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Approx.Land Surface DRAFT-SUBJECT TO REVISION <br /> Ehe sti a®29 feet MSL <br /> 12-in.Diameter <br /> L 2 FT J Traffic-gated Flush <br /> Mounted Wcll Vault <br /> Land Surface <br /> Class A Concrete Surface Seal <br /> 5 feet below land surface(ft bls) <br /> I <br /> Bentonite Neat Cement Grout with <br /> 3%to 5%bentonite <br /> 2-inch Diameter Schedule 40 <br /> PVC Blank Casing <br /> 45 ft his <br /> �Medium Bentonite Chips or Bentonite Pellets <br /> 55 Transition No.60(40x100)Sand <br /> 60 <br /> 55 8x20 Gravel Envelope(i.e.Sand Filter Pack) <br /> 2-inch Diameter Schedule 40 PVC <br /> Perforated Casing with 0.020-Inch Slots <br /> 75 2-inch Diameter Schedule 40 PVC Blank <br /> 80 Casing(Sump) <br /> 7.785-inch <br /> Borehole Diameter <br /> Schematic of <br /> Proposed Design <br /> for Shallow Zone <br /> Monitoring Well <br /> MW-402 <br /> Proposed Approximate Location: FIGURE 3 <br /> Latitude:37.970 N, <br /> Longitude: 121.23'W NOT TO SCALE DUDEK <br />