Oregon Administrative Code

340-222-0048 Baseline Period and Baseline Emission Rate (1) The baseline period used to calculate the baseline emission rate is either: (a) For any regulated pollutant other than greenhouse gases and PM2.5, any consecutive 12 calendar month period during the calendar years 1977 o…

340-222-0051 Actual Emissions (1) A source’s actual emissions as of the baseline period are the sum total of the actual emissions from each part of the source for each regulated pollutant. The actual emissions as of the baseline period will be determined to be: (a) Except as prov…

340-222-0055 Unassigned Emissions (1) Purpose. The purpose of unassigned emissions is to track and manage the difference in the quantity of emissions between the netting basis and what the source could emit based on the facility's current physical and operational design. (2) Esta…

340-222-0060 Plant Site Emission Limits for Sources of Hazardous Air Pollutants (1) DEQ may establish PSELs for hazardous air pollutants (HAPs) if an owner or operator requests that DEQ create an enforceable PTE limit. (2) PSELs will be set only for individual or combined HAPs an…

340-222-0080 Plant Site Emission Limit Compliance (1) The permittee must monitor regulated pollutant emissions or other parameters that are sufficient to produce the records necessary for demonstrating compliance with the PSEL. (2) The frequency of the monitoring and associated a…

340-222-0090 Combining and Splitting Sources and Changing Primary SIC Code (1) Two or more sources may combine into one source if the criteria in subsection (a) are met. When two or more sources combine into one source under this rule, the combined source is subject to the criter…

340-223-0010 Purpose OAR 340-223-0020 through 340-223-0130 establish the process and criteria for identifying reductions of pollutants from stationary sources that reduce visibility and contribute to regional haze in Class I areas, for the purpose of maintaining reasonable progre…

340-223-0020 Definitions The definitions in OAR 340-200-0020 and this rule apply to this division. If the same term is defined in this rule and OAR 340-200-0020, the definition in this rule takes precedence. (1) "Emissions unit" means any part or activity of a source that emits o…

340-223-0100 Screening Methodology for Sources for Round II of Regional Haze (1) The following sources are subject to the requirements of round II of regional haze, contained in OAR 340-223-0110 to OAR 340-223-0130: (a) Stationary sources with a Title V operating permit; and (b) …

340-223-0110 Options for Compliance with Round II of Regional Haze (1) All sources subject to the requirements of round II of regional haze, as determined in OAR 340-223-0100(1), must submit a four factor analysis as required under OAR 340-223-0120(1) and install all controls det…

340-223-0120 Four Factor Analysis (1) A four factor analysis is an emissions control analysis that shall include: (a) All emissions units for the source; and (b) Information sufficient to determine, at each emissions unit: (A) The costs of any and all controls that could be used …

340-223-0130 Final Orders Ordering Compliance with Round II of Regional Haze (1) For all sources identified in OAR 340-223-0100(1) that do not enter into a stipulated agreement and final order under OAR 340-223-0110(2), DEQ shall issue a final order no later than August 9, 2021, …

340-224-0010 Applicability, General Prohibitions, General Requirements and Jurisdiction (1) Except as provided in subsection (c), the owner or operator of a source undertaking one of the following actions must comply with the applicable Major New Source Review requirements of OAR…

340-224-0020 Definitions The definitions in OAR 340-200-0020, 340-204-0010 and this rule apply to this division. If the same term is defined in this rule and 340-200-0020 or 340-204-0010, the definition in this rule applies to this division. NOTE: This rule is included in the Sta…

340-224-0025 Major Modification (1) Except as provided in sections (3) and (4), "major modification" means a change at a source described in section (2) for any regulated pollutant subject to NSR since the later of: (a) The baseline period for all regulated pollutants except PM2.…

340-224-0030 New Source Review Procedural Requirements (1) Information Required. The owner or operator of a source subject to Major NSR or State NSR must submit an application and all information DEQ needs to perform any analysis or make any determination required under this divi…

340-224-0034 Exemptions Temporary emission sources that would be in operation at a site for less than two years, such as pilot plants and portable facilities, and emissions resulting from the construction phase of a source subject to Major NSR or Type A State NSR must comply with…

