ice at 4° <br /> Celsius. Disposable Nitrile gloves were worn during purging and sampling, and were <br /> changed between wells. <br /> American Geological Service, Inc. <br /> CA95DE-029 7 <br />