Conceptual Site Model - Argonne National Laboratory

WVDP Phase 1 CSAPAPPENDIX FWMA 6 PRE-REMEDIATION DATA COLLECTIONF.1 BackgroundWaste Management Area 6 (WMA 6) is approximately 14.5 acres in size and contains a varietyof facilities, including the Rail Spur, the Above-Ground Petroleum Storage Tank, the SewageTreatment Plant, the New Cooling Tower, the two Demineralizer Sludge Ponds, the EqualizationBasin, the Equalization Tank, the South Waste Tank Farm Test Tower, the Road-Salt and SandShed, and the LLW Rail Packaging and Staging Area (see Figures F.1 and F.2 for maps).Descriptions of the various features of WMA 6 follow, and are taken from the Phase 1 DP,Section 3.1.2.:Rail Spur. The rail spur runs about 8,000 feet from the south side of the Process Building towhere it connects to the main line of the railroad. The rails are cast iron and the ties are creosotepressure-treated wood. The Rail Spur will not be addressed by Phase 1 decommissioningactivities.Old Sewage Treatment Plant. The Old Sewage Treatment Plant was a small structure locatedapproximately 60 m south of the Process Building. It was connected to the Process Building by aburied sewage line. It discharged to an open ditch via an underground line approximately 70 m tothe southeast. It was replaced by the Sewage Treatment Plant, which used a completely differentset of supply and discharge lines than the Old Sewage Treatment Plant.Sewage Treatment Plant. The Sewage Treatment Plant is a wood frame structure 41 feet by 44feet by 15 feet high, with metal siding and roofing. The base of the facility is concrete andcrushed stone. The Sewage Treatment Plant is used to treat sanitary wastewater and contains sixin-ground concrete tanks, one above-ground polyethylene tank, and one above-ground stainlesssteel tank. The Sewage Treatment Plant will be removed during Phase 1 decommissioningactivities, along with its concrete foundation and the underground concrete tanks.Rev. 1 F-1