1 / 31

Colorado BART

Colorado BART. APCD. Class 1 Areas. National Parks and Wilderness Areas 12 in Colorado 4 National Parks 8 Wilderness Areas. BART Rulemaking. Stakeholder Process Most BART Sources Involved Rule Passed March 2006 Modeled After EPA Rule. BART Rule. Contribute 0.5 Deciview

jana-mooney
Télécharger la présentation

Colorado BART

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Colorado BART APCD

  2. Class 1 Areas • National Parks and Wilderness Areas • 12 in Colorado • 4 National Parks • 8 Wilderness Areas

  3. BART Rulemaking • Stakeholder Process • Most BART Sources Involved • Rule Passed March 2006 • Modeled After EPA Rule

  4. BART Rule • Contribute 0.5 Deciview • Cause 1.0 Deciview • Pollutants – NOx, SO2, PM • VOC not included

  5. BART Rule • Post Combustion Controls NOT to be considered for NOx • Presumptive limits applicable to Coal Power Plants as guideline • 5 Factors also considered • Only 1 plant over 750 MW

  6. BART Rule • Consideration of Impact on Coal Mines in Colorado • Due to concern over classification of sub-bituminous coal • Presumptive Limits based on Powder River coal

  7. BART Rule • Some Colorado Sub-bituminous has higher Nitrogen and lower volatility • Presumptive levels can’t be met • Alternatives allowed • SIP must be approved by Legislature • Applications Received August 1, 2006

  8. Previous BART Actions • Certification of Visibility Impairment in Mt. Zirkel Wilderness by USFS in 1993 • Craig and Hayden Power Plants were Implicated • Settlements agreed to in 1996 and 2001

  9. Craig plant • Units 1 & 2 • Had Wet Limestone Scrubbers and ESP • Upgrade of Scrubbers – eliminate by-pass, improve spray modules with trays

  10. Craig plant • New Baghouses • New Lo –NOx burners with overfire air • SO2 - 0.16 lb/MMBtu 30 day average • 0.13 lb/MMBtu 90 Day • NOx – 0.30 lbs/MMBtu annual average

  11. Hayden Plant • Units 1 and 2 • Originally only ESPs • New Controls • Lime Spray Dryer • Baghouse • Lo-NOx Burners w/OFA

  12. Hayden Plant • SO2 - 0.16 Ib/MmBTU 30 day • 0.13 lb/MMBtu 90 day average • Hayden and Craig actions included in Visibility SIP

  13. Colorado BART • Because all but one of our BART sources are power plants, Guidance was issued to simplify the BART analyses. • Look at Lime Spray dryers only • Look at Current Lo-NOx burners and overfire air

  14. Colorado Bart • Consider ROFA if can’t reach presumptive levels (per EPA Appendix Y) • All Plants have baghouses • Sources can look at other controls if they want.

  15. Colorado BART • We hoped to simplify the BART process by using information gained from Craig and Hayden Settlements.

  16. BART SOURCES • Built between 1962 & 1977 • Before PSD rules applied • One of 26 listed source categories • PTE > 250 TPY • Emit SO2, NOx, PM10

  17. COLORADO SOURCES • Originally 16 Facilities • Final List 9 facilities • 13 Coal Electric Units • 1 Portland cement plant • 2 Coal Fired Industrial Boilers

  18. EXEMPT SOURCES • Reconstruction • Deminimis Impact Modeled • Less than 0.5 deciview

  19. Exempt Sources • Gas Fired Boilers < 250 MMBtu/hr each • Reconstructed - Portland cement plant and Steel Mill Arc Furnace • Pharmaceutical Production – VOC only • Refinery and Power Plant – Modeled below 0.5 dV • One plant shutdown

  20. COLORADO EMISSIONS • From Stationary Sources 2003 • SO2 – 83,640 Tons per Year • NOx – 123,273 TPY

  21. BART ALTERNATIVES • Must Be Better than BART • July 2005 BART Rule Provides for Two pronged test to evaluate • Emissions reduction or Modeling • Colorado will use Emission Test, Similar to CAIR example

  22. Existing Agreements • XCEL Voluntary Emission Reduction Agreement – 1998 • SO2 Emission Cap in Metro Denver Area – 10,500 TPY • Three Plants – 7 units involved • Previous SO2 = 25,000TPY

  23. XCEL AGREEMENT • Settles contested issue involving Pawnee plant and its BART applicability • In existence date is contested • Alternative includes BART Presumptive level Controls on Pawnee

  24. Comanche Plant • Units 1 & 2 – 350 MW each are BART sources. • Agreement reached in order to Build Unit 3 (750 MW) • New LSD, Lo-NOx Burners and OFA • Limits less than BART Presumptive

  25. Emission Reduction Estimate • SO2 - 34,000 Tons per Year • Includes 12,000 from Comanche • NOx - 7,000 - 10,000 TPY

  26. ISSUES • Post Combustion Controls • Annual Limit in XCEL Agreement • Are the Alternatives Appropriate? • Little Guidance in New EPA Alternative Rule

  27. ISSUES • How much Visibility Improvement is necessary for a source to achieve. • What $/Ton levels should be used to judge cost? • Should there be a $/deciview level set? • Averaging Times

  28. Future Action • Complete BART Determinations/Appeals and Conduct Public Comment in January 2007 • Receive EPA comments on Alternatives • Appeal of BART determinations • Rocky Mountain National Park Nitrogen deposition

More Related