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traffic rated, water-tight, flush- <br /> mounted well. cover <br /> \r 00 \r1 <br /> r\r .♦/\ <br /> locking watertight top cap <br /> ♦ \ 4 <br /> r • r <br /> ground surface 777, 4 <br /> - .r4r 4r r4r .4r4 <br /> E Sr •4r <br /> J r <br /> .4 r4 <br /> 4 �\ <br /> J I I J <br /> r r J r <br /> 4 4 <br /> 1 ! I ! <br /> \ <br /> r r r r <br /> ♦ 4 <br /> r r r r <br /> r / <br /> cement sanitary seal <br /> flush threaded sch. 40 PVC <br /> r4r J\ <br /> ;.; wellscreen and blank casing <br /> 4 \ <br /> r r r <br /> 0.5-2 feet bentonite pellets <br /> washed sand filter pack, 1 to 2 <br /> feet above top of screen <br /> machine slotted wellscreen <br /> 5 feet above saturated zone <br /> --- and 10-15 feet below saturated <br /> zone I <br /> typical 3 inch annulus === <br /> -- flush threaded PVC bottom cap <br /> TYPICAL <br /> MONITORING WELL CONSTRUCTION <br /> . IN CROSS SECTION <br /> Aqua Science Engineers Figure 4 <br />