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L �40 <br /> No additional soil will need to be excavated if the results <br /> indicate that the in-situ soil at the bottom of the excavated sites <br /> is at a level of non-concern. A certification of remediation and <br /> permission to close the site will be requested from the County <br /> Public Health Services Department by the Department of Public <br /> Works. Once approval to close the site has been given, the <br /> excavated areas will be filled with clean soil and properly <br /> compacted to eliminate settling. <br /> If the test results still indicate diesel contamination in one or <br /> both of the areas, the area(s) will be excavated an additional five <br /> feet after which a second sample will be collected from the in-situ <br /> soil at the tank and/or the dispenser location(s) . Depending on <br /> second test results, the Department of Public Works may excavate an <br /> additional 3 to 5 feet and again retest, or may seek to hire a <br /> professional engineering firm skilled at remediation of underground <br /> storage tank sites to develop a corrective action plan suitable to <br /> the County Public Health Services Department. <br /> SITE REMEDIATION PLAN <br /> The Department of Public Works proposes to remediate/dispose of the <br /> excavated contaminated soil by taking it to the Forward Inc. <br /> Landfill, which is a class II facility permitted to take diesel <br /> contaminated soil. <br /> L <br /> �..�` R:\WES\EN\CH\CLOSE\TANK.PLN <br />