Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act; Analysis and Sampling Procedures, 46839-46848 [2016-16516]
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46839
Federal Register / Vol. 81, No. 138 / Tuesday, July 19, 2016 / Rules and Regulations
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 141
[EPA–HQ–OW–2016–0281; FRL–9948–54–
OW]
Expedited Approval of Alternative Test
Procedures for the Analysis of
Contaminants Under the Safe Drinking
Water Act; Analysis and Sampling
Procedures
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
This action announces the
U.S. Environmental Protection Agency’s
(EPA’s) approval of alternative testing
methods for use in measuring the levels
of contaminants in drinking water and
determining compliance with national
primary drinking water regulations. The
Safe Drinking Water Act authorizes EPA
to approve the use of alternative testing
methods through publication in the
Federal Register. EPA is using this
streamlined authority to make 16
additional methods available for
analyzing drinking water samples. This
expedited approach provides public
water systems, laboratories, and
primacy agencies with more timely
access to new measurement techniques
SUMMARY:
and greater flexibility in the selection of
analytical methods, thereby reducing
monitoring costs while maintaining
public health protection.
DATES: This action is effective July 19,
2016.
ADDRESSES: The EPA has established a
docket for this action under Docket ID
No. EPA–HQ–2016–0281. All
documents in the docket are listed on
the https://www.regulations.gov Web
site. Although listed in the index, some
information is not publicly available,
e.g., CBI or other information whose
disclosure is restricted by statute.
Certain other material, such as
copyrighted material, is not placed on
the Internet and will be publicly
available only in hard copy form.
Publicly available docket materials are
available electronically through https://
www.regulations.gov.
FOR FURTHER INFORMATION CONTACT: The
Safe Drinking Water Hotline (800) 426–
4791 or Glynda Smith, Technical
Support Center, Standards and Risk
Management Division, Office of Ground
Water and Drinking Water (MS 140),
Environmental Protection Agency, 26
West Martin Luther King Drive,
Cincinnati, OH 45268; telephone
number: (513) 569–7652; email address:
smith.glynda@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
A. Does this action apply to me?
Public water systems are the regulated
entities required to measure
contaminants in drinking water
samples. In addition, EPA Regions as
well as states and tribal governments
with authority to administer the
regulatory program for public water
systems under the Safe Drinking Water
Act (SDWA) may measure contaminants
in water samples. When EPA sets a
monitoring requirement in its national
primary drinking water regulations for a
given contaminant, the Agency also
establishes in the regulations
standardized test procedures for
analysis of the contaminant. This action
makes alternative testing methods
available for particular drinking water
contaminants beyond the testing
methods currently established in the
regulations. EPA is providing public
water systems required to test water
samples with a choice of using either a
test procedure already established in the
existing regulations or an alternative test
procedure that has been approved in
this action or in prior expedited
approval actions. Categories and entities
that may ultimately be affected by this
action include:
NAICS 1
Category
Examples of potentially regulated entities
State, local, & tribal governments.
State, local and tribal governments that analyze water samples on behalf of public water systems
required to conduct such analysis; state, local and tribal governments that directly operate
community and non-transient non-community water systems required to monitor.
Private operators of community and non-transient non-community water systems required to
monitor.
Municipal operators of community and non-transient non-community water systems required to
monitor.
Industry ...............................
Municipalities ......................
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1 North
924110
221310
924110
American Industry Classification System.
This table is not intended to be
exhaustive, but rather provides a guide
for readers regarding entities likely to be
affected by this action. This table lists
the types of entities that EPA is now
aware could potentially be affected by
this action. Other types of entities not
listed in the table could also be
impacted. To determine whether your
facility is affected by this action, you
should carefully examine the
applicability language in the Code of
Federal Regulations (CFR) at 40 CFR
141.2 (definition of public water
system). If you have questions regarding
the applicability of this action to a
particular entity, consult the person
listed in the preceding FOR FURTHER
INFORMATION CONTACT section.
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Abbreviations and Acronyms Used in
This Action
APHA: American Public Health Association
ATP: Alternate Test Procedure
CFR: Code of Federal Regulations
DPD: N,N-diethyl-p-phenylenediamine
EPA: United States Environmental Protection
Agency
LED: Light Emitting Diode
NAICS: North American Industry
Classification System
NEMI: National Environmental Methods
Index
NTU: Nephelometric Turbidity Unit
QC: Quality Control
SDWA: The Safe Drinking Water Act
TOC: Total Organic Carbon
VCSB: Voluntary Consensus Standard Bodies
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II. Background
A. What is the purpose of this action?
In this action, EPA is approving 16
analytical methods for determining
contaminant concentrations in drinking
water samples collected under SDWA.
Regulated parties required to sample
and monitor may use either the testing
methods already established in existing
regulations or the alternative testing
methods being approved in this action
or in prior expedited approval actions.
The new methods are listed along with
other methods similarly approved
through previous expedited actions in
40 CFR part 141, appendix A to subpart
C and on EPA’s drinking water methods
Web site at https://www.epa.gov/
dwanalyticalmethods.
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B. What is the basis for this action?
When EPA determines that an
alternative analytical method is
‘‘equally effective’’ (i.e., as effective as a
method that has already been
promulgated in the regulations), SDWA
allows EPA to approve the use of the
alternative method through publication
in the Federal Register (see Section
1401(1) of SDWA). EPA is using this
streamlined approval authority to make
16 additional methods available for
determining contaminant
concentrations in drinking water
samples collected under SDWA. EPA
has determined that, for each
contaminant or group of contaminants
listed in Section III, the additional
testing methods being approved in this
action are as effective as one or more of
the testing methods already approved in
the regulations for those contaminants.
Section 1401(1) of SDWA states that the
newly approved methods ‘‘shall be
treated as an alternative for public water
systems to the quality control and
testing procedures listed in the
regulation.’’ Accordingly, this action
makes these additional 16 analytical
methods legally available as options for
meeting EPA’s monitoring requirements.
This action does not add regulatory
language, but does, for informational
purposes, update an appendix to the
regulations at 40 CFR part 141 that lists
all methods approved under Section
1401(1) of SDWA. Accordingly, while
this action is not a rule, it is updating
CFR text and therefore is being
published in the ‘‘Final Rules’’ section
of the Federal Register.
III. Summary of Approvals
EPA is approving 16 methods that are
equally effective relative to methods
previously promulgated in the
regulations. By means of this rule, these
16 methods are added to appendix A to
subpart C of 40 CFR part 141.
A. Methods developed by Voluntary
Consensus Standard Bodies (VCSB)
International methods to the earlier
versions of those methods that are
currently approved in 40 CFR part 141.
Changes between the earlier approved
version and the most recent version of
each method are summarized in Smith
(2015). The revisions primarily involve
editorial changes (e.g., updated
references, definitions, terminology,
procedural clarifications, and
reorganization of text). The revised
methods are the same as the approved
versions with respect to sample
collection and handling protocols,
sample preparation, analytical
methodology, and method performance
data; thus, EPA finds they are equally
effective relative to the approved
methods.
EPA is thus approving the use of the
following ASTM methods for the
contaminants and their respective
regulations listed in the following table:
ASTM International. EPA compared
the most recent versions of seven ASTM
ASTM revised version
Approved method
Contaminant
Regulation
D 1253–14 (ASTM 2014a) .............
D 1253–03 (ASTM 2003a) ...........
