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EMISSIONS INVENTORY
GENERAL INSTRUCTIONS

Instructions for DEQ Form #100-730

Revised 2/28/2018

 
CONTENTS

I. GENERAL REPORTING GUIDANCE

A. Inventory Reporting Requirements

The Air Quality Division (AQD) of the Oklahoma Department of Environmental Quality (DEQ) requests emission inventories and supporting documentation required by the federal Clean Air Act, in conjunction with Sections 2-5-105(9) and 2-5-112.B.11 of the Oklahoma Clean Air Act, Oklahoma Statutes Title 27A, and OAC 252:100-5 (Subchapter 5).

Subchapter 5 requires potential sources of air contaminants to register with the AQD, file an emissions inventory, and pay annual operating fees. The owners or operators of permit exempt facilities or de minimis facilities, as these terms are defined in OAC 252:100-7-1.1, are not required to submit an annual emission inventory.

All facilities that have a permit must submit an emissions inventory.
Only when a permit is formally rescinded by DEQ is the requirement to submit an inventory removed.

B. Report Regulated Pollutants Only

Report the amount of actual emissions of all regulated air pollutants, including quantifiable emissions from startups, shutdowns, and malfunctions (SSMs) or excess emissions. The following questions should be asked in the order shown to determine the correct reporting category for an emission. A pollutant should be reported if a pollutant question is answered with a ‘yes'.

Is the emission...

  • (1) A Hazardous Air Pollutant (HAP) or any other type of federally regulated pollutant (e.g., dioxins/furans)?
    These are the specific compounds and compound groups defined in the federal Clean Air Act and associated regulations. All currently regulated State Toxic Air Contaminants except ammonia are also HAPs. All HAPs must be reported individually and added to the total VOC emission amounts.
  • (2) Ammonia (NH3)?
  • (3) One of four totally reduced sulfur compounds: hydrogen sulfide, methyl mercaptan, dimethyl sulfide, or dimethyl disulfide?
  • (4) Sulfuric acid?
  • (5) A pollutant not listed in Appendix P of OAC 252:100 but for which emissions are limited in the Specific Conditions of a current permit?
    For more information see: www.deq.state.ok.us/AQDnew/emissions/ReportingPollutantsLimitedByPermitOnly.htm
  • (6) A criteria pollutant (CO, NOx, SOx, PM, lead) or a Volatile Organic Compound (VOC)?

If the emission does not fall into any of the above categories,
the emission is not a regulated pollutant and should not be reported.

C. Inventory Submission Tools

Emission inventories may be submitted using Redbud, the preferred method of reporting, or by completing DEQ Form 100-730 hard copy Turn-Around Documents (TADs).

  • (1) Redbud
    The online reporting application can be accessed here. A Redbud help document is available to provide guidance in using the Redbud tool. Video training modules provide sequential instructions on how to access the system, complete the forms, report new equipment and pollutants, and submit your emission data.
  • (2) Hard Copy Forms
    First time hard copy reporters
    The TAD contains a cover sheet with general facility information, followed by one or more pages for each emission unit, and finally a plant summary page used for certification. Each emission unit needs one emission unit page and will require additional pollutant pages if there are emissions of more than two pollutants. Blank TAD forms are available here.
    Hard copy reporters
    After receiving your TAD either by email or mail, review the accuracy of all pre-populated fields and strike through or update incorrect data and make corrections as needed on paper forms. All data fields must be reported if applicable or else indicated as not applicable to the facility or operations. There are no optional data fields.

D. Inventory Due Date

All content, necessary information, and requested data must be submitted on or before April 1. Upon receiving a written demonstration of good cause, the director of the AQD may grant an extension for submittal beyond the April 1 deadline.

E. Permit By Rule Reporting Schedule

The owner or operator of a facility newly registered under a permit by rule (PBR), as in OAC 252:100-7-9, shall submit an initial emissions inventory. After the initial emission inventory submittal, PBR facilities will be required to submit an annual emission inventory on the following schedule:

  • (1) Every National Emission Inventory (NEI) Three-Year Cycle Inventory Year
    For PBR facilities with actual emissions greater than 5 tons per year of any regulated air pollutant, an emission inventory is required for every NEI Three-Year Cycle Inventory year (defined in 40 CFR Section 51.30(b)).
  • (2) Every second NEI Three-year Cycle Inventory Year
    For PBR facilities with actual emissions of 5 tons or less of any regulated air pollutant, an emission inventory is required for every second NEI Three-Year Cycle Inventory year (defined in 40 CFR Section 51.30(b)) beginning with the 2020 NEI reporting year.

