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L. <br /> Lr Summary of Activities <br /> �An , 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 /> Lr <br /> HIeinfelder conducts soil and groundwater assessment; installs three May 1989 <br /> groundwater monitoring wells. <br /> i"" District removes two USTs; Kleinfelder 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 monitoring. July 1992 - <br /> V <br /> Weston conducts third quarter 1992 groundwater monitoring. October 1992 <br /> Weston conducts first quarter 1993 groundwater monitoring. March 1993 <br /> Lw <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 If' 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 /> Le 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 PIan to SJCPHS and <br /> the Central Valley RWQCB, <br /> 1. 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 /> L.. <br /> 96R7 A-4 Fast Bay Municipal Utility District <br /> 40429700.fcr Final Closure Plan <br />