340-224-0038 Fugitive and Secondary Emissions For sources subject to Major NSR or Type A State NSR, fugitive emissions are included in the calculation of emission rates of all air contaminants. Fugitive emissions are subject to the same control requirements and analyses required …

340-224-0040 Review of Sources Subject to Major NSR or Type A State NSR for Compliance With Regulations The owner or operator of a source subject to Major NSR or Type A State NSR must demonstrate the ability of the source to comply with all applicable air quality requirements of …

340-224-0045 Requirements for Sources in Sustainment Areas Within a designated sustainment area, a source subject to Major NSR must meet the requirements listed below for each sustainment pollutant: (1) OAR 340-224-0070; and (2) Net Air Quality Benefit: Satisfy OAR 340-224-0510 a…

340-224-0050 Requirements for Sources in Nonattainment Areas Within a designated nonattainment area, and when referred to this rule by other rules in this division, a source subject to Major NSR must meet the requirements listed below for each nonattainment pollutant: (1) Lowest …

340-224-0055 Requirements for Sources in Reattainment Areas Within a designated reattainment area, a source subject to Major NSR must meet the requirements listed below for each reattainment pollutant: (1) OAR 340-224-0050, treating the reattainment pollutant as a nonattainment p…

340-224-0060 Requirements for Sources in Maintenance Areas Within a designated maintenance area, a source subject to Major NSR must meet the requirements listed below for each maintenance pollutant: (1) OAR 340-224-0070; and (2) Net Air Quality Benefit: Except for sources describ…

340-224-0070 Prevention of Significant Deterioration Requirements for Sources in Attainment or Unclassified Areas Within a designated attainment or unclassified area, and when referred to this rule by other rules in this division, a source that is subject to Major NSR for any reg…

340-224-0245 State New Source Review: Requirements for Sources in Sustainment Areas Within a designated sustainment area, a source subject to State NSR must meet the following requirements for each sustainment pollutant: (1) Air Quality Protection: The owner or operator must comp…

340-224-0250 State New Source Review: Requirements for Sources in Nonattainment Areas Within a designated nonattainment area, a source subject to State NSR must meet the following requirements for each nonattainment pollutant: (1) If the increase in emissions is the result of a m…

340-224-0255 State New Source Review: Requirements for Sources in Reattainment Areas Within a designated reattainment area, a source subject to State NSR must comply with the requirements in OAR 340-224-0260 for each reattainment pollutant treating the reattainment pollutant as a…

340-224-0260 State New Source Review: Requirements for Sources in Maintenance Areas Within a designated maintenance area, a source subject to State NSR must meet the following requirements for each maintenance pollutant: (1) If the increase in emissions is the result of a major m…

340-224-0270 State New Source Review: Requirement for Sources in Attainment and Unclassified Areas Within a designated attainment or unclassified area, a source subject to State NSR must meet the following requirements for each attainment pollutant: (1) Air Quality Protection: (a…

340-224-0500 Net Air Quality Benefit Emission Offsets: Net Air Quality Benefit for Sources Locating Within or Impacting Designated Areas OAR 340-224-0510 through 340-224-0540 are the requirements for demonstrating net air quality benefit using offsets. NOTE: This rule is included…

340-224-0510 Net Air Quality Benefit Emission Offsets: Common Offset Requirements The purpose of these rules is to demonstrate reasonable further progress toward achieving or maintaining the ambient air quality standards for sources locating within or impacting designated areas. …

340-224-0520 Net Air Quality Benefit Emission Offsets: Requirements for Demonstrating Net Air Quality Benefit for Ozone Areas When directed by the Major or State NSR rules, OAR 340-222-0042, or OAR 340-226-0400, the owner or operator must comply with this rule. (1) Offsets for VO…

340-224-0530 Net Air Quality Benefit Emission Offsets: Requirements for Demonstrating Net Air Quality Benefit for Non-Ozone Areas (1) When directed by the Major or State NSR rules, OAR 340-222-0042, or OAR 340-226-0400, the owner or operator of the source must comply with section…

