NSSI is a fully-permitted RCRA Part B hazardous waste TSDF and one of only three facilities in the United States providing storage and treatment of mixed hazardous/radioactive wastes.  The facility receives waste from generators in all states and from foreign sources and is permitted to accept all radionuclide including special nuclear material and a full spectrum of EPA waste codes.  NSSI has been licensed to possess and use radioactive materials and process radioactive waste since 1971 and obtained its final part B permit for hazardous, non-hazardous, and mixed wastes on October 4, 1990.  NSSI is permitted to receive and manage hazardous waste, non-hazardous wastes, radioactive wastes, and mixed wastes under the regulatory authority of the Texas Commission for Environmental Quality (TCEQ).

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