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indicates that no significant threat to groundwater, surface water, or the environment exists. This <br /> conclusion is reinforced by the lack of elevated copper concentrations in soil samples collected <br /> from the face of the levee. <br /> 8.0 RECOMMENDATIONS <br /> ' We recommend no further investigation or remediation. We recommend that the excavated area <br /> be backfilled with imported roadbase material. Paving should be considered as a preventive <br /> measure to minimize the possibility of future impact to soil from site operations. <br /> ' 10 <br />