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EIS-0238-SA-05: Supplement Analysis

Continued Operation of Los Alamos National Laboratory: Proposed Horizontal Expansion of the Restricted Airspace up to 5,000 feet at Los Alamos National Laboratory

The DOE's National Nuclear Security Administration (NNSA) is not proposing to expand the horizontal dimensions of the existing 5,000-foot restricted airspace zone above LANL to include the southeast portion of TA-33 and the eastern portion of TA-54 in response to recent revised threat analyses. Operations at TA-33 and TA-54 would continue to be the same as those that are currently ongoing. Rather, security considerations have changed since the event of 9/11/01 and DOE has identified the need to expand LANL's 5,000-foot restriction to aircraft flights horizontally to include these two operational areas.