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Resources for Creating An
Emissions Inventory
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ODEQ Web Site
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What is a Turn Around Document? (“TAD”)
The owner or operator of any facility that is a source of air contaminants shall submit a complete emission inventory annually on forms obtained from the Division. The TAD is the form used to report the Emissions Inventory data to Oklahoma DEQ
DEQ Form #100-730 (TAD) contains the annual emissions inventory for a particular facility, as well as other relevant information such as the facility location and address, ownership details, operating hours and process rates, etc.
Redbud is the preferred method to report emissions inventories and provides a complete printed Turn Around Document for records
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Emission Inventory Data Flow
Air Permit Data
Webfire & AP-42 Data
Operation & ProductionInformation
Other Data Sources
Completed Emission Inventory
Submitted to DEQ
Redbud Hardcopy
TAD
Submit by Mail Submit Electronically
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TAD – Company/Facility Information
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TAD - Emission Unit/Release Point/Process Information
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TAD - Emission Information
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Redbud Structure
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Process & Emission Page
Facility Page
Company Page
Emission
Unit Page
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Company Page
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Facility Page
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Emission Unit/Release Point Page
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Process and Emission Page
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Assembling Emission
Inventory Data
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First Stop -Your Air Permit
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I . FACILITY DESCRIPTION II. PROCESS DESCRIPTIONIII . EQUIPMENTIV. AIR EMISSIONSV. INSIGNIFICANT ACTIVITIESVI. OKLAHOMA AIR POLLUTION CONTROL
RULESVII. FEDERAL REGULATIONSVIII. COMPLIANCEIX. SUMMARY
Permit Memorandum Sections
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Permit writer includes initial application data
Emission calculations and referenced sources
Normally lists the acceptable Emission Factors
Your Permit Memorandum
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182012 Emissions Inventory Workshop
Specific Conditions
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Types of Emission
Inventory Data
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Emission Units Stack or Emission Release Point Data Emission Processes Fuel Combustion Data Pollutants Emission Factors Controls Emission Limits
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Emission Unit
Every emission unit must have:
An emission release point (stack)
At least one process
If active, one or more pollutants
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2012 Emissions Inventory Workshop
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Emission Unit Status
Operating–this emission unit operated all or part of the calendar year (Active at anytime during the year).
Temporarily Shutdown–this emission unit did not operate at all during the calendar year, but may restart at sometime in the future (no emissions during the calendar year).
Permanently Shutdown–select this status if an emission unit has been removed, removed from service, or is permanently shutdown (no emissions during the calendar year).
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Specific Conditions Section
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Emission Release Point Information
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Types of Emissions Release Points
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Stack Fugitive
Height above ground level
Storage Tank
Pipe work
Minerals
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Emission Release Point
Stack or Fugitive Data
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One or the OtherNot Both
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Sometimes listed in the Permit
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292012 Emissions Inventory Workshop
Fugitive Emission Group
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Emissions Process Information
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Emissions Process Information
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Description of each process or activity at an emission unit
This description is assigned by the SCC
A single point may have two or more processes
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Fuel Combustion Data
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Design Capacity for Combustion Processes
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From Specific Conditions:
From Permit Memorandum:
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Fuel Data(for combustion processes)
Sulfur %: Mass percentage of the sulfur content in the process fuel
Ash %: Mass percentage of the ash content in the process fuel
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Multiple ProcessesWithin an Emissions Unit
TANKS: if over 5 tons of emissions – separate breathing, working and flashing losses. Under 5 tons of emissions, losses can be combined using SCC 40400311
ANY EQUIPMENT that utilizes different
process material (coal, wood, natural gas)
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Multiple Processes
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Emission Information
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Emission Information
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Contains information on all the pollutants
Includes the methods of calculation, emission factors & units (numerator & denominator), and the amount of emissions as calculated from the reported activity, excess emission and control
equipment details
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Criteria Air Pollutants
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Air pollutants for which an ambient air quality standard has been set (health based and/or environmentally-based criteria)
Air pollutants for which acceptable levels of exposure can be determined (permissible levels)
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Criteria Air Pollutants
Carbon monoxide (CO) Nitrogen oxides (NOx)
Sulfur dioxide (SO2) Lead (Pb)
Particulate matter (PM) Ozone (O3)2012 Emissions Inventory Workshop
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Air Pollutants
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Air Toxics - Hazardous Air Pollutants (HAPs) Section 112b http://www.deq.state.ok.us/aqdnew/toxics/index.htm
Mercury (Hg) - Mercury is a HAP in Section 112b listhttp://www.epa.gov/ttn/atw/orig189.html
Ammonia - 40 CFR 51 Subpart A (CERR)http://www.deq.state.ok.us/aqdnew/emissions/
OklahomaEmissionsInventoryRAPreportingList.htm
For more information: http://www.deq.state.ok.us/aqdnew/emissions/Oklahoma
RegulatedAirPollutants.htm
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Particulate Matter
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Two Categories – Dependenton Particle Size
PM-10 and PM-2.5
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Particulate Matter
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"PM-10" means all particulate matter with an aerodynamic diameter of 10 micrometers or less (fine & coarse
particle fractions combined)
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Particulate Matter
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"PM-2.5" means particulate having an aerodynamic diameter equal to or less
than 2.5 micrometers (i.e., the fine particle fraction)
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TWO POLLUTANTS to REPORT
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Size (microns)
Amt PM-2.5
2.5 10
Amt PM-10
100
0
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Emission Factors
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What Is An Emission Factor?
