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r>„ <br /> i <br /> Chevron U.S.A. <br /> Page 21 <br /> 6.0 CONCLUSIONS <br /> It is Dames&Moore's opinion,based on observations and analyses made during the <br /> remedial activities on site,that the aeration process has removed the hydrocarbon <br /> contaminate residues from the treated soils. These soils were replaced in the <br /> - excavation at the site and constructed as an engineered fill. At the relative density <br /> - <br /> of 90%or better,the potential for migration of any future contaminate has been <br /> significantly reduced by the methods employed. <br /> T The site has been finish-graded so as to minimize any drainage to neighboring <br /> r , properties other-than to the frontage road to the west. It is Dames&Moore's opinion <br /> that the contractor has made an assertive effort to minimize dust and further <br /> inconveniences to the adjacent neighbors. <br /> ',_ isaaa-zso-ou <br />