F. Deleting Records

A company can make a deletion request by completing DEQ Form 100-730(B) in Redbud or emailing the Emission Inventory Section with a request.

  • (1) Pollutants
    If an individual pollutant at a process is lower than 0.1 tons (or lower than 0.001 tons if considered a key exception) under normal, annual operations, a company may request that this pollutant be removed from the inventory. It should be noted that when a facility has a situation where a pollutant is sometimes at a reportable level, it may be advantageous for a company to keep the pollutant in the inventory so it is available in the years that it needs to be reported.
  • (2) Processes
    If each pollutant at a process is lower than 0.1 tons (or lower than 0.001 tons if considered a key exception) under normal, annual operations, a company may request that this process (and emission unit and release point if only one process) be removed from the inventory.
  • (3) Emission Units
    When no longer reporting an emission unit a company should leave a facility note in Redbud stating the reason the emission unit will no longer be reported. This is important when the AQD is cross-referencing the inventory to a list of known sources at a facility.

Use these instructions to complete an annual inventory
for each permitted facility owned or operated

II. COMPANY INFORMATION

A. Company Name

The name of the legal entity or company that currently owns or operates the facility.

B. Facility Name

A unique facility name, facility location, or facility designation. The facility is the location where activities resulting in air emissions occur or have occurred.

C. Company Mailing Address

The business address to which mail is delivered, which can be distinct from the company's physical address.

D. Responsible Official (RO)

The name, phone, fax, and email address of the individual responsible for the company. A Responsible Official is defined in OAC 252:100-1-3. To change an RO, complete DEQ Form 100-882 (.pdf) with signature, and then email, fax, or mail the completed form to the address listed on the form.

E. Change in Ownership or Company/Facility Name

The owner or operator of any facility that is required to submit an emissions inventory shall notify DEQ in writing no later than 30 days following any transfer of ownership using DEQ Form 100-883 (.pdf).

III. FACILITY INFORMATION

A. Facility Physical Address

The physical address of the facility. A PO Box or rural delivery route number is unacceptable.

B. Facility Status

The operational status of the facility (selections listed below) during the reporting year. A company can change a facility's operating status, but by doing so the company is certifying the accuracy of the new status. Per OAC 252:100-7.1.1, annual emissions inventories do not need to be submitted for permit exempt or de minimis facilities. If a facility should be updated to permit exempt or de minimis in our records, please notify our office in writing (email, fax, or letter). In these cases, an inventory may be required for the part of the year in which the facility held a permit, prior to the exempt or de minimis classification.

  • (1) Not yet built
    Select this status only if the facility was under construction and did not begin operating within the year.
  • (2) Active
    Select this status if the facility operated at any time during the reporting year.
  • (3) Idle
    Select this status if the facility was idle or did not operate for the entire year. All emission units must have a status of temporarily or permanently shut down if this facility status is selected. No activity should be reported.
  • (4) Closed
    Select this status only if the facility has been permanently shut down and will no longer operate. Please note that if the facility operated at any time during the relevant emissions inventory reporting (calendar) year, its status may not be changed to closed until the following year. A pop-up message will appear in Redbud confirming your closed status selection.
  • (5) PBR-Schedule B (2020)
    Select this status only if the facility was permitted as a PBR facility the entire calendar year being reported and emissions quantities satisfy the six year reporting schedule.

C. NAICS

The North American Industry Classification System. Enter the primary NAICS for overall facility operations. See http://www.census.gov/epcd/www/naics.html for valid NAICS values and conversion tables from NAICS to SIC and from SIC to NAICS.

D. SIC

The Standard Industrial Classification code for the facility. This can be determined at http://www.osha.gov/pls/imis/sicsearch.html.

E. TRI FID

The unique ID that is assigned to the facility in the U.S. Environmental Protection Agency (EPA) Toxic Release Inventory (TRI) data system. Contact our office if you believe the incorrect TRI ID is linked to your facility.

F. Facility Permits

All of the active permits issued for this facility.

