![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
Two Optional Methods for Relative Accuracy Test Audits of Mercury Monitoring Systems Installed on Combustion Flue Gas Streams and Several Amendments to Related Mercury Monitoring Provisions
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
[Federal Register: September 28, 2007 (Volume 72, Number 188)]
[Corrections]
[Page 55278-55279]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr28se07-163]
[[Page 55278]]
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Parts 60 and 75
[EPA-HQ-OAR-2007-0164, FRL-8459-8]
RIN 2060-AO01
Two Optional Methods for Relative Accuracy Test Audits of Mercury
Monitoring Systems Installed on Combustion Flue Gas Streams and Several
Amendments to Related Mercury Monitoring Provisions
Correction
In rule document 07-4147 beginning on page 51494 in the issue of
Friday, September 7, 2007, make the following corrections:
Appendix A-8 to Part 60 [Corrected]
1. On page 51507, in Appendix A-8 to Part 60, in Method 30A, in
section 9.0, in the fourth column of the table, in the tenth line from
the bottom of the column, ``percentages..'' should read
``percentages.''.
2. On the same page, in the same appendix, in the same section, in
the fifth column of the table, in the third line from the bottom of the
column, ``initial dynamic'' should read ``initial run; dynamic''.
3. On page 51508, in the same appendix, in the same section, in the
table, entry ``A'' is corrected to read as follows:
Summary Table of QA/QC Requirements--Continued
----------------------------------------------------------------------------------------------------------------
Acceptance
Status\1\ Process or element QA/QC specification criteria Checking frequency
----------------------------------------------------------------------------------------------------------------
* * * * * * *
A.............................. Sample Point Stratification Test (See If the Hg Prior to first
Selection Section 8.1.3). concentratio run.
n\2\ at each Prior to 1/1/09,
traverse you may (1) forgo
point during stratification
the testing and use 3
stratificati sampling points
on test is: (as per Section
• 8.1.3.2.2) or (2)
Within < plus- perform a SO2
minus>5% of stratification
mean, use 1- test (see
point Sections 6.5.6.1
sampling (at and 6.5.6.3 of
the point appendix A to
closest to part 75), in lieu
the mean); of a Hg
or stratification
• Not test. If the test
within < plus- location is
minus>5% of unstratified or
mean, but is minimally
within < plus- stratified for
minus>10% of SO2, it can be
mean, use 3- considered
point unstratified or
sampling. minimally
Locate stratified for Hg
points also.
according to
Section
8.1.3.2.2 of
this method.
Alternatively
, if the Hg
concentratio
n at each
point is:
Within < plus-
minus>0.2
[mu]g/m\3\
of mean, use
1-point
sampling (at
the point
closest to
the mean);
or
• Not
within < plus-
minus>0.2
[mu]g/m\3\
of mean, but
is within
< plus-
minus>0.5
[mu]g/m\3\
of mean, use
3-point
sampling.
Locate
points
according to
Section
8.1.3.2.2 of
this method.
* * * * * * *
----------------------------------------------------------------------------------------------------------------
4. On page 51509, in the same appendix, in section 12.1, in the
first column, in the 13th line from the bottom of the column,
``Cbaseline'' should read ``Cbaseline''.
5. On the same page, in the same appendix, in the same section, in
the third column, in the 16th line, ``%;.'' should read ``%.''.
6. On the same page, in the same appendix, in the same section, in
the same column, in the 17th and 18th lines, ``R= Mean value of spike
recoveries at a particular target level, %;.'' should read ``R = Mean
value of spike recoveries at a particular target level, %.''.
7. On the same page, in the same appendix, in the same section, in
the same column, in the 19th line, ``%;.'' should read ``%.''.
8. On page 51522, in the same appendix, in Method 30B, in section
[[Page 55279]]
9.0, in the table, in the second column, in the last two lines of the
column, ``<10% of section 1 Hg mass for Hg concentrations > 1 [mu]g/
dscm;.'' should read ``< =10% of section 1 Hg mass for Hg concentrations
> 1 [mu]g/dscm;''.
Appendix B to Part 60 [Corrected]
9. On page 51527, in Appendix B to Part 60, in the second column,
in section 8.6.6.1, in the third line ``Eq. 12A-1'' should read ``(Eq.
12A-1)''.
Appendix K to Part 75 [Corrected]
10. On page 51530, in Appendix K to Part 75, in section 8.0, in the
table, in the third column, in the 13th line, ``analyzing field.''
should read ``analyzing field samples.''.
11. On the same page, in the same appendix, in the same section, in
the same table, in the fourth column, in the third line, ``Sample check
invalidated'' should read ``Sample invalidated''.
12. On the same page, in the same appendix, in the same section, in
the same table, in the same column, in the 12th and 13th lines,
``analysis samples until successful'' should read ``analysis until
successful''.
[FR Doc. C7-4147 Filed 9-27-07; 8:45 am]
BILLING CODE 1505-01-D