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MONITORING WELL <br /> CONSTRUCTION DETAILS <br /> PROJECT BEACON STATION #494 MONITORING WELL NO . MW-4 <br /> 2185 E FREMONT ST ELEVATION 20 29 It <br /> STOCKTON. CA <br /> Protective Casing <br /> Locking Water Tight Cap <br /> Flush Grade Well Construction <br /> Diameter and Mat'I 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 cement/ 5% <br /> Around Riser <br /> bentonite grout <br /> Thickness and Type 2 feet <br /> J of Seal bentonlie chips <br /> Distance of Filter Sand 2 feet <br /> Above Top of Screen <br /> Type of Filter J3 lonestar <br /> Around Screen <br /> Monitoring Well Mat'! SCH 40 PVC <br /> M Screen Gauge/Slot Size 0 020 inch <br /> a <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 /> LI = 0 25 It I <br /> L2 = 71 75 It MONITORING WELL WATER LEVEL MEASUREMENTS <br /> L3 = 15 It <br /> L4 = 87 it DATE TIME WATER LEVEL• <br /> 12-14-92 2 00 75 28 it <br /> COMPLETED 9 30 12-9-92 'Measuring Paint Top of casing <br /> ACTON MICKELSON VAN DAM , INC . <br />