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Insfallafion of Flush Grade <br /> Monitoring Well <br /> PROJECT Beacon Station #494 MONITORING WELL NO MW-1 <br /> 21W East Fremont Street ELEVATION 18.98 feet <br /> Stockton, California <br /> Protective Casing <br /> I <br /> Locking Water Tight Cap <br /> Flush Grade Well ConstructTon <br /> Diameter and Mat'I 12—inch steel <br /> Total length 12 inches <br /> Length Above Ground 1/4 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 /> a <br /> Type of Backfill cement/ 5% <br /> Around Riser bentonite grout <br /> rt Thickness and Type 2 feet <br /> ME of Seal bentonite chips <br /> Distance of Filter Sand 2 feet <br /> Above Top of Screen <br /> Type of Filter 13 lonestar <br /> Around Screen <br /> Monitoring Weil Mat'I SCH 40 PVC <br /> M Screen Gauge/Slot Size 0 020 inch <br /> J <br /> Diameter and Length 4 Inch, 15 feet <br /> of Screen <br /> LE <br /> Depth to Bottom 83 feet <br /> of Monitoring Well <br /> Depth to the Bottom 83 feet <br /> of Fllter Sand <br /> 10 In <br /> L1= 0.25 feet I <br /> L2- 67.75 feet MONITORING WELL WATER LEVEL MEASUREMENTS <br /> L3= 15,0 feet DATETIME WATER LEVEL* <br /> L4= 83.0 feet <br /> . 4-17-92 2:40 71.45 <br /> Approximate Depth to <br /> Groundwater 72 feet •Measuring Point Top of casing <br /> ACTON 9 MICKELSON • VAN DAM, INC . <br />