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Hollingsworth and Vose

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 

Air toxics assessment process 

inventory 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. 

Jan. 10, 2022: Facility called in to CAO program.

April 11, 2022: Facility submitted emissions inventory and supporting information.

June 8, 2022: DEQ responded to the Emissions Inventory submittal with a request for revisions and additional information. 

June 21, 2022: Facility submitted Emissions Inventory extension request.
July 1, 2022: DEQ responded to the Emissions Inventory request.

July 8, 2022: Facility submitted revised Emissions Inventory and supporting information.

​Sept. 22, 2022: DEQ responded to the Emissions Inventory submittal with a request for revisions and source testing. 

Oct. 24, 2022: Facility submitted revised Emissions Inventory and supporting information. 
Nov. 13, 2022: Facility submitted a source test plan.
Nov. 23, 2022: DEQ approved the source test plan.

About the Facility

Hollingsworth & Vose manufactures specialty glass fiber products from sand and other materials using electric furnaces and other equipment that result in glass melting and shaping of the glass into long, very thin fibers. Glass fiber produced at this facility is a raw material used in air and liquid filtration media and specialty battery separator media. H&V acquired the site in 1996 from Evanite Fiber Corporation. Learn more about air quality permitting for Hollingsworth and Vose.

DEQ contact

1551 Crystal Lake Drive, Corvallis, OR 97333 

Current Air Permit 

Standard ACDP, 02-2173-ST-01

Current Air Permit

Current Review Report