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6-inch by 6-inch by 3-foot tall <br /> stovepipe security casing with <br /> Depth 36-inch radius concrete pad. Depth <br /> (feet bgs) Minimum 2.5-foot stick-up. (feet bgs) <br /> 5 5- <br /> 10 10 <br /> 15 2.5-inch diameter schedule 15 <br /> 40 blank PVC riser pipe <br /> 20 20 <br /> N � 25 25 <br /> –t< 30 30 <br /> � <br /> 35 <br /> Grout Cement� 35 <br /> v <br /> � 40 40 <br /> 45 45 <br /> S <br /> 50 50 <br /> 55 55 <br /> 60 60 <br /> -� 65 65 <br /> 70 70 <br /> Bentonite Chip Seal <br /> 75 75 <br /> Transition sand <br /> r (#60 sand) <br /> (�v 80 Top of Screened Interval 80 <br /> —Q20 foot screen interval <br /> 85 2.5-inch diameter,0.010-inch 85 <br /> slot schedule 40 PVC screen <br /> 90 Approximate Water Level 90 <br /> Filter pack material <br /> (#2/12 fine sand) <br /> 95 '' 95 <br /> a <br /> 100 6-inch threaded PVC • Bottom of Screened Interval 100 <br /> well base cap .' '";`';' • <br /> 105 •-,.,• x�; <br /> Total Borehole Depth 105 <br /> Figure 3—Well Design for 100-foot Deep Monitoring Wells at <br /> Micke Grove Park and Stockton East Water District Northwest Sites <br />