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occasions (their validity is somewhat questionable, because the reported concentrations exceeded <br /> • those in most other wells on those dates) Now that the static water level has fallen below 60 feet, <br /> groundwater is not in contact with contaminated soil and 'concentrations are close to the detection <br /> limit in most of the wells The exception is GT-6, where the concentration has declined only <br /> slightly since May 2002 <br /> It is also worth noting that the diesel concentration in GT-5 rose slightly above the detection limit <br /> this quarter, when groundwater flow is northward from the former tank cavity toward that well <br /> These two observations are compatible, but they also imply that flow toward GT-5 does not result <br /> in a mayor migration of diesel toward the Gillies domestic well This indicates that the extent of <br /> diesel in groundwater is limited in extent when the water level is within the Modesto aquitard <br /> A <br /> 4 <br /> • 4 <br />