P.O. Box 2528, Idaho Falls, Idaho 83403-2528Telephone: (208) 533-7106

May 7, 1999

Dr. Chris Murphy

National Research Council 2101 Constitution Avenue Washington, DC 20418

Dear Chris:

As we discussed at the January 1999 Electrometallurgical review meeting, over the last two years Argonne's interactions with the Department of Energy (DOE) programs associated with the geological repository and waste form qualification have increased in order to better ensure that the high-level waste (HLW) generated from the electrometallurgical treatment (EMT) of sodium-bonded fuels are acceptable for disposal. These interactions have generally fallen into three categories: Yucca Mountain Repository Environmental Impact Statement, National Spent Nuclear Fuel Program, and Electrometallurgical Specific Meetings.

The first series of interactions (Attachment 1) concerns the preparation of the Yucca Mountain Repository Environmental Impact Statement (EIS). After discussions with the National Spent Nuclear Fuel Program (NSNFP), Idaho National Engineering and Environmental Laboratory (INEEL) and DOE Environmental Management personnel, the electrometallurgical wastes were included as high level waste streams. Argonne participated in the data call and review of this document. The formal data submittals for the EMT waste forms from treating 60 MTHM of sodium-bonded fuel were done through the INEEL HLW office and DOE-EM. The EMT waste streams are included in Appendix A of the Yucca Mountain Repository EIS.

Argonne also participates in regular meetings with personnel of the National Spent Nuclear Fuel Program and the INEEL Spent Nuclear Fuel Program. The purpose of the NSNFP is to determine the activities necessary to best integrate DOE-owned spent nuclear fuel into the repository. Issues addressed include disposal requirements, data needs, interfaces for standardized canisters, material shipments, and quality assurance programs. The INEEL Spent Nuclear Fuel Program is responsible for the activities for the specific DOE fuels that are stored at the Idaho Nuclear Technology and Environmental Center (INTEC). INTEC currently has 2.0 MT of Experimental Breeder Reactor-II (EBR-II) fuel stored and is the proposed location of the final packaging for

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