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{ <br /> RECENT QUARTER ACTIVITIES <br /> • • The First Quarter 1998 groundwater monitoring event was performed <br /> • The Fourth Quarter 1998 Quarterly Summary Report (QSR) was re-submitted with <br /> Gettler-Ryan Groundwater Monitoring Report attachment <br /> • The First Quarter 1999 QSR was submitted <br /> NEXT QUARTER ACTIVITIES <br /> • The Second Quarter 1999 quarterly sampling event will be performed <br /> • Ethanol, Tertiary-Butyl Alcohol (TBA), Di-isopropyl Ether (DIPE), Ethyl Tertiary-Butyl <br /> Ether(ETBE), and Tertiary-Amyl Methyl Ether (TAME)were not detected at the site <br /> during all four quarters of 1998 Furthermore, MtBE was not detected or was detected at <br /> very low concentrations during this same period Based on these results, and the fact that <br /> operations at this site ceased in 1962, which predates the use of oxygenates, IT <br /> recommends discontinuing all oxygenate analysis beginning the second quarter, 1999 <br /> • The First Quarter 1999 QSR will be re-submitted including the Gettler-Ryan <br /> Groundwater Monitoring Report attachment <br /> CHARACTERIZATION/REMEDIAL STATUS <br /> Soil contamination delineated9 Yes, <br /> Dissolved groundwater delineated? No <br /> Separate-phase hydrocarbons delineated? N/A <br /> Amount of groundwater contaminant recovered this quarter? N/A <br /> Soil remediation in progress?N/A <br /> Anticipated Start? N/A <br /> Anticipated completion date9 N/A <br /> Dissolved/free product remediation in progress? N/A <br /> Anticipated completion? N/A <br /> CONSULTANT International Technology Corporation <br />• <br /> 9100172B11QR99QSR1 3 March 16, 1999 <br />