SITE INFORMATION AND CORRESPONDENCE_FILE 2

Home Browse Search

r : of Chronology Page 4 2801 West Lane, Stockton 02/18/05 Date of Additional 1,2-DCA Investigation and Site Conceptual Model and Second Quarter 2004 Groundwater Monitoring Report which includes a discussion of the work done on 3/4/04 and a request for site clos re. 05/05/05 Date of the EHD letter in response to dditional 1,2-DCA Investigation and Site Conceptual Model and Second Quarter 2004 Groundwater Monitoring Report again denying URS's request for site closure because the 1,2-DCA plume was not defined. 07/07/05 Borings HP-9 and HP-10 were drilled on this date. 09/01/05 Borings HP-11 and HP-12 were drilled on this date. 02/15/06 Date of No Further Action Request (NFAR letter discusses the work done during July and September 2005 and recommends site closure based on declining trends of 1,2- DCA. 02/09/07 A Notice of Responsibility (NOR) was ma led to MCD Lazares Stockton LLC, a new property owner, on this date. 03/08/07 Date of the EHD letter regarding the No FurtherAction Request (NFAR) dated 2115106 in which the EHD required submittal of an updated Site Conceptual Model and a work plan for additional site assessment for 1,2- CA. 0417-10/08 Monitoring wells DMW-11 though DMW-14 were installed during this time. j 07/31/08 Date of Well Installation Report Monitoring Wells DMW-90, DMW-11, DMW-92, DMW- 13, and DMW-14 that discusses the April 2008 work and recommends site closure. i 10/23/08 Date of the EHD letter in response to the Well Installation Report Monitoring Wells DMW-10, DMW-11, DMW-92, DMW-13, ar7d DMW-14 in which the EHD required a few more sampling events to confirm the downward trends of 1,2-DCA. 07/19/08 Date of transfer of property ownership to the San Joaquin Regional Rail Commission. 04/20/09 Date of First Quarter 2009 Monitoring Report in which URS concludes that four more quarters of groundwater results demonstratea downward trend for 1,2-DCA. 07/24/09 Date of Closure Summary Report.