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19 July 2000 <br /> AGE-NC Project No 96-0232 <br /> Page 4 of 29 <br /> conducted at the site to aid in determining the radius of influence from extraction well EW-1 <br /> Pressure transducers were employed in EW-1, MW-1 and MW-4 to measure differences in ground <br /> water levels before well pumping versus during well pumping <br /> Data collected from the water levels were placed into graphs depicting time and water levels The <br /> data from monitoring well MW-1 illustrates an increasing ground water elevation trend over a one <br /> week time period The data from MW-4 illustrates a neutral or slightly decreasing ground water <br /> elevation trend Drawdown graphs are presented in Appendix A <br /> 2 3 GROUND WATER PUMPING FROM EW-1 <br /> On 03 April 2000, After pump installation procedures were completed, AGE Initiated ground water <br /> pumping from extraction well EW-1 The extraction flow rate was calibrated to approximately 2 <br /> GPM, operated 24-hours a day, and piped directly into a 5,900-gallon above ground Baker storage <br /> tank awaiting transportation to Invirotec of Lincoln, California, a properly certified disposal facility <br /> Baker tank Non-Hazardous Waste Manifests are presented in Appendix B <br /> . Based on manifest records approximately 141,875 gallons was extracted from EW-1 between 03 <br /> April 2000 and 30 June 2000 Based on one cubic foot of water equaling 7 48 gallons, conversely, <br /> . one gallon of water equivalent to 0 1337 cubic feet, the calculated volume of extracted water was <br /> 18,967 cubic feet.Based on one gallon of water weighing 8 337 pounds per gallon at 60 degrees F, <br /> the mass of extracted ground water was calculated to be 1,182,812 pounds Mass-volume <br /> calculations of extracted ground water from EW-1 are presented in Appendix B <br /> 3 0 COLLECTION OF EXTRACTED WATER SAMPLES FROM BAKER TANK <br /> (EW-1) <br /> On 05, 07, 17, 28 April, 11, 18, 25 May, and 01, 07, 15, 22, 28 June 2000, AGE collected water <br /> samples from the 5,900-gallon above ground storage Baker tank effluent line from EW-1 discharging <br /> into the Baker tank Although referred to as "Baker tank samples", the samples collected are <br /> representative of`fresh' ground water feeding into EW-1 <br /> 3 1 SAMPLING PROCEDURES <br /> Water samples were collected from the top of the Baker tank, directly from the effluent line coming <br /> directly from EW-1 As the well is continuously pumping, purging was not required prior to sample <br /> • collection All samples were collected in laboratory-supplied 40-m1 EPA-approved VOA vials <br /> • Advanced CcoEnNironmental,Inc <br />