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iCONCLUSION <br /> Laboratory analyses of the latest set of water samples from MW-4 and MW-5 indicate that the <br /> local groundwater beneath the former asphalt plant has not been affected by the petroleum <br /> contamination found in the upper surface soil layers during the installation of the wells This <br /> finding supports the results of the previous sets of water samples analyzed by STL in February <br /> and July 2003 Analysis of the water sample from MW-6, the well installed on the other side of <br /> the arroyo, however, appears to indicate that petroleum contamination may have contacted the <br /> groundwater in that location RMC will continue to monitor the water in both locations in an <br /> effort to better understand the conditions that exist in the subsurface <br /> • <br />