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MONITORING WELL <br /> ' CONSTRUCTION DETAILS <br /> PROJECT: BEACON STATION #494 MONITORING WELL NO.: Mw-4 <br /> 2185 E F5T <br /> STOCK70N, ELEVATION: 20.29 ft <br /> CA CA <br /> ' } — Protective Casing <br /> 1 <br /> I) Locking Water Tight Cap <br /> Flush Grode Well Constructlon <br /> Diameter and Mat'1 12—inch steel <br /> Total length 12 Inches <br /> ' Length Above Ground 1/2 Inch <br /> Thickness and Type of Seal 2 feet, concrete <br /> Diameter. Mat'I and 4 Inch, SCH 40 PVC, <br /> ' Joint Type of Riser Pipe flush thread <br /> N <br /> Type of Backfill <br /> cement/ gy, <br /> ' <br /> Around Riser <br /> bentonite grout <br /> d Thickness and Type 2 feet <br /> a of Seal bentonite chips <br /> Distance of Filter Sand 2 {eat <br /> Above Top of Screen <br /> ' Type of Filter #3 lonestar <br /> Around Screen <br /> Monitoring Well Mat'l SCH 40 PVC <br /> M Screen Gauge/Slot Slze 0.020 inch <br /> ' Diameter and Length 4 Inch, 15 feet <br /> of Screen <br /> ' Depth to Bottom 87 feet <br /> of Monitoring Well <br /> Depth to the Bottom 87 feet <br /> of Filter Sand <br /> 10 In <br /> L1 = 0.25 it I <br /> L2 = 71.75 ft MONITORING WELL WATER LEVEL MEASUREMENTS <br /> ' L3 = 15 It <br /> L4 = 87 ft DATE TIME WATER LEVEL* <br /> 12-14-92 2:00 75.28 ft <br /> COMPLETED: 9:30 12-9-92 e <br /> Measuring paint Top of easing <br /> ' ACTON • MICKELSON 9 VAN DAM, INC. <br />