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Port of Stockton <br /> Existing Piezometers, Present Use, Potential for Future Use Vs Decommissioning <br /> Piezometer Quarterly Water Decommission - rationale <br /> Designation Sampling Levels <br /> PS/P-1 No No Yes - damaged &inaccessible <br /> PS/P-2 No Yes Yes - monitoring wells are up-and down-gradient <br /> PS/P-3 No Yes Yes - monitoring wells are up- and down-gradient <br /> PS/P-4 No Yes Yes - monitoring wells are up- and down-gradient • <br /> PS/P-5 No Yes Yes - monitoring wells are up- and down-gradient <br /> PS/P-6 No No Yes -damaged & inaccessible <br /> PS/P-7 No Yes Yes -damaged & inaccessible <br /> PS/P-8 No Yes Yes- monitoring wells are up- and down-gradient <br /> PS/P-9 No Yes No - near revised IRAP Trench, may provide monitoring point <br /> PS/P-10 No Yes No -adjacent to revised location of ]RAP Trench <br /> PS/P-11 No Yes No - monitor free product levels, lateral extent <br /> PS/P-12 No Yes No - monitor free product levels, lateral extent <br /> PS/P-13 No Yes No - monitor free product levels, lateral extent <br /> PS/P-14 No Yes No - located behind UNOCAL, provide water level data if UNOCAL wells are decommissioned <br /> PS/P-15 No No Yes -damaged & inaccessible <br /> PS/P-16 No No Yes -damaged & inaccessible <br /> PS/P-17 No Yes Yes -damaged <br /> PS/P-18 No Yes Yes -beyond limits of A zone Plume - upgradient of potential sources <br /> PS/P-19 No Yes Yes -beyond limits of A zone Plume - upgradient of potential sources <br /> PS/P-20 No Yes Yes-beyond limits of A zone Plume - upgradient of potential sources • <br /> PS/P-21 Yes Yes No- upgradient monitoring point in Quaterly Monitoring Program <br /> PS/P-22 No Yes Yes -adjacent to piezometers in QMP <br /> PS/P-23 Yes Yes No- upgradient monitoring point in Quatcrly Monitoring Piuyram <br /> PS/P-24 No Yes Yes -adjacent to piezometers in QMP <br /> PS/P-25 No Yes Yes - adjacent to piezometers in QMP <br /> PS/P-26 Yes Yes No - upgradient monitoring point in Quaterly Monitoring Program <br /> PS/P-27 No Yes Yes - adjacent to piezometers in QMP <br /> PS/P-28 No Yes Yes - adjacent to piezometers in QMP <br /> PS/P-29 Yes Yes No- upgradient monitoring point in Quaterly Monitoring Program <br /> PS/P-32 No Yes Yes-adjacent to monitoring wells <br /> Page 1 <br />