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<br />Executive Summary <br /> <br />The Queen City Farms (QCF) Superfund site is located east of ...Rentonl <br />'{Ya~hingt()n in Maple Valley. The 320-acre property has two separate areas of <br />contamination; the old waste pond area in the eastern portion of the property, and the <br />former 4-Tek processing area in the center of the property. Both of these areas have <br />undergone remedial actions that have cleaned up the surface soils and have <br />established long-term groundwater monitoring for each area. The eastern portion, old <br />waste pond areal has had extensive cleanup actions consisting of removal of the waste <br />ponds containing the contaminated soil and sludge. The qroundwater and soil beneath <br />t d ond area has been contained with a' . I (slurry wall) and a <br />surface cap. This area IS now know as the on e groun water <br />impacts were also greater from the waste .ponds area and a larger groundwater <br />monitoring program currently is being implemented by the PRPs. The 4-Tek area had a <br />surface soil removal to prevent contact with contaminated soil. The remaining activities <br />consist of operation and maintenance (O&M) of the Containment Area and long-term <br />groundwater monitoring. <br /> <br />The construction of the Vertical Barrier W~lI and cap over the old waste pond <br />area was completed in ~ The Second Five-Year Review revealed that the O&M of <br />the cap/cover system is functioning well. The Vertical Barrier.Wall sufficiently controls <br />the residual contamination in the soil and groundwater from the source area that EPA <br />made the decision in 2001 not to invoke a ROD contingency that required additional <br />remedial actions to control the groundwater plume source. Monitoring done during the <br />last five years indicates that the performance of the Vertical Barrier Wall is still working <br />as designed. <br /> <br />O&M actions taken at the Site are expected to be sufficient to address the <br />normal activities that are occurring at the Site. Basically groundwater monitoring at both <br />areas is the ongoing activity at this time. <br /> <br />Queen City Farms <br />2nd 5- Year Review 9/03 <br /> <br />2 <br />