Los Alamos National Laboratory issued a Statement of Findings based on the Floodplain Assessment for the Los Alamos Mainline Make Piggable Pipeline Project.
Office of NEPA Policy and Compliance
October 5, 2026
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Statement of Findings for the Los Alamos Mainline Make Piggable Pipeline Project at Los Alamos National Laboratory, Los Alamos County, New Mexico
The National Nuclear Security Administration (NNSA), a semi-autonomous agency within the U.S. Department of Energy (DOE), issued a Statement of Findings for the install new pipe segments through excavation along a 12-inch Main Line (Los Alamos ML) natural gas pipeline within existing and new right-of-way (ROW) along New Mexico Highway 502 (NM 502). Two locations for proposed excavation and replacement of the line are within floodplain areas in Los Alamos Canyon and Pueblo with negligible direct and indirect impacts to the floodplains. The floodplain assessment and comment period were completed in accordance with 10 CFR 1022.
For more information, see the Floodplain Assessment for Los Alamos Mainline Make Piggable Pipeline Project at Los Alamos National Laboratory.