Assessing Risk to Landfill Workers from Exposure to Incineration Waste Streams from the Umatilla Chemical Agent Disposal Facility. A. M. Cardenas, J. T. Wroble, and S. Oliver; Ecology & Environment, Inc., WA and Oregon State Department of Environmental Quality
The U.S. Department of the Army will be incinerating chemical agent-containing munitions at the Umatilla Chemical Agent Disposal Facility (UMCDF), in compliance with the Chemical Agent Stockpile Disposal Program enacted by Congress in 1985. During the incineration process, a variety of waste streams will be generated, including slag from the liquid incinerator, ash, brine tank sludge and salts, and other process and non-process wastes. These waste streams are to be sent to an off-site RCRA-permitted hazardous waste landfill. Prior to disposal, the waste streams must be tested to ensure that they are free of nerve agents, GB and VX, and blister agent, HD. At this time, an analytical method detection limit for GB only has been developed for use as a surrogate "agent-free" concentration. Therefore, the practical quantitation limit will be used as the level to determine if waste streams are "agent-free" and thus acceptable for off-site disposal. This risk assessment evaluated whether potential adverse effects to human receptors could occur if the UMCDF disposes of materials that are determined to be "agent-free." Quantitative analyses of the potential for adverse human health effects to landfill workers under both chronic and acute exposure conditions were performed. The results of the evaluation will support decisions concerning Oregon Department of Environmental Quality’s determination of safe off-site disposal of "agent-free" materials.
Work performed under DEQ Task Order No. 88-97-31.
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