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Flush-mount, <br /> Ground level -► water-tight <br /> well cover <br /> 'St KS.ff t�<C <br /> i�i'�< ilikt <br /> r�rx rz rk r <br /> r�rZ rZ rZ r Pc <br /> r,�rx rx rx r <br /> slip cap <br /> Bentonite plug approximately <br /> 'XYZ YZ Y Y��YZ Y <br /> 2 feet thick ` <br /> CYZ Y� Y�YZY <br /> Yx Y� Y�YZ Y <br /> Top of sandpack set approximately Y Y <br /> 2 feet above top of screen casing <br /> Top of screen set above <br /> highest expected water level <br /> PVC <br /> slotted screen <br /> EXPLANATION SZ <br /> S Highest expected <br /> water level <br /> PVC <br /> `�`z Cement grout threaded cap <br /> Bentonite plug <br /> Sandpack <br /> Borehole <br /> diameter <br /> Figure C-1 Typical monitoring well and piezometer construction <br /> 462891/42/PPU26 C-2 <br />