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Hydro Extrusion Portland, Inc.

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 web page.

Air toxics assessment process

process diagram

​Oct. 15, 2020: Facility called in to CAO program.

Dec. 23, 2020: Facility submitted an extension for Emissions Inventory.

Jan. 8, 2021: Facility submitted supplemental information for extension request.

Jan. 13, 2021: DEQ approved extension request.

Feb. 12, 2021: Facility submitted Emissions Inventory.

May 21, 2021: DEQ requests revisions to the Emissions Inventory and source testing.

June 11, 2021: Facility submitted approach to revising the Emissions Inventory and requested extension to completed source testing.

June 21, 2021: DEQ approves approach to revising the Emissions Inventory and source testing extension request.

July 6, 2021: Facility submits revised Emissions Inventory

July 16, 2021: Facility submits source test plan

July 22, 2021: DEQ requests revisions to source test plan

July 28, 2021: Facility submits a revised source test plan


Thomas Rhodes

Site address

5325 NE Skyport Way
Portland, OR 97218