West Valley SEIS

About the SEIS for the West Valley Site

A guide to the Supplemental Environmental Impact Statement (SEIS) and the SEIS process, scope, and schedule

The SEIS for the West Valley Site will evaluate the potential environmental impacts associated with the completion of the decommissioning of the West Valley Demonstration Project (WVDP) and the decommissioning and/or long-term stewardship of the Western New York Nuclear Service Center (WNYNSC) and the State-Licensed Disposal Area (SDA).

This includes the decontamination and decommissioning of the facilities remaining at the West Valley Site after completion of Phase 1 decommissioning. The remaining facilities for Phase 2 include the Waste Tank Farm, U.S. Nuclear Regulatory Commission (NRC)-Licensed Disposal Area (NDA), SDA, non-source area of the North Plateau Groundwater Plume, Construction and Demolition Debris Landfill, Cesium Prong, balance of the WNYNSC property, and contaminated stream sediments.

The SEIS for the West Valley Site will evaluate several alternatives, including a No Action Alternative, Sitewide Close-in-Place, Sitewide Removal, and hybrid alternatives that could contain elements of any or all of the other alternatives. The U.S. Department of Energy (DOE) and New York State Energy Research and Development Authority (NYSERDA) plan to identify a preferred alternative in the Draft SEIS.

Explore this section to learn more about the SEIS, why it is needed, what’s in it, how the SEIS is being prepared and by whom, and the schedule for preparing the SEIS.


Why an SEIS? See Why is the SEIS Needed to learn more about why DOE and NYSERDA are preparing the SEIS.
What's in the SEIS? See What will be in the SEIS to learn more about the scope and content of the SEIS, including the impacts and issues addressed in the SEIS.
How will it be prepared? See How is the SEIS Being Prepared to learn more about the SEIS preparation process.
Who is Preparing it? See Who is Preparing the SEIS? for information on the organizations preparing the SEIS.
When will it be completed? See the Schedule for the SEIS.
Where is supporting documentation available? Documents are available for downloading and browsing on the Documents page of this website.
How can I get involved? DOE and NYSERDA encourage public participation in the SEIS. See Getting Involved to learn how you can participate in the process.