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SUMMARY OF W& C <br /> ASSESSMENTS <br /> 1 . A portion of SD-5 plume is <br /> discharging into Johns Pond <br /> 2. Area of elevated TCE exists : <br /> uncertain of relation to SD-5S <br /> 3. Although upwelling of plume <br /> into pond has been <br /> documented , lack of soil and <br /> hydrologic data and elevated <br /> TCE at lower portions of <br /> plume suggest possible <br /> underflow of pond . TCE hits <br /> above 5 ppb at depth support <br /> ' this concern <br />