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quite evident as shown on EXHIBIT B; the predominently north & <br /> south gradients have been colored to show the wide variations in <br /> direction. <br /> 2. All three wells have been in downgradient positions at <br /> various times since measurements & sampling began. <br /> 3. Benzene has been measured in MW-1 in three (3) of the 1.3 <br /> sampling periods, it has not been detected since 1/31/94. Xylene <br /> was seen only once 1993, <br /> limits foryal] ree <br /> in 11 <br /> times_ MW-2 & <br /> tested substances since monitoring began. <br /> 4. It appears that levels of TPH as diesel are approaching an <br /> irreducible minimum, <br /> xbelowbioremediation <br /> l.evels£educed the <br /> other petroleum constituents <br /> RECOMMENDATION <br /> Based on an analysis of all of the data collected to date, it is <br /> believed that soil & groundwater at this site have been reduced <br /> to levels which will not pose a threat to the environment. We <br /> believe that further sampling & testing is unnecessary and <br /> 01 request that monitoring activities be discontinued, the three <br /> wells properly destroyed, closed tained spoils & purge fluids be <br /> dis/pyo' d o and <br /> W <br /> Wm _ er & Associates <br /> c M �rc1 Diesel Service <br /> eth Thayer, CRWQCB <br /> Tim Kirk, Garrison Law Corp. �p GEO., � <br /> IMLL41N1 J HUNTA <br /> * NO 650 <br /> sr9 OF CF01-1 � <br />