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1 V <br /> Figure 4 DeeMonitoring Well Construction Schematic <br /> r' C & B Equipment <br /> L 7474 West 11th Street <br /> Tracy, California <br /> �1 Project No. 336.2 <br /> MW-1 MW-101 Proposed <br /> Ground level <br /> Watertight well box <br /> LWaterproof locking cap <br /> 1 <br /> Groundwater level(7/95) — <br /> 12" Dia. Borehole <br /> tt Cement grout (TBA) <br /> —Well casing;. 2"schedule 40 PVC <br /> Total <br /> �r depth <br /> U (20') <br /> : ., <br /> seat into aquatard if present <br /> Existing well shown <br /> for comparison 2 2 8" Dia. Borehole <br /> r� Bentonite transition seal (3 ft) <br /> 0.020" slotted well casing, <br /> 2" schedule 40 PVC (2.57 <br /> nIt 3 sand filter pack (TBA) <br /> Total Silt Trap (2.5 ) <br /> depth <br /> 1•• (TBA) Incidental native <br /> or slough <br /> material <br /> Dnot to scale <br /> Ll CGeofogicaCTechnics Inc. d" 90"5 <br /> U <br /> 6 <br />