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5.2 Recommendations <br /> The most important activity is to remove the floating oil from MW-2 on a relatively <br /> frequent basis (twice per month or monthly, depending upon the rate of"re-charge" of <br /> the oil) This will serve the two-fold goal of removing substantial contamination from <br /> the former site of the used oil UST, and bringing MW-2 to a condition to allow reliable <br /> measurement of depth to water and to secure a sample for analysis At this point, El will <br /> determine the direction of groundwater flow and elevation gradient These data, together <br /> with the results of analyses of groundwater from MW-2, will provide further insight into <br /> the extent of contamination of groundwater <br /> El recommends sampling the three groundwater monitoring wells quarterly to develop <br /> additional data on contamination levels, groundwater elevation and direction of <br /> groundwater flow This will show whether contamination levels are decreasing now that <br /> the apparent source has been removed, and will help to define whether any further <br /> exploratory work, or remediation work, is required <br /> Environeering,Inc. Mmpm3 No 89-012.02 <br /> 12 <br />