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. DEQ is currently finalizing a fact sheet specific to our Cleaner Air Oregon program. A facility-specific emissions inventory timeline and associated documents are linked below.
March 4, 2019: Facility called in to CAO program. (DEQ Notice Date)
May 31, 2019: CWM submits Emissions Inventory
Aug. 8, 2019: DEQ response letter to Emissions Inventory
Aug. 27, 2019: CWM response letter to DEQ with proposed submittal dates
Nov. 11, 2019: CWM submits source test plan
Dec. 6, 2019: CWM submits Emission Inventory Method
March 9, 2020: DEQ response to source test plan
April 30, 2020: CWM submits revised source test plan
May 27, 2020: DEQ request letter for additional information on EI
June 5, 2020: DEQ revised source test plan comment letter
June 26, 2020: CWM submits response letter on source test comments
July 10, 2020: DEQ approval letter (with changes) for source test plan
July 24, 2020: CWM submits response letter regarding approval letter
Oct. 1, 2020: CWM request letter for source test extension
Oct. 8, 2020: DEQ approves CWM extension request
Nov. 19, 2020: CWM submits source test report