G. Memo from DEQ/Memo from Facility

Use this memo field to explain entries or to address other issues in the inventory, where more information might be necessary. Also, please review any new notes from DEQ.

H. Facility Location

  • (1) County
    This box should contain the county where the facility is located.
  • (2) Legal Description
    The subsection, section, township, and range of the facility.
  • (3) Geographic coordinates
    These are the current geographic coordinates listed for your facility in our database. Contact our office if there is an error.

I. Main Facility Contact (MFC)

The name, phone, fax, and email address of the main contact for the facility. This will be our first point of contact should we have any questions regarding the facility's inventory.

To change an MFC, submit the new contact information (name, title, email, mailing address, and telephone number) to aei@deq.ok.gov.

IV. EMISSION UNIT INFORMATION

A. Sequence Number

A number assigned by the AQD for each particular emission unit so that companies can easily reference an emission unit at a facility. When reporting new emission units via hard copy, use the next available sequence number. In Redbud the sequence number will increment automatically when a new emission unit is added.

B. Emission Unit Name

The current name of the emission unit. Every emission unit must have an emission release point, at least one process, and if active, one or more pollutants (when equal or greater than the reporting threshold), which may also include control equipment information.

C. Notes from ODEQ/Notes from facility

Use this area to address issues relating to this emission unit and its associated emission release points, processes, and emissions. Examples include describing a drastic change in emissions from the previous year, emissions calculations using formulas, grouped emission units, etc.

D. Emission Unit Type

A description that uniquely identifies the emission unit chosen from the Unit Type table. Examples include but are not limited to boilers, engines, tanks, spray booths, fugitive sources, and crushers.

E. Emission Unit Status

The operational status of the emission unit.

  • (1) Operating
    This emission unit operated all or part of the calendar year. Facility status must be active.
  • (2) Temporarily Shutdown
    This emission unit did not operate at all during the calendar year but may restart at some time in the future (no emissions during the calendar year).
  • (3) Permanently Shutdown
    Select this status if an emission unit has been removed or is permanently shut down (no emissions during the calendar year). The unit will be dropped from your inventory the following year.

F. Location of the Emission Unit

Enter valid GPS data only during initial creation of emission units. This information cannot change for existing emission units in Redbud.

  • (1) Latitude
    State in decimal degrees, not in degrees, minutes, seconds.
  • (2) Longitude
    Must be a negative number (to indicate west of the Greenwich Meridian). State in decimal degrees, not in degrees, minutes, seconds.

G. Additional Emission Unit Guidance

  • (1) Grouping Emission Units
    Small sources that individually do not have reportable emissions, but collectively have emissions over the reporting threshold, should be reported. They can be grouped into one source. For example, all of the small sources at one process unit or building could be submitted together. Emergency generators can often be grouped in an inventory. Guidance to report grouped emission units is as follows:
    • The emission unit name should include the number of units being grouped.
    • The release point should be reported as a fugitive with the total area of all the units and the average height.
    • Process rates, including maximum hourly and typical daily, should be reported as an average.
    • Operating periods, including the actual hours per year, should be reported as an average.
    • Design capacity should be reported as an average.
    • Actual emissions should be the sum of emissions calculated based on the actual process rate or actual hours per year of the individual units, not the averaged values.
    • An emission unit note should be added to further clarify the number of units being grouped and the individual design capacities (if a combustion process).
  • (2) New Facility and Collocated Facility Equipment
    Create a new emission unit for all new equipment, including like-for-like engine swaps. Emission units from a collocated facility are not transferred to the new facility, therefore new emission units should be created. This allows a historical record of equipment.

V. EMISSION RELEASE POINT INFORMATION

A. Stack/Emission Release Point Name

Describes the area from which emissions are released into the environment via a stack or fugitive release. A release point can define the area over which fugitive emissions occur. Names should be similar to the emission unit name for easy recognition. When a facility has multiple emission units that go to a common release point, the release point for each emission unit should be the same name with the word "common" in it.

B. Stack/Emission Release Point Type

A description that uniquely identifies the release point: Fugitive, Vertical, Horizontal, Goose Neck, Vertical with Rain Cap, or Downward-Facing Vent.

