OAR 340-245-0040
Emissions Inventory

(1) Individual emissions inventory for risk assessment. For the purpose of assessing risk, DEQ may require the owner or operator of any permitted or unpermitted source to submit an emissions inventory of all toxic air contaminants emitted by the source listed in OAR 340-245-8020 (Table 2 - Toxic Air Contaminant Reporting List) Table 2. The owner or operator must assess risk from the toxic air contaminants in OAR 340-245-8040 (Table 4 - Risk-Based Concentrations) Table 4 and must address uncertainty in a Level 3 or Level 4 Risk Assessment for the toxic air contaminants in OAR 340-245-8020 (Table 2 - Toxic Air Contaminant Reporting List) Table 2 that do not have RBCs. The owner or operator must submit the emissions inventory electronically to DEQ no later than 90 days after the DEQ notice date unless DEQ allows additional time under OAR 340-245-0030 (Submittal and Payment Deadlines).
(2) Periodic state-wide emissions inventory.
(a) Once every three years, DEQ may require the owners and operators of all permitted and unpermitted sources to submit an updated toxic air contaminant emissions inventory of all toxic air contaminants emitted by the source listed in OAR 340-245-8020 (Table 2 - Toxic Air Contaminant Reporting List) Table 2. The reporting year will generally correspond with EPA’s National Emission Inventory reporting year (2020, 2023, 2026, etc.);
(b) The owner or operator must submit its updated emissions inventory electronically to DEQ no later than 60 days after the date that DEQ sends a written request by electronic mail or regular U.S. mail, to the owner or operator, unless DEQ allows additional time under OAR 340-245-0030 (Submittal and Payment Deadlines); and
(c) DEQ may also require the owner or operator of a source that has previously submitted a toxic air contaminant emissions inventory to submit an updated emissions inventory if DEQ discovers or learns additional information that indicates that the source’s emissions have changed since it completed its most recent emissions inventory.
(3) Emissions inventory requirements.
(a) When required to submit an emissions inventory, the owner or operator must submit:
(A) A list of TEUs that emit toxic air contaminants. The owner or operator must include exempt TEUs but does not have to calculate toxic air contaminant emissions from the exempt TEUs. The list of TEUs that emit toxic air contaminants should not be limited to what is listed in a source’s operating permit but should include all operations at the source that emit toxic air contaminants;
(B) A list of production, fuel and material usage rates that are used to calculate toxic air contaminant emissions for each TEU for the following:
(i) For any emissions inventory, the actual production or usage in the calendar year preceding the year DEQ’s written request is made, or for new or reconstructed sources, the reasonably anticipated actual production or usage;
(ii) For an emissions inventory required under section (1), potential production or usage based on the following:
(I) Annual production and usage that are used to calculate the Source Risk Limit if the owner or operator chooses to be permitted based on a requested PTE or risk limit; or
(II) Potential production or usage based on capacity that is used to prove the source is de minimis if the owner or operator chooses to be permitted as a de minimis source;
(iii) For an emissions inventory required under section (1), potential production or usage for the projected maximum day. The owner or operator must use knowledge of process to calculate the maximum daily production and process rates;
(C) Material balance information using Safety Data Sheets (formerly Material Safety Data Sheets) and Technical Data Sheets, as applicable, for VOC-containing materials used in any process; and
(D) Operating schedule (hours/day, days/year, seasonal variability) for the source, including schedules for each TEU, if different, for the calendar year preceding the year DEQ’s written request is made and the year based on a requested PTE or risk limit;
(b) Owners or operators of sources with Title V, Standard and Simple Air Contaminant Discharge Permits, and unpermitted sources when DEQ so requires, must also submit:
(A) A list of all toxic air contaminants emitted by the source; and
(B) The amount of each toxic air contaminant emitted from each TEU, reported as maximum mass emitted per 24 hour period for each toxic air contaminant that has an acute RBC, and as mass emitted per year for each toxic air contaminant that has an annual RBC or has no RBC, with the emission factors used or material balance information, as appropriate, for the following:
(i) For any emissions inventory, actual emissions for the calendar year preceding the year DEQ’s written request is made, or for new or reconstructed sources, emissions based on the reasonably anticipated actual production or usage; and
(ii) For an emissions inventory required under section (1), emissions based on the following, and including startup and shutdown emissions for sources required to do so under OAR 340-214-0310 (Excess Emissions and Emergency Provision: Planned Startup and Shutdown):
(I) Requested PTE or risk limit used to calculate the Source Risk Limit if the owner or operator chooses to be permitted based on a requested PTE or risk limit; or
(II) Capacity that is used to prove the source is de minimis if the owner or operator chooses to be permitted as a de minimis source;
(iii) For an emissions inventory required under section (1), maximum daily production. The owner or operator must use knowledge of process to calculate the maximum daily emissions;
(C) The name of each resource used to obtain toxic air contaminant emission factors or methodologies used to calculate emissions (e.g., AP-42 or WebFIRE, California Air Toxic Emission Factors, source test data, continuous monitoring data, etc.).
(4) Review of toxic air contaminant emissions inventory reports. DEQ shall use the procedures in OAR 340-245-0030 (Submittal and Payment Deadlines) to review any emissions inventory in determining its completeness, consider extensions requests, and request additional information, if needed.

Source: Rule 340-245-0040 — Emissions Inventory, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-245-0040.

340‑245‑0005
Purpose and Overview 340‑245‑0010
Applicability and Jurisdiction 340‑245‑0020
Definitions 340‑245‑0022
Abbreviations and Acronyms 340‑245‑0030
Submittal and Payment Deadlines 340‑245‑0040
Emissions Inventory 340‑245‑0050
Risk Assessment Procedures 340‑245‑0060
Toxic Emissions Units 340‑245‑0100
Toxic Air Contaminant Permit Addenda 340‑245‑0110
Source Risk Limits 340‑245‑0120
Community Engagement 340‑245‑0130
Risk Reduction Plan Requirements 340‑245‑0140
Pollution Prevention 340‑245‑0150
Postponement of Risk Reduction 340‑245‑0200
Risk Estimates 340‑245‑0210
Modeling and Risk Assessment Work Plan Requirements 340‑245‑0220
TBACT and TLAER Procedures 340‑245‑0230
Toxic Air Contaminant Monitoring Requirements 340‑245‑0300
Toxicity Reference Values 340‑245‑0310
Process for Updating Lists of Regulated Toxic Air Contaminants and Their Risk-Based Concentrations 340‑245‑0320
Standards and Criteria for Noncancer Risk Action Levels for Existing Contamination Sources 340‑245‑0400
Cleaner Air Oregon Fees 340‑245‑8010
Table 1 - Risk Action Levels 340‑245‑8020
Table 2 - Toxic Air Contaminant Reporting List 340‑245‑8030
Table 3 - Toxicity Reference Values 340‑245‑8040
Table 4 - Risk-Based Concentrations 340‑245‑8050
Table 5 - Level 1 Risk Assessment Tool Dispersion Factors 340‑245‑9000
Colored Art Glass Manufacturing Facility Rules 340‑245‑9010
Colored Art Glass Manufacturing Facility Rules 340‑245‑9015
Colored Art Glass Manufacturing Facility Rules 340‑245‑9020
Colored Art Glass Manufacturing Facility Rules 340‑245‑9030
Colored Art Glass Manufacturing Facility Rules 340‑245‑9050
Colored Art Glass Manufacturing Facility Rules 340‑245‑9060
Colored Art Glass Manufacturing Facility Rules 340‑245‑9070
Colored Art Glass Manufacturing Facility Rules 340‑245‑9080
Colored Art Glass Manufacturing Facility Rules
Last Updated

Jun. 8, 2021

Rule 340-245-0040’s source at or​.us