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I <br />' Concrete Apron Locking Well Cover <br /> I a <br /> Slip Cap <br /> 2' Diameter Flush <br /> Neat Cement Threaded PVC Casing <br /> 10 <br /> I 20 <br /> Bentonite Plug <br /> _ +------8" Borehole Diameter <br /> 30 <br /> 40 <br /> 2' Diameter PVC <br /> 0 010 Screen <br /> I 5a 2116 Silica Sand <br /> �n -S <br /> x Plug <br /> u <br /> 60 <br /> Backfill <br /> I <br /> L70 <br /> FIGURE 3 - VAPOR WELL Protect No <br /> Geological Audit Services, Inc CV 42E1-1 8 <br /> �y <br /> Environ'L'."Psol"Nonsls Arco Mint Mart <br /> �rr Yorha Linde-Stockton 4511 Pacific Avenue 10 November <br /> Stockton, CA 1992 <br /> I <br />