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Proposed Revisions to 40 CFR Part 75 (8/28/06)

On August 4, 2006, EPA posted to its website proposed revisions to 40 CFR Part 75.  EPA posted the proposed revision and also an “unofficial” redline/strikeout version of the Rule as Volumes 1 & 2.  The proposed revisions were formally published in the Federal Register on August 22, 2006.  Highlights of the proposed revisions are listed below.

  • Revisions to the recordkeeping and reporting requirements to accommodate the changes from the ASCII to XML reporting formats.  As a reminder, new sources first reporting in 2008 should begin reporting in the XML-EDR format.  All sources are required to report in the XML format beginning January 1, 2009.

  • Changes to the QA/QC requirements associated with ozone-season only reporters in the regional NOx Budget Program.

  • Introduces requirements that RATAs be conducted and sorbent trap monitoring systems be operated by an Air Emissions Testing Body (AETB) conforming to the requirements specified in ASTM D7036-04.  The AETB shall either provide a “Qualified Individual” on-site to conduct or shall oversee RATAs.  The “Qualified Individual” shall provide source(s) with copies of the qualification credentials relevant to this testing.  This is a problematic requirement since the whole issue surrounding test contractor certification is still in a state of flux.

  •  Introduces new fuel specific F-factors for bituminous and sub-bituminous coal as well as petroleum coke and tire derived fuel.

  • Proposes to restrict use of the diluent cap to NOx emission rate calculations only.

  • Harmonizes QA/QC requirements between Ontario Hydro Mercury Method and the Appendix K sorbent methodology.

  • Revises missing data procedures for sorbent trap monitoring systems to mirror those for Hg CEMS.

  • Introduces a “single trap adjustment factor” (STAF) of 1.222 for sorbent trap monitoring systems.  The results of the valid trap sample is multiplied by the STAF: (1) when one of the paired traps fails to meet the Appendix K QC requirements for paired traps or (2) when one of the paired traps is lost, damaged or broken.

  • Proposes emission test requirements when a fuel (i.e., coal) supply is changed for Hg low mass emission (LME) units.  However, the rule does not address requirements for periodic combustion of other solid fuels or fuel blends and is soliciting comments on applying the LME provisions to these situations.

  • Finally, EPA is also soliciting comments on the use of sorbent traps for reference method testing.

Comments on the proposed 40 CFR Part 75 revisions are due no later than October 23, 2006.  Copies of the redline/strike version as well as the Federal Register version of the proposed 40 CFR Part 75 revisions are available in our FTP Library.  For more information, please contact Ralph Roberson at (919) 791-3121.

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Last Revised: January 31, 2007