The Oregon Department of Environmental Quality recognizes over 600 toxic air contaminants as regulated pollutants and may require facilities to report their emissions of these TACs for certain permitting actions or for the triennial Air Toxics Emissions Inventory report. Explanation of these reporting requirements, along with forms and tools are below.
Notice of Construction and Modification
Rule updates in November 2021 changed the definition of regulated pollutants [OAR 340-200-0020(133)] to include TACs under Division 210. This means that facilities must provide information on all TAC emissions for pollutants listed in OAR 340-247-8010(1) Table 1, that may result from a proposed change to facility operations.
Unpermitted and permitted facilities which are required to submit a Notice of Construction and Modification application, an ACDP Amend application, or a Title V Amend application may be required to report anticipated toxic emissions if the proposed construction will increase toxics emissions in any way. The application process is completed through Your DEQ Online and the toxics reporting is an Excel-based attachment that may be required prior to submission.
The information below is intended to clarify when to use the AQ104B Toxics reporting form and the tools are provided to facilitate common reporting scenarios.
Exceptions
Certain construction projects or changes do not require an AQ104B Toxics reporting attachment if any of the following apply:
- This is a Notice of Construction Type 1 submittal for specifically listed equipment under OAR 340-210-0225(1)(b).
- There is no increase in emissions of any Toxic Air Contaminants (TAC) associated with this application.
- This project proposes to only replace like-for-like equipment or processes without an increase in quantity and/ or a change in the composition of TAC emissions (e.g., the change does not emit more or new TACs than are currently emitted).
- This project proposes to only install equipment that solely combusts natural gas, propane, liquified petroleum gas, pretreated landfill gas and pretreated digester gas or biogas, and qualifies for the gas combustion exemption under OAR 340-245-0050(5).
- The project proposes to install pollution control device(s) that do not emit new TACs other than those covered by the gas combustion exemption under OAR 340-245-0050(5).
- This project proposes to install an emissions unit that satisfies the criteria for designation as an Exempt TEU under OAR 340-245-0060(3) and DEQ has approved this designation.
- The project is for an emergency generator less than 150 hp that operates for a maximum of 100 hours/year.
Air Toxics Emissions Inventory (ATEI) Report
The Air Toxics Emissions Inventory is a mandatory reporting event that occurs every three years. Most recently, reporting of 2023 emissions data was required of all permitted facilities holding a Title V or an ACDP Simple or Standard permit and was due July 1, 2024. The next triennial Air Toxics Emissions Inventory reporting event will occur in 2027 for the 2026 operating year. More information is available on the Air Toxics Reporting Background page.
Note that this periodic, state-wide Air Toxics Emissions Inventory is a separate reporting requirement from permit annual reporting and separate from an Emissions Inventory submitted as part of the Cleaner Air Oregon risk assessment process.
Sources in Lane County
Facilities located in Lane County should communicate directly with Lane Regional Air Protection Agency staff with questions regarding submitted reports.
Contacts
For questions about the 2023 Air Toxics Emissions Inventory reporting, contact
Clara Funk or
David Broderick.
For all other permitting questions, contact your regional DEQ permitting office.
For LRAPA facilities, please contact LRAPA directly at 541-736-1056.