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WATER: <br /> Dissolved benzene in monitor wells MW-1, MW-2, MW-6, and Mid-8 <br /> substantially exceeded the action level for drinking water of 1.0 <br /> ppb, set by tha DHS, during the May quarterly sampling. Monitor <br /> well MW-4 and MW-9 contain considereably lower benzene values but <br /> are still above the action level while monitor wells MW-5 and MW-7 <br /> were below re;iorting limits for benzene. Monitor wells MW-3 and <br /> MW-10 were nOt sampled during this quarter because of gasoline <br /> product observed floating on top of the water and the presence of <br /> abundant gasoline sheen in these two wells respectively. EDB <br /> concentrations were below reporting limits for all wells sampled <br /> (HW-Z, MW-9, MW-4, MW-5, MW-6, HW-7, MW-8, and MW-9) . <br /> During the August quarterly sampling, dissolved benzene <br /> concentrations increased in monitor wells MW-2, HW-6, MW-7, and <br /> MW-8 from the prior quarterly sampling. These benzene levels are <br /> above the action levels, however, benzene concentrations have <br /> significantly decreased in monitor wells MW-4 and MW-9. Monitor <br /> well MW-5 remained the same with below reporting limits for <br /> benzene in water. Water samples were not collected because of <br /> measurable gasoline product in monitor wells Mg-1 (1.261) and MW-3 <br /> (1.661 ) along with observable gasoline sheen in monitor well Mw- <br /> 10. No water sample was obtainable from monitor well MW-2 due to <br /> depletion of the water during the "purging" process and subsquent <br /> Slow recovery. EDB concentrations for water samples collected <br /> were once again below reporting limits. This analysis will not be <br /> carried on for the next sampling. Complete water results are <br /> presented in TABLE 1 of this report. <br /> 3.3 CoNmus1oN5 <br /> 1. Based upon the results of our subsurface investigations, <br /> ! significant ground water contamination exists in monitor <br /> wells Mw-1 <br /> , MW-2, MW-3, MW-6, MW-8, MW-9, and MW-10. <br /> 2• The ground water flow direction is to the east. <br /> 3. Measurable gasoline product has been recovered from <br /> monitor wells Mw-1 and MW-3. <br /> 4. No soil contamination exists in monitor wells MW-1 thru <br /> HW-8 from the surface down to 65 feet below the surface. <br /> _ i <br /> 5. Minor soil contamination exists in monitor well MW-9 at <br /> 30 and 45 feet below the surface but is contaminant free <br /> from 5o feet to 65 feet below the surface. <br /> 6. Significant soil contamination exists in monitor well <br /> MW-10 from 40 feet. to 50 feet below the surface. <br /> J5 <br />