Consortium for Risk Evaluation with Stakeholder Participation II

ATTACHMENT G.

Waste Form Definition

Conceptual Models and Approaches to Understanding Long Term Performance of  Cementitous Waste Forms
Presented by
David S. Kosson, Ph.D., Professor Vanderbilt University
Consortium for Risk Evaluation with Stakeholder Participation (CRESP)
To the Advisory Committee on Nuclear Waste
Nuclear Regulatory Commission

View

Conceptual Models and Approaches to Estimating Long-term Contaminant Release from Near Surface Disposal
of Cementitious and Other Waste Forms
Presented by
Andrew Garrabrants and David S. Kosson
Vanderbilt University & CRESP
To
Ines Triay(EM-3) and Mark Gilbertson (EM-20)
May 26, 2006

View

Sanchez, F., F.L. Parker, and J. H. Clarke. 2002. Evaluating requirements for stewardship of contaminant isolation facilities.
Waste Management 2002, Tucson, Arizona, February 24-28, 2002.

Cementitious Materials for Waste Treatment, Disposal, Remediation and Decommissioning Workshop, Savannah River National laboratory, December 12-14, 2006 View Agenda

Sanchez, F., and D.S. Kosson. 2005. Probabilistic approach for estimating the release of contaminants under field
management scenarios. Waste Management 25(5):463-472.

ABSTRACT: probabilistic approach is presented for estimating the release of contaminants by leaching, when wastes are being considered for disposal in a class of landfills but the specific landfill disposal site is uncertain. A simple percolation and equilibrium-based release model is used in conjunction with laboratory testing results and observations of field leachate characteristics for municipal solid waste landfills, hazardous waste landfills and industrial co-disposal landfills. The approach is applied for assessing the efficacy of potential treatment processes for mercury contaminated soils. For each landfill scenario, historical values of leachate pH and annual leachate generation quantities were used to derive the probability distribution functions of the field pH and LS ratio that may be expected to contact the disposed material over an estimated time period of 100 years. For each potential treatment process, laboratory testing was used to establish the treated material's leaching characteristics as a function of pH LS ratio. This approach allowed determination of distribution frequencies and limit values for release estimates instead of single point estimates. The probability of the mass of a constituent of interest released exceeding a hypothetical threshold was examined for each treatment process and landfill system. Results of the probabilistic analysis allowed for integration of a range of data and provided a good basis for assessing the efficacy of the examined treatment processes over the three assumed disposal scenarios.

FINAL REPORT: A Summary of Work 2000 - 2006

Instrument No. DE - FG26-00NT 40938 (Original Instrument No. DE-FG01-03EW15336)

Submitted by Charles W. Powers, PI CRESP II
Institute for Responsible Management
200 Centennial Avenue, Suite 200
Piscataway, NJ 08854
(732) 377-2010