

[Federal Register: January 27, 2006 (Volume 71, Number 18)]
[Corrections]               
[Page 4644-4645]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr27ja06-103]                         

-----------------------------------------------------------------------

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 9, 141, and 142

[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:
    1. On page 424, in the third column, in the last paragraph, in the 
second line, ``complete'' should read ``completing''.
    2. On the same page, in the same column, in the same paragraph, in 
the 12th line, ``complete'' should read ``completing''.
    3. On page 426, the table is corrected to read as set forth below:

                                                Table IV.G-1.--IDSE Monitoring Frequencies and Locations
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                   Distribution system monitoring locations \1\
                                                                                        ----------------------------------------------------------------
          Source water type                Population size       Monitoring periods and   Total per                  Average
                                               category          frequency of sampling    monitoring   Near entry   residence    High TTHM    High HAA5
                                                                                            period       points        time      locations    locations
--------------------------------------------------------------------------------------------------------------------------------------------------------
Subpart H
                                       < 500 consecutive         one (during peak                   2            1  ...........            1
                                        systems.                 historical month) \2\.
                                       < 500 non-consecutive     .......................            2  ...........  ...........            1            1
                                        systems.
--------------------------------------
                                       500-3,300 non-           four (every 90 days)...            2            1  ...........            1  ...........
                                        consecutive systems.
                                       500-3,300 consecutive    .......................            2  ...........  ...........            1            1
                                        systems.
                                       3,301-9,999............  .......................            4  ...........            1            2            1
--------------------------------------
                                       10,000-49,999..........  six (every 60 days)....            8            1            2            3            2
                                       50,000-249,999.........  .......................           16            3            4            5            4
                                       250,000-999,999........  .......................           24            4            6            8            6
                                       1,000,000-4,999,999....  .......................           32            6            8           10            8
                                       >=5,000,000............  .......................           40            8           10           12           10
======================================
Ground Water
                                       < 500 consecutive         one (during peak                   2            1  ...........            1  ...........
                                        systems.                 historical month) \2\.
                                       < 500 non-consecutive     .......................            2  ...........  ...........            1            1
                                        systems.
--------------------------------------
                                       500-9,999..............  four (every 90 days)...            2  ...........  ...........            1            1
                                       10,000-99,999..........  .......................            6            1            1            2            2
                                       100,000-499,999........  .......................            8            1            1            3            3
                                       >=500,000..............  .......................           12            2            2            4           4
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ A dual sample set (i.e., a TTHM and an HAA5 sample) must be taken at each monitoring location during each monitoring period.
\2\ The peak historical month is the month with the highest TTHM or HAA5 levels or the warmest water temperature.


[[Page 4645]]

    4. On page 433, in the second column, in the third full paragraph, 
in the sixth and seventh lines, ``2x10/b 2x10-4, 
10-4 and 10-6'' should read 
``2x10-4''.
    5. On pages 434 and 435, Table IV.K-1 is corrected to read as set 
forth below:

   Table IV.K-1.--Technologies Considered and Predicted To Be Used in
                  Compliance Forecast for Small Systems
------------------------------------------------------------------------
            SW Water Plants                      GW Water Plants
------------------------------------------------------------------------
 Switching to chloramines as a    Switching to
 residual disinfectant.                   chloramines as a residual
                                          disinfectant
 Chlorine dioxide (not for        UV
 systems serving fewer than 100 people).
 UV............................   Ozone (not for systems
                                          serving fewer than 100 people)
 Ozone (not for systems serving   GAC20
 fewer than 100 people).
 Micro-filtration/Ultra-          Nanofiltration
 filtration.
 GAC20.........................
 GAC20 + Advanced disinfectants
 Integrated Membranes..........
------------------------------------------------------------------------
Note: Italicized technologies are those predicted to be used in the
  compliance forecast.

Source: Exhibits 5.11b and 5.14b, USEPA 2005a.

    6. On page 435, in Table IV.K-2, in column H, in the second line, 
``9'' should read ``0''.
    7. On page 464, in Table VI.K-1, in the ``Notes:'', in the third 
line, ``established exposure'' should read ``established between 
exposure''.


Sec.  9.1  [Corrected]

    8. On page 477, in Sec.  9.1, in the third column, in the table 
National Primary Drinking Water Regulations Implementation, under ``OMB 
control No.'', in the first line, ``2040-0265'' should read ``2040-
0205''.


Sec.  141.620  [Corrected]

    9. On page 489, in Sec.  141.620(c), in the table, in the first 
column, in entry (4), ``System serving > 10,000'' should read ``System 
serving <  10,000''.

[FR Doc. C6-3 Filed 1-26-06; 8:45 am]

BILLING CODE 1505-01-D
