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RTC' S SO C I ATE S I N C. + Radius of influence of groundwater extra • Groundwater drawdown; • Hydrogeologic properties of the aquifer; • Mass extraction rate of groundwater. The scope of work for the pilot test consisted of extra, EW -1 for approximately 6.5 hours, and monitoring the well EW -1 and observation wells GMX-1 and MW -2 th 3.1 n of groundwater from monitoring well ges in groundwater level in extraction L MW -4. The aquifer test was conducted on January 29, 2002 over an approximate 6.5 -hour period by extracting groundwater at a generally constant rate frorr well EW -1. The test was performed to determine the aquifer properties and the radius of influer ce for groundwater pumping. Prior to initiating groundwater pumping, water lev( Measurements were collected manually using water lev( one-hundredth of a foot (0.01 feet). Depth to water me, test are shown on Table 1. Prior to initiating the test, Al the extraction well EW -1 and observation wells GMX1 the depth to water in the wells throughout the test. The extracted groundwater was discharged into a 6,5( approximately 80 feet north of extraction well EW -1. Appendix D. 3_2 Analysis of Groundwater Pumping Test Data The constant discharge aquifer test is the most useful m hydraulic conductivity (K), transmissivity (T), and s layer. The groundwater pumping rate during the p averaged approximately 13.54 gallons per minute (g approximately 5,280 gallons of groundwater extracted analyzed using AQTESOLV' groundwater modeling; 3,3 The aquifer parameters transniissivity and storage coeffc software. Drawdown data were used in solving for 1 observation wells, GMX1, MW -2, MW -3, and MW-� elevations measured during the test were recorded by -` Appendix E with the AQTESOLV' input data. The average of 11 feet, based on approximate length of the w, w:1259571reportslpumptest.doc 3 s were measured in each site well. probes capable of measuring depths to urements at the beginning of the pump placed dedicated water level probes in MW -2, MW -3, and MW -4 to measure polyethylene Baker Tank located test field notes are contained in J to determine the aquifer parameters of ;e coefficient (S) in the water -bearing test, as measured by the flow meter, which over a 6.5 -hour period yields a well EW -1. The collected data were nt were calculated using AQTESOLV' aquifer parameters. Data from four were used for analysis. Groundwater ,ater level probes and are contained in 4uifer thickness was assumed to be an ,r column in the well.