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SITE CHRONOLOGY <br /> 13430 N.LOWER SACRAMENTO ROAD <br /> LODI,CA 95242 <br /> SITE CODE: 1996 <br /> APN#:058-070-06 <br /> 01/29/88 Three UST's removed under inspection,two 500 gal.tanks(tank#1 and#2)and one <br /> 250 gal.tank(tank#3). One 250 gal.tank(tank#4)located partially under a building to <br /> remain. <br /> 02/22/88 Soil analysis from tank removal indicates: Tank#3 positive for TPH at 2500ppm <br /> benzene 3000ppb,toluene 14000ppb,xylene 12000ppb, EDB was ND. Tank#4 <br /> positive for benzene 7.3ppb,toluene I000ppb,xylene 15ppb,TPH and EDB were <br /> ND. Tanks#1 and#2 were ND for all. <br /> 03/18/88 UAR filed;Prop.65 completed. <br /> 01/18/90 Tank#4 closed in place under inspection;filled with approximately 1.5 yards of <br /> slurry cement. <br /> 11/28/94 Notice of Reimbursement letters sent to both Fred and Elwood Alberg(responsible <br /> parties). <br /> 11/29/94 Site placed in PHS/EHD L.O.P. . <br /> 08/17/95 Overexcavation of approximately 200 cubic yards of soil from former tank#3 site. Six <br /> soil samples collected from floor and sidewalls of the excavation;five composite <br /> soil samples collected from the stockpiled soil. <br /> 08/30/95 Report received on 8/17/95 soil samples indicates one hot spot,east side wall under <br /> structure 14'bsg TPHg at 340ppm. Floor sample at 16'bsg was ND for contaminants. <br /> 09/07/95 Given OK to backfill excavation. <br /> 06/05/96 Two soil borings:B1,20 degree angle under building advanced to 25'bsg. <br /> B2, 10 degree angle advanced to 25'bsg. Samples collected at 5' intervals. <br /> Sample B2 had PID detectable organic vapors at 10' and 15'. TPHg was 1000ppm <br /> and xylene was.61ppm in sample 132-10. B2-15 was ND for contaminants. <br /> 09/16/96 Closure Summary Report submitted by Advanced Geo-Environmental Inc. <br /> estimates 22 gal.of gasoline remaining in an estimated 65 cubic yards of soil under the <br /> building. Report recommends site closure. <br /> i <br />