Free Chlorine; Total Chlorine .......
D
D
D
D
D
D
D
D
D
D
D
D
D
D
Combined Chlorine .......................
Conductivity ..................................
Calcium; Magnesium ....................
Calcium; Magnesium ....................
Copper ..........................................
Copper ..........................................
Antimony .......................................
40 CFR 141.74(a)(2); 40 CFR
141.131(c)(1).
40 CFR 141.131(c)(1).
40 CFR 141.23(k)(1).
40 CFR 141.23(k)(1).
40 CFR 141.23(k)(1).
40 CFR 141.23(k)(1).
40 CFR 141.23(k)(1).
40 CFR 141.23(k)(1).
1253–14 (ASTM 2014a) .............
1125–14 A (ASTM 2014b) .........
511–14 A (ASTM 2014c) ...........
511–14 B (ASTM 2014c) ...........
1688–12 A (ASTM 2012a) .........
1688–12 C (ASTM 2012a) .........
3697–12 (ASTM 2012b) .............
1253–03 (ASTM 2003a) ...........
1125–95 A (ASTM 1995) ..........
511–03 A (ASTM 2003b) ..........
511–03 B (ASTM 2003b) ..........
1688–02 A (ASTM 2002a) ........
1688–02 C (ASTM 2002a) .......
3697–02 (ASTM 2002b) ...........
The ASTM methods are available
from ASTM International, 100 Barr
Harbor Drive, West Conshohocken, PA
19428–2959 or https://www.astm.org.
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B. Methods Developed by Vendors
1. Hach Method 10241—
Spectrophotometric Measurement of
Free Chlorine (Cl2) in Finished Drinking
Water (Hach Company 2015a). In Hach
Method 10241, free chlorine is
converted to monochloramine by
addition of an ammonia solution to a
drinking water sample. In the presence
of a cyanoferrate catalyst,
monochloramine reacts with a
substituted phenol to form an
intermediate monoamine compound.
The intermediate monoamine
compound couples with excess
substituted phenol to form a green
indophenol compound.
Spectrophotometric measurement of
absorbance at 655 nm (610 nm for
colorimeters) is directly proportional to
the concentration of free chlorine in the
sample.
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The currently approved methods for
free chlorine in drinking water are listed
in the tables at 40 CFR 141.74(a)(2) and
40 CFR 141.131(c)(1). One of the most
widely used approved methods is
Standard Method 4500-Cl G–00 (APHA
2000a), which uses a N,N-diethyl-pphenylenediamine (DPD) indicator for
spectrophotometric determination of
residual chlorine concentrations in
drinking water. The DPD methodology
can be subject to interferences
associated with the presence of
manganese, chloramines, and other
oxidants. Hach Method 10241 is not
subject to such interferences.
A multi-laboratory study compared
the performance characteristics of Hach
Method 10241 to the performance
characteristics of the approved Standard
Method 4500-Cl G–00. A variety of
samples, including drinking water
samples from both surface water and
ground water sources, were fortified
with known chlorine concentrations
and analyzed by each method. The
results are summarized in the validation
study report (Hach Company 2015b).
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EPA has determined that Hach Method
10241 is equally as effective as the
approved Standard Method 4500-Cl G–
00. The basis for this determination is
discussed in Adams and Smith (2016).
Therefore, EPA is approving Hach
Method 10241 for determining free
chlorine concentrations in drinking
water. Hach Method 10241 can be
obtained from Hach Company, 5600
Lindbergh Drive, Loveland, Colorado
80539. (https://www.hach.com.)
2. Hach Method 8026—
Spectrophotometric Measurement of
Copper in Finished Drinking Water
(Hach Company 2015c). In Hach
Method 8026, cuprous copper is
measured colorimetrically by
complexation with bicinchoninic acid.
The intensity in color is proportional to
the copper concentration, and
spectrophotometer measurements are
taken at 560 nm. Cupric copper present
in samples is chemically reduced to
cuprous copper. Metal and hardness
interferences in samples are mitigated
through the use of a chelating agent. The
method is performed by the addition of
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powder pillows containing reagents to
the water samples.
The currently approved methods for
the analysis of copper in drinking water
are listed in the table at 40 CFR
141.23(k)(1). The approved methods are
based on atomic spectroscopy
technologies. Hach Method 8026
employs a spectrophotometer, and is
based on known complexation
principles and simple color/absorbance
measurements to determine copper
concentrations.
A multi-laboratory validation study
was conducted to compare the
performance of Hach Method 8026 to
EPA Method 200.7 (USEPA 1994), one
of the approved methods for the
analysis of copper in drinking water.
Multiple finished drinking water
samples drawn from both ground water
and surface water sources were used in
the validation study. Precision, accuracy
and sensitivity data were collected by
analyzing drinking water samples
fortified with varying concentrations of
copper standards. The results are
summarized in the validation study
report (Hach Company 2015d). EPA has
determined that Hach Method 8026 is
equally as effective as the approved EPA
Method 200.7. The basis for this
determination is discussed in Adams
and Smith (2016). Therefore, EPA is
approving Hach Method 8026 for the
analysis of copper in drinking water.
Hach Method 8026 can be obtained from
Hach Company, 5600 Lindbergh Drive,
Loveland, Colorado 80539. (https://
www.hach.com).
3. Hach Method 10261—Total Organic
Carbon in Finished Drinking Water by
Catalyzed Ozone Hydroxyl Radical
Oxidation Infrared Analysis (Hach
Company 2015e). Hach Method 10261 is
a method for the determination of total
organic carbon (TOC) in drinking water
using an advanced oxidation process
and non-dispersive infrared
spectroscopy. In this method, ozone and
a base are added to water to produce
hydroxyl radicals. The hydroxyl
radicals oxidize organic carbon to
produce carbon dioxide and sodium
oxalate. The sodium oxalate is further
oxidized to carbon dioxide using
acidification and a manganese catalyst.
The carbon dioxide produced by both
oxidation processes is then measured
using non-dispersive infrared
spectroscopy.
The currently approved methods for
the analysis of TOC in drinking water
are listed in 40 CFR 141.131(d)(3). The
approved oxidation method, Standard
Method 5310 C–00 (APHA 2000b), may
not completely oxidize certain organic
compounds. Hach Method 10261 uses a
more efficient advanced oxidation
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process to ensure more complete
oxidation.
A multi-laboratory validation study
was conducted to compare the
performance of Hach Method 10261 to
the approved Standard Method 5310
C–00. Multiple finished drinking water
samples drawn from both ground water
and surface water sources were used in
the validation study. Precision, accuracy
and sensitivity data were collected by
analyzing drinking water samples
fortified with varying concentrations of
TOC. The results are summarized in the
validation study report (Hach Company
2015f). EPA has determined that Hach
Method 10261 is equally as effective as
the approved Standard Method 5310 C–
00. The basis for this determination is
discussed in Adams and Smith (2016).
Therefore, EPA is approving Hach
Method 10261 for the analysis of TOC
in drinking water. Hach Method 10261
can be obtained from Hach Company,
5600 Lindbergh Drive, Loveland,
Colorado 80539. (https://
www.hach.com).
4. Hach Method 10267—
Spectrophotometric Measurement of
Total Organic Carbon (TOC) in Finished
Drinking Water (Hach Company 2015g).
