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Summary of October 20011 Quarterly Groundwater Monitoring Results <br /> Field Activity <br /> Number of groundwater wells 12 Number of groundwater wells sampled 12 <br /> Number of groundwater wells monitored 12 Date(s)monitored and sampled 10/25,26/01 <br /> Site Hydrology <br /> Approximate depth to groundwater below 34.85 feet Average increase(+)/decrease(—) in depths +0.9 feet <br /> ground surface(bgs) bgs to groundwater since last sampling shallow <br /> Approximate flow direction and 0.003 ft/ft <br /> groundwater gradient east <br /> Groundwater Contamination <br /> Wells containing free product None Wells with detected odors 4 <br /> Number of wells with concentrations 8 Number of wells with concentrations at or 4 <br /> below benzene MCL above benzene MCL <br /> Nature of contamination: BTEX Range in concentrations: <br /> MTBE Benzene <0.3->17,000 <br /> TPH-G MTBE <1.0-390 <br /> (us/-G (us/-) <br /> <0.05—62 <br /> Additional Information <br /> Volatile organic compounds were analyzed by EPA Method 8021B. <br /> All wells were purged prior to sampling. <br />