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kWA 'T-E <br /> "C LEAR <br /> G R o U P <br /> Envronmcnla! SerUces <br /> degradation at the plume edges, the conditions seem to favor the slower anaerobic processes at <br /> the core of the plume <br /> SUMMARY AND CONCLUSIONS <br /> Results from this quarterly monitoring event appear to confirm results reported from previous <br /> groundwater monitoring activities, that the contaminant plume is stable and delineated <br /> Contaminant concentrations appear to be highest in the in the area of monitoring well MW-5B <br /> PROJECT STATUS AND RECOMMENDATIONS <br /> Clearwater recommends continuation of groundwater monitoring for MNA parameters in wells <br /> MW-1, MW-4 and MW-5B for three more quarters, and for contaminant concentration in wells <br /> MW-1 through MW-8 to confirm results reported herein and to determine contaminant <br /> concentration and distribution trends over the near future Clearwater suggests adding MW-8 to <br /> the MNA schedule to confirm that aerobic processes are occurring at the plume edge <br /> downgradient of the core <br /> i <br /> ZB178C/1Q03 Monitoring Rpt 10 April 23,2003 <br />