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The pile of used sand will be covered with plastic sheets, secured by sand bags or other <br /> means to prevent rain water from contacting the sand, or wind from blowing it away. <br /> If the above composite sample analysis result is above 25 mg/kg and below 2500 mg/kg, <br /> the laboratory will be asked to provide an STLC analysis for copper using 0.20 M Citrate <br /> Buffer extraction solution. If this result is 25 mg/L or higher,the used sand will be sent to <br /> an approved hazardous waste disposal site under manifest. <br /> If the TTLC result is 2500 mg/kg or above, the used sand will be sent to an approved <br /> hazardous waste disposal site under manifest. <br /> If the used sand is not hazardous based on the above analyses, it will be sent to a class II <br /> ` disposal site for disposal. <br /> Two soil samples will taken from under the areas from which used sand has been picked <br /> up. These will be taken from the top 2 inches of soil,near the stakes which were placed to <br /> mark the location of the used sand. The appropriate stakes will be marked #1 and #2, <br /> marking the location of the soil samples. These will be sent to the same laboratory as the <br /> used sand samples, under the same chain of custody, for TTLC analyses for copper, as <br /> outlined above. Should either sample result be above 25 mg/kg copper, the top 2 inches <br /> of soil from the appropriate area will be picked up and placed on a plastic sheet, for <br /> storage prior to disposal. The laboratory will be asked to provide an STLC analysis for <br /> copper for the same sample. If this is above 25 mg/kg, the removed soil will be <br /> ` transported to a hazardous waste disposal site, under manifest, for disposal, and sampling <br /> from the next 2 inches of soil will be repeated, as outlined above. This will be repeated <br /> until no further contamination is found. <br /> Should neither sample show evidence of contamination from copper, the stakes will be <br /> removed, and the soil deemed to be uncontaminated. <br /> ` 6.0 Report Preparation <br /> Cleanup will be deemed to be complete, when all used sand and contaminated soil have <br /> been disposed of appropriately. At this time, a Report of Cleanup, including findings of <br /> the investigation and all analytical results, will be prepared and forwarded to the <br /> r <br /> California Department of Toxic Substances Control. <br /> -4 - <br />