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WEGE WELL CONSTRUCTION LOG <br /> PROJECT NAME SANCHEZ MONITOR WELL NUMBER PZ7-A <br /> 1876 Country Club Blvd , Stockton TOP OF CASING ELEVATION 3.41 <br /> PROJECT NUMBER DATE COMPLETED JANUARY 7 2003 <br /> WELLTYPE PIEZOMETER <br /> REMARKS: WELL INSTALLED-THROUGH 8INCH HOLLOWSTEM AUGERED <br /> BORING <br /> TYPICAL MONITORING <br /> WELL <br /> WELL CONSTRUCTION <br /> - 1 Total Depth of hole 22 FT <br /> 2 Diameterof boring 81NCH <br /> i18 3 Casing lengt a0 FEET <br /> 4 <br /> 4 Diameterof casing ?INCH <br /> -9- <br /> 5 Depth to top of screen 15 FEET <br /> 10 - 6 Length of scree _5FEET <br /> screen Interval 15'-20.0' <br /> — 1 screen typ MONOFLE FF48Q <br /> 3 screen size 0.010 INCH <br /> 7 Surfaceseal 8"TRAFFICBOX <br /> seal material CONCRETE <br /> 11 I 8 Backfill 6"-10' <br /> seal material NEATCEMENT <br /> 9 Upperseai 10'- 13' <br /> seal material BENTONITE <br /> ___ _ 10 Lower seal <br /> seal material <br /> 2 <br /> 11 Annulus 13'- 22' <br /> material #2112 SAND <br /> NOTE: Well constructed with polyvinyl chloride(PVC) <br /> casing with threaded bottom cap and slip on top cap <br /> Also,PVC steam cleaned before constructing each well <br /> Traffic boxes are water tight and locked for security <br />