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Summary of Activities <br /> A chronology of activities associated with the USTs at the Stockton Service Center <br /> is as follows <br /> ' Activity Date <br /> ' District removes UST, petroleum hydrocarbons detected in soil beneath July 1987 <br /> tank <br /> Klemfelder conducts soil and groundwater assessment, installs three May 1989 <br /> groundwater monitoring wells <br /> District removes two USTs, Klemfelder conducts additional assessment September 1989 <br /> activities <br /> Weston conducts soil and groundwater assessment, installs February 1991 <br /> four groundwater monitoring wells <br /> Weston conducts second quarter 1992 groundwater momtormg July 1992 <br /> Weston conducts third quarter 1992 groundwater monitoring October 1992 <br /> Weston conducts first quarter 1993 groundwater monitoring March 1993 <br /> Weston conducts second quarter 1993 groundwater monitoring May 1993 <br /> ' Black & Veatch conducts additional assessment activities, installs two September 1993 <br /> wells and collects seven HydroPunch Il" groundwater samples <br /> ' Black & Veatch conducts third quarter 1993 groundwater monitoring September 1993 <br /> Black & Veatch conducts fourth quarter 1993 groundwater monitoring December 1993 <br /> ' Black & Veatch conducts first quarter 1994 groundwater monitoring February 1994 <br /> Black & Veatch conducts second quarter 1994 groundwater monitoring May & June 1994 <br /> Black& Veatch conducts third quarter 1994 groundwater monitoring August 1994 <br /> District submits the Additional Site Assessment and Remedial Options September 1994 <br /> Report and Addendum No 1, Remedial Action Plan to SJCPHS and <br /> the Central Valley RWQCB <br /> Black & Veatch conducts fourth quarter 1994 groundwater monitoring November 1994 <br /> ' Black & Veatch conducts first quarter 1995 groundwater monitoring March 1995 <br /> and step draw down test of aquifer <br /> ' District submits Remedial Action Plan Addendum No 1 to SJCPHS April 1995 <br /> and the Central Valley RWQCB <br /> District receives the general waste discharge permit from the Central May 1995 <br /> Valley RWQCB <br /> 96R7 Fast Bay Municipal Utility District <br /> ' 40429700 fcr Final Closure Plan <br />