Hach Method 10267 is used for the
determination of TOC in drinking water
using acid persulfate digestion and
visible spectrum spectrophotometry. In
this method, samples are oxidized using
acid persulfate digestions to convert
TOC into carbon dioxide. The generated
carbon dioxide is passed through a gaspermeable membrane into an indicator
solution that is measured
spectrophotometrically at 435 nm. Hach
Method 10267 uses pre-packaged
reagents to simplify sample preparation
and quickly perform the analysis.
Interfering inorganic carbon is removed
from the sample prior to digestion by
acidification and agitation.
The currently approved methods for
the analysis of TOC in drinking water
are listed in 40 CFR 141.131(d)(3). A
multi-laboratory validation study was
conducted to compare the performance
of Hach Method 10267 to the approved
Standard Method 5310 C–00 (APHA
200b). Multiple finished drinking water
samples drawn from both ground water
and surface water sources were used in
the validation study. Precision, accuracy
and sensitivity data were collected by
analyzing drinking water samples
fortified with varying concentrations of
TOC. The results are summarized in the
validation study report (Hach Company
2015h). EPA has determined that Hach
Method 10267 is equally as effective as
the approved Standard Method 5310
C–00. The basis for this determination is
discussed in Adams and Smith (2016).
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Therefore, EPA is approving Hach
Method 10267 for the analysis of TOC
in drinking water. Hach Method 10267
can be obtained from Hach Company,
5600 Lindbergh Drive, Loveland,
Colorado 80539. (https://
www.hach.com).
5. Hach Method 10272—
Spectrophotometric Measurement of
Copper in Finished Drinking Water
(Hach Company 2015i). In Hach Method
10272, cuprous copper is measured
colorimetrically by complexation with
bicinchoninic acid. The intensity in
color is proportional to the copper
concentration, and spectrophotometer
measurements are taken at 560 nm.
Cupric copper present in samples is
chemically reduced to cuprous copper.
Metal and hardness interferences in
samples are mitigated through the use of
a chelating agent. The method is
performed through the use of a copper
Chemkey and portable analyzer.
The currently approved methods for
the analysis of copper in drinking water
are listed in the table at 40 CFR
141.23(k)(1). The approved methods are
based on atomic spectroscopy
technologies. Hach Method 10272 uses
a spectrophotometer, simple color/
absorbance measurements to determine
copper concentrations, and incorporates
portability and streamlining into the
analysis.
A multi-laboratory validation study
was conducted to compare the
performance of Hach Method 10272 to
EPA Method 200.7 (USEPA 1994), one
of the approved methods for the
analysis of copper in drinking water.
Multiple finished drinking water
samples drawn from both ground water
and surface water sources were used in
the validation study. Precision, accuracy
and sensitivity data were collected by
analyzing drinking water samples
fortified with varying concentrations of
copper standards. The results are
summarized in the validation study
report (Hach Company 2015j). EPA has
determined that Hach Method 10272 is
equally as effective as the approved EPA
Method 200.7. The basis for this
determination is discussed in Adams
and Smith (2016). Therefore, EPA is
approving Hach Method 10272 for the
analysis of copper in drinking water.
Hach Method 10272 can be obtained
from Hach Company, 5600 Lindbergh
Drive, Loveland, Colorado 80539.
(https://www.hach.com).
6. Hach Method 10258—
Determination of Turbidity by 360°
Nephelometry (Hach Company 2016). In
Hach Method 10258 turbidity is
determined in conventional-filtered and
membrane-filtered treated drinking
water using a 360 degree nephelometer.
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In this method, a non-incandescent light
source operates at a wavelength of 660
+ 30 nm and light scattered by the
sample is collected and detected at an
angle 90 degrees to the incident light,
360 degrees around the sample vial.
This design offers improved sensitivity
(minimum quantitation limit of 0.0005
Nephelometric Turbidity Units (NTU)
and resolution (0.0001 NTU) relative to
the approved methods.
The currently approved methods for
the analysis of turbidity in treated
drinking water are listed in the
regulations at 40 CFR 141.74(a)(1). A
multi-facility validation study was
conducted to compare the performance
of Hach Method 10258 to the approved
Hach FilterTrak Method 10133 (Hach
Company 2000) for the analysis of
turbidity in treated drinking water.
Seven public drinking water facilities
participated in the study. Three
facilities produced treated water using
both conventional-filtration and
membrane-filtration, two facilities
produced only conventional-filtration
treated water, and two facilities
produced only membrane-filtration
treated water. Source waters
encompassed both surface waters and
ground waters under the direct
influence of surface water. Turbidity
comparison data were collected at each
facility by operating the instrument
collecting the Hach Method 10258
turbidity data in parallel with an
instrument collecting turbidity data
using the approved Hach FilterTrack
Method 10133. Precision and accuracy
(based on recovery of matrix spike
injections) data were collected over a
range of spike levels (0.0015–0.500
NTU) and calibration verification data
were collected from each facility. The
results are summarized in the validation
study report (Hach Company 2014). EPA
has determined that Hach Method
10258 is equally as effective as the
approved Hach FilterTrak Method
10133. The basis for this determination
is discussed in Adams and Smith
(2016). Therefore, EPA is approving
Hach Method 10258 for the analysis of
turbidity in treated drinking water.
Hach Method 10258 can be obtained
from Hach Company, 5600 Lindbergh
Drive, Loveland, Colorado 80539.
(https://www.hach.com).
7. Nitrate Elimination Company, Inc.
(NECi)—Method for Nitrate Reductase
Nitrate-Nitrogen Analysis of Drinking
Water (NECi 2016a). The NECi nitrate
reductase method is used for the
determination of nitrate plus nitrite (as
nitrogen) in drinking water. In this
method, a eukaryotic nitrate reductase is
used to catalyze the conversion of
nitrate to nitrite in the presence of
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nicotinamide adenine dinucleotide as a
reductant in a buffer with a near neutral
pH. The combined nitrite (both the
original and reduced nitrate) is reacted
with sulfanilamide and N-(1-napthyl)
ethylenediamine dihydrochloride to
produce a chromophore. The combined
nitrite concentration is then measured
spectrophotometrically at ∼540 nm. The
method entails the use of a discrete
analyzer that incorporates a
spectrophotometric detector.
The currently approved methods for
the analysis of nitrate and nitrite in
drinking water are listed in 40 CFR
141.23(k)(1). The approved EPA Method
353.2 (USEPA 1993a) uses cadmium to
reduce nitrate to nitrite and
subsequently measures the combined
nitrite colorimetrically. The NECi
nitrate reductase method provides an
environmentally friendly approach to
nitrate-nitrogen analysis by eliminating
the use of toxic cadmium and requires
only a fraction of the sample volume
used in the approved EPA method.
A multi-laboratory validation study
was conducted to compare the
performance of the NECi nitrate
reductase method to the approved EPA
Method 353.2. Multiple finished
drinking water samples drawn from
both ground water and surface water
sources were used in the validation
study. Precision, accuracy and
sensitivity data were collected by
analyzing drinking water samples
fortified with varying concentrations of
nitrate standards. The results are
summarized in the validation study
report (NECi 2016b). EPA has
determined that the NECi nitrate
reductase method is equally as effective
as the approved EPA Method 353.2. The
basis for this determination is discussed
in Adams and Wendelken (2016).
Therefore, EPA is approving the NECi
nitrate reductase method for the
analysis of nitrate and nitrite in
drinking water. The NECi nitrate
reductase method can be obtained from
the Nitrate Elimination Company, Inc.
