The U.S. Department of Energy (DOE) EM-LA is proposing to install stormwater controls within the 100-yr floodplains of Effluent, Mortandad, North Ancho, and Potrillo Canyons within Los Alamos National Laboratory (LANL) near Los Alamos, New Mexico.
Office of NEPA Policy and Compliance
June 16, 2026
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The U.S. Department of Energy (DOE) EM-LA is proposing to install stormwater controls within the 100-yr floodplains of Effluent, Mortandad, North Ancho, and Potrillo Canyons within Los Alamos National Laboratory (LANL) near Los Alamos, New Mexico. These controls may include rock check dams, rock plunge pools, coir logs, erosion control blankets, straw wattles, compost logs and/or log check dams. They are designed to slow stormwater runoff and capture sediment from areas previously identified to have potential contamination from historical industrial activities at LANL.