Process Equipment Management. In consideration of and based on the circumstances described below, the MPCA, and to the extent necessary, the County also plan to provide Andersen with flexibility regarding the management and disposal of wood-treatment process equipment that previously came into contact with pentachlorophenolic preservative, once Andersen elects to discontinue operation of the equipment. The specific details of this flexibility are included in Section II.E.2 of this FPA, and Xxxxxxxx’x alternative commitments related to this equipment are set forth in Section II.D. None of the flexibility described in this document involves federal waste requirements or policies. Andersen is allowed to manage any waste metal materials resulting from the decommissioning of the process equipment by recycling using a metal smelting operation provided the metal has met cleaning criteria set by the metal smelter. Groundwater beneath the process equipment is being remediated through a Superfund Consent Order with the State through a pump and treat system. The soils are being indirectly remediated through the groundwater pumpout system at the site, due to fluctuating groundwater levels at the site. The decommissioning of the process equipment will not invoke additional investigation and remediation requirements, unless soils are exposed through site reconstruction or development activities facilitating access to the dip tank and floodcoater reservoir areas. As part of obtaining this flexibility, Andersen will continue to seek opportunities to enhance its groundwater remediation system. By way of background, as part of Xxxxxxxx’x manufacturing process, cut and milled wood parts are treated using a solvent-based wood preservative formulation. Prior to March of 1986, a pentachlorophenolic preservative formulation was used in the west process diptank and former floodcoater, two of Xxxxxxxx’x xxxx-treating operations. Since that time, Andersen has only used non-pentachlorophenolic wood preservatives. The floodcoater was taken out of service in 1992. When taken out of service the tank liner was left in place, cleaned, filled with sand, and capped with concrete. As part of this FPA, Andersen has committed to a project goal of phasing out and discontinuing the use of its west process diptank. Phasing out of this tank means that the tank needs to be permanently decommissioned. Both the west diptank and the floodcoater reservoir tank have a steel liner encapsulated in concrete. The steel liner is epoxy c...
