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I <br /> Table 6 <br /> i' Groundwater Monitoring Plan <br /> Disco Site <br /> Third Quarter 1999 Monitoring Plan Based on Monitoring Frequency Tree <br /> Location Well Frequency Reason <br /> Upgradient MW-DIS-4 No Sampling Non-detect for 6 events <br /> MW-DIS-5 No Sampling Non-detect for 8 events <br /> MW-DIS-6 No Sampling Non-detect for 17 events <br /> MW-DIS-7S No Sampling Non-detect for 5 events <br /> MW-DIS-7D No Sampling Non-detect for 8 events <br /> MW-DIS-8S No Sampling Non-detect for 7 events <br /> MW-DIS-813 No Sampling Non-detect for 10 events <br /> Downgradient TBI* NA NA <br /> Crossgradient MW-DIS-3 Annual Sampling Non-detect for 6 events <br /> MW-DIS-9 Annual Sampling Non-detect for 5 events <br /> MW-DIS-10 Annual Sampling Non-detect for 5 events <br /> Within Plume MW-DIS-1 Quarterly Sampling Concentrations reducing <br /> MW-DIS-2 Quarterly Sampling Concentrations reducing <br /> NP-1-70' Quarterly Sampling Concentrations stable <br /> NP-1-80' Quarterly Sampling Concentrations stable <br /> NP-1-90' Quarterly Sampling Concentrations stable <br /> *TBI: To Be Installed, Fall 1999. <br /> Semi-Annual Sampling: First and Third Quarters <br /> Annual Sampling:Third Quarter <br /> i <br /> I� <br /> frequency.xis 8110199 <br />