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The leodville Mill <br />Environmental Sampling Procedures <br />Sampling Protocols <br />Page 1 -9 <br />sampling pump may be flushed by pumping a volume of potable water equal to two <br />times the total capacity of the pump. This may be followed by pumping the same <br />volume of DI /DS through the pump. <br />Surface pumps (e.g., peristaltic or diaphragm) used for evacuation or multiple wells <br />shall be cleaned between well locations. The pump should always be placed on clean <br />polyethylene sheeting to avoid contact with the ground surface. <br />April 2013 <br />