Creating your emissions inventory.

              Where to start?How will I recognize an emissions unit?

An emission release point

At least one process that produces air emissions

One or more pollutants
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Omissions in Emissions!
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Obvious emission units:engine, tanks, furnace
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Not so obvious:Upset and start ups, fugitive leaks, solvent use, haul roads/fugitive dust sourcesRegulations
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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Resources
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Oklahoma DEQ Website http://www.deq.state.ok.us/
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EPA’S Clearinghouse for Inventories& Emission Factors http://www.epa.gov/ttn/chief/index.html
ANDYour Air Permit
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I . FACILITY DESCRIPTION II. PROCESS DESCRIPTIONIII . EQUIPMENTIV. AIR EMISSIONSV. INSIGNIFICANT ACTIVITIES
VI.
OKLAHOMA AIR POLLUTION CONTROL RULES
VII.
FEDERAL REGULATIONS
VIII.
COMPLIANCE
IX.
SUMMARY
Permit Memorandum Sections
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Permit writer includes initial application data
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Emission calculations and referenced sources
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Normally lists the acceptable Emission Factors
Your Permit Memorandum
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Thepermit memorandum is not the final word for Emission Inventories
The permit may list some processes as:
But Beware ! 2011 Emissions Inventory Workshop 9
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Specific Conditions•
Emission Units and Processes
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Emission Factors
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Emission Limits
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Design Capacity for engines, boilers and turbines
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Stack or Emission Release data
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Permitted pollutants
•
ControlsEmission Units
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Multiple ProcessesWithin an Emissions Unit
TANKS: if over 5 tons of emissions –separate breathing, working and flashing losses
ANY EQUIPMENT that utilizes different Process Material (coal, wood, natural gas)
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Multiple Processes
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Specific Conditions Section
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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 RateThese factors are usually expressed as the weight of pollutant divided by a unit weight, volume, distance, or duration of the activity emitting the pollutant.Is an Emission Factor Needed?

Storage Tanks -use the Software TANKS

Landfills -use LANDGEM, a gas emissions model

Tank Flashing -Vasquez-Beggsequation

Glycol Dehydrator Reboiler -GRI-GLYCalc
These are models
with formulas using multiple variables.
There is no single emission factor. 2011 Emissions Inventory Workshop 20
Sometimes it is as easy as this…
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Stockpiles
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Fugitive Emissions
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Alternate EF Sources
.

AP 42, Fifth EditionCompilation of Air Pollutant Emission Factors, Volume 1: Stationary Point and Area Sources

WebFIRE
http://cfpub.epa.gov/webfire/index.cfm
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Stack Testing 2011 Emissions Inventory Workshop 24
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 LIMITS
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DESIGN CAPACITY
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From Specific Conditions:
From Permit Memorandum:EMISSION RELEASE POINTPARAMETERS
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Sometimes listed in the Permit
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EMISSIONS
What should be reported?
AllActual Emissions
not
Permit limits
or
Potential to Emit Values
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If a process emits 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).A Control Device as anEmission Unit
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Controls
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Summary ……

Look to your PERMIT to CREATE or REVIEW your EMISSIONs INVENTORY
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
Pay special attention to your SPECIFIC CONDITIONS
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Emission Units
EmissionFactors
Controls2011 Emissions Inventory Workshop 36
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Emission Inventory Regulation Requirements MAY DIFFER from Permit
REPORTRegulated Pollutantsover 2 pounds
Even if permit
considers the process
insignificant2011 Emissions Inventory Workshop 37
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Report your ACTUAL EMISSIONS
Not Permit Limits
Actual EmissionsCall us if you have any question about using your permit and building your inventory.
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aei@deq.ok.govmorris.moffett@deq.ok.govrobert.eddington@deq.ok.govmark.gibbs@deq.ok.gov michelle.horn@deq.ok.gov carrie.schroeder@deq.ok.gov john.munro@deq.ok.gov