Current through Register Vol. 48, No. 38, September 20, 2024
a) A supplier must
report sampling schedules under Section
611.1002
and source water monitoring results under Section
611.1006
unless it notifies the Agency that it will not conduct source water monitoring
because the supplier meets the criteria of Section
611.1001(d).
b) A supplier must report the use of
uncovered finished water storage facilities to the Agency, as described in
Section
611.1014.
c) A filtered system supplier must report its
Cryptosporidium bin classification, as described in Section
611.1010.
d) An unfiltered system supplier must report
its mean source water Cryptosporidium level, as described in Section
611.1012.
e) A supplier must report disinfection
profiles and benchmarks to the Agency, as described in Sections
611.1008
and
611.1009,
prior to making a significant change in disinfection practice.
f) A supplier must report to the Agency in
accordance with subsections (f)(1) through (f)(15) for any microbial toolbox
options used to comply with treatment requirements under Section
611.1011
or Section 611.1012. Alternatively, the Agency may, by a SEP, approve a
supplier to certify operation within required parameters for treatment credit
rather than reporting monthly operational data for toolbox options.
1) A supplier that uses the watershed control
program toolbox option must submit the following information on the indicated
schedule:
A) A notice of intention to develop
a new or continue an existing watershed control program no later than two years
before the applicable treatment compliance date in Section
611.1013;
B) A watershed control plan no later than one
year before the applicable treatment compliance date in Section
611.1013;
C) An annual watershed
control program status report every 12 months, beginning one year after the
applicable treatment compliance date in Section 611.1013; and
D) A watershed sanitary survey report: for a
CWS supplier, every three years beginning three years after the applicable
treatment compliance date in Section
611.1013
or, for a non-CWS supplier, every five years beginning five years after the
applicable treatment compliance date in Section 611.1013.
2) A supplier that uses the alternative
source or intake management toolbox option must submit verification that it has
relocated the intake or adopted the intake withdrawal procedure reflected in
monitoring results no later than the applicable treatment compliance date in
Section 611.1013.
3) A supplier
that uses the presedimentation toolbox option must submit monthly verification
of the information set forth in each of subsections (f)(3)(A) through
(f)(3)(D), subject to the limitations of subsection (f)(3)(E).
A) Continuous basin operation;
B) Treatment of 100% of the flow;
C) Continuous addition of a coagulant;
and
D) At least 0.5 -log mean
reduction of influent turbidity or compliance with alternative Agency-approved
performance criteria.
E) Monthly
reporting must occur within 10 days following the month in which the monitoring
was conducted, beginning on the applicable treatment compliance date in Section
611.1013.
4) A supplier
that uses the two-stage lime softening toolbox option must submit monthly
verification of the information set forth in each of subsections (f)(4)(A) and
(f)(4)(B), subject to the limitations of subsection (f)(4)(C).
A) That chemical addition and hardness
precipitation occurred in two separate and sequential softening stages prior to
filtration; and
B) That both stages
treated 100% of the plant flow.
C)
Monthly reporting must occur within 10 days following the month in which the
monitoring was conducted, beginning on the applicable treatment compliance date
in Section 611.1013.
5)
A supplier that uses the bank filtration toolbox option must submit the
following information on the indicated schedule:
A) An initial demonstration of the following
no later than the applicable treatment compliance date in Section 611.1013:
i) The existence of unconsolidated,
predominantly sandy aquifer; and
ii) A setback distance of at least 25 ft.
(0.5-log credit) or 50 ft. (1.0 -log credit).
B) If the monthly average of daily maximum
turbidity is greater than 1 NTU, then the supplier must report that result and
submit an assessment of the cause within 30 days following the month in which
the monitoring was conducted, beginning on the applicable treatment compliance
date in Section 611.1013.
6) A supplier that uses the combined filter
performance toolbox option must submit monthly verification of combined filter
effluent (CFE) turbidity levels less than or equal to 0.15 NTU in at least 95
percent of the four-hour CFE measurements taken each month. Monthly reporting
must occur within 10 days following the month in which the monitoring was
conducted, beginning on the applicable treatment compliance date in Section
611.1013.
