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loft <br /> FEET BELOW 12-in,Diameter Flush <br /> GROUND SURFACE Mounted Wall Vault <br /> `•"„r Bentonite Neat Cement <br /> Grout(with 3%to 5% G: 1 <br /> Bentonite) J <br /> Stainless Steel <br /> Cevtmtiurs <br /> 4 <br /> Bentonite Grout/Sand N <br /> Mixture(30% <br /> bentonite by weight) <br /> a <br /> O <br /> a rn N ^ <br /> -� 4-in.I.D.Flub Threaded <br /> or O Schedule 40 PVC Blank <br /> O yt Casing <br /> t` .-i Stainless Stec[ <br /> Centralizer ER <br /> Medium <br /> Bentonite Chips <br /> Transition Sand(No. <br /> 60 Sand or Equivalent <br /> 40x100 Sand) <br /> Monterey No.3 <br /> Filter Pack <br /> Medium <br /> Bentonite Chips <br /> Transition Send(No.60 10.5-inch I.D. <br /> --_--- ----- Sand or Equivalent 4-in.I.D.Flush <br /> 40x100 Sand) Borehole Threaded Schedule <br /> 40 PVC Perforated <br /> 4-m.I.D.Flush Threaded Casing with <br /> Schedule 40 PVC Perforated 0.020-in.Slots <br /> Casing with 0.020-in.Slots <br /> Monte No. Filter Pack Threaded <br /> I.D.Flush <br /> Monterey Threaded Schedule <br /> 40 PVC Blank <br /> 4-m.I.D.Flush Threaded Casing with 4-in. <br /> 10.5-Inch I.D. Schedule 40 PVC Blank I.D.Flush <br /> Borehole Casing with 4-in.I.D. Threaded Schedule <br /> Flush Threaded Schedule 40 PVC End Cap <br /> 40 PVC End Cap <br /> PROPOSED DESIGN OF PAIRED <br /> MONITOR WELLS <br /> Not to Scale FIGURE 3 <br />