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0 <br /> traffic rated, water-tight, flush- <br /> mounted well cover <br /> J•! <br /> F•J locking watertight top cap <br /> ground surface <br /> f r r <br /> J ! ! J J <br /> r { r r ! <br /> f { <br /> \J ,J <br /> ♦F •! <br /> { r <br /> \J J\{ <br /> , \ <br /> •! itJ <br /> r r r <br /> ♦r !♦i <br /> { r f <br /> ♦J f♦f <br /> cement sanitary seal r r r <br /> wr ;{ flush threaded sch 40 PVC <br /> �; k{ wellscreen and blank casing <br /> water table ,{ •,! <br /> J <br /> ! J <br /> f ! J <br /> ,f r♦I <br /> ! r J <br /> , \ <br /> ♦r r♦r <br /> J F F <br /> I ! r <br /> ♦/ yJ <br /> J r <br /> \ • <br /> r r <br /> r ! <br /> r r <br /> \ , <br /> r : : <br /> \J r♦r <br /> • r { <br /> r ! f <br /> typical 3 inch annulus <br /> r ! J <br /> , <br /> ! F <br /> r f r <br /> ♦r r\r <br /> \ <br /> 112 foot bentonite pellets machine slotted wellscreen <br /> 2 feet in length <br /> washed sand filter pack, 1 --- flush threaded PVC bottom cap <br /> foot above top of screen <br /> TYPICAL <br /> AIR SPARGING WELL CONSTRUCTION <br /> IN CROSS SECTION <br /> i <br /> Aqua Science Engineers Figure 8 <br />