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The aquifer test will be conducted using a submersible Grundfos environmental pump which will have a check valve A discharge hose will be connected to the pump and extend to the sewer, or a holding tank A flow meter/totalizer will be installed to measure the flow rate and total gallons extracted during the test A globe valve will be utilized to control the extraction flow rate The pump will be set approximately one to two feet from the bottom of the well A generator, or existing electrical power at the site, will be used to power the pump Pressure transducers will be installed in the pumping well and in three observation wells The transducers will be connected to a data logger, which will document changes in the groundwater surface elevation as the test proceeds Traffic cones and caution tape will be used to surround the pumping well and associated test equipment The discharge hose and all power cords will be secured to the ground using duct tape iPrior to the start of work, a decontamination area will be established This will be in a secured area and consist of an Alconox solution wash, a first rinse and a second rinse Down hole equipment will be decontaminated prior to use Prior to equipment set-up, all wells to be monitored during the test will be opened and allowed to stabilize The data logger will be set-up for the conditions of the test At least 24 hours prior to the test, a step test will be performed to determine the appropriate flow rate to be used during the aquifer test The step test will be conducted in the well to be used for the aquifer test Each step will consist of pumping groundwater from the designated pumping well at a constant rate until the water level stabilizes The flow rate will be increased in each subsequent step until the maximum flow rate that can be sustained by the pumping well is determined 10 Prior to starting the pump, the total gallons displayed on the flow meter/totalizer will be recorded This will be used to determine the total number of gallons extracted during the test The pump and data logger will be turned on simultaneously to start the pumping test During the pumping test a constant flow rate will be extracted from the pumping well The flow rate and data collected by the data logger will be periodically monitored during the test The duration of the pumping test will be determined by the data collected The ' test may be conducted for 8 to 16 hours Personnel conducting the test will determine the duration of the pumping test Once the pumping test is completed, the pump as shut off and the recovery test begins Prior to shutting off the pump the data logger will be configured for the recovery portion of the aquifer test The exact time and the total gallons displayed on the flow meter/totalizer will also be recorded The pump will be turned off and data logger stepped to collected recovery data The duration of the recovery test will be determined by the data collected The recovery test may be conducted for 8 to 16 hours Personnel conducting the test will determine the duration of the recovery test An effluent water sample shall be collected during the pumping test The analytical data can be used to help ' design a groundwater remediation system Additional sampling may be required by conditions of a discharge permit If water is being stored in a holding tank, appropriate samples will be collected per disposal requirements The water will be removed to an appropriate disposal facility by a licensed transporter ' EZ 100966SAFSWP ATC Associates Inc S 1EZ Sme\EZ 1009661Reports1100966SAFSWP ATC Project No 43 25827 0026 12