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WELL COVER <br /> CONCRETE APRON <br /> i <br /> LOCKING CAP <br /> NEAT CEMENT 05-1 FEET <br /> I <br /> I <br /> IBLANK 40 PVC SCREEN (SCHEDULE 40) <br /> 0-5 FEET <br /> IBENTONITE PLUG, 1-3 FEET <br /> I <br /> I <br /> FILTER PACK (#3 SAND) 3-25 FEET <br />' 0020 SLOTTED PVC SCREEN (SCHEDULE 40) <br /> 5-25 FEET <br /> PLUG <br /> B' BOREHOLE DIAMETER <br /> ALL DEPTHS RELATIVE TO SURFACE GRADE <br />' NOT TO SCALE <br /> MONITORING WELL DESIGN ® advanced <br /> I YAMADA BROS GeoEnvironmental, Inc <br /> ar N���ra c.�rora.• <br /> 15406 SOUTH TRACY BLVD PROJECT NO AGE--NC-9B-0452 FILE IWEL FIGURE <br /> ISTOCKTON, CALIFORNIA DATE 11 FEBRUARY 2000 DRAWN BY KMM 4 <br />