Conceptual Site Model - Argonne National Laboratory

WVDP Phase 1 CSAP1998, when it was replaced by the LLW2 Building. It was demolished down to its concrete floorslab at grade in October 2006.Test and Storage Building. The Test and Storage Building was located northeast of the ProcessBuilding. It was a timber frame and metal sided building, measuring 80 feet by 120 feet by 22feet high. It contained office spaces, a tool crib, and garage space. A concrete block additionhoused radiation and safety operations; it measured 18 feet by 26 feet by 12 feet high. The Testand Storage Building and its addition were demolished down to its concrete floor slab at grade inJune 2007.Maintenance Shop. The Maintenance Shop was located adjacent to the east end of the Test andStorage Building. It was a metal building with steel supports, measuring 60 feet by 100 feet by 28feet high. It housed locker rooms, lavatories, instrument shops, work areas, and a finished officearea. The Maintenance Shop was demolished down to its concrete floor slab at grade in June2007.Full Scale Permeable Treatment Wall. A full-scale permeable treatment wall was installed in2010 to address the further migration of the North Plateau Groundwater Plume. This zeolite-filledwall runs in a U-shape from the eastern end of the Lag storage buildings in WMA 5 to thenorthern end of Lagoon 3, and is tied to the underlying Lavery Till.Underground Pipelines. Approximately 50 underground wastewater pipelines totaling more than4,000 linear feet lie within WMA 2. Some of these pipelines run from the Process Building area(WMA 1) and the Waste Tank Farm (WMA 3) to the WMA 2 Neutralization Pit and Interceptors.They also connect the Interceptors to Lagoon 2; connect Lagoon 2 to the O2 Building and theLLW2 Building; connect these treatment facilities to Lagoons 4 and 5; connect Lagoons 2, 3, 4,and 5 to each other; and discharge treated wastewater from Lagoon 3 to Erdman Book throughthe permitted outfall. When Lagoon 1 was taken out of service in 1984, piping to Lagoon 1 fromthe New Interceptors was realigned to Lagoon 2.• The wastewater pipelines are Duriron pipes. They range from two to six inches in diameterand typically are buried eight to 12 feet below grade.Rev. 1 B-5