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Attachment 1 ARO DIS <br /> Preliminary Piezometer Construction Diagram LJN <br /> CDCR Property,Newcastle Road,Stockton,California <br /> Stove-Pipe or J-Plug <br /> Traffic Rated Portland Type 1/11 <br /> Well Box Cement 4foot Wide Project Forward Landfill Wells CDCR-PZ-XX <br /> Sand Plinth <br /> LAND SURFACE Town/City Stockton <br /> County San Joaquin County State California <br /> 3 feet Permit No.TBD <br /> Land-Surface Elevation and Datum: <br /> Neat Cement Grout up to 3 feet below surface feet Surveyed <br /> Estimated <br /> Installation Date(s) TBD <br /> Drilling Method TBD <br /> Blank Riser <br /> 2 inch Diameter, Drilling Contractor TBD <br /> Sch.40 PVC <br /> Remarks: <br /> Borehole <br /> Minimum 6 inch Diameter <br /> TBD feet <br /> Hydrated Bentonite Chip Seal <br /> 5 feet <br /> TBD feet <br /> 3 feet #2/12 Washed Silica Sand Filter Pack or Equivalent to Match Screen Slot Size <br /> Centralizer <br /> 20-30 feet(TBD) Screen-2-inch Sch 40 PVC,Slot Size 0.01-inch <br /> 75-95 Feet Total Well Depth(TBD) <br /> Notes: <br /> 1.Exact well completion depth,screen length and placement to be <br /> DRAWING IS NOT TO SCALE determined based on lithology at each well location <br /> 2.Soil logged in accordance with ASTM designation D2488 <br /> 3.Centralizers to be placed at bottom and top of screen and near surface <br /> 4.Grout placed with tremie pipe and positive displacement <br /> 5.Anticipated depth to water 60-70 feet below ground surface <br /> 6.Well to be surveyed by licensed surveyor <br /> 7.Plinth sloped to drain water away from well <br /> TBD-To be determined <br /> CDCR Tables and Well Construction Feb 2022 <br /> 3/4/2022 <br />