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TYPICAL MONITORING WELL <br /> CONSTRUCTION DIAGRAM <br /> Traffic-rated cover Well cap <br /> Ground surface <br /> Blank casing Christy box <br /> Locking steel cover <br /> Borehole at least 4 inches <br /> greater than casing diameter <br /> Grout- <br /> Transition seal (bentonite - <br /> pellets or fine sand) <br /> Filter sand <br /> Well screen <br /> End cap <br /> Not to scale <br /> Fort .(PF).OW IMS) <br />