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### MAY 1 1 2009 AIR ND OFF I CE ATION David C. Moody, PhD Manager, Carlsbad Field Office U.S. Department of Energy P.O. Box 3090 Carlsbad, NM 88221 Dear Dr. Moody: The Environmental Protection Agency (EPA) has reviewed the information provided by the Department of Energy (DOE), Carlsbad Field Office (CBFO) in your January 28, 20091etter reporting the Tier 2 changes to the waste characterization activities conducted by the Central Characterization Project (CCP) at Idaho National Laboratory (INL), the Savannah River Site (SRS), the Argonne National Laboratory (ANL), the Los Alamos National Laboratory (LANL) as well as at the Hanford and Advanced Mixed WasteTreatment Project (AMWTP). DOE reported changes implemented to characterize contacthandled (CH) transuranic (TRU) waste for the three-month period beginning October 2008 through December 2008, as required by EPA's baseline approvals for these sites. EPA does not object to any of the changes reported in the enclosures to your letters. For some of the documents (See Enclosure) listed in your Tier 2 notification letter we would like you to provide the entire documents so that we can better understand the specific topic, and so that we stay better informed of the exact nature of the changes at the waste generator sites. This information will also assist us in planning future inspections. We request that CBFO provide the documents in electronic format, such as via the internet or on a compact disc and then notify EPA by e-mail when they are available. Please contact Rajani Joglekar (202-343-9462) or Ed Feltcorn (202-343-9422) if you have any questions. 

### Sincerely,



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~ Tom Peake, Director Center for Waste Management and Regulations

Internet Address (URL) • http://www.epa.gov Recycled/Recyclable • Printed with Vegetable Oil Based Inks on 100% Postconsumer, Process Chlorine Free Recycled PaperEnclosure

cc (Electronic Distribution): A. Harris, DOE HQ V. Daub, CBFO C. Gadbury, CBFO C. Fesmire, CBFO J.R. Stroble, CBFO N. Castaneda, CBFO A. Holland, CBFO M. Navarette, CBFO D. Miehls, CBFO A. Pangle, CTAC W. Ledford, CTACEnclosure

Tier 2 Changes Implemented at CH TRU Sites from October and December 2008

Advanced Mixed Waste Treatment Proiect We have reviewed the AMWTP reports listed below. We do not have any concerns at this time, however we may request additional references at a later date. Additional Questions for AMWTP None

Hanford We have reviewed the Hanford documents listed below. We do not have any concerns at this time, however we niay request additional references at a later date: Additional Questions for Hanford None CCP Activities for ANL, INL, LANL, ORNL and SRS In general, we have been able to obtain CCP documents from the CCP ftp site. However, we request a copy of the following documents: • Acceptable Knowledge (AK) summary report for CCP-AK-INL-001, Wastes retrieved from Designated Areas within the Subsurface Disposal Area at the Idaho National Laboratory Transuranic Waste Streams • AK accuracy report for waste stream OR-NFS-CH-HET, Lots 1-4 • AK summary reports for waste stream CCP-AK-ORNL-002, Oak Ridge National Laboratory Radiochemical Engineering Development Center Contact-handled Transuranic Waste, Waste .Stream: OR-REDC-CH-HET • AK summary reports for CCP-AK-LANL-012, Los Alamos National Laboratory TA-48 Alpha Facility and Waste Stream: LA-MHD08.001• AK summary report CCP-AK-SRS-3 for waste streams SR-W026-221 F-HET, SRW026-221 F-HOM and SR-W026-221 F-HEPA Additional Questions for ANL, INL, LANL, ORNL and SRS CCP Sites None