SWMU 76 - Mixed Waste Landfill - Corrective Action

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The Department of Energy/National Nuclear Security Administration (DOE) and Sandia Corporation (Sandia) have submitted a request for a Class 3 Modification to Module IV of Hazardous Waste Permit NM5890110518-1 (the Permit). DOE and Sandia are requesting that the New Mexico Environment Department (NMED) designate solid waste management unit (SWMU) 76 as approved for Corrective Action Complete status. NMED made a preliminary determination in October 2014 that corrective action is complete at this SWMU. SWMU 76, known as the Mixed Waste Landfill (MWL), is a 2.6-acre site at Sandia National Laboratories, located on Kirtland Air Force Base immediately southeast of Albuquerque, New Mexico. Radioactive wastes and mixed wastes (radioactive wastes that are also hazardous wastes) were disposed of in the MWL from March 1959 through December 1988. The maximum depth of burial is approximately 25 feet below the ground surface. Groundwater occurs approximately 500 feet below the ground surface at the MWL. DOE and Sandia have implemented corrective measures at SWMU 76 in accordance with the requirements of the Permit; an April 2004 Compliance Order on Consent between NMED, DOE, and Sandia; and the plans approved by NMED. On January 8, 2014, NMED approved a long-term monitoring and maintenance plan (LTMMP) for SWMU 76. DOE and Sandia have implemented the approved LTMMP, maintaining the controls established through the corrective measures. Information about SWMU 76 will be presented in poster format at a meeting on Tuesday, November 18, 2014, 4:00 – 8:00 p.m. at Manzano Mesa Multigenerational Center, located at 501 Elizabeth SE in Albuquerque. Posters will be available for review, and personnel from SNL will be available to answer questions during the entire meeting. Attendees will also be able to make written comments during the meeting. All written comments submitted during the meeting will be forwarded to the NMED. The posters and handouts that will be available at the meeting consist of 11 documents that are grouped according to topic. 11 documents consisting of posters and handouts

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Sandia National Laboratories


Public Meeting, Corrective Action Complete, LTMMP, Long-Term Monitoring and Maintenance, SWMU, Solid Waste Management Units, AOC, Area of Concern, Class 3 Permit Modification