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VADOSE ZONE <br />GROUND SURFACE <br />VENT Water -Tight LOCKING WELL MEAD COVER <br />FILL <br />� -f., cap GROUTED GROUTED IN PLACE <br />NATIVE <br />BACKFILL 4 _ 3 TYp min. BENTONITE /GROUT SEAL <br />2. BENTONITE PELLET SEAL <br />TANK 2' TYp- min. <br />BACKFILL <br />UNDERGROUND sANo <br />BACK- <br />3TORAOE a -lo' Typ. FILL <br />TANK 2"min. i.d. Perforated PVC <br />Well Casing <br />I <br />S Ty. <br />ox1 Threaded End Cap or Plug m =. <br />-T1 6.. BENTONITE SEAL <br />WATER TABLE ^• S <br />4 j BENTONITE SLURRY <br />N, S 21- S' TYp. <br />L <br />9 - 10" TYp. <br />Boring Dia. <br />NOTE <br />VADOSE ZONE WELL, Within and " <br />through the Tank Backfill. <br />