Air Quality > TransAlta Agreement

TransAlta Agreement

In 2011, the Washington State Legislature passed a law replacing the nitrogen oxides portion of the state's mediated agreement with TransAlta.

• The new law
• Revisions to the BART order

Final Documents Related to the Mediation Agreement

NOTE: These documents are related to the state’s mediated agreement for limits on TransAlta’s emissions of mercury and nitrogen oxides. The nitrogen oxide limits are part of Ecology's Best Available Retrofit Technology (BART) determination. This agreement is separate from the state’s negotiations with TransAlta for reductions of greenhouse gas emissions.

• Signed settlement agreement
• Signed BART order
• Ecology's responses to all comments received on the mediation and settlement agreement
• Final technical support document for BART
• Ecology's responses to all comments received during the BART public comment period and hearing

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Comments Received

• EarthJustice comments on BART
• Coalition comments on mercury and NOx agreement
• TransAlta comments on mercury agreement
• NW Energy Coalition comments on mercury agreement
• Trout Unlimited comments
• Grundvig comments
• Pickard comments
• Valdas comments

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General Information

• Ecology/TransAlta memorandum of understanding
• General information about the Ecology/TransAlta mediation agreement
• Ecology's responses to pre-hearing questions from Earthjustice on TransAlta mediation agreement (from October 13 public hearing)

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Press Releases

June 21, 2010

• Documents posted online for agreement to cut emissions of mercury, visibility-limiting gases from coal-fired power plant

April 26, 2010

• State, TransAlta agree to formal talks on major reductions in greenhouse gas emissions from coal-fired power plant

September 8, 2009

• Public hearing, comment period set for proposed reductions of coal-fired power plant’s emissions

September 11, 2009

• Setting the record straight on the TransAlta air pollution reduction agreement

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BART Submittals from TransAlta

• BART Report Final, January 2008
• TransAlta BART Final report, July 2008
• Air Quality Permit Applicability Assessment Boiler Efficiency Project, Sept. 2007
• TransAlta Centralia Boiler Emissions Modeling Study, Final Report, Sept. 2007 by Black & Veatch
• BART Supplement, Nov. 2008
• Flex Fuels Appendix
• Flex Fuels Revised Tables
• Memo to File from Dan Zandel on LNCFS III discussion with Alstom, Dated Feb. 5, 2009
• Preliminary Responses to Department of Ecology and SWCAA on the January 2008 TransAlta, Centralia Power Plant BART Analysis, May 23, 2008
• TransAlta Supplemental Information, March 2010
  • Transmittal letter
  • Response to Ecology questions 1 and 3
  • Visibility modeling with flex fuels
  • Drawings
  • Response to Ecology questions 2, 4, and 5; and follow-up to question 3

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Ecology documents to TransAlta

• BART Comment Letter, April 25, 2008

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Other Documents

• EPA Region 10 letter on BART Applicability for the TransAlta Centralia power plant, Sept. 18, 2007

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Other BART Information

• Reducing Emissions That Cause or Contribute to Haze

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For Assistance or Further Details
Please Contact:
Al Newman
(360) 407-6810