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

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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Specific Conditions

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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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

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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Fugitive Emission Group

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

Fuel Combustion Data

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Design Capacity for Combustion Processes

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From Specific Conditions:

From Permit Memorandum:

    

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

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)

Criteria Air Pollutants

Carbon monoxide (CO) Nitrogen oxides (NOx)

Sulfur dioxide (SO2) Lead (Pb)

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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

Particulate Matter

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Two Categories – Dependenton Particle Size

PM-10 and PM-2.5

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)

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)

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

    

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.

2012 Emissions Inventory Workshop

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