[Federal Register Volume 71, Number 125 (Thursday, June 29, 2006)]
[Corrections]
[Page 37168]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: C6-3]



  Federal Register / Vol. 71, No. 125 / Thursday, June 29, 2006 / 
CORRECTIONS  

[[Page 37168]]



ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 141

[EPA-HQ-OW-2002-0043; FRL-8012-1]
RIN 2040-AD38


National Primary Drinking Water Regulations: Stage 2 
Disinfectants and Disinfection Byproducts Rule

Correction

    In rule document 06-3 beginning on page 388 in the issue of 
Wednesday, January 4, 2006, make the following corrections:


Sec. 141.131  [Corrected]

    On page 481, in Sec.  141.31(c)(1) the table is corrected to read 
as set forth below:

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                                                    Residual measured 1
           Methodology              SM (19th or 20th       SM  Online 2           ASTM  method           EPA  method     -----------------------------------------------------------------------
                                          ed)                                                                                 Free  Cl2       Combined  Cl2      Total  Cl2           ClO2
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Amperometric Titration..........  4500-Cl D            4500-Cl D-00         D 1253-86 (96), 03       ...................  X                 X                 X                 ................
Low Level Amperometric Titration  4500-Cl E            4500-Cl E-00         .......................  ...................  ................  ................  X
DPD Ferrous Titrimetric.........  4500-Cl F            4500-Cl F-00         .......................  ...................  X                 X                 X                 ................
DPD Colorimetric................  4500-Cl G            4500-Cl G-00         .......................  ...................  X                 X                 X                 ................
Syringaldazine (FACTS)..........  4500-Cl H            4500-Cl H-00         .......................  ...................  X                 ................  ................  ................
Iodometric Electrode............  4500-Cl I            4500-Cl I-00         .......................  ...................  ................  ................  X                 ................
DPD.............................  4500-ClO2 D          ...................  .......................  ...................  ................  ................  ................  X
Amperometric Method II..........  4500-ClO2 E          4500-ClO2 E-00       .......................  ...................  ................  ................  ................  X
Lissamine Green                   ...................  ...................  .......................  327.0 Rev 1.1        ................  ................  ................  X
 Spectrophotometric.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1 X indicates method is approved for measuring specified disinfectant residual. Free chlorine or total chlorine may be measured for demonstrating compliance with the chlorine MRDL and combined
  chlorine, or total chlorine may be measured for demonstrating compliance with the chloramine MRDL.
2 The Standard Methods Online version that is approved is indicated by the last two digits in the method number which is the year of approval by the Standard Method Committee. Standard Methods
  Online are available at http://www.standardmethods.org.


[FR Doc. C6-3 Filed 6-28-06; 8:45 am]
BILLING CODE 1505-01-D