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Nary�ERS ESiGVERS WNSIHiANTS <br /> 4.0 CONCLUSIONS <br /> Elevated concentrations of benzene, toluene, ethylbenzene, xylene, and TPH-G are present in <br /> groundwater in the vicinity monitor well MW-2A Much lower concentrations of benzene and <br /> TPH-G are present down gradient in monitor well MW-7 TPH-G is also present in monitor <br /> well MW-8, however this well is located in the vicinity of former USTs that were not associated <br /> with this site Petroleum hydrocarbons are not present up gradient and cross gradient of the <br /> former underground tank location Groundwater flow at the site is towards the northeast <br /> IIn general, detected concentrations in monitor well MW-2A are continuing to decrease, however, <br /> the reason for the detection of benzene and TPH-G in MW-7 is unclear In order to assess <br /> whether this detection is related to the seasonal rise in the water table, it would be advisable to <br /> collect two additional rounds of quarterly monitoring data before preparation of a corrective <br /> action plan <br /> I <br /> I <br /> C <br /> L 1F-mersamLS OMCHSA 2ND 16 Jimmy 1997 <br />