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4.0 SUMMARY <br /> In February 1997,Amerco Real Estate Company authorized Blaes Environmental and TPS Technologies to <br /> conduct a soil treatment program on stockpiled soil from an underground storage tank release at U-Haul <br /> facility#709-83 located at 450 North Cherokee Lane in Lodi California. The program involved loading and <br /> transporting 75.25 tons of stockpiled soil from the site to TPS Technologies fixed thermal treatment plant <br /> in Richmond,California. The soil was treated using a thermal desorption process. The treated soil was then <br /> sampled to verify that the treatment process was effective in destroying the petroleum hydrocarbon <br /> concentrations in the soil. <br /> The laboratory results of the confirmation soil sample indicated that treated soil did not contain detectable <br /> concentrations of TPH using EPA Method 8015 Modified, BTEX using EPA Methods 5030/8020,or MTBE <br /> using EPA Methods 5030/8020. Based on this data,the soil treatment program was effective in destroying <br /> the previously elevated concentrations of petroleum hydrocarbons in the soil at the site. The thermally <br /> treated soil was left at TPS Technologies facility to be used as backfill in the West Contra Costa Sanitary <br /> Landfill in Richmond, California. <br /> Based on the laboratory results from this soil thermal treatment program, Amerco/U-Haul requests <br /> confirmation of"no further action required" for this facility. <br /> �'' 9 <br />