(NECi) at Superior Enzymes, Inc., 334
Hecla St., Lake Linden, Michigan 49945.
8. Thermo Fisher Scientific Drinking
Water Orthophosphate Method for
Thermo Scientific Gallery Discrete
Analyzer (Thermo Fisher 2016a). The
Thermo Fisher orthophosphate drinking
water method employing Thermo
Scientific Gallery discrete analyzers is
used for the colorimetric determination
of orthophosphate in drinking water. In
this method, orthophosphate is reacted
with ammonium molybdate and
antimony potassium tartrate in an acidic
medium to form an antimony-phosphomolybdate complex. The complex is
subsequently reduced by ascorbic acid
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to form an intensely blue complex that
can be measured spectrophotometrically
at 880 nm.
The currently approved methods for
the analysis of orthophosphate in
drinking water are listed in 40 CFR
141.23(k)(1). Standard Methods 4500–P
E (APHA, 1995) is an approved method
that uses ascorbic acid to reduce reacted
orthophosphate into a complex that can
be measured spectrophotometrically.
The Thermo Fisher orthophosphate
method incorporates an automated
discrete analyzer, which minimizes the
use of chemical reagents, generation of
waste and human handling errors.
A validation study was conducted to
compare the performance of the
automated Thermo Fisher
orthophosphate discrete analyzer
method to the approved Standard
Method 4500–P E. Multiple finished
drinking water samples drawn from
both ground water and surface water
sources were used in the validation
study. Precision, accuracy and
sensitivity data were collected by
analyzing drinking water samples
fortified with varying concentrations of
orthophosphate standards. The results
are summarized in the validation study
report (Thermo Fisher 2016b). EPA has
determined that the Thermo Fisher
discrete analyzer method for
orthophosphate is equally as effective as
the approved Standard Method 4500–P
E. Therefore, EPA is approving the
Thermo Fisher method for the analysis
of orthophosphate in treated drinking
water. The basis for this determination
is discussed in Adams (2016). The
Thermo Fisher discrete analyzer method
for orthophosphate can be obtained
from Thermo Fisher Scientific, Ratastie
2, 01620 Vantaa, Finland.
9. Mitchell Method M5331, Revision
1.2—Determination of Turbidity by LED
or Laser Nephelometry (Mitchell 2016).
Mitchell Method M5331, Revision 1.1
(Mitchell 2009) was approved for the
determination of turbidity in drinking
water by light emitting diode (LED)
nephelometry in the August 2009
expedited methods approval action
(USEPA 2009). The currently approved
methods for turbidity are listed in 40
CFR 141.74(a)(1) and different sources,
including lasers, have been approved.
The Mitchell Method M5331 has been
updated to incorporate the option of
using a solid-state laser in place of a
LED as the light source for the
turbidimeter. The vendor cites multiple
advantages associated with the use of
lasers relative to LEDs (Mitchell 2015).
Mitchell Method M5331, Revision 1.1
specifies a light source of 525 ± 15 nm,
and now lasers at 520 nm and 532 nm
are readily available. In addition to
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meeting the specified wavelength range,
solid-state lasers can offer longer source
lifetimes, greater stability, and improved
stray light rejection. The updated
method is the same as the approved
Mitchell Method M5331, Revision 1.1
relative to the divergence of the light
source measurement area, the detector,
and all other instrumental features. EPA
has determined that the updated
method is equally as effective as the
promulgated EPA Method 180.1
(USEPA 1993b), which established the
criteria for nephelometric determination
of turbidity. The basis for this
determination is discussed in
Wendelken and Smith (2016).
Therefore, EPA is approving Mitchell
Method M5331, Revision 1.2 for the
determination of turbidity in drinking
water. Mitchell Method M5331,
Revision 1.2 can be obtained from Leck
Mitchell, Ph.D., PE, 656 Independence
Valley Drive, Grand Junction, Colorado
81507.
IV. Statutory and Executive Order
Reviews
As noted in Section II, under the
terms of SDWA Section 1401(1), this
streamlined method approval action is
not a rule. Accordingly, the
Congressional Review Act, 5 U.S.C. 801
et seq., as added by the Small Business
Regulatory Enforcement Fairness Act of
1996, does not apply because this action
is not a rule for purposes of 5 U.S.C.
804(3). Similarly, this action is not
subject to the Regulatory Flexibility Act
because it is not subject to notice and
comment requirements under the
Administrative Procedure Act or any
other statute. In addition, because this
approval action is not a rule but simply
makes alternative testing methods
available as options for monitoring
under SDWA, EPA has concluded that
other statutes and executive orders
generally applicable to rulemaking do
not apply to this approval action.
ehiers on DSK5VPTVN1PROD with RULES
V. References
Adams. 2016. Memo to the record describing
basis for expedited approval of Thermo
Fisher discrete analyzer method for
orthophosphate. February 18, 2016.
Adams and Smith. 2016. Memo to the record
describing basis for expedited approval
of Hach Company methods. February 29,
2016.
Adams and Wendelken. 2016. Memo to the
record describing basis for expedited
approval of Nitrate Elimination
Company Inc. (NECi) nitrate reductase
method. February 9, 2016.
American Public Health Association (APHA).
1995. 19th Edition of Standard Methods
for the Examination of Water and
Wastewater, American Public Health
Association, 800 I Street NW.,
Washington, DC 20001–3710.
VerDate Sep<11>2014
13:36 Jul 18, 2016
Jkt 238001
American Public Health Association (APHA).
2000a. Standard Method 4500–Cl G–00,
Chlorine (Residual)—DPD Colorimetric
Method. Approved by Standard Methods
Committee 2000. Standard Methods
Online (Available at https://
www.standardmethods.org).
American Public Health Association (APHA).
2000b. Standard Method 5310 C–00,
Total Organic Carbon (TOC)—PersulfateUltraviolet or Heated Persulfate
Oxidation Method. Approved by
Standard Methods Committee 2000.
Standard Methods Online (Available at
https://www.standardmethods.org).
ASTM International. 1995. ASTM D 1125–95
A. Standard Test Methods for Electrical
Conductivity and Resistivity of Water.
ASTM International, 100 Barr Harbor
Drive, West Conshohocken, PA 19428–
2959. (Available at https://www.astm.org.)
ASTM International. 2002a. ASTM D 1688–
02 A, C. Standard Test Methods for
Copper in Water. ASTM International,
100 Barr Harbor Drive, West
Conshohocken, PA 19428–2959.
(Available at https://www.astm.org.)
ASTM International. 2002b. ASTM D 3697–
02. Standard Test Method for Antimony
in Water. ASTM International, 100 Barr
Harbor Drive, West Conshohocken, PA
19428–2959. (Available at https://
www.astm.org.)
ASTM International. 2003a. ASTM D 1253–
03. Standard Test Method for Residual
Chlorine in Water. ASTM International,
100 Barr Harbor Drive, West
Conshohocken, PA 19428–2959.
(Available at https://www.astm.org.)
ASTM International. 2003b. ASTM D 511–03
A, B. Standard Test Methods for Calcium
and Magnesium in Water. ASTM
International, 100 Barr Harbor Drive,
West Conshohocken, PA 19428–2959.
(Available at https://www.astm.org.)
