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WELL COVER <br /> CONCRETE APRON <br /> LOCKING CAP <br /> NEAT CEMENT 0.5-1 FEET <br /> BLANK 40 PVC SCREEN (SCHEDULE 40) . <br /> 0-5 FEET <br /> BENTONITE PLUG, 1-3 FEET <br /> } <br /> 4.. <br /> :N <br /> �y• <br /> I <br /> ,r• FILTER PACK (#2/12 SAND) 3-25 FEET <br /> 0.010 SLOTTED PVC SCREEN (SCHEDULE 40) <br /> 5-25 FEET -. <br /> �t <br /> PLUG <br /> 8" BOREHOLE DIALETER <br /> I ALL DEPTHS RELATIVE TO SURFACE GRADE <br /> NOT TO SCALE <br /> MONITORING WELL DESIGN 4dvaneed <br /> YAMADA BROS. GeoEnvironmental, Inc. <br /> N ,M aif :, <br /> 15406 SOUTH TRACY BLVD. PROJECT NO. ACE—NC-98-0452 FILE: We11Dsn FIGURE: <br /> STOCKTON, CALIFORNIA DATE: 09 FEBRUARY 2004 DRAWN BY: KMEM 3 <br />