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r • <br /> l <br /> Ground Surface Graded for <br /> Drainage Away From Vault <br /> Lock Anchors for <br /> Vault Lid <br /> �,` ' �.� 467 ` Concrete Vault <br /> 4e <br /> • 7 <br /> 1 <br /> h y <br /> •� Cement Grout <br /> Blank Casing 0,1 V <br /> 10 <br /> 3-4 <br /> J <br /> 3-4 Inch Annulus <br /> Minimum 3 Foot <br /> bentonite Seal <br /> Interior/Exterior Flush Gravel Pack Placed 18 to 25 <br /> Threaded Coupling M Inches Above Top o: <br /> • /• <br /> a• Well Screen. <br /> • ,• Well Screen <br /> • <br /> ° Gravel Pack <br /> • • <br /> Centralizer <br /> • <br /> Casing in Suspension ( 1;ot <br /> on Hole Bottom ) <br /> Not To Scale <br /> FIGURE 111-7 <br /> Completion of Piezometer or Shallow Monitor Well <br /> in Uncontaminated Vadose Zone <br /> -82- <br />