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Chronology page 2 <br />95 West 11 1h Street, Tracy <br />10120103- A second excavation of soil began on this date to remove contaminated soil' left <br />in place after the October 2000 excavation. 670 cubic yards of contaminated soil . <br />was removed from October 20 to November 12, 2003. MW=2 was destroyed and <br />a 500 gallon steel underground storage tank (UST) was found during excavation <br />activities. Liquid petroleum in the UST leaked .into the excavated area and the <br />groundwater as the UST was removed. <br />10/24/03 An Unauthorized Release Form for the newly discovered UST was completed on <br />this date. <br />03/23/04 Date of the AGE's .Well Destruction and Excavation Report that discusses the <br />work performed in October and November.2003. <br />07/27/04 Monitoring wells MW -6 and MW -7 were installed on this date. <br />10/14/04 Date. of AGE's Monitoring Well Installation and Quarterly Monitoring Report <br />detailing the installation of MW -6 and MW -7 in July 2004 and the groundwater <br />sampling event in August 2004. <br />06/30/05 Monitoring wells MW -8 through MW -10 were installed on this date. <br />12/12/05 Date of AGE's Monitoring Wells Installation and „Quarterly Monitoring Report <br />detailing the, installation of MW.' -8 through MW -10 on June 30, 2005 and the <br />groundwater sampling event held on August 31. 2005. <br />10/18/07 Date of AGE's Additional Site Assessment Report that details the installation of <br />soil borings B-10 through B-15 offsite (in Adams Street) acid further 'to the west <br />(west sidewalk). <br />05/20/08 Monitoring wells MW -11 through MW -13 were installed on this date. <br />07/03/08 Date of AGE's Additional Site Assessment Report that details the installation of <br />MW -11 (offsite west Adams Street sidewalk)- and MW -12 & MW -13 onsite. <br />05/13/09 The date of the EHD correspondence that requests a No Further Action (NFA) <br />Report be submitted. <br />09/08/09 The date the of the NFA`report. <br />10/21/09 Date the EHD informed the Central Valley Regional Water Quality Control Board <br />the site was being prepared fora concurrence request on NFA. <br />