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• i <br /> /00 Underground storage tanks were removed and the station was demolished <br /> L�((Ultomo starting this date. Approximately 200 cubic yards of soil was excavated from <br /> beneath the northwest and southeast dispenser islands and product lines. See <br /> Gettler-Ryan's Soil Sampling during Station Demolition Activities dated <br /> August 8, 2000, available on Questy's. <br /> 09/30/01 The soil vapor extraction system was shut down this quarter. The system <br /> removed an estimated 14,794 pounds of total petroleum hydrocarbons as <br /> gasoline and 183 pounds of benzene. <br /> 11/20/01 Ozone infusion points SP's 1-13 were installed beginning this date. See Gettler- <br /> Ryan's Ozone Microsparge Well & System Installation Report dated <br /> February 1, 2002, available on Questy's. <br /> 12/19/01 Remediation of the groundwater contamination by ozone infusion began this <br /> date. See the above referenced Gettler-Ryan report. <br /> 08/12/04 The soil vapor extraction system was restarted for a month; it was determined to <br /> be no longer cost effective to operate. The system was subsequently removed <br /> from the site in January 2005 after EHD approval to do so. <br /> 11/04/09 The ozone sparge system was shut down on this date. <br /> 12/18/09 Stantec Consulting Corporation submitted Results of Hydrogeologic Modeling <br /> report this date. <br /> 03/05/10 Stantec consulting Corporation submitted Quarterly Status Summary Report — <br /> First Quarter 2010 and Request for Low-Risk Case Closure this date. <br />