ASTM International. 2012a. ASTM D 1688–
12 A, C. Standard Test Methods for
Copper in Water. ASTM International,
100 Barr Harbor Drive, West
Conshohocken, PA 19428–2959.
(Available at https://www.astm.org.)
ASTM International. 2012b. ASTM D 3697–
12. Standard Test Method for Antimony
in Water. ASTM International, 100 Barr
Harbor Drive, West Conshohocken, PA
19428–2959. (Available at https://
www.astm.org.)
ASTM International. 2014a. ASTM D 1253–
14. Standard Test Method for Residual
Chlorine in Water. ASTM International,
100 Barr Harbor Drive, West
Conshohocken, PA 19428–2959.
(Available at https://www.astm.org.)
ASTM International. 2014b. ASTM D 1125–
14 A. Standard Test Methods for
Electrical Conductivity and Resistivity of
Water. ASTM International, 100 Barr
Harbor Drive, West Conshohocken, PA
19428–2959. (Available at https://
www.astm.org.)
ASTM International. 2014c. ASTM D 511–14
A, B. Standard Test Methods for Calcium
and Magnesium in Water. ASTM
International, 100 Barr Harbor Drive,
West Conshohocken, PA 19428–2959.
(Available at https://www.astm.org.)
PO 00000
Frm 00017
Fmt 4700
Sfmt 4700
46843
Hach Company. 2000. Hach FilterTrak
Method 10133—Determination of
Turbidity by Laser Nephelometry.
January 2000. Revision 2.0. 5600
Lindbergh Drive, Loveland, Colorado
80539. (Available at https://
www.hach.com.)
Hach Company. 2014. Validation Study
Report for Hach Method 10258—
Measurement of Turbidity in Drinking
Water by 360 Degree Nephelometry.
December 2014. 5600 Lindbergh Drive,
Loveland, Colorado 80539. (Available at
https://www.regulations.gov; docket ID
No. EPA–HQ–OW–2016–0281.)
Hach Company. 2015a. Hach Method
10241—Spectrophotometric
Measurement of Free Chlorine (Cl2) in
Finished Drinking Water. November
2015. Revision 1.2. 5600 Lindbergh
Drive, Loveland, Colorado 80539.
(Available at https://www.hach.com.)
Hach Company. 2015b. Validation Study
Report for Hach Method 10241—
Spectrophotometric Measurement of
Free Chlorine in Drinking Water.
November 2015. 5600 Lindbergh Drive,
Loveland, Colorado 80539. (Available at
https://www.regulations.gov; docket ID
No. EPA–HQ–OW–2016–0281.)
Hach Company. 2015c. Hach Method 8026—
Spectrophotometric Measurement of
Copper in Finished Drinking Water.
December 2015. Revision 1.2. 5600
Lindbergh Drive, Loveland, Colorado
80539. (Available at https://
www.hach.com.)
Hach Company. 2015d. Validation Study
Report for Hach Method 8026—
Spectrophotometric Measurement of
Copper in Drinking Water. November
2015. 5600 Lindbergh Drive, Loveland,
Colorado 80539. (Available at https://
www.regulations.gov; docket ID No.
EPA–HQ–OW–2016–0281.)
Hach Company. 2015e. Hach Method
10261—Total Organic Carbon in
Finished Drinking Water by Catalyzed
Ozone Hydroxyl Radical Oxidation
Infrared Analysis. December 2015.
Revision 1.2. 5600 Lindbergh Drive,
Loveland, Colorado 80539. (Available at
https://www.hach.com.)
Hach Company. 2015f. Validation Study
Report for Hach Method 10261—Total
Organic Carbon in Finished Drinking
Water by Catalyzed Ozone Hydroxyl
Radical Oxidation Infrared Analysis.
December 2015. 5600 Lindbergh Drive,
Loveland, Colorado 80539. (Available at
https://www.regulations.gov; docket ID
No. EPA–HQ–OW–2016–0281.)
Hach Company. 2015g. Hach Method
10267—Spectrophotometric
Measurement of Total Organic Carbon
(TOC) in Finished Drinking Water.
December 2015. Revision 1.2. 5600
Lindbergh Drive, Loveland, Colorado
80539. (Available at https://
www.hach.com.)
Hach Company. 2015h. Validation Study
Report for Hach Method 10267—
Spectrophotometric Measurement of
Total Organic Carbon (TOC) in Finished
Drinking Water. December 2015. 5600
Lindbergh Drive, Loveland, Colorado
E:\FR\FM\19JYR1.SGM
19JYR1
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Federal Register / Vol. 81, No. 138 / Tuesday, July 19, 2016 / Rules and Regulations
80539. (Available at https://
www.regulations.gov; docket ID No.
EPA–HQ–OW–2016–0281.)
Hach Company. 2015i. Hach Method 10272—
Spectrophotometric Measurement of
Copper in Finished Drinking Water.
December 2015. Revision 1.2. 5600
Lindbergh Drive, Loveland, Colorado
80539. (Available at https://
www.hach.com.)
Hach Company. 2015j. Validation Study
Report for Hach Method 10272—
Spectrophotometric Measurement of
Copper in Finished Drinking Water.
December 2015. 5600 Lindbergh Drive,
Loveland, Colorado 80539. (Available at
https://www.regulations.gov; docket ID
No. EPA–HQ–OW–2016–0281.)
Hach Company. 2016. Hach Method 10258—
Determination of Turbidity by 360°
Nephelometry. January 2016. 5600
Lindbergh Drive, Loveland, Colorado
80539. (Available at https://
www.hach.com.)
Mitchell, L. and Mitchell, P. 2009. Mitchell
Method M5331—Determination of
Turbidity by LED Nephelometry. March
2009. Revision 1.1. Leck Mitchell, Ph.D.,
PE, 656 Independence Valley Drive,
Grand Junction, CO 81507. (Available at
https://www.regulations.gov; docket ID
No. EPA–HQ–OW–2016–0281.)
Mitchell, L. 2015. Mitchell ATP Submission
with Justification for Revision to
Mitchell Method M5331, Revision 1.1.
September 2015. Leck Mitchell, Ph.D.,
PE, 656 Independence Valley Drive,
Grand Junction, CO 81507. (Available at
https://www.regulations.gov; docket ID
No. EPA–HQ–OW–2016–0281.)
Mitchell, L. and Mitchell, P. 2016. Mitchell
Method M5331—Determination of
Turbidity by LED or Laser
Nephelometry. February 2016. Revision
1.2. Leck Mitchell, Ph.D., PE, 656
Independence Valley Drive, Grand
Junction, CO 81507. (Available at https://
www.regulations.gov; docket ID No.
EPA–HQ–OW–2016–0281.)
Nitrate Elimination Company, Inc. (NECi).
2016a. Method for Nitrate Reductase
Nitrate-Nitrogen Analysis of Drinking
Water. February 2016. Version 1.0.
Revision 2.0. Superior Enzymes, Inc.,
334 Hecla Street, Lake Linden, Michigan
49945. (Available at https://
www.regulations.gov; docket ID No.
EPA–HQ–OW–2016–0281.)
Nitrate Elimination Company, Inc. (NECi).
2016b. Validation Study Report for NECi
Nitrate-Reductase Nitrate plus Nitrite
Nitrogen Method. January 2016. Superior
Enzymes, Inc., 334 Hecla Street, Lake
Linden, Michigan 49945. (Available at
https://www.regulations.gov; docket ID
No. EPA–HQ–OW–2016–0281.)
