March 5, 2026

Supplemental Environmental Impact Statement

Office of NEPA Policy and Compliance
March 5, 2026

Environmental Impact Statement

Office of NEPA Policy and Compliance
March 5, 2026

Environmental Impact Statement

Office of NEPA Policy and Compliance
March 5, 2026

Supplemental Environmental Impact Statement

Office of NEPA Policy and Compliance
March 5, 2026

Environmental Impact Statement

Office of NEPA Policy and Compliance
March 5, 2026

Environmental Impact Statement

Office of NEPA Policy and Compliance
March 5, 2026

NNSA announced its intent to prepare a supplemental site-wide EIS to update the analysis in the 1999 site-wide EIS; now superseded by EIS-0380.

Office of NEPA Policy and Compliance
March 5, 2026

Environmental Impact Statement

Office of NEPA Policy and Compliance