NEPA

Recently Completed NEPA Documents

Supplement Analysis of the 2005 Final Site-wide Environmental Impact Statement for Decontamination and Decommissioning (D&D) Projects Dec. 2019, 25 pages (2 MB pdf document)

U.S. Department of Energy Finding of No Significant Impact for the Proposed Action to Construct and Operate a Water Disinfection Facility at Lawrence Livermore National Laboratory May 2018, 2 pages (.5 MB pdf document)

FINAL Environmental Assessment for the Proposed Construction and Operation of a Water Disinfection Facility at Lawrence Livermore National Laboratory April 2018, 40 pages (9 MB pdf document)

Supplement Analysis of the Lawrence Livermore National Laboratory Final Site-wide Environmental Impact Statement for the Exascale Computing Facility Modernization (ECFM) Project 2017 29 pages (14 MB pdf document)

Final Environmental Assessment for the Proposed Increase in the Weight of Explosives Detonated at Lawrence Livermore National Laboratory Experimental Test Site, Site 300 2018 139 pages (5 MB pdf document)

U.S. Department of Energy Finding of No Significant Impact for the Proposed Action to increase the weight of explosives used at Lawrence Livermore National Laboratory, Site 300 2018 2 pages (pdf document)

List of Modeling Files 2018 1 pages (56 MB zip document)
Some of the files included in the package require Hotspots Analysis and Reporting Program (HARP), AERmod, or Combined Obscuration Model for Battlefield Induced Contaminants (COMBIC) software to open.

NEPA Categorical Exclusions

To further transparency and openness in its implementation of the National Environmental Policy Act (NEPA), the NNSA will document and post online all categorical exclusion (CX) determinations involving classes of actions listed in Appendix B to Subpart D of the DOE's NEPA regulations, 10 CFR Part 1021.