Smith, G. 2015. Memo to the record
describing basis for expedited approval
of updated methods from ASTM
International. December 30, 2015.
Thermo Fisher. 2016a. Thermo Fisher
Scientific Drinking Water
Orthophosphate Method for Thermo
Scientific Gallery Discrete Analyzer.
February 2016. Revision 5. Thermo
Fisher Scientific, Ratastie 2, 01620
Vantaa, Finland. (Available at https://
www.regulations.gov; docket ID No.
EPA–HQ–OW–2016–0281.)
Thermo Fisher. 2016b. Validation Study
Report for Thermo Fisher
Orthophosphate Discrete Analyzer
Method. February 2016. Thermo Fisher
Scientific, Ratastie 2, 01620 Vantaa,
Finland. (Available at https://
www.regulations.gov; docket ID No.
EPA–HQ–OW–2016–0281.)
USEPA. 1993a. EPA Method 353.2. Revision
2.0, ‘‘Determination of Nitrate-Nitrite
Nitrogen by Automated Colorimetry,’’
August 1993. (Available at https://
www.nemi.gov.)
USEPA. 1993b. EPA Method 180.1. Revision
2.0, ‘‘Determination of Turbidity by
Nephelometry,’’ August 1993. (Available
at https://www.nemi.gov.)
USEPA. 1994. EPA Method 200.7. Revision
4.4, ‘‘Determination of Metals and Trace
Elements in Water and Wastes by
Inductively Coupled Plasma-Atomic
Emission Spectrometry,’’ May 1994.
(Available at https://www.nemi.gov.)
USEPA. 2009. Expedited Approval of
Alternative Test Procedures for the
Analysis of Contaminants Under the Safe
Drinking Water Act; Analysis and
Sampling Procedures, 74 FR 38348,
August 3, 2009.
Wendelken and Smith. 2016. Memo to record
describing basis for expedited approval
of Mitchell Method M5331, Revision 1.2.
February 24, 2016.
PART 141—NATIONAL PRIMARY
DRINKING WATER REGULATIONS
1. The authority citation for part 141
continues to read as follows:
■
Authority: 42 U.S.C. 300f, 300g–1, 300g–
2, 300g–3, 300g–4, 300g–5, 300g–6, 300j–4,
300j–9, and 300j–11.
List of Subjects in 40 CFR Part 141
Environmental protection, Chemicals,
Indians-lands, Intergovernmental
relations, Reporting and recordkeeping
requirements, Water supply.
2. Appendix A to subpart c of part 141
is amended as follows:
■ a. By revising entries for ‘‘Antimony,’’
‘‘Calcium,’’ ‘‘Copper,’’ ‘‘Conductivity,’’
‘‘Magnesium,’’ ‘‘Nitrate,’’ ‘‘Nitrite,’’ and
‘‘Orthophosphate,’’ in the table entitled
‘‘ALTERNATIVE TESTING METHODS
FOR CONTAMINANTS LISTED AT 40
CFR 141.23(k)(1).’’
■ b. By revising the entry for
‘‘Turbidity’’ in the table entitled
‘‘ALTERNATIVE TESTING METHODS
FOR CONTAMINANTS LISTED AT 40
CFR 141.74(a)(1).’’
■ c. By revising entries for ‘‘Free
Chlorine’’ and ‘‘Total Chlorine’’ in the
table entitled ‘‘ALTERNATIVE
TESTING METHODS FOR
DISINFECTANT RESIDUALS LISTED
AT 40 CFR 141.74(a)(2).’’
■ d. By revising the entries for ‘‘Free
Chlorine’’, ‘‘Combined Chlorine,’’ and
‘‘Total Chlorine’’ in the table entitled
‘‘ALTERNATIVE TESTING METHODS
FOR DISINFECTANT RESIDUALS
LISTED AT 40 CFR 141.131(c)(1).’’
■ e. By revising the entire table entitled
‘‘ALTERNATIVE TESTING METHODS
FOR PARAMETERS LISTED AT 40 CFR
141.131(d).’’
■ f. By revising footnotes 2, 9, 14, 16, 18,
19, 24–27, 29, and 33.
■ g. By adding footnotes 34–42 to the
table.
The revisions and additions read as
follows:
Dated: July 7, 2016.
Peter Grevatt,
Director, Office of Ground Water and Drinking
Water.
Appendix A to Subpart C of Part 141—
Alternative Testing Methods Approved
for Analyses Under the Safe Drinking
Water Act
For the reasons stated in the
preamble, 40 CFR part 141 is amended
as follows:
*
■
*
*
*
*
ALTERNATIVE TESTING METHODS FOR CONTAMINANTS LISTED AT 40 CFR 141.23(k)(1)
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Contaminant
*
Antimony ..........................
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Methodology
*
Hydride–Atomic Absorption.
Atomic Absorption; Furnace.
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SM 21st Edition 1
SM 22nd
Edition 28
SM Online 3
*
.......................
*
.......................
*
.......................
.......................
.......................
3113 B ..........
3113 B ..........
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B–10.
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ASTM 4
*
D 3697–07,
–12.
.......................
19JYR1
Other
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ALTERNATIVE TESTING METHODS FOR CONTAMINANTS LISTED AT 40 CFR 141.23(k)(1)—Continued
Contaminant
Methodology
EPA method
SM 21st Edition 1
SM 22nd
Edition 28
SM Online 3
ASTM 4
.......................
Axially viewed inductively
coupled plasma-atomic
emission spectrometry
(AVICP–AES).
*
Copper .............................
.......................
.......................
.......................
*
EDTA Titrimetric .............
*
.......................
*
3500–Ca B ...
*
3500–Ca B ...
.......................
Atomic Absorption; Direct
Aspiration.
Inductively Coupled Plasma.
Axially viewed inductively
coupled plasma–atomic
emission spectrometry
(AVICP–AES).
Ion Chromatography .......
*
Calcium ............................
200.5, Revision 4.2.2.
.......................
3111 B ..........
3111 B ..........
.......................
.......................
3120 B ..........
3120 B ..........
.......................
*
D 511–09,
–14 A.
D 511–90,
–14 B.
.......................
200.5, Revision 4.2.2.
.......................
.......................
.......................
.......................
.......................
.......................
.......................
.......................
D 6919–09 ....
*
.......................
*
3113 B ..........
*
3113 B ..........
.......................
3111 B ..........
3111 B ..........
3113 B–04,
B–10.
.......................
.......................
3120 B ..........
3120 B ..........
.......................
*
D 1688–07,
–12 C.
D 1688–07,
–12 A.
.......................
200.5, Revision 4.2.2.
.......................
.......................
.......................
.......................
.......................
.......................
.......................
.......................
.......................
D 1125–14 A
*
Atomic Absorption; Furnace.
Atomic Absorption; Direct
Aspiration.
Inductively Coupled Plasma.
Axially viewed inductively
coupled plasma–atomic
emission spectrometry
(AVICP–AES).
Colorimetric .....................
Conductivity .....................
Conductance ...................
.......................
2510 B ..........
2510 B ..........
.......................
*
Magnesium ......................
*
Atomic Absorption ...........
*
.......................
*
3111 B ..........
*
3111 B ..........
.......................
Inductively Coupled Plasma.
Complexation Titrimetric
Methods.