C. Stack/Emission Release Point Status

The operational status of the stack/emission release point. If an emission unit is reported as temporarily shut down, the release point status should match the current emission unit status. It is possible for an emission unit, with multiple stacks, to be operational and some of the stacks reported as shut down.

  • (1) Operating
    This stack/emission release point operated all or part of the calendar year.
  • (2) Temporarily Shutdown
    This stack/emission release point did not operate at all during the calendar year but may restart at some time in the future.
  • (3) Permanently Shutdown
    Select this status if a stack/emission release point has been removed or is permanently shut down. The stack will be dropped from your inventory the following year.

D. Release Point Parameters

  • (1) Stack Parameters (Do not apply to Fugitive Emission Release Points)
     
    Height
    Height above grade of the stack in feet. The grade is defined as the level at which the ground surface meets the base of a stack or the base of a structure that emits fugitives. In the latter case, this could be the ground level at the base of a storage tank or the base of a storage pile of minerals.
    Diameter
    Diameter of the stack in feet. For non-round stacks, the diameter equals the square root of the length times width multiplied by 1.128 as stated in the following equation:
    `"Diameter"=1.128xxsqrt("length"xx"width")`
    Temperature
    The temperature of the exit gas stream in degrees Fahrenheit.
    Gas Exit Velocity
    The exit velocity of the exhaust stream in feet per second (fps). To convert the flow rate to gas exit velocity divide the flow rate (ACFM) by `pir^2` (where `r=0.5xx"diameter"`) and by 60 seconds per minute as shown in the following equation:
    `"Gas Exit Velocity (fps)"="Flow Rate (ACFM)" -: (pixxr^2xx60)`
    Both the gas exit velocity and flow rate can be provided, but only one is required.
    Flow
    The numeric value of stack gas flow rate in actual cubic feet per minute (ACFM). This information is collected for air pollution modeling purposes and therefore the maximum flow rate is needed. In the case of a batch process, it would be the highest rate, usually at the start of the batch, rather than a time average.
     
    ACFM is based on actual conditions of the gas and is the measurement rate to use when reporting flow rate. A standard cubic feet per minute (SCFM) vs. actual cubic feet per minute guidance document is available here.
  • (2) Fugitive Parameters (Do not apply to Stack Emission Release Points)
     
    Fugitive Area
    The area over which fugitive emissions are released, in square feet. In the case of a storage tank, this would be the area of the tank vent or surface area of a stockpile. However, for facility-wide fugitives at a large plant, this would be the area of the entire facility. When reporting stack dimensions using Turn-Around Document (TAD) forms, the horizontal area of fugitive emissions should be zero (0).
    Fugitive Height
    Height above grade in feet of emission release point for emissions not routed through a stack (some tanks, stock piles, etc.). If there is no identifiable stack, provide the height in feet above ground at which the emissions enter the atmosphere. This may also be appropriate for stacks with a minimal flow rate (e.g., tank vents). For leaks from pipework or loading operations, the fugitive height is typically three (3) feet. When reporting stack dimensions using TAD forms, the fugitive height should be zero (0).

VI. EMISSION PROCESS INFORMATION

A. Process Description

A description of each process or activity at a particular emission unit (this description is assigned by the Source Classification Code). A single emission unit may have two or more processes (and so Source Classification Codes) if more than one material is used. For example, a single boiler will have two SCCs if it burns both fuel oil and natural gas.

B. Source Classification Code (SCC)

The EPA SCC for the process. The SCC describes an emissions process or activity. It is important to stay within a specific industry group. For assistance in selecting an appropriate SCC, access EPA's SCC searchable database: https://ofmpub.epa.gov/sccsearch/

There are certain facility operations that may be represented more accurately by the creation of multiple emissions processes at one emission unit. Examples include:

  • There are three processes involved when considering total VOC emissions from hydrocarbon storage tanks: working, breathing and flashing losses. Normally, each of these processes will be entered separately, with their own different SCCs. If the combined emissions are less than 6 TPY, the working, breathing, and flashing losses may be grouped into an all-inclusive code of 40400311 for condensate, 40400312 for crude oil, or 40400315 for produced water. For more information about flashing losses from hydrocarbon storage tanks, please see Permitting's guidance document (.pdf).
  • When two different fuels at an emission unit (e.g., a boiler that can burn both natural gas and oil) are used, emissions must be reported separately for each process. In this case, there would be two different processes for this emission unit, with potentially different pollutants and emission factors and amounts.

