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. 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.
Oct. 4, 2019: DEQ calls PCC Structurals, Inc. Large Parts Campus (PCC-LPC) into the program
Jan. 2, 2020: PCC-LPC submits Emissions Inventory and supporting Emissions Estimates for DEQ review
March 17, 2020: DEQ requests additional information for Emissions
Inventory review
April 10, 2020: PCC-LPC submits an extension request for submittal of supporting information and revised Emissions Inventory
April 29, 2020: Maul Foster Alongi writes to DEQ during PCC-LPC's shutdown to confirm that PCC-LPC will clarify the extension request after the facility resumed production activities.
May 7, 2020: PCC-LPC submits a letter to DEQ clarifying their extension request.
June 3, 2020: DEQ responds to PCC-LPC's formal extension request
June 15, 2020: PCC-LPC submits supplemental information, including process flow and site diagrams.
Aug. 4, 2020: DEQ responds to PCC-LPC's submittal
Aug. 26, 2020: PCC-LPC submits an extension request for submittal of revised Emissions Inventory
Aug. 28, 2020: PCC-LPC submits supplemental information, including limited SDSs, stack test data, and limited production information
Sept. 1, 2020: DEQ response to PCC-LPC's extension request
Sept. 3, 2020: PCC submits updated process flow diagrams, site diagrams and revised Emissions Inventory.
Oct. 30, 2020: PCC submits revised calculations and additional supporting information.
Oct. 19, 2021: DEQ responds to PCC-LPC's revised submittals and supporting information.
Dec. 1, 2021: PCC submits extension request
Dec. 3, 2021: PCC submits Baghouse Testing Conceptual Plan
Dec. 14, 2021: DEQ approves extension request
Dec. 15, 2021: PCC submits redacted supplemental information
Dec. 22, 2021: PCC submits Baghouse Testing Matrix supporting Baghouse Testing Conceptual Plan
Jan. 14, 2022: PCC submits extension request for source testing
Jan. 28, 2022: DEQ approves source testing extension request
Feb. 11, 2022: DEQ responds to Baghouse Testing Conceptual Plan
Mar. 4, 2022: PCC submits revised Baghouse Testing Conceptual Plan
April 12, 2022: DEQ sent letter regarding revised reporting requirements for exempt TEUs
May 27, 2022: PCC provides information regarding exempt TEUs.
Jan. 18, 2023: DEQ sends letter regarding revised Baghouse Testing Conceptual Plan and provides requirements for Source Test Plan.
Jan. 27, 2023: PCC responds to Source Test Plan requirements and requests extension
Feb. 9, 2023: DEQ responds to PCCs extension request with conditions
April 27, 2023: PCC submits Source Test Plan
June 1, 2023: DEQ approves Source Test Plan