This is a 30-day extension of the public comment period for the Draft Site-Wide Environmental Impact Statement for Continued Operation of Los Alamos National Laboratory, led by the National Nuclear Security Administration (NNSA) in New Mexico. The original comment period closed March 11, 2025; it has been extended to April 10, 2025. The notice is purely procedural. Substantive content, alternatives analysis, and impact findings are in the underlying Draft EIS, not in this Federal Register notice.12