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i <br />' I <br /> Water-tight <br /> DEPTH(feet) Ground surface traffic box <br /> 1-2 ft. Locking - <br /> -' mechanism <br /> Concrete <br /> Bentonite and Portand <br /> Cement <br /> Depends <br /> on depth <br /> to water <br /> 4 in.Sch,40 <br /> PVC Wank casing <br /> 1.2 Bentonite pellets <br /> Aft <br /> = Borehole diameter-10.25 in. <br /> 5 ft <br /> Depth to water _ Filter Pack <br /> 4 in.Sch.40 PVC <br /> loft screen <br /> ~' Threadod End Plug <br /> or Slip Cap <br /> Recommended 1 ft. <br /> Total depth of well minimum <br /> depends an depth EA ENGINEERING. <br /> to water and/or SCIENCE,AND <br /> presence of TECHNOLOGY <br /> competent ciay... .. . 41 Lafayette Circle <br /> Lafayette,CA.94549 <br /> Drawn Date <br /> Figure C-1. Representative details of standard construction <br /> of groundwater monitoring well. Dat <br />