Conceptual Site Model - Argonne National Laboratory

WVDP Phase 1 CSAP10. Verify Contamination Status of Soils To Be Affected by Phase 1 Construction Needs. Thecurrent contamination status of soils that will be affected by on-site construction activitiesneeds to be determined. Data collection is required to establish the contamination statusof surface soils in areas to be used to support Phase 1 decommissioning activities prior tothe initiation of those activities. An example is the area where the new Canister InterimStorage Facility will be constructed. The purpose of this data collection is to determinecontamination status and support corrective action decision-making that might bedesirable prior to facility construction/soil reworking.11. Establish Site-Specific Performance for On-Site and Field-Based Analytical Methods.The site-specific performance of field-screening and field-deployable analytical methodshas not been established for the WVDP premises. The Phase 1 decommissioning processfor the WVDP will be a lengthy and expensive program. Field-screening and fielddeployableanalytical methods (e.g., trailer-based) have the potential for streamliningcharacterization, remediation, waste disposal, and FSS activities. Examples of these arescanning methods (and associated detection limits) for Cs-137, and on-site analyticalmethods for Cs-137 and Sr-90. CSAP activities will provide an opportunity todemonstrate and optimize performance of field-screening and on-site analytical methodsfor the benefit of future WVDP work. Data are required that can be used forcharacterization of technology performance and long-term deployment.12. Develop an Inventory of Buried Infrastructure. The WVDP premises are assumed to havea significant amount of buried infrastructure associated with the various WVDP buildingsand their historical activities. This infrastructure is important from the perspective ofidentifying the potential for subsurface contamination and for designing andimplementing safe characterization and remediation activities. The current understandingof buried infrastructure (location, footprint, original purpose, and contamination status) isincomplete. Data collection is required to develop, as practicable, a completeunderstanding of the location and footprint of buried infrastructure across the WVDPpremises.13. Determine Groundwater Flow Data Necessary for WMA 1 and WMA 2 Barrier WallDesigns. The design of the barrier walls for WMA 1 and 2 will require area-specificRev. 1 6