

[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