C. Confidential Business Information

Indication of confidentiality of process information. Emissions data that may be held as confidential is certain information, which if made public, would divulge methods or processes entitled to protection as trade secrets. Companies with confidential data must submit their company emission inventory by hard copy (TAD forms) and will not be able to utilize Redbud. Confidential information must be severable and "CONFIDENTIAL" should be marked on every applicable page. A "PUBLIC" copy of the report should also be provided with all of the confidential information removed. The Department shall hold and keep as confidential any information declared by the provider to be a trade secret and may only release such information upon authorization by the person providing such information.

D. Process Material

The substance from which the pollutants were created by each process. Depending on the type of source category, material may refer to the type of fuel combusted, raw material processed, product manufactured, or material handled. A table of the material descriptions to be used can be found here. If you can't find the exact material, select another material that best fits your process or contact the Emission Inventory Section for assistance.

E. Material Input/Output

  • (1) Used (Input)
    Example: "Natural gas is used to run an engine."
  • (2) Produced (Output)
    Example: "Ammonia is produced at a fertilizer plant."
  • (3) Existed
    Example: "Crude oil is stored within a storage tank."

F. Process Rates

The hourly, daily, and annual process or activity rate measured by the process rate units, which are typically defined by the process SCC.

  • (1) Maximum Hourly
    The maximum hourly rate at which the process unit can operate. This figure is used in modeling studies.
  • (2) Typical Daily
    The rate that characterizes how, on a representative day, a particular process unit operated during the reporting year. The daily rate of operation is the typical rate for days when the emission unit is in operation.
  • (3) Actual Annual
    The actual annual process rate.

The rate is a measurable factor or parameter that relates directly or indirectly to the emissions of an air pollution source. Activity information is typically the value that is multiplied by an emission factor to generate an emissions amount that should be expressed as tons per year (TPY). Note that this is the rate of the process that produces emissions and is not necessarily the amount of throughput of material passed through a piece of equipment. For example, for a compressor engine that is burning natural gas, the process rate would refer to the amount of natural gas burned by the engine, not the amount of gas compressed by the engine-driven compressor.

For tanks with no throughput activity: If the tank has product stored, the tank will remain active and the storage capacity of the tank or the actual amount stored should be entered as the throughput. The tank will still be emitting breathing losses even though there isn't any throughput.

G. Process Rate Units

The units of measure used to quantify the rate of the activity that produces air emissions.

H. Design Capacity (Report only if unit is a boiler, turbine, or internal combustion engine.)

The design capacity of the process equipment operating at 100% of the designed rate. For a boiler, design capacity is based on the reported maximum continuous steam flow. Report the design capacity for a boiler as MMBtu/hr (million British thermal units per hour). For a turbine report the design capacity as horsepower (hp) or megawatts (MW). For an internal combustion engine report the design capacity as hp.

I. Fuel Heat Content

The heat content of a fuel in million British thermal units (MMBtu) per the standard unit of measure for that type of fuel, that is:

  • (1) MMBtu per MMscf (million standard cubic feet) for gaseous fuels
  • (2) MMBtu per ton for solid fuels
  • (3) MMBtu per 1000 gallons for liquid fuels

J. % Sulfur

The percentage of sulfur, by weight, in the process fuel. The value must be between 0.01% and 10%, inclusive.

K. % Ash

The percentage of ash, by weight, in the process fuel. The value must be between 0.01% and 20%, inclusive.

L. Hours Per Day

The typical hours per day that the emitting process operates during the inventory period. This must be a number between 0 and 24 (inclusive).

M. Days Per Week

The typical days per week that the emitting process operates during the inventory period. This must be a number between 0 and 7 (inclusive).

N. Weeks Per Year

The typical weeks per year that the emitting process operates during the inventory period. This must be a number between 0 and 52 (inclusive).

O. Actual Hours Per Year

This represents the total actual hours the process operated during the calendar year for which the emissions inventory is being submitted. For leap years, actual hours per year must be a number between 0 and 8784 (inclusive). For all other years, this must be a number between 0 and 8760 (inclusive).

If during leap years, actual hours per year and/or actual emissions are over a permit limit, leave a note in the emission unit's memo field. Do not report excess emissions if the sole cause of the overage is due to the extra 24 hours of operation.

