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' Insiailotion of Flush Grade <br /> Monitoring Well <br /> PROJECT: Beacon Station #494 MONITORING WELL NO.: MW-1 <br /> 2185=East Fremont Street ELEVATION: 18.98 feet <br /> Stockton, California <br /> 1 <br /> i <br /> ' Protective Casing <br /> Locking Water Tight Cap <br /> Flush Grade Well Construction <br /> Diameter and Nat'l 12—Tnch 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'? and 4 Inch, SCH 40 PVC, <br /> 1 Joint Type of Riser Pipe flush thread <br /> N <br /> J <br /> Type of Backfill cement/ 5% <br /> Around Riser <br /> bentonite grout <br /> Thickness and Type 2 feet <br /> of Seal bentonite chips <br /> Distance of Filter Sand 2 feet <br /> Above Top of Screen <br /> ' Type of Filter J3 lonestor <br /> Around Screen <br /> Monitoring Well Mat'l SCH 40 PVC <br /> Screen Gauge/Slot Size 0.020 inch <br /> Diameter and Length 4 Inch, 15 feel <br /> of Screen <br /> Depth to Sattam 83 feet <br /> of Monitoring Well <br /> Depth to the Saftorn 83 feet <br /> I of Filter 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 <br /> L4= 83.0 feet DATE TIME WATER LEVEL* <br /> 4-17-92 2;40 71.45 <br /> Approximate Depth to <br /> Groundwater 72 'feet 'Measuring Point TO of casing <br /> 9 <br /> ' ACTON + MICKELSON VAN DAM, INC. <br />