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1 <br /> ' TRAFFIC RATED WELL VAULT <br /> GROUND SURFACE SET IN CONCRETE <br /> ' 10-INCH-DIAMETER BOREHOLE <br /> CASING CENTRALIZER <br /> 3-TO 5-PERCENT BENTONITE- <br /> CEMENT GROUT TO BASE OF <br /> SURFACE COMPLETION <br /> 4-INCH-DIAMETER SCHEDULE-40 PVC CASING <br /> CASING CENTRALIZER <br /> BENTONITE SEAL <br /> FINE SAND r' <br /> ' 4-INCH-DIAMETER SCHEDULE-40 PVC <br /> 0.020-INCH SLOTTED SCREEN <br /> SCREENED INTERVAL 6 TO 21-FEET BGS <br /> NO.3 MONTEREY SAND - <br /> (OR EQUIVALENT) <br /> CASING CENTRALIZER NOT TO SCALE <br /> THREADED PVC END CAP TOTAL DEPH= 2 FEET BGS <br /> ' NOTE:BGS=BELOW GROUND SURFACE <br /> GJ� qj3 89 <br /> t FIGURE 2 <br /> SCHEMATIC DIAGRAM OF <br /> MONITORING WELL <br /> KOPPEL STOCKTON TERMINAL <br /> ' MW_WPLAN-002.FH70 STOCKTON,CALIFORNIA <br /> CH2MHILL <br />