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GROUND SURFACE <br />- FILL <br />NATIVE <br />BACKFILL 4 - 5 Typ, <br />TANK <br />BACKFILL 4 <br />UNDERGROUND <br />STORAGE <br />TANK <br />VADOSE ZONE <br />VENT Woto -Tpht .. <br />Cop, <br />min: min. <br />-,•M <br />c <br />S <br />.. <br />LOCKING WELL HEAD COVER <br />` GROUTED IN PLACE <br />BENTONITE /GROUT SEAL <br />BENTONITE PELLET SEAL <br />2' TYp. min. <br />SAND <br />BACK// -,I{ <br />FILL/ <br />-,2"min. i.d. Perforated PVC <br />Well Coming <br />s � <br />I .Threaded End Cap or Plug <br />6 .' BENTONITE SEAL <br />S <br />i <br />— WATER <br />TABLE S <br />BENTONITE SLURRY <br />---, ( 2l- s' TYp. <br />8 - 10" Typ <br />Boring Dia <br />NOTE <br />VADOSE ZONE WELL, Within and <br />through the Tank Backfill. <br />