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Using Your Permit to Create an Emissions Inventory

Using Your Permit to Create an Emissions Inventory. Emission Inventory Data Flow. Completed Emission Inventory Submitted to DEQ. Submit by Mail. Submit Electronically. Hardcopy TAD. Redbud. Webfire & AP-42 Data. Air Permit Data. Operation & Production Information. Other Data Sources.

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Using Your Permit to Create an Emissions Inventory

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  1. Using Your Permit to Create anEmissions Inventory 2013 Emissions Inventory Workshop

  2. Emission Inventory Data Flow Completed Emission Inventory Submitted to DEQ Submit by Mail Submit Electronically Hardcopy TAD Redbud Webfire & AP-42 Data Air Permit Data Operation & Production Information Other Data Sources 2013 Emissions Inventory Workshop

  3. First Stop -Your Air Permit 2013 Emissions Inventory Workshop

  4. Permit Memorandum Sections • I . FACILITY DESCRIPTION • II. PROCESS DESCRIPTION • III . EQUIPMENT • IV. AIR EMISSIONS • V. INSIGNIFICANT ACTIVITIES • OKLAHOMA AIR POLLUTION CONTROL RULES • FEDERAL REGULATIONS • COMPLIANCE • SUMMARY 2013 Emissions Inventory Workshop

  5. Your Permit Memorandum • Permit writer includes initial application data • Emission calculations and referenced sources • Normally lists the acceptable Emission Factors 2013 Emissions Inventory Workshop

  6. Specific Conditions 2013 Emissions Inventory Workshop

  7. Types of EmissionInventory Data 2013 Emissions Inventory Workshop

  8. Emissions Inventory Data Structure • Emission Units • Stack or Fugitive Release Point • Emission Processes • Fuel Combustion Data • Pollutants • Emission Factors • Controls • Emission Limits 2013 Emissions Inventory Workshop

  9. Emission Unit • Every emission unit must have: • At least one emission release point • At least one process • If active, one or more pollutants 2013 Emissions Inventory Workshop

  10. 2013 Emissions Inventory Workshop

  11. Specific Conditions Section 2013 Emissions Inventory Workshop

  12. 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). 2013 Emissions Inventory Workshop

  13. Emission Release Point Information 2013 Emissions Inventory Workshop

  14. Types of Emissions Release Points Stack Fugitive Height above ground level Pipe work Minerals Storage Tank 2013 Emissions Inventory Workshop

  15. For an Emission Release PointReport Stack or Fugitive Data One or the Other Not Both 2013 Emissions Inventory Workshop

  16. Sometimes listed in the Permit 2013 Emissions Inventory Workshop

  17. Fugitive Release Points From Permit: In Redbud: 2013 Emissions Inventory Workshop

  18. Emission Process Information 2013 Emissions Inventory Workshop

  19. Emission Process Information • Description of each process or activity at an emission unit • This description is assigned by the SCC • A single emission unit may have two or more processes 2013 Emissions Inventory Workshop

  20. Fuel Combustion Data Combustion Processes Only 2013 Emissions Inventory Workshop

  21. DesignCapacity From Specific Conditions: From Permit Memorandum: 2013 Emissions Inventory Workshop

  22. Fuel Heat Content 2013 Emissions Inventory Workshop

  23. Other Fuel Data Sulfur %: Mass percentage of the sulfur content in the process fuel Ash %: Mass percentage of the ash content in the process fuel For natural gas in Oklahoma report sulfur and ash percentages as zero 2013 Emissions Inventory Workshop

  24. Multiple ProcessesWithin an Emission Unit • ANY EQUIPMENT that can utilize different Process Material (coal, wood, natural gas) • CONDENSATE 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. 2013 Emissions Inventory Workshop

  25. Multiple Processes 2013 Emissions Inventory Workshop

  26. Emissions Information 2013 Emissions Inventory Workshop

  27. Emissions Information • Pollutant • Methods of calculation • Emission factor & units (numerator & denominator) • Control equipment • Permit/Rule limits • Amount of actual emissions • Excess emissions 2013 Emissions Inventory Workshop

  28. Criteria Air Pollutants • Air pollutants for which an ambient air quality standard has been set • Based on health and/or environmental criteria 2013 Emissions Inventory Workshop

  29. 2013 Emissions Inventory Workshop

  30. Regulated Air Pollutants • Defined in OAC 252:100 Appendix P • Criteria Pollutants • Hazardous Air Pollutants (HAPs) • Oklahoma Toxics (Appendix O) • Other pollutants regulated in OAC 252:100 • For more information: http://www.deq.state.ok.us/aqdnew/emissions/ • OklahomaRegulatedAirPollutants.htm 2013 Emissions Inventory Workshop

  31. Particulate Matter Two Categories - Dependent on Particle Size PM-10 and PM-2.5 2013 Emissions Inventory Workshop

  32. Particulate Matter PM-10 – all particulate matter with an aerodynamic diameter equal to or less than 10 micrometers PM-2.5 – all particulate matter with an aerodynamic diameter equal to or less than 2.5 micrometers 2013 Emissions Inventory Workshop

  33. Two Pollutants to Report PM-10 Amt 10 0 PM-2.5 Amt 2.5 10 0 Size (microns) 2013 Emissions Inventory Workshop

  34. 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 2013 Emissions Inventory Workshop

  35. Emission Factors 2013 Emissions Inventory Workshop

  36. What is an Emission Factor? An emission factor is a representative value that attempts to relate the quantity of a pollutant released to the atmosphere with an activity or process rate associated with the release of that pollutant. Emissions = Process Rate x EF These factors are usually expressed as the weight of pollutant divided by a unit weight, volume, distance, or duration of the activityemitting the pollutant. 2013 Emissions Inventory Workshop

  37. Sometimes it is as easy as this… 2013 Emissions Inventory Workshop

  38. Emission Factors are often in your permit 2013 Emissions Inventory Workshop

  39. Is an Emission Factor Needed? • Storage Tanks - TANKS • Landfills - 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. 2013 Emissions Inventory Workshop

  40. No Specific Emission Factor For the situations on the previous slide and for complex mass balance calculations enter: * N/A - Formula, Software or CEMS 0 * N/A - Formula, Software or CEMS 2013 Emissions Inventory Workshop

  41. No Specific Emission Factor Paint usage calculation: In Redbud: 2013 Emissions Inventory Workshop

  42. Emission Factors with Safety FactorShould 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 2013 Emissions Inventory Workshop

  43. 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 2013 Emissions Inventory Workshop

  44. Controls 2013 Emissions Inventory Workshop

  45. Controls 2013 Emissions Inventory Workshop

  46. Capture Efficiency % The percentage of air emissions that are directed to the control equipment If emissions escape prior to the control device, these should be accounted for in the total actual emissions amount. 2013 Emissions Inventory Workshop

  47. Control Efficiency % Actual amount (%) of air emissions prevented from being emitted by a control approach 2013 Emissions Inventory Workshop

  48. A Control Device as anEmission Unit Report combustion emissions at a separate emission unit 2013 Emissions Inventory Workshop

  49. Permit Limits 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. 2013 Emissions Inventory Workshop

  50. Permit Emission Limits 2013 Emissions Inventory Workshop

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