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' <br /> %ftod <br /> CHRONOLOGY <br /> Fisco Warehouse <br /> 1648 Shaw Road <br /> Stockton, CA 95215 <br /> 10/03/86 Two 55O-gaUonunderground storage tanks were removed onthis date under EHDpermit <br /> and inspection. One soil sample for laboratory analysis was collected from the bottom of <br /> the common tank pit. Analytical results reported petroleum hydrocarbon impact. <br /> 05V18/88 Unauthorized Release Report submitted onthis date. <br /> 12/17/98 Site placed in the Local Oversight Program unthis date. <br /> 09y18/97 A site investigation began on this data with the advancement of five Geopnzbe soil <br /> borings (B1 thru 135). See Advanced GeoEnvironmonha|'s (AGE) Preliminary Site <br /> Investigation Report dated December 30. 1SS7. <br /> 2/22-24/00 Three borings were drilled and dual casings were installed in each for completion of three <br /> groundwater monitoring wells (MVV1 thru MVV3) and three soil vapor extraction <br /> remediation wells (VVV1 thru \&W3) on these dates; see AGE'a First Quarter 2000 and <br /> Monitoring Well Installation Report dated June G. 2000. This mmppd also has ovvaU <br /> receptor survey. <br /> 2y5-6/01 Four additional groundwater monitoring wells (MVV4 thru MVV7) vvere installed during this <br /> time for |ah*ns| definition of the contaminant plume; see AGE's First C)uedor 200/ <br /> Groundwater Monitoring and Well Installation Report dated March 23, 2001, <br /> 1/10'11/02 Cone PenotromoturTamt (CPT) borings (CPT1 thru CPT3) wore performed on these <br /> dates; see AGE'sCPT Investigation Report dated April 17. 2OO2. <br /> 01/14/02 An eight-hour soil vapor extraction (SVE) pilot test was conducted on this data; see <br /> /\GE'sSoil Vapor Extraction Pilot Test Report dated May 1G. 2DU2. <br /> 07/31/03 One deep groundwater monitoring well (K8VV8) was installed on this date; see AGE'a <br /> Third Quarter 2003 Groundwater Monitoring and Well Ino&e&ybon Report dated <br /> June 30. 2DO4. This well defined the vertical extent of the groundwater plume. <br /> 01/20/05 A Feasibility Study was submitted on this date; see AGE's Interim Corrective Action Plan <br /> dated January 2O. 2OU5. <br /> 12/05/05 Four additional shallow groundwater monitoring wells (MVV8 thru k4VV12) vvere installed <br /> beginning onthis date because the groundwater elevation had dropped and the existing <br /> shallow wells had not consistently yielded water for three years; seeAGE'a Quarterly <br /> Re��ort—Fou/�hQumd8r20D5dated February S. 2O08. ' <br /> 01/04/06 Amtartup test of the pormnmnont8VE system was performed on this date. The SVE <br /> system subsequently operated until May 30, 2008. Arebound test was conducted on <br /> October 27. 2OO8. <br /> 4/14-15/00 Two confirmation soil borings were advanced byGeoprobe (p1 & P2) onthese dates. <br /> The analytical results reported TPHd remaining in the former tank pit area soi|, but at <br /> greatly reduced concentrations. The concentrations of TPHd contamination remaining in <br /> soil between 5-15feet bsgdonot exceed the ESL's for direct exposure. The remaining <br /> TPHd mass in soil is doep, mostly dieam|, and not likely to volatilize. See AGE's <br /> Confirmation Soil Boring Report dated May 7. 20US' The Report recommends site <br /> dosuve, contains estimates for mass of contamination removed and namnaining, and <br /> addresses risks of vapor intrusion, direct exposure and gross contamination. <br />