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FIGURE 2 - ,schematic Representation of Wellhead <br />Design for Pumping Tests <br />Spigot for water sampling <br />Gate valve and/or flow controller valve for <br />controlling discharge rate <br />Discharge Pipe <br />Flowmeter or Orifice Weir <br />Automated datalogger <br />records water levels <br />Ground Surface <br />Steel well casing <br />Pressure transducer measures water levels <br />Borehole <br />Calibrated container for <br />volumetric measurement <br />of discharge rate <br />Submersible pump powered by a portable generator <br />emery & Garrett Groundwater, Inc. <br />FIGURE 2 <br />Discharge point downgradient of well <br />