Conceptual Site Model - Argonne National Laboratory

WVDP Phase 1 CSAP• If a portion of the WMA 12 North area is too wet to conduct a GWS, at most fivesystematic sampling locations will be selected per area to evaluate the presence ofcontamination above CG w requirements.• If sample results from 0-15 cm intervals are above background and there was not a 15cm-1 m sample collected for that location, a 15 cm-1 m sample will be collected andanalyzed.• If sample results for the 15 cm-1 m depth interval are above background, an additionalsample from that location representing the depth interval 1-2 m will be collected and thisprocess repeated until contamination is vertically bounded.• If a surface soil sample indicates contamination above CG w requirements and thatlocation is not bounded either by GWS data that indicate conditions are clearly belowCG w requirements or other surface soil sample locations that indicate activityconcentrations below CG w requirements, then additional surface soil sampling locationswill be selected to bound the contamination encountered.K.10 ReferencesDOE 2009. Phase I Decommissioning Plan for the West Valley Demonstration Project, Rev 2,prepared by Washington Safety Management Solutions, URS Washington Division,Science Applications International Corporation, prepared for DOE, December 2009.DOE 2010. Final Environmental Impact Statement for Decommissioning and/or Long-TermStewardship at the West Valley Demonstration Project and Western New York NuclearService Center, Vol 1, DOE/EIS-0226, January 2010.Rev. 1 K-10