340-224-0540 Net Air Quality Benefit Emission Offsets: Sources in a Designated Area Impacting Other Designated Areas (1) When directed by the Major and State NSR rules, the owner or operator of a source locating outside, but impacting any designated area other than an attainment …

340-225-0010 Purpose and Jurisdiction (1) This division contains the definitions and requirements for air quality analysis. This division does not apply unless a rule in another division refers to this division or a rule in this division. For example, division 224, New Source Rev…

340-225-0020 Definitions The definitions in OAR 340-200-0020, 340-204-0010 and this rule apply to this division. If the same term is defined in this rule and 340-200-0020 or 340-204-0010, the definition in this rule applies to this division. (1) "Allowable emissions" means the em…

340-225-0030 Procedural Requirements When required to conduct an air quality analysis under this division: (1) The owner or operator of a source must submit a modeling protocol to DEQ and have it approved before submitting a permit application. (2) In addition to the requirements…

340-225-0040 Air Quality Models All modeled estimates of ambient concentrations required under this division must be based on the applicable air quality models, data bases, and other requirements specified in 40 CFR part 51, Appendix W, "Guidelines on Air Quality Models (Revised)…

340-225-0045 Requirements for Analysis in Maintenance Areas Modeling: For determining compliance with the maintenance area impact levels established in OAR 340-202-0225, the following methods must be used: (1) For each maintenance pollutant, a single source impact analysis is suf…

340-225-0050 Requirements for Analysis in PSD Class II and Class III Areas Modeling: For determining compliance with the AAQS, PSD increments, and other requirements in PSD Class II and Class III areas, the following methods must be used: (1) For each regulated pollutant, a singl…

340-225-0060 Requirements for Demonstrating Compliance with Standards and Increments in PSD Class I Areas For determining compliance with AAQS and PSD increments in PSD Class I areas, the following methods must be used: (1) Before Jan. 1, 2003, the owner or operator of a source m…

340-225-0070 Requirements for Demonstrating Compliance with Air Quality Related Values Protection (1) Sources that are not federal major sources are exempt from the requirements of this rule. (2) When directed by OAR chapter 340, division 224, the requirements of this rule apply …

340-226-0005 Applicability and Jurisdiction (1) This division applies in all areas of the state. (2) Subject to the requirements in this division and OAR 340-200-0010(3), LRAPA is designated by the EQC to implement the rules in this division within its area of jurisdiction. NOTE:…

340-226-0010 Definitions The definitions in OAR 340-200-0020, 340-204-0010 and this rule apply to this division. If the same term is defined in this rule and 340-200-0020 or 340-204-0010, the definition in this rule applies to this division. (1) "Refuse" means unwanted matter. (2…

340-226-0100 Highest and Best Practicable Treatment and Control: Policy and Application (1) As specified in OAR 340-226-0110 through 340-226-0140 and sections (2) and (3), DEQ will include appropriate conditions in permits to ensure that the highest and best practicable treatment…

340-226-0110 Highest and Best Practicable Treatment and Control: Pollution Prevention The owner or operator of a source is encouraged to take into account the overall impact of the control methods selected, considering risks to all environmental media and risks from all affected …

340-226-0120 Highest and Best Practicable Treatment and Control: Operating and Maintenance Requirements (1) Operational, Maintenance and Work Practice Requirements: (a) Where DEQ has determined that specific operational, maintenance, or work practice requirements are appropriate …

340-226-0130 Highest and Best Practicable Treatment and Control: Typically Achievable Control Technology (TACT) TACT determinations will be based on information known to DEQ while considering pollution prevention, impacts on other environmental media, energy impacts, capital and …

340-226-0140 Highest and Best Practicable Treatment and Control: Additional Control Requirements for Stationary Sources of Air Contaminants In addition to other applicable requirements, DEQ may establish control requirements by permit if necessary as specified in sections (1) thr…

340-226-0210 Grain Loading Standards: Particulate Emission Limitations for Sources Other Than Fuel Burning Equipment, Refuse Burning Equipment and Fugitive Emissions (1) This rule does not apply to the following: (a) Fugitive emissions sources; (b) Fuel burning equipment; (c) Ref…