Hanford defense waste disposal alternatives: engineering support data for the Hanford Defense Waste-Environmental Impact Statement

This document provides the engineering bases for the development of the Hanford Defense Waste-Environmental Impact Statement. In compliance with the National Environmental Policy Act process and, more specifically, the detailed scope prepared for the Hanford Defense Waste-Environmental Impact Statement, four waste disposal alternatives are identified: geologic disposal; in-place stabilization and disposal; continued storage (no disposal action); and the reference alternative. For each disposal alternative, the following six waste type classifications are addressed: existing tank waste, transuranic-contaminated soil sites (cribs and reverse wells), pre-1970 transuranic buried solid waste sites, retrievably stored and newly generated solid transuranic waste, strontium and cesium capsules, and future tank waste. The disposal alternatives are presented as options for the disposal of each waste type. Data regarding structures, site locations, and inventories for each waste class are provided, and are followed by a description of various technologies applied for implementing the disposal alternatives. Data associated with the resulting impacts (resources consumed, manpower used, emissions, and costs) are tabulated according to the waste class/alternative matrix. This information was used during the preparation of the Hanford Defense Waste-Environmental Impact Statement to develop socioeconomic analyses, accident scenarios, dose estimates, and waste release or migration evaluations