Disposal of Activated Carbon from Chemical Agent Disposal Facilities (2009) / Chapter Skim
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, including characterization and pre-treatment requirements the facilities where these agents are being destroyed, • the foregoing context, assess the scientific support need in effluent gas streams pass through large activated carbon ed for obtaining regulatory approvals at CMA facilities. filters before venting to ensure that any residual trace vapors of chemical agents and other pollutants do not In response to this request, the NRC Board on Army escape into the atmosphere in exceedance of regulatory Science and Technology assembled the Committee to limits. All the carbon will have to be disposed of for Examine the Disposal of Activated Carbon from the final closure of these facilities to take place.
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of Carbon Exposed to Agent at Only three types of filter units are expected to ever CMA Incineration Sites During Operations and Closurea be exposed to agents under normal operating condi- MDB M-40 Mask tions: (1) those that filter the heating, ventilation, and Site ACS Laboratory HVAC Canistersb Other air conditioning (HVAC)
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SOURCE: Adapted from information provided to the committee by Timothy Garrett, Site Project Manager, ANDCF, as of September 29, 2008. TABLE S-3 Current Status of Permit Requirements for Shipping Carbon Off-site from Chemical Agent Disposal Facilities Facility Requirement of the Existing Permit Planned Modification Application ANCDF Carbon exposed to <1 STL may be shipped off-site.a HVAC carbon >WCL after extractive analysis to be shipped off-site in Carbon exposed to >1 STL must undergo extractive analysis prior accordance with bounding transportation risk assessment.
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GB at more than 20 ppb could be transported off-site Although all three chemical agents are strongly if the transportation risk assessment (TRA) approved adsorbed on coconut shell activated carbon, they all by state regulators and procedures was implemented react with the moisture that is also adsorbed on the to satisfy the bounding TRA values.
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TSDF, either by incineration or in a landfill. For all At the closure of the Aberdeen Chemical Agent unexposed carbon, shipment will be based on generator Disposal Facility (ABCDF)
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should be treated on-site in the metal parts furnace when the metal parts furnace is not performing its pri mary function of treating metal parts or other wastes. GENERAL FINDINGS AND RECOMMENDATIONS General Finding 1. About 80 percent of all the used General Finding 4. Nerve agents GB and VX and activated carbon that has been or will be generated at mustard agent have been shown to degrade on activated the chemical agent disposal facilities operating under carbon to their usual hydrolysis products by reacting the Chemical Materials Agency has never been exposed with the moisture adsorbed on the carbon.
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The methods must method detection limit for extractive analysis of VX on be capable of analyzing the agents on carbon that the Bank 1 carbon sample from the Anniston Chemical has been exposed to all three agents and that will Agent Disposal Facility, but it must still be validated. have both the agents and their respective degra- Neither Environmental Protection Agency Method dation products from hydrolysis adsorbed on the 3571 for HD nor modified Method 3571 for GB, which carbon.
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