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• Sampling: The effectiveness of the cleanup operation will be monitored by taking wipe samples <br /> from all surfaces of the pit/sumps. A DHS-certified laboratory will analyze all samples taken <br /> during this removal action. The analytical wipe samples will be analyzed for PCB and metal <br /> concentrations, using the following EPA-approved methods (EPA, 1986): <br /> SW-846, Method 8080 for PCBs, and <br /> SW-846, Method 6010 for Metals. <br /> Contract laboratory procedure (CLP) analysis will be performed on the samples. The lab data will <br /> be stored so that complete CLP data packages can be subsequently assembled for designated review <br /> or independent validation. <br /> • Restoration: Following the clean up of the pit and sumps, an epoxy coating or lining will be <br /> provided on all surfaces to prevent future contamination of the concrete surfaces. <br /> 4.2 ABANDONMENT OF THE FACILITY <br /> This alternative involves the removal of the contents of the sumps and pit and abandonment of the <br /> facility after remediation. This removal action alternative will involve the first three steps described in Section <br /> 4.1, followed by the abandonment of the facility, as described below. <br /> Abandonment: The sump and pit will be backfilled with clean soil. The backfill will be compacted <br /> and a 6-inch-thick layer of concrete will be installed at the top, to prevent infiltration and match the existing <br /> floor level. <br /> 4.3 DEMOLITION OF THE FACILITY <br /> This alternative involves removal of the contents of the sumps/pit and demolition of the facility. This <br /> option will be used in the areas where the removal objective is not reuse of the facility and the contamination <br /> has seeped deep into the concrete walls, resulting in a technically difficult cleanup operation. This alternative is <br /> described in the following steps: <br /> • Removal and Disposal: Contents of the sump will be collected in 55-gallon drums and sent to a <br /> permitted off-site TSD facility for disposal. Contents from different sumps will be collected in <br /> separate containers and clearly labeled before their transportation. <br /> 14 <br />