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Flush Mount, locking <br /> steel, Christy Box <br /> Existing Ground Surface <br /> W W W upper <br /> Z2z friction <br /> 0NIII" cap <br /> 000 <br /> 000 <br /> eQQ B <br /> h ti!C <br /> � E <br /> f•; C <br /> I 1 I <br /> I . measured water level <br /> A l <br /> IF <br /> D <br /> I <br /> • i <br /> j <br /> basal friction cap EXPLANATION <br /> A Total depth of boring and <br /> monitoring well <br /> B Thickness of concrete seal <br /> C Thickness of bentonite seal <br /> D Thickness of sand backfill <br /> E Length of unslotted casing <br /> F Length of slotted casing <br /> FIGURE 5: Typical x-section of a monitoring well with locking Christy Box <br />