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Title: EXAMPLE OF A RISK BASED DISPOSAL APPROVAL SOLIDIFICATION OF HANFORD SITE TRANSURANIC (TRU) WASTE

The Hanford Site requested, and the U.S. Environmental Protection Agency (EPA) Region 10 approved, a Toxic Substances Control Act of 1976 (TSCA) risk-based disposal approval (RBDA) for solidifying approximately four cubic meters of waste from a specific area of one of the K East Basin: the North Loadout Pit (NLOP). The NLOP waste is a highly radioactive sludge that contained polychlorinated biphenyls (PCBs) regulated under TSCA. The prescribed disposal method for liquid PCB waste under TSCA regulations is either thermal treatment or decontamination. Due to the radioactive nature of the waste, however, neither thermal treatment nor decontamination was a viable option. As a result, the proposed treatment consisted of solidifying the material to comply with waste acceptance criteria at the Waste Isolation Pilot Plant (WPP) in Carlsbad, New Mexico, or possibly the Environmental Restoration Disposal Facility at the Hanford Site, depending on the resulting transuranic (TRU) content of the stabilized waste. The RBDA evaluated environmental risks associated with potential airborne PCBs. In addition, the RBDA made use of waste management controls already in place at the treatment unit. The treatment unit, the T Plant Complex, is a Resource Conservation and Recovery Act of 1976 (RCRA)-permitted facility used for storing andmore » treating radioactive waste. The EPA found that the proposed activities did not pose an unreasonable risk to human health or the environment. Treatment took place from October 26,2005 to June 9,2006, and 332 208-liter (55-gallon) containers of solidified waste were produced. All treated drums assayed to date are TRU and will be disposed at WIPP.« less
Authors:
Publication Date:
OSTI Identifier:
920176
Report Number(s):
HNF-34876-RP Rev 0
TRN: US0807402
DOE Contract Number:
DE-AC06-96RL13200
Resource Type:
Conference
Resource Relation:
Conference: WASTE MANAGEMENT SYMPOSIA 2008 (WM08) 02/24/2008 THRU 02/28/2008 PHOENIX AZ
Research Org:
Hanford Site (HNF), Richland, WA
Sponsoring Org:
USDOE - Office of Environmental Management (EM)
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 29 ENERGY PLANNING, POLICY AND ECONOMY; NEW MEXICO; POLYCHLORINATED BIPHENYLS; RADIOACTIVE WASTES; RESOURCE CONSERVATION; SOLIDIFICATION; TOXIC SUBSTANCES CONTROL ACTS; US EPA; WASTE MANAGEMENT; WASTES