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roposed Monitoring <br /> Well Construction <br /> Wellhead cover <br /> Cement base <br /> Land surface <br /> 0 <br /> 0 <br /> 4" PVC casing <br /> p Qo O.a <br /> o �,o <br /> Cement sanitary seal <br /> oo. D <br /> 0 <br /> 5 feet minimum* oQ ado <br /> �® o <br /> *Actual cement sanitary seal thickness _ <br /> Bentonite clay <br /> shall be determined on a site by site basis. transitional seal <br /> Minimum seal thickness shall be 5 feet;whenVL_ <br /> appropriate,seal thickness shall be increased - <br /> to 8 to 10 feet by shortening the sand filter <br /> pack,well screen,and sump length. <br /> Sand filter pack <br /> 15 ft slotted screen <br /> 6-30 <br /> „ <br /> ft Sump <br /> Note: Below grade wells shall be enclosed <br /> in a flush mounted traffic rated vault cap <br /> box with lid (not shown). <br /> Figure <br /> HYDROFOCUS= Typical Monitoring Well Construction � <br /> PROJECT: 5023 DATE: 4/25/05 <br />