Linac Coherent Light Source-II

2 Documents in Project


SCH Number
Lead Agency
United States Department of Energy
Document Title
Linac Coherent Light Source-II
Document Type
EA - Environmental Assessment
Present Land Use
Project located on land owned by Stanford University and leased to DOE
Document Description
The proposed LCLS-II Project would consist of the construction, installation, operation and decommissioning of the following: 1) new tunnel for a hard X-ray undulator source (2-13 keV) and a soft X-ray undulator source (250-2,000 eV); 2) dedicated, independent electron source for these new undulators, utilizing Sectors 10-20 of the existing SLAC linac; 3) new experimental hall capable of accommodating multiple experimental stations; 4) modifications to existing SLAC facilities for the injector and new shielded enclosures for the undulator sources, beam dumps and X-ray front ends; 5) relocation of the two soft x-ray instruments from the existing Near Experimental Hall to the new experimental hall. The proposed LCLS-II Project will have sufficient capacity to allow for the installation of future undulator sources and experimental stations.

Contact Information

Dave Osugi
Agency Name
U.S. Department of Energy
Contact Types
Lead/Public Agency


Menlo Park
San Mateo
Cross Streets
I-280/Sand Hill Rd.
Parcel #
State Highways
5 Schools within 1 mile
San Francisquito Creek

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Department of Parks and Recreation, California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), Department of Toxic Substances Control, Department of Water Resources, Office of Historic Preservation, Resources Agency, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Transportation, District 4 (DOT)
State Reviewing Agency Comments
California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Transportation, District 4 (DOT)
Development Types
Other (Federal Research and Development Project)
Local Actions
Project Issues
Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Economics/Jobs, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Population/Housing, Solid Waste, Transportation, Vegetation

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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