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Monitoring Wells TW-11 and TW-2 Construction Diagram <br /> Locking steel <br /> cover <br /> —Ground surface <br /> 2-inch Sch. 40 blank casing Well:1:73 � <br /> Cement grout <br /> (5%bentonite) —2 feet below ground surface <br /> Transition seal --F —3 feet <br /> (bentonite chips) <br /> 4 feet <br /> B-inch diameter borehole <br /> No. 1/20 filter sand <br /> 2-inch Sch. 40 well screen <br /> (0.01-inch slot) <br /> End cap 14 feet <br /> 15 feet <br /> Not to scale <br /> Figure <br /> TW-1 and TW-2 WELL CONSTRUCTION DIAGRAM 2 <br /> Surland Homes Property Project No. <br /> GEOMATRIX Tracy, California 4780 <br /> .Waft'.o ..i <br />