Axially viewed inductively
coupled plasma-atomic
emission spectrometry
(AVICP–AES).
Ion Chromatography .......
.......................
3120 B ..........
3120 B ..........
.......................
.......................
3500–Mg B ...
3500–Mg B ...
.......................
200.5, Revision 4.2.2.
.......................
.......................
.......................
.......................
.......................
.......................
.......................
*
.......................
.......................
*
D 4327–11 ....
.......................
.......................
.......................
.......................
.......................
.......................
Colorimetric; Direct .........
.......................
.......................
.......................
.......................
.......................
Ion Chromatography .......
Automated Cadmium Reduction.
Manual Cadmium Reduction.
Spectrophotometric .........
.......................
.......................
D 4327–11 ....
.......................
.......................
.......................
.......................
.......................
.......................
4110 B ..........
4500–NO3
F.
4500–NO3
E.
4500–NO2
B.
.......................
.......................
.......................
Reduction/Colorimetric ....
4110 B ..........
4500–NO3
F.
4500–NO3
E.
4500–NO2
B.
.......................
.......................
.......................
Ion Chromatography .......
Colorimetric, ascorbic
acid, single reagent.
Colorimetric, Automated,
Ascorbic Acid.
.......................
.......................
4110 B ..........
4500–P E ......
4110 B ..........
4500–P E ......
.......................
4500–P E–99
D 4327–11 ....
.......................
.......................
4500–P F ......
4500–P F ......
4500–P F–99
.......................
Hach Method 8026 35
Hach Method 10272.36
.......................
.......................
*
4110 B ..........
4500–NO3
F.
4500–NO3
E.
4500–NO3
D.
.......................
.......................
.......................
Reduction/Colorimetric ....
*
4110 B ..........
4500–NO3
F.
4500–NO3
E.
4500–NO3
D.
.......................
*
D 6919–09 ....
*
Ion Chromatography .......
Automated Cadmium Reduction.
Manual Cadmium Reduction.
Ion Selective Electrode ...
*
D 511–09,
–14 A.
.......................
*
Nitrate ..............................
Nitrite ...............................
Orthophosphate ...............
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Other
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*
*
*
VerDate Sep<11>2014
.......................
.......................
.......................
.......................
*
*
*
*
*
*
D 511–09,
¥14 B.
.......................
*
*
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*
*
Systea Easy (1-Reagent) 8 NECi NitrateReductase.40
Hach TNTplus TM 835/
836 Method 10206.23
Systea Easy (1-Reagent) 8 NECi NitrateReductase.40
Thermo-Fisher Discrete
Analyzer.41
*
46846
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ALTERNATIVE TESTING METHODS FOR CONTAMINANTS LISTED AT 40 CFR 141.74(a)(1)
Organism
SM 21st Edition 1
Methodology
*
Turbidity .....................
SM 22nd Edition 28
*
*
*
*
Nephelometric Method ... 2130 B ................... 2130 B ...................
Laser Nephelometry (on- ................................ ................................
line).
LED Nephelometry (on................................ ................................
line).
LED Nephelometry (on................................ ................................
line).
LED Nephelometry (port- ................................ ................................
able).
360° Nephelometry ........ ................................ ................................
SM Online 3
Other
*
*
................................
Mitchell M5271,10 Mitchell M5331, Rev. 1.2.42
Mitchell M5331,11 Mitchell M5331, Rev. 1.2.42
AMI Turbiwell.15
................................
Orion AQ4500.12
................................
Hach Method 10258.39
................................
................................
ALTERNATIVE TESTING METHODS FOR DISINFECTANT RESIDUALS LISTED AT 40 CFR 141.74(a)(2)
Residual
Methodology
SM 21st Edition 1
SM 22nd Edition 28
ASTM 4
Free Chlorine .............
Amperometric Titration ...
DPD Ferrous Titrimetric
DPD Colorimetric ...........
Syringaldazine (FACTS)
On-line Chlorine Analyzer.
Amperometric Sensor ....
Indophenol Colorimetric
Amperometric Titration ...
Amperometric Titration
(Low level measurement).
DPD Ferrous Titrimetric
DPD Colorimetric ...........
Iodometric Electrode ......
On-line Chlorine Analyzer.
Amperometric Sensor ....
4500–Cl D ..............
4500–Cl F ..............
4500–Cl G .............
4500–Cl H ..............
................................
4500–Cl D ..............
4500–Cl F ..............
4500–Cl G .............
4500–Cl H ..............
................................
D 1253–08, ¥14 ...
................................
................................
................................
................................
................................
................................
4500–Cl D ..............
4500–Cl E ..............
................................
................................
4500–Cl D ..............
4500–Cl E ..............
................................
................................
D 1253–08, ¥14 ...
................................
4500–Cl F ..............
4500–Cl G .............
4500–Cl I ...............
................................
4500–Cl F ..............
4500–Cl G .............
4500–Cl I ...............
................................
................................
................................
................................
................................
EPA 334.0.16
................................
................................
................................
ChloroSense.17
Total Chlorine ............
*
*
*
*
*
*
*
*
*
Other
Hach Method 10260.31
EPA 334.0.16
ChloroSense.17
Hach Method 10241.34
Hach Method 10260.31
*
*
*
ALTERNATIVE TESTING METHODS FOR DISINFECTANT RESIDUALS LISTED AT 40 CFR 141.131(c)(1)
Residual
Methodology
SM 21st
Edition 1
SM 22nd
Edition 28
ASTM 4
Free Chlorine ..................
Amperometric Titration ..........
DPD Ferrous Titrimetric .........
DPD Colorimetric ...................
Syringaldazine (FACTS) ........
Amperometric Sensor ............
On-line Chlorine Analyzer .....
Indophenol Colorimetric .........
Amperometric Titration ..........
DPD Ferrous Titrimetric .........
DPD Colorimetric ...................
Amperometric Titration ..........
Low level Amperometric Titration.
DPD Ferrous Titrimetric .........
DPD Colorimetric ...................
Iodometric Electrode ..............
Amperometric Sensor ............
On-line Chlorine Analyzer .....
4500–Cl D ..................
4500–Cl F ...................
4500–Cl G ..................
4500–Cl H ..................
.....................................
.....................................
.....................................
4500–Cl D ..................
4500–Cl F ...................
4500–Cl G ..................
4500–Cl D ..................
4500–Cl E ..................
4500–Cl D ..................
4500–Cl F ...................
4500–Cl G ..................
4500–Cl H ..................
.....................................
.....................................
.....................................
4500–Cl D ..................
4500–Cl F ...................
4500–Cl G ..................
4500–Cl D ..................
4500–Cl E ..................
D 1253–08, ¥14 ........
.....................................
.....................................
.....................................
.....................................
.....................................
.....................................
D 1253–08, ¥14 ........
.....................................
.....................................
D 1253–08, ¥14 ........
.....................................
4500–Cl F ...................
4500–Cl G ..................
4500–Cl I ....................
.....................................
.....................................
4500–Cl F ...................
4500–Cl G ..................
4500–Cl I ....................
.....................................
.....................................
.....................................
.....................................
.....................................
.....................................
.....................................
Combined Chlorine .........
ehiers on DSK5VPTVN1PROD with RULES
Total Chlorine .................
