In October 2025, the DOE/NNSA Los Alamos Field Office revised the Mitigation Action Plan for LANL operations.
Office of NEPA Policy and Compliance
October 22, 2025
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Mitigation Action Plan for LANL Operations (October 2025)
A mitigation action plan (MAP) was prepared for the Site-Wide Environmental Impact Statement for Continued Operation of Los Alamos National Laboratory, Los Alamos, New Mexico (2008 SWEIS) in December 2008. The 2008 SWEIS MAP has been revised as needed to address significant changes, incorporate new mitigations identified in other National Environmental Policy Act (NEPA) documents, provide recommendations for ongoing mitigations, and close completed mitigations. The 2008 SWEIS MAP was previously revised in 2010, 2014, 2016, 2020, and 2021.
The 2025 MAP revision (Revision 6) captures several administrative changes, revisions to monitoring, inspection modifications, and updates mitigation status of the fiber-optic and photovoltaic array EAs. Because most remaining mitigations are from other NEPA documents issued for Los Alamos National Laboratory, the 2008 SWEIS MAP is being renamed the Mitigation Action Plan for Los Alamos National Laboratory Operations. Remaining mitigations included here were identified in the following other NEPA documents:
- Dual Axis Radiographic Hydrodynamic Test Facility Final Environmental Impact Statement (DOE/EIS-0228)
- Dual Axis Radiographic Hydrodynamic Test Facility Final Environmental Impact Statement Mitigation Action Plan
- Special Environmental Analysis for the DOE, NNSA, Actions Taken in Response to the Cerro Grande Fire at Los Alamos National Laboratory, Los Alamos, New Mexico (DOE/SEA-03)
- Environmental Assessment for Proposed Future Disposition of Certain Cerro Grande Fire Flood and Sediment Retention Structures at Los Alamos National Laboratory, Los Alamos, New Mexico (DOE/EA-1408)
- Expanded Operations of the Off-Site Sealed Source Recovery Project 'Amended Record of Decision: Site-Wide Environmental Impact Statement for the Continued Operation of Los Alamos National Laboratory, Los Alamos, New Mexico' (DOE/EIS-0380 Amended Record of Decision)
- Environmental Assessment for the Wildfire Hazard Reduction and Forest Health Improvement Program at Los Alamos National Laboratory, Los Alamos, New Mexico (DOE/EA-1329)
- Mitigation Action Plan for Chromium Plume Control Interim Measure and Plume-Center Characterization, Los Alamos National Laboratory, Los Alamos, New Mexico
- Final Environmental Assessment for Chromium Plume Control Interim Measure and Plume-Center Characterization, Los Alamos National Laboratory, Los Alamos, New Mexico (DOE/EA-2005)
- Final Supplemental Environmental Assessment for the Wildfire Hazard Reduction and Forest Health Improvement Program at Los Alamos National Laboratory, Los Alamos, New Mexico (DOE/EA-1329-S1)