Seneca Sustainable Energy, LLC (SSE)
Air Toxics Health Risk Assessment Status
Cleaner Air Oregon is a health-based permitting program that regulates emissions of toxic air contaminants from facilities based on risk to nearby communities. CAO requires facilities to report toxic air contaminant emissions, assess potential health risks to people nearby and reduce toxic air contaminant risk if it exceeds legal limits.
As part of the Cleaner Air Oregon process, each facility has a dedicated web page to provide communities access to facility information and updates on where it is involved in the process.
- Each step of the CAO risk assessment process has a section that includes LRAPA's communications and deliverables from the facility.
- A color-coded graphic shows where a facility is in the Cleaner Air Oregon Process.
- For additional information and history of the program, visit the DEQ Cleaner Air Oregon website.
Air Toxics assessment status for Seneca Sustainable Energy, LLC (SSE)
|Air Toxics assessment process||Legend: Risk Assessment Process|
Air Toxics assessment process
- Facility Information
- Facility Map
- Emissions Inventory
- Modeling Protocol & Risk Assessment
- Risk Assessment Report
- Risk Reduction Plan
- CAO Process Completed
About the Facility – Seneca Sustainable Energy, LLC (SSE)
Seneca Sustainable Energy LLC operates a wood-fired electrical cogeneration power plant located at 29650 East Enid Road, Eugene, Oregon. The facility began operations in January 2011. The nameplate capacity of the turbine is 19.778 megawatts. The wood-fired boiler has a maximum heat input capacity of 352.8 MMBtu per hour and has a steam output of 200,000 pounds per hour. Learn more about LRAPA's regulation of Seneca Sustainable Energy by viewing their current air permit below.
29650 East Enid Road,
Eugene, Oregon, 97402
|Current Cleaner Air Oregon Step|
Risk Assessment Report
|Current Air Permit|
Permit Type: Title V
Source Number: 206470
Current Air Permit
Review Report and Emission Details
541-736-1056, ext. 236
For an introduction to emissions inventories and why they matter, please see EPA’s Fact Sheet. A facility-specific emissions inventory timeline and associated documents are linked below.
December 2, 2019: LRAPA calls Seneca Sustainable Energy into the program
- LRAPA's call in letter to Seneca Sustainable Energy.
February 27, 2020: Seneca Sustainable Energy submits Emissions Inventory and Categorically Insignificant Activities Form for LRAPA review
- Cover letter for emissions inventory submittal.
- Emissions Inventory: An Emissions Inventory is a list of each toxic air contaminant regulated under the Cleaner Air Oregon rules that a facility emits in a given year. The Emissions Inventory includes the amount of each toxic air contaminant emitted from each individual emissions-producing activity.
- Categorically Insignificant Activities (Form ED601): Categorically Insignificant Activities are activities that are likely to have insignificant emissions that are not part of a facility’s primary production process. Categorically Insignificant Activities are defined in LRAPA Title 12.
June 15, 2020: LRAPA approves the Emissions Inventory submitted by Seneca Sustainable Energy
Modeling Protocol & Risk Assessment
|A map of residential, child, acute, and worker exposure assignments used in the Modeling Protocol can be viewed by clicking here.|
July 8, 2020: Seneca Sustainable Energy provides initial Level 3 modeling protocol and risk assessment workplan.
- Seneca Sustainable Energy's modeling protocol and risk assessment workplan.
- Seneca Sustainable Energy's target organ analysis.
September 24, 2020: LRAPA approves the modeling protocol and risk assessment workplan.
- LRAPA's modeling protocol and risk assessment workplan approval letter.
- Seneca Sustainable Energy's cover letter for the revised modeling protocol and risk assessment workplan.
- Seneca Sustainable Energy's revised modeling protocol and risk assessment workplan.
- Seneca Sustainable Energy's revised target organ analysis.
Risk Assessment Report
January 3, 2021: Seneca Sustainable Energy submitted an initial Level 3 Risk Assessment report to LRAPA for review.
- Seneca Sustainable Energy’s initial Level 3 Risk Assessment report (2020-12-28 SSE Risk Assessment document).
- Seneca Sustainable Energy’s supporting spreadsheet for the initial Level 3 Risk Assessment report (CAO_SEN_2020_12_28 document).
April 1, 2021: Seneca Sustainable Energy submitted a final Level 3 Risk Assessment report incorporating changes requested by LRAPA.
- Seneca Sustainable Energy’s final Level 3 Risk Assessment report (2021-03-31 Final SSE Risk Assessment)
- Seneca Sustainable Energy’s supporting spreadsheet for the final Level 3 Risk Assessment report (CAO_SEN_2021_03_29)
September 8th, 2021: LRAPA hosted a virtual community meeting sharing the preliminary Risk Assessment and providing avenues for feedback.
- Presentation materials from the 9/8/2021 meeting (SSE_Community_Meeting_Slides).
- Meeting summary and notes from the 9/2/2021 meeting (SSE_Community_Meeting_Summary).
- A recording of the meeting is at the bottom of this webpage.
September 28th, 2021: LRAPA approves SSE's Risk Assessment.
- LRAPA's approval letter of SSE's risk assessment. (SSE CAO Risk Assessment Approval Letter)
Risk Reduction Plan
Seneca Sustainable Energy, LLC (SSE) has yet to submit for this step of the Cleaner Air Oregon process. If necessary, this field will be updated once the facility reaches the Risk Reduction portion of CAO.
Completed Cleaner Air Oregon Process
Seneca Sustainable Energy, LLC (SSE) has yet to submit for this step of the Cleaner Air Oregon process. This field will be updated once the facility reaches the Risk Assessment portion of CAO.
September 8th, 2021 community meeting.
The intent of this public meeting was to share information curated during the CAO process, to describe the risk assessment, hear community concerns, and answer questions. As well as provide opportunity for community members to provide meaningful feedback by reviewing and the locations of exposure category types.