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An emission factor is a representative value that attempts to relate the quantity of a pollutant released to the atmosphere with an activity associated with the release of that pollutant.
Emissions = EF x Process Rate These factors are usually expressed as the weight of pollutant divided by a unit weight, volume, distance, or duration of the activity emitting the pollutant.
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Sometimes it is as easy as this…
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Stockpiles
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Is an Emission Factor Needed?
Storage Tanks - use the Software TANKS Landfills - use LANDGEM, a gas emissions
model Tank Flashing - Vasquez-Beggs equation Glycol Dehydrator Reboiler - GRI-GLYCalc
These are models with formulas using multiple variables.
There is no single emission factor.
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252:100-5-2.1. Emission inventory
(d) Method of calculation. The best available data at the time the emission inventory is or should have been prepared shall be used to determine emissions
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Emission Factors with Safety Factor
Should Not Be Used Stack testing plus 25% safety factor
AP-42, 7/98, Sec. 1.4 plus 25% safety factor
Baghouse manufacturer guarantee plus safety factor
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Additional EF Sources
AP 42, Fifth EditionCompilation of Air Pollutant Emission Factors, Volume 1: Stationary Point and Area Sources
http://www.epa.gov/ttn/chief/ap42/index.html
WebFIRE http://cfpub.epa.gov/webfire/index.cfm
Stack Testing
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Controls
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Controls
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Control Efficiency %
Actual amount (%) of air emissions prevented from being emitted by a control approach
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Capture Efficiency % Capture efficiency:
The percentage of air emission that is directed to the control equipment
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If emissions escape prior to the control device, these should be accounted for in the total actual emissions amount.
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A Control Device as anEmission Unit
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Limits/Trace/Regulations
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Permit Limits
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Allowed Emissions (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 or potential to emit, or for grandfathered sources,
emission limits based on maximum design capacity and considering all applicable rules.
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Permit Emission Limits
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If a process emits 2 pounds or more of a regulated air pollutant (≥ 0.001 tons)
Please Report Them!!
Trace (<0.001 TPY): Use the Trace check box to indicate annual emissions have been calculated but are
less than 0.001 Tons (2.0 lbs).
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EmissionsWhat should be reported?
All Actual Emissions not Permit limits or Potential to Emit Values
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Do excess emissions from malfunctions, startups and
shutdowns need to be included?
Yes, Report the following:
Emissions that are in excess of a permit or other such limit should be reported in the excess emission field
However, ALL actual emissions must be reported in the total emissions field
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Regulations Oklahoma Administrative Code (OAC) 252:100
Subchapter 5 – Emissions Inventory
Permit Exempt and De Minimus Facilities not required to submit
Subchapter 7 – Minor Permits Subchapter 8 – Major Permits
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Remember Air Quality Rules
Always Apply
http://www.deq.state.ok.us/mainlinks/deqrules.htm
Site Specific Questions
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Call us for help with your inventory.
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General Inquiries (405) 702- 4100
Mark Gibbs (405) 702- 4179
Michelle Horn (405) 702- 4176
Jenafer Icona (405) 702- 4212
Justin Milton (405) 702- 4210
Carrie Schroeder (405) 702- 4214
Matthew Weis (405) 702- 4178