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Hach Method 10260.31
ChloroSense.17
EPA 334.0.16
Hach Method 10241.34
Hach Method 10260.31
Hach Method 10260.31
ChloroSense.17
EPA 334.0.16
*
46847
Federal Register / Vol. 81, No. 138 / Tuesday, July 19, 2016 / Rules and Regulations
ALTERNATIVE TESTING METHODS FOR PARAMETERS LISTED AT 40 CFR 141.131(d)
Parameter
Methodology
SM 21st
Edition 1
SM 22nd
Edition 28
SM
Online 3
Total Organic Carbon (TOC) ........
High Temperature Combustion ....
Persulfate-Ultraviolet or Heated
Persulfate Oxidation.
Wet Oxidation ...............................
Ozone Oxidation ...........................
Calculation using DOC and UV254
data.
High Temperature Combustion ....
Persulfate-Ultraviolet or Heated
Persulfate Oxidation.
Wet Oxidation ...............................
Spectrophotometry ........................
5310 B ........
5310 C .......
5310 B .......
5310 C .......
....................
....................
415.3, Rev 1.2.19
415.3, Rev 1.2 19
5310 D .......
....................
....................
5310 D .......
....................
....................
....................
....................
....................
415.3, Rev 1.2.19
..............................
415.3, Rev 1.2.19
5310 B ........
5310 C .......
5310 B ........
5310 C .......
....................
....................
415.3, Rev 1.2.19
415.3, Rev 1.2.19
5310 D .......
5910 B ........
5310 D .......
5910 B ........
....................
5910 B–11 ..
415.3, Rev 1.2.19
415.3, Rev 1.2.19
Specific Ultraviolet Absorbance
(SUVA).
Dissolved Organic Carbon (DOC)
Ultraviolet absorption at 254 nm
(UV254).
*
*
*
*
*
1 Standard
Methods for the Examination of
Water and Wastewater, 21st edition (2005).
Available from American Public Health
Association, 800 I Street, NW., Washington,
DC 20001–3710.
2 EPA Method 200.5, Revision 4.2.
‘‘Determination of Trace Elements in
Drinking Water by Axially Viewed
Inductively Coupled Plasma-Atomic
Emission Spectrometry.’’ 2003. EPA/600/R–
06/115. (Available at https://www.epa.gov/
water-research/epa-drinking-water-researchmethods.)
3 Standard Methods Online are available at
https://www.standardmethods.org. The year
in which each method was approved by the
Standard Methods Committee is designated
by the last two digits in the method number.
The methods listed are the only online
versions that may be used.
4 Available from ASTM International, 100
Barr Harbor Drive, West Conshohocken, PA
19428–2959 or https://astm.org. The methods
listed are the only alternative versions that
may be used.
*
*
*
*
*
ehiers on DSK5VPTVN1PROD with RULES
8 Systea
Easy (1-Reagent). ‘‘Systea Easy (1Reagent) Nitrate Method,’’ February 4, 2009.
Available at https://www.nemi.gov or from
Systea Scientific, LLC., 900 Jorie Blvd., Suite
35, Oak Brook, IL 60523.
9 EPA Method 524.3, Version 1.0.
‘‘Measurement of Purgeable Organic
Compounds in Water by Capillary Column
Gas Chromatography/Mass Spectrometry,’’
June 2009. EPA 815–B–09–009. Available at
the National Service Center for
Environmental Publications (www.epa.gov/
nscep). Search ‘‘815B09009’’.
10 Mitchell Method M5271, Revision 1.1.
‘‘Determination of Turbidity by Laser
Nephelometry,’’ March 5, 2009. Available at
https://www.nemi.gov or from Leck Mitchell,
Ph.D., PE, 656 Independence Valley Dr.,
Grand Junction, CO 81507.
11 Mitchell Method M5331, Revision 1.1.
‘‘Determination of Turbidity by LED
Nephelometry,’’ March 5, 2009. Available at
https://www.nemi.gov or from Leck Mitchell,
Ph.D., PE, 656 Independence Valley Dr.,
Grand Junction, CO 81507.
12 Orion Method AQ4500, Revision 1.0.
‘‘Determination of Turbidity by LED
Nephelometry,’’ May 8, 2009. Available at
https://www.nemi.gov or from Thermo
VerDate Sep<11>2014
13:36 Jul 18, 2016
Jkt 238001
Scientific, 166 Cummings Center, Beverly,
MA 01915, https://www.thermo.com.
*
*
*
*
*
14 EPA
Method 557. ‘‘Determination of
Haloacetic Acids, Bromate, and Dalapon in
Drinking Water by Ion Chromatography
Electrospray Ionization Tandem Mass
Spectrometry (IC–ESI–MS/MS),’’ September
2009. EPA 815–B–09–012. Available at the
National Service Center for Environmental
Publications (www.epa.gov/nscep). Search
‘‘815B09012’’.
15 AMI Turbiwell, ‘‘Continuous
Measurement of Turbidity Using a SWAN
AMI Turbiwell Turbidimeter,’’ August 2009.
Available at https://www.nemi.gov or from
Markus Bernasconi, SWAN Analytische
Instrumente AG, Studbachstrasse 13, CH–
8340 Hinwil, Switzerland.
16 EPA Method 334.0. ‘‘Determination of
Residual Chlorine in Drinking Water Using
an On-line Chlorine Analyzer,’’ September
2009. EPA 815–B–09–013. Available at the
National Service Center for Environmental
Publications (www.epa.gov/nscep). Search
‘‘815B09013’’.
17 ChloroSense. ‘‘Measurement of Free and
Total Chlorine in Drinking Water by Palintest
ChloroSense,’’ August 2009. Available at
https://www.nemi.gov or from Palintest Ltd,
1455 Jamike Avenue (Suite 100), Erlanger,
KY 41018.
18 EPA Method 302.0. ‘‘Determination of
Bromate in Drinking Water using TwoDimensional Ion Chromatography with
Suppressed Conductivity Detection,’’
September 2009. EPA 815–B–09–014.
Available at the National Service Center for
Environmental Publications (www.epa.gov/
nscep). Search ‘‘815B09014’’.
19 EPA 415.3, Revision 1.2. ‘‘Determination
of Total Organic Carbon and Specific UV
Absorbance at 254 nm in Source Water and
Drinking Water,’’ September 2009. EPA/600/
R–09/122. Available at https://www.epa.gov/
water-research/epa-drinking-water-researchmethods.
*
*
*
*
*
Company. ‘‘Hach Company
TNTplus TM 835/836 Nitrate Method 10206—
Spectrophotometric Measurement of Nitrate
in Water and Wastewater,’’ January 2011.
5600 Lindbergh Drive, P.O. Box 389,
Loveland, Colorado 80539. (Available at
https://www.hach.com.)
24 EPA Method 525.3. ‘‘Determination of
Semivolatile Organic Chemicals in Drinking
PO 00000
23 Hach
Frm 00021
Fmt 4700
Sfmt 4700
EPA
Other
Hach Method 10267.38
Hach Method 10261.37
Water by Solid Phase Extraction and
Capillary Column Gas Chromatography/Mass
Spectrometry (GC/MS),’’ February 2012.
EPA/600/R–12/010. Available at https://
www.epa.gov/water-research/epa-drinkingwater-research-methods.
25 EPA Method 536. ‘‘Determination of
Triazine Pesticides and their Degradates in
Drinking Water by Liquid Chromatography
Electrospray Ionization Tandem Mass
Spectrometry (LC/ESI–MS/MS),’’ October
2007. EPA