7) A supplier that uses
the individual filter performance toolbox option must submit monthly
verification of the information set forth in each of subsections (f)(7)(A) and
(f)(7)(B), subject to the limitations of subsection (f)(7)(C).
A) That individual filter effluent (IFE)
turbidity levels were less than or equal to 0.15 NTU in at least 95 percent of
samples each month in each filter; and
B) That no individual filter measured greater
than 0.3 NTU in two consecutive readings 15 minutes apart.
C) Monthly reporting must occur within 10
days following the month in which the monitoring was conducted, beginning on
the applicable treatment compliance date in Section 611.1013.
8) A supplier that uses the
demonstration of performance toolbox option must submit the information set
forth in each of subsections (f)(8)(A) and (f)(8)(B) on the indicated schedule:
A) Results from testing following an
Agency-approved protocol no later than the applicable treatment compliance date
in Section 611.1013; and
B) As
required by the Agency, monthly verification of operation within conditions of
Agency approval for demonstration of performance credit within 10 days
following the month in which monitoring was conducted, beginning on the
applicable treatment compliance date in Section 611.1013.
9) A supplier that uses the bag filters and
cartridge filters toolbox option must submit the information set forth in each
of subsections (f)(9)(A) and (f)(9)(B) on the indicated schedule:
A) A demonstration, no later than the
applicable treatment compliance date in Section 611.1013, that the following
criteria are met:
i) It must demonstrate that
the process meets the definition of bag or cartridge filtration; and
ii) It must demonstrate that the removal
efficiency established through challenge testing that meets criteria in this
Subpart Z; and
B)
Monthly verification, within 10 days following the month in which monitoring
was conducted, beginning on the applicable treatment compliance date in Section
611.1013, that 100% of plant flow was filtered.
10) A supplier that uses the membrane
filtration toolbox option must submit the following information on the
indicated schedule:
A) Results of
verification testing no later than the applicable treatment compliance date in
Section
611.1013
that demonstrate the following:
i) It must
demonstrate that the removal efficiency established through challenge testing
that meets criteria set forth in this Subpart Z; and
ii) It must demonstrate the integrity test
method and parameters, including resolution, sensitivity, test frequency,
control limits, and associated baseline; and
B) A monthly report within 10 days following
the month in which monitoring was conducted, beginning on the applicable
treatment compliance date in Section 611.1013, that summarizes the following:
i) It must summarize all direct integrity
tests above the control limit; and
ii) If applicable, it must summarize any
turbidity or alternative Agency-approved indirect integrity monitoring results
triggering direct integrity testing and the corrective action that was
taken.
11) A
supplier that uses the second stage filtration toolbox option must submit
monthly verification within 10 days following the month in which monitoring was
conducted, beginning on the applicable treatment compliance date in Section
611.1013, that 100% of flow was filtered through both stages and that first
stage was preceded by coagulation step.
12) A supplier that uses the slow sand
filtration (as secondary filter) toolbox option must submit monthly
verification within 10 days following the month in which monitoring was
conducted, beginning on the applicable treatment compliance date in Section
611.1013, that both a slow sand filter and a preceding separate stage of
filtration treated 100% of flow from Subpart B sources.
13) A supplier that uses the chlorine dioxide
toolbox option must submit a monthly summary of CT values for each day within
10 days following the month in which monitoring was conducted, beginning on the
applicable treatment compliance date in Section 611.1013, as described in
Section
611.1020.
14) A supplier that uses the ozone toolbox
option must submit a monthly summary of CT values for each day within 10 days
following the month in which monitoring was conducted, beginning on the
applicable treatment compliance date in Section 611.1013, as described in
Section 611.1020.
15) A supplier
that uses the UV toolbox option must submit the following information on the
indicated schedule:
A) Validation test
results no later than the applicable treatment compliance date in Section
611.1013, that demonstrate operating conditions that achieve required UV
dose.
B) A monthly report
summarizing the percentage of water entering the distribution system that was
not treated by UV reactors operating within validated conditions for the
required dose within 10 days following the month in which monitoring was
conducted, beginning on the applicable treatment compliance date in Section
611.1013, as specified in Section
611.1020(d).
BOARD NOTE: Derived from
40 CFR
141.721 (2016).