Attachment to letter dated 8/27/09 - Summary of Nuclear Criticality Safety Evaluation for Shielded Containers at the Waste Isolation Pilot Plant. See, Letter from DOE to EPA regarding a shielded container planned change request.

• Attachment 1 (from DOE letter dated 8/27/09) - Letter from DOE to EPA regarding a shielded container planned change request (PDF)(51 pp, 1 MB, August 27, 2009)