[Federal Register Volume 77, Number 127 (Monday, July 2, 2012)]
[Rules and Regulations]
[Pages 39182-39183]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: C1-2012-9978]


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

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 141 and 142

[Docket No. EPA-HQ-OW-2009-0090; FRL-9660-4]
RIN 2040-AF10


Revisions to the Unregulated Contaminant Monitoring Regulation 
(UCMR 3) for Public Water Systems

Correction

    In rule document 2012-9978 appearing on pages 26072-26101 in the 
issue of Wednesday, May 2, 2012, make the following correction:
    On pages 26072-26073, the table entitled ``EXHIBIT 1--APPLICABILITY 
OF UCMR 3 TO WATER UTILITIES BY SYSTEM TYPE AND SIZE'' should read as 
set forth below:

Exhibit 1--Applicability of UCMR 3 to Water Utilities by System Type and
                                  Size
------------------------------------------------------------------------
                                            System size \1\
                             -------------------------------------------
         System Type           Serving 
                                     10,000           Serving <= 10,000
------------------------------------------------------------------------
                      UCMR 3 Assessment Monitoring
------------------------------------------------------------------------
CWS & NTNCWS................  Requires all systems  Requires 800
                               to monitor for List   randomly selected
                               1 chemicals.          systems to monitor
                                                     for List 1
                                                     chemicals. EPA will
                                                     pay for the
                                                     analysis of
                                                     samples.
TNCWS.......................  No requirements.....  No Requirements.
------------------------------------------------------------------------
                         UCMR 3 Screening Survey
------------------------------------------------------------------------
CWS & NTNCWS................  Requires all systems  Requires 480
                               serving more than     randomly selected
                               100,000, and 320      systems to monitor
                               randomly selected     for List 2
                               systems serving       chemicals. EPA will
                               10,001 to 100,000     pay for the
                               to monitor for List   analysis of
                               2 chemicals.          samples.
TNCWS.......................  No requirements.....  No Requirements.
------------------------------------------------------------------------
                        UCMR 3 Pre-Screen Testing
------------------------------------------------------------------------
CWS, TNCWS & NTNCWS.........  No requirements.....  Requires 800
                                                     randomly selected
                                                     systems to permit
                                                     EPA to sample and
                                                     analyze List 3
                                                     microbes. The
                                                     selected systems
                                                     will be served by
                                                     non-disinfecting
                                                     ground water wells
                                                     in vulnerable
                                                     areas. EPA will pay
                                                     for the analysis of
                                                     samples.
------------------------------------------------------------------------
\1\ Based on the retail population, as indicated by SDWIS/Fed on
  December 31, 2010.


[[Page 39183]]

[FR Doc. C1-2012-9978 Filed 6-29-12; 8:45 am]
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