Laserfiche WebLink
F <br /> l <br /> 41 <br /> Chronology 14000 Hwy 88, Lockeford <br /> Page 2 <br /> 09/08/98 Date of Corrective Action Plan using vapor extraction and air sparging <br /> (SVE/AS) for contaminant remediation that was subsequently approved by <br /> Environmental Health on 9/29/98. <br /> 814-5/99 Air sparge wells ASI-AS4 were installed. <br /> 12/13/99 The SVE/AS system was installed and startup was initiated on this date. <br /> is <br /> 02/17/00 During quarterly monitoring on this date 4.79 feet of free product was <br /> found in MWl. Hand bailing and a passive skimmer were used to remove <br /> the free product and MW1 was removed from use in the vapor extraction <br /> system. <br /> 09/01/03 The SVE/AS system operated continuously until operation was <br /> discontinued on this date due to low air contaminant concentration. <br /> 1111-2104 Secor drilled 3 soil borings(SB I2-SB14) in the release area to determine <br /> the soil contaminant concentration after remediation and to evaluate the <br /> SVE/AS operation. <br />�r <br /> 11/19/04 SVE/AS system was permanently shut down this date after being operated <br /> intermittently since September 2003. <br /> 03/17/05 Date of Results of Site Assessment, Site Conceptual Model, and Request <br /> ;5 For Site Closure report that included work done in November 2004. <br /> tlr 11/11/05 Date of addendum to the closure report prepared by Landau Associates. <br /> r <br /> h <br /> f <br />