P. Seasonal Fractions

The fraction of the total operation that occurs in each season. This expresses the part of the actual annual activity information based on the four seasons. Seasonal fractions should be reported as decimals. For example, if 40% of production took place in summer, "0.40" should be entered for the summer season. Total seasonal operations should equal 100% or 1.0.

  • (1) Spring
    The percentage of the total annual activity that a process operates during the spring months (March, April, May).
  • (2) Summer
    The percentage of the total annual activity that a process operates during the summer months (June, July, August).
  • (3) Fall
    The percentage of the total annual activity that a process operates during the fall months (September, October, November).
  • (4) Winter
    The percentage of the total annual activity that a process operates during the winter months (December, January, February). Note that these months must be for the same reporting year.

VII. EMISSIONS INFORMATION

A. Pollutant Description

The name of the substance, compound, or compound group of which emissions are produced.

B. CAS

The Chemical Abstract Services registration number for the pollutant (if applicable).

C. Calculation Method

The approved method used for computing or measuring emissions.

If you want to change the method of calculation, verify the method falls under any of the permissible methods. Otherwise, a new method must be pre-approved by the DEQ before submitting your annual inventory. Contact the Emissions Inventory Section for assistance. Details and references to support the new method may be requested.

D. Emission Factor

The ratio relating emissions of a specific pollutant to an activity or material process rate. The numeric value of this field is dependent upon the calculation method and the emission factor's numerator and denominator units. A pollutant-specific emission factor is typically expressed as pounds (lbs) per process rate units. If uncontrolled emission factors are reported here, reduce the resulting amount of emissions by the actual capture and control efficiencies of the control scenario.

Providing emission factors enables us to check and verify your calculations. In the case of specific models like E&P TANKS or GRI-GLYCalc with many input variables, there may not be a unique emission factor for each particular set of conditions. Enter zero (0) in the emission factor field and for the numerator and denominator select "N/A - Formula, Software, or CEMS."

E. Method/Factor includes Control Efficiency?

Check this box if the emission factor includes the control efficiency, meaning the factor is a Controlled Factor.

F. Factor Numerator Units

This is usually pounds but can be another unit, such as grams, where the emission factor is in grams per horsepower-hour (g/hp-hr).

G. Factor Denominator Units

These units are usually the same as the process rate units. For example, for a natural gas boiler the process rate is measured in million standard cubic feet (MMscf); the emission factor numerator unit would be pounds and the denominator unit would be million standard cubic feet (i.e., lbs/MMscf).

For calculation methods where there may not be one single emission factor used to compute the actual emissions (e.g., E&P TANKS, GRI-GLYCalc, CEMS), enter zero (0) in the emission factor field and for the numerator and denominator select "N/A - Formula, Software, or CEMS."

H. Trace (<0.001 TPY)

The trace checkbox can be used to indicate that emissions of a regulated pollutant have been estimated to be less than 0.001 tons. For emissions estimated to be greater than 0.001 tons but less than the reporting threshold of 0.1 tons (for most situations), a company can either report the quantified amount or report "0." The trace checkbox should only be used if emissions are below 0.001 tons.

I. Actual Emissions (Tons)

Amount of actual annual emissions of the pollutant, after application of air pollution control equipment, reported in tons per year. The actual emissions for a plant, emission unit, or process—measured or calculated—that represents a calendar year. This total shall include emissions from fugitives, upsets, startups, shutdowns, malfunctions, and excess emissions. The actual emissions field will allow emissions to three decimal places.

Reporting Thresholds
A lower cut-off or minimum amount of emissions of an individual pollutant that should be reported is not defined by rule. If during normal operations emissions are 0.1 tons or greater of any regulated air pollutant at a process, then the emissions must be reported. The key exceptions that must be reported at 0.001 tons or greater per process are:

  • (1) Lead, mercury, and chromium
  • (2) Any HAP at a facility that is also reported to the TRI
  • (3) Any HAP from glycol dehydration still vents
  • (4) Any HAP from large storage tanks (>500 BBL)
  • (5) Other situations where deemed necessary

J. Reference

The specific source or material containing the method of calculation and factor. When using "AP-42 Factors" as a calculation method, record the table number (e.g., "Table 1.4-1"). When using "Permit Factors," insert the permit number unless the permit reference is AP-42. It is preferred to site the original source of the factor. When using "FIRE Data Factors," list the appropriate AP-42 section, table, or EPA document. Other references may include EPRI, RMA, UEF, etc. Other calculation methods may not have a reference, so leaving the field null in this case is acceptable.

