SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

Chronology page 2 2360 East Street, Tracy 01/14/98 Date of the Subsurface Investigation report that discusses the July 1997 work. 05/23/02 The date of the EHD correspondence notifying the responsible party that their request for closure (no further action) dated April 5, 2002 was denied. The ground water plume was not laterally and vertically defined and ground water concentrations of petroleum exceeded acceptable levels for closure. 07119-20105 Two cone pentrometer borings SB12D and SB13D and three push point borings SB14 — SB16 were completed during this time. 07/05/06 The date the EHD received Ground Zero Analysis Inc's, Investigation Summary ReportlSite Conceptual Model (SCM) dated June 30, 2006 on Geotracker that includes discussion of the July 2005 work. 10/12/06 The date of the EHD letter that comments on the SCM and requires further site investigation. 01/11/07 Date the responsible party, the EHD and Ground Zero Analysis met to discuss the site and required work plan. 09127-28107 Monitoring wells MW4 and MW5 and soil borings SB17-24 were completed during this time. 02/22/08 Date of the Subsurface Investigation report that discusses the September 2007 work. 01/09/09 The date soil vapor probes SV1—SV8 were installed and vapor samples collected. 04/06/09 The date the EHD received Lee & Pierce Inc's Soil Vapor Assessment Summary Report dated April 1, 2009. 05/13/09 Date of EHD letter requesting submittal of a closure report. 05/20/09 The date the EHD discusses site closure with Central Valley Regional Water Quality Control Board. 08/31/09 The date the EHD received Lee & Peirce Inc's Closure Request dated August 31, 2009 on Geotracker. 10/05/09 The date the EHD sends NFA Case Closure Summary, Chronology, and 30-day Notice letter to the CVRWQCB. 10/20/09 The date the EHD receives the CVRWQCB concurrence to NFA letter. 10/21/09 The date the EHD notifies RPs consultant that a work plan for monitoring well destructions should be submitted.