[Federal Register Volume 89, Number 24 (Monday, February 5, 2024)]
[Rules and Regulations]
[Pages 7624-7625]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: C1-2024-01530]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 141

[EPA-HQ-OW-2023-0541; FRL-11620-01-OW]


Expedited Approval of Alternative Test Procedures for the 
Analysis of Contaminants Under the Safe Drinking Water Act; Analysis 
and Sampling Procedures

Correction

    In rule document 2024-1530 beginning on page 5773 in the issue of 
Tuesday, January 30, 2024, make the following corrections:
    1. On page 5790, table ``Alternative Testing Methods for 
Disinfectant Residuals Listed at 40 CFR 141.131(c)(1)'' should have the 
column headings:

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        Residual                   Methodology       SM 21st edition \1\      SM 22nd edition,\28\                  ASTM \4\                    Other
                                                                              SM 23rd edition,\49\
                                                                              SM 24th edition \66\
--------------------------------------------------------------------------------------------------------------------------------------------------------

    2. On the same page, table ``Alternative Testing Methods for 
Parameters Listed at 40 CFR 141.131(d)'' should have column headings 
that appear as follows:

--------------------------------------------------------------------------------------------------------------------------------------------------------
 
--------------------------------------------------------------------------------------------------------------------------------------------------------
    Parameter          Methodology   SM 21st edition \1\     SM 22nd edition              SM 23rd     SM online \3\               EPA             Other
                                                                        \28\         edition,\49\
                                                                                  SM 24th edition
                                                                                             \66\
--------------------------------------------------------------------------------------------------------------------------------------------------------

    3. On the same page, table ``Alternative Testing Methods for 
Contaminants Listed at 40 CFR 141.402(c)(2)'' should have column 
headings that appear as follows:

--------------------------------------------------------------------------------------------------------------------------------------------------------
 
--------------------------------------------------------------------------------------------------------------------------------------------------------
    Organism          Methodology   SM 20th edition \6\  SM 21st edition \1\     SM 22nd edition              SM 23rd    SM online \3\            Other
                                                                                            \28\         edition,\49\
                                                                                                      SM 24th edition
                                                                                                                 \66\
--------------------------------------------------------------------------------------------------------------------------------------------------------

    4. On the same page, table ``Alternative Testing Methods for 
Contaminants Listed at 40 CFR 141.852(a)(5)'' should have column 
headings that appear as follows:

--------------------------------------------------------------------------------------------------------------------------------------------------------
 
--------------------------------------------------------------------------------------------------------------------------------------------------------
      Organism               Methodology                Method              SM 20th,    SM 22nd edition \28\  SM 23rd edition,\49\       SM online \3\
                                category                           21st editions \1\                          SM 24th edition \66\
                                                                                 \6\
--------------------------------------------------------------------------------------------------------------------------------------------------------

    5. On page 5792, table ``Alternative Testing Methods for 
Contaminants Listed at 40 CFR 143.4(b)'' should have column headings 
that appear as follows:

--------------------------------------------------------------------------------------------------------------------------------------------------------
 
--------------------------------------------------------------------------------------------------------------------------------------------------------
     Contaminant             Methodology            EPA method              ASTM \4\    SM 21st edition \1\   SM 22nd edition,\28\       SM online \3\
                                                                                                              SM 23rd edition,\49\
                                                                                                              SM 24th edition \66\
--------------------------------------------------------------------------------------------------------------------------------------------------------

    6. On the same page, table ``Alternative Testing Methods for 
Contaminants Listed at 40 CFR 143.4(b), the entry for Chloride should 
read as follows:

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Chloride.............  Silver Nitrate        .....................  D 512-04 B, 12 B....  4500-Cl-B...........  4500-Cl-B..........
                        Titration.
                       Ion Chromatography..  .....................  D 4327-11, -17......  4110 B..............  4110 B.............
                       Potentiometric        .....................  ....................  4500-Cl-D...........  4500-Cl-D..........
                        Titration.
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[[Page 7625]]

    7. On the same page, in the same table, the entry for Sulfate 
should read as follows:

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Sulfate..............  Ion chromatography..  .....................  D 4327-11, -17......  4110 B..............  4110 B.............
                       Gravimetric with      .....................  ....................  4500-SO42- C........  4500-SO42- C.......  4500-SO42- C-97.
                        ignition of residue.
                       Gravimetric with      .....................  ....................  4500-SO42- D........  4500-SO42- D.......  4500-SO42- D-97.
                        drying of residue.
                       Turbidimetric method  .....................  D 516-07, 11, 16....  4500-SO42- E........  4500-SO42- E.......  4500-SO42- E-97.
                       Automated             .....................  ....................  4500-SO42- F........  4500-SO42- F.......  4500-SO42- F-97.
                        methylthymol blue
                        method.
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[FR Doc. C1-2024-01530 Filed 2-2-24; 8:45 am]
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