K. Excess Emissions (Tons)

The amount of annual excess emissions as defined by OAC 252:100-1-3. This amount shall be included in the total amount of actual emissions.

Flaring events that do not exceed permit limits do not need to be reported as excess emissions. These limits may be per hour, as well as per year.

The amount of emissions from such events must still be entered in the actual emissions field.

Any emissions that are in excess of a permit or other such limit (this can also include malfunctions and maintenance activities) must be included in your excess emissions total. The excess may be over an hourly limit, and although it may not be enough to cause total emissions of that pollutant to exceed an annual limit, any excess amount must be entered in the total excess emissions field.

Any excess emission amounts that are formally reported to the Compliance and Enforcement Section of the AQD (as required by OAC 252:100-9) must be included in both the actual emissions field and the total excess emissions field.

L. Permit/Rule Limit (TPY)

The total amount of any regulated air pollutant which is subject to an emissions limiting standard, either by rule or permit condition contained in an enforceable permit.

When a facility's permit does not specifically set an emission limit for a particular pollutant from a particular emission unit (facility-wide limits only), enter zero (0) in this field to designate no specific emissions limit for the pollutant at that unit.

M. Capture Efficiency (%)

The percentage of air emission that is directed to the control equipment, or an estimate of that portion of an affected emissions stream that is collected and routed to the control measures, when the capture or collection system is operating as designed.

N. Control Scenarios (Primary and Secondary)

The control system, abatement equipment, or approach applied to reduce emissions of the pollutant.

O. Control Efficiencies (%) (Primary and Secondary)

The amount of actual air emissions prevented from being emitted by the control scenario. The actual efficiency should reflect maintenance degradation. Control efficiencies should be reported as a percentage.

P. Additional Emission Guidance

  • (1)Particulate Matter (PM-10 and PM-2.5) Emissions
    The speciation and reporting of particulate emissions is dependent on particle size.
    • PM-10
      This means all particulate matter with an aerodynamic diameter of 10 micrometers or less (i.e, fine and coarse particle fractions combined).
    • PM-2.5
      This means all particulate matter with an aerodynamic diameter equal to or less than 2.5 micrometers (i.e., the fine particle fraction). PM-2.5 is a subset of PM-10. PM-2.5 can be less than or equal to, but never greater than, PM-10. If reporting PM-2.5, then PM-10 must also be reported. Note that all condensable PM is assumed to be in the PM-2.5 category.

    Oklahoma DEQ does not distinguish between condensable and filterable PM. All primary PM must be reported using the above categories.

    Do not double-report PM Hazardous Air Pollutants (HAPs). A regulated pollutant that is particulate matter and is also a HAP should be reported as the specific HAP only. HAPs should be speciated and reported separately where possible. They should not be also reported under the broader PM category. The reported total amounts of PM-10/PM-2.5 should be adjusted (reduced) as necessary. Following the above procedure will ensure that HAP emissions are not counted twice in the fee process.

  • (2) Volatile Organic Compound (VOC) Emissions
    VOC emission factors and emission amounts should be reported as "Total VOC." A HAP that is also a VOC should be calculated and reported separately if emissions of that HAP are above the reporting threshold for that HAP. Also, please review calculation methods for deriving total VOC emission amounts and report speciated HAPs as appropriate, exercising caution where a VOC emission factor explicitly excludes an individual HAP due to test method limitations.

VIII. CERTIFICATION PAGE

A. Facility Summary

Hard copy reporters should total their emissions by pollutant and report those totals on a summary page. Blank summary pages can be found here.

B. Certification by Company Responsible Official (RO)

The emissions inventory shall contain a certification by a company's RO (as defined in OAC 252:100-1-3) of the truth, accuracy, and completeness of the document, as required by OAC 252:100-5-2.1(f). This certification shall be signed by an RO and shall contain the following language:

"I certify, based on information and belief formed after reasonable inquiry,
the statements and information in the document are true, accurate, and complete."