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NEXT Renewable Fuels, LLC

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 in the risk assessment process.

  • Each step of the CAO risk assessment process has a section that includes DEQ's communications and deliverables with the facility.
  • The color-coded graphic below shows where a facility is in the Cleaner Air Oregon process.
  • For additional information and history of the program, visit the Cleaner Air Oregon web page

process diagram 

​​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. 

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. 

Nov. 30, 2021: DEQ approves Emissions Inventory

​A Modeling Protocol outlines parameters used in the dispersion modeling portion of the health risk assessment. This document identifies sensitive receptors at which risk will be assessed and outlines modeling parameters to be used in the facility's dispersion modeling. 

Nov. 9, 2021: NEXT submits Exposure Location Change Request

Nov. 30, 2021: NEXT submits combined Modeling Protocol and Risk Assessment Work Plan 
​A Risk Assessment Report shows the results of the health risk assessment following the approved emissions inventory, modeling protocol and risk assessment work plan. 

Oct. 22, 2021: NEXT submits Risk Assessment Report

Dec. 14, 2021: DEQ approves Risk Assessment

About the Facility

NEXT Renewable Fuels, LLC. is proposing to construct a renewable diesel, renewable naphtha and renewable jet fuel manufacturing facility at the Port of Columbia County's Port Westward Industrial Park in Clatskanie. For additional information on this facility, please visit DEQ's NEXT Renewable Fuels project page.  


Kenzie Billings 
Project Manager

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