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Stimson Lumber Company

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 health standards.
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 DEQ’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 Cleaner Air Oregon website.

Air Toxics assessment process

process diagram

​July 2, 2020
Facility called in to CAO program.

Sept. 30, 2020
Facility submitted Emissions Inventory and supporting cover letter.

Jan. 28, 2021
DEQ responded to Emissions Inventory with request for additional information.
April 23, 2021
Facility submitted response to information request.
March 1, 2022
DEQ responded to the Emissions Inventory submittal with request for additional information.
April 18, 2022
Facility submitted revised Emissions Inventory. 

June 30, 2022
DEQ issues Warning Letter With Opportunity to Correct, requiring updates to the Emissions Inventory and additional documentation

July 29, 2022
Aug. 8, 2022
Aug. 15, 2022
Facility submitted revised Emissions Inventory (under DEQ review)

DEQ contact

Site address

49800 SW Scoggins Valley Rd,
Gaston, OR 97119

Current air permit 

Permit type: Title V 

Permit #34-2066