Proposed Revisions to 40 CFR Part 75
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
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.
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
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
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
For more information, please contact Ralph Roberson at (919) 791-3121.
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January 31, 2007