Hollingsworth and Vose

​​​​The Emissions Inventory provides information on all the Toxic Air Contaminant emissions from a facility, and includes information on a facility’s operations and activities, as well as fuel and material usage rates. This is often the longest step in the CAO risk assessment process as DEQ needs to verify that all activities have been accounted for, and that the most representative emissions data available are used. In some cases, DEQ will require a facility to perform source testing at this stage if insufficient data is available to estimate emissions. ​

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.

• Call in letter​
  

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

• Emissions Inventory Cover Letter​
  

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

• DEQ Response letter​​

​The Modeling Protocol provides information on how the facility plans to accurately model the concentrations of Toxic Air Contaminants (TACs) that community members may be exposed to based on the TAC emissions data from the approved Emissions Inventory. A Risk Assessment Work Plan is required for more complex Risk Assessments (Level 3 or Level 4) and provides more detailed information about locations where people live or normally congregate around the facility and how risk to these community members will be evaluated.

July 13, 2023: Facility submitted a Modeling Protocol 

• Modeling Protocol 
  
• Crosswalk of Receptors​​​