S.C. Code Regs. 61-58.14.B - General Requirements
(1) The
requirements of this part R.61-58.14 constitute national
primary drinking water regulations. The regulations in this part establish
monitoring and other requirements for identifying compliance monitoring
locations specified in R.61-58.15 for determining
compliance with maximum contaminant levels for total trihalomethanes (TTHM) and
haloacetic acids (five)(HAA5). Public water systems must use an Initial
Distribution System Evaluation (IDSE) to determine locations with
representative high TTHM and HAA5 concentrations throughout their distribution
system. IDSEs are used in conjunction with, but separate from, R.61-58.13 compliance
monitoring, to identify and select R.61-58.15 compliance monitoring
locations.
(2) Schedule - Systems
subject to this part must comply with the requirements of this part on the
following schedule:
(a) For systems that are
not part of a combined distribution system and systems that serve the largest
population in the combined distribution system and serve 100,000 people or
greater:
(i) The standard monitoring plan or
system specific study or 40/30 certification must be submitted to the
Department by October 1, 2006.
(ii)
The standard monitoring or system specific study must be completed by September
30, 2008.
(iii) The IDSE report
must be submitted to the Department by January 1, 2009.
(iv) If, within 12 months after the date
identified in paragraph 2(a)(i) of this section, the Department does not
approve the submitted plan or notify the system that it has not yet completed
its review, the submitted plan may be considered approved and the system must
complete standard monitoring or a system specific study no later than the date
identified in paragraph (2)(a)(ii) of this section.
(v) If, within 3 months after the date
identified in R.61-58.14. (2)(a)(iii), the Department does not approve the
submitted IDSE report or notify the system that it has not yet completed its
review, the submitted report may be considered approved and the system must
implement the IDSE recommended monitoring in accordance with
R.61-58.15.
(vi) If a system
chooses to submit a 40/30 certification, it must be in accordance with
R.61-58.14.E.
(b) For
systems that are not part of a combined distribution system and systems that
serve the largest population in the combined distribution system and serve
between 50,000 and 99,999 people:
(i) The
standard monitoring plan or system specific study or a 40/30 certification must
be submitted to the Department by April 1, 2007.
(ii) The standard monitoring or system
specific study must be completed by March 31, 2009.
(iii) The IDSE report must be submitted to
the Department by July 1, 2009.
(iv) If, within 12 months after the date
identified in paragraph 2(b)(i) of this section, the Department does not
approve the submitted plan or notify the system that it has not yet completed
its review, the submitted plan may be considered approved and the system must
complete standard monitoring or a system specific study no later than the date
identified in paragraph (2)(b)(ii) of this section.
(v) If, within 3 months after the date
identified in R.61-58.14.B(2)(b)(iii), the Department does not approve the
submitted IDSE report or notify the system that it has not yet completed its
review, the submitted report may be considered approved and the system must
implement the IDSE recommended monitoring in accordance with
R.61-58.15.
(vi) If a system
chooses to submit a 40/30 certification, it must be in accordance with
R.61-58.14.E.
(c) For
systems that are not part of a combined distribution system and systems that
serve the largest population in the combined distribution system and serve
between 10,000 and 49,999 people:
(i) The
standard monitoring plan or system specific study or 40/30 certification must
be submitted to the Department by October 1, 2007.
(ii) The standard monitoring or system
specific study must be completed by September 30, 2009.
(iii) The IDSE report must be submitted to
the Department by January 1, 2010.
(iv) If, within 12 months after the date
identified in paragraph 2(c)(i) of this section, the Department does not
approve the submitted plan or notify the system that it has not yet completed
its review, the submitted plan may be considered approved and the system must
complete standard monitoring or a system specific study no later than the date
identified in paragraph (2)(c)(ii) of this section.
(v) If, within 9 months after the date
identified in R.61-58.14.B(2)(c)(iii), the Department does not approve the
submitted IDSE report or notify the system that it has not yet completed its
review, the submitted report may be considered approved and the system must
implement the IDSE recommended monitoring in accordance with
R.61-58.15.
(vi) If a system
chooses to submit a 40/30 certification, it must be in accordance with
R.61-58.14.E.
(d) For
systems that are not part of a combined distribution system and systems that
serve the largest population in the combined distribution system and serve less
than 10,000 people:
(i) The standard
monitoring plan or system specific study or 40/30 certification must be
submitted to the Department by April 1, 2008 or a very small system waiver must
be granted by the Department by April 1, 2008.
(ii) The standard monitoring or system
specific study must be completed by March 31, 2010.
(iii) The IDSE report must be submitted to
the Department by July 1, 2010.
(iv) If, within 12 months after the date
identified in paragraph 2(d)(i) of this section, the Department does not
approve the submitted plan or notify the system that it has not yet completed
its review, the submitted plan may be considered approved and the system must
complete standard monitoring or a system specific study no later than the date
identified in paragraph (2)(d)(ii) of this section.
(v) If, within 3 months after the date
identified in R.61-58.14.B(2)(d)(iii), the Department does not approve the
submitted IDSE report or notify the system that it has not yet completed its
review, the submitted report may be considered approved and the system must
implement the IDSE recommended monitoring in accordance with
R.61-58.15.
(vi) If a system
chooses to submit a 40/30 certification, it must be in accordance with
R.61-58.14.E.
(e) For
systems that are part of a combined distribution system
(i) The standard monitoring plan or system
specific study or 40/30 certification must be submitted to the Department at
the same time as the system in the combined distribution system with the
earliest compliance date.
(ii) The
standard monitoring or system specific study must be completed at the same time
as the system in the combined distribution system with the earliest compliance
date.
(iii) The IDSE report must be
submitted to the Department at the same time as the system in the combined
distribution system with the earliest compliance date.
(iv) If, within 12 months after the date
which is determined by the criteria specified in paragraph 2(e)(i) of this
section, the Department does not approve the submitted plan or notify the
system that it has not yet completed its review, the submitted plan may be
considered approved and the system must complete standard monitoring or a
system specific study no later than the date which is determined by the
criteria specified in paragraph (2)(e)(ii) of this section.
(v) If, within 3 months after the date
identified in R.61-58.14.B(2)(e)(iii), the Department does not approve the
submitted IDSE report or notify the system that it has not yet completed its
review, the submitted report may be considered approved and the system must
implement the IDSE recommended monitoring in accordance with
R.61-58.15.
(vi) If a system
chooses to submit a 40/30 certification, it must be in accordance with
R.61-58.14.E.
(3) For the purpose of the schedule in this
section, the Department may determine that the combined distribution system
does not include certain consecutive systems based on factors such as receiving
water from a wholesale system only on an emergency basis or receiving only a
small percentage and small volume of water from a wholesale system. The
Department may also determine that the combined distribution system does not
include certain wholesale systems based on factors such as delivering water to
a consecutive system only on an emergency basis or delivering only a small
percentage and small volume of water to a consecutive system.
(4) Systems must conduct standard monitoring
that meets the requirements in R.61-58.14.C,
or a system specific study that meets the requirements in R.61-58.14.D,
or certify to the Department that the system meets 40/30 certification criteria
under R.61-58.14.E,
or qualify for a very small system waiver under R.61-58.14.F.
(a) Systems must have taken the full
complement of TTHM and HAA5 compliance samples required under R.61-58.13 during
the period specified in R.61-58.14.E(1)
to meet the 40/30 certification criteria in R.61-58.14.E.
The system must have taken TTHM and HAA5 samples under R.61-58.13 to be
eligible for the very small system waiver in R.61-58.14.F.
(b) Systems that have not taken the required
samples must conduct standard monitoring that meets the requirements in
R.61-58.14.C,
or a system specific study that meets the requirements in
R.61-58.14.D.
(5) All
analyses used to determine compliance with the requirements in R.61-58.14 must
be conducted using only the analytical methods specified in
40 CFR
141.131, or otherwise approved by EPA for
monitoring under 40 CFR 141 subpart U.
(6) IDSE results will not be used for the
purpose of determining compliance with MCLs in R.61-58.5.P.
Notes
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