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This report evaluates the effects of enhanced sludge washing and sludge washing (without caustic leaching) during the preparation o f the Phase I high-level waste feeds.alternatives are evaluated against their ability to satisfy contractual, cost minimization, and other criteria. The information contained in this report is consistent with, and supplemental to, the Tank Waste Remediation System Operation and Utilization Plan (Kirkbride et al. 1997).The pretreatment processing 9-a -9 7 DateRelease Stamp e b s w Release Approval Approved for Public ReleaseA-6400-073 (01197) GEF321HNF-SD-TWR-AGA-003 Revision 0. . ALTERNATIVES GENERATION AND ANALYSIS FOR THE PRETREATMENT PROCESS SELECTION PHASE I HIGH-LEVEL WASTE ACKNOWLEDGMENTSThe author would like to thank the following personnel for their valuable assistance in completing this evaluation: John S. Garfield and Randy A. Kirkbride for their guidance and technical direction, Graham T. MacLean for performing the Environmental Simulation Program calculations, and Eric J. Slaathaug for performing the Hanford Tank Waste Operation Simulator runs to evaluate the effects of each alternative on tank farm operations.

The objective of this study is to determine the technical feasibility of processing transuranic tank waste in a high-level waste vitrification facility. This is achieved by performing an impact assessment of a reference case high-level waste facility modified to separately process transuranic waste. Data are presented for

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