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Chevron Chronology 03/10/2011 <br /> 8660 Lower Sacramento Rd. pg. 2/2 <br /> 02/18/2008 The date of the Ground Water Oxygenation Work Plan prepared by <br /> Conestoga-Rovers & Associates (CRA). <br /> 08/13/2009 Oxygen injection was conducted from June 2008 and discontinued on this <br /> date. <br /> 08/10/2010 The date of the CRA Site Conceptual Model and Closure Request. <br /> 10/ 13/2010 EHD and CVRWQCB staff met on this date to review this site for closure. <br /> CVRWQCB recommended one additional sampling round from MW-7. <br /> EHD notified CRA of the meeting results and recommend sampling MW- <br /> 7, per CVRWQCB 's request. <br /> 02/07/2011 The date of CRA' s December 30, 2010 MW- 7 Sampling Event. The report <br /> contained additional ground water analytical results from MW-7 . <br /> 03/04/2011 EHD prepared a Case Closure Summary and updated the Site Chronology <br /> for the CVRWQCB . A 30-day closure concurrence request will be <br /> provided to the CVRWQCB . <br />