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,f <br /> I <br /> I <br /> CHRONOLOGY <br /> 4325 E.WASHINGTON STOCKTON <br /> SITE CODE: 1753 <br /> APN: 157-337-08 <br /> 03/23/85 EHD received soil results for soil sampling:gasoline contamination identified. <br /> i <br /> 03/26/85 Additional soil borings performed and monitoring wells installed:gasoline contamination <br /> identified in boring converted to MW's. <br /> 06/27/85 Groundwater in on site MW"s contaminated with gasoline,further assessment required. <br /> 07/26/85 Raw product was evidenced on site in MW#5 during QM. <br /> 07/08/87 3 UST removed along with contaminated soil in the backfill. <br /> 07/08/87 VES pilot test completed:based on data collected VES was chosen as a remedial action and <br /> will be implemented. <br /> 10/15/87 Contaminated soil aerated on site: after sampling,aerated soil placed back in the tank <br /> excavation. <br /> 01/16/92 UAR filed by EHD for releases identified back to 1985. <br /> 12/12/95 VES operated from I989 through 1995 and removed an estimated 106,065 pounds of <br /> gasoline. <br /> 12/19/96 Two confirmation boring completed in area of release which indicates low residual vadose <br /> contamination. Groundwater currently N.D.for gasoline. <br /> 04/11/97 EHD competed case closure summary and referred site to CVRWQCB for closure <br /> concurrence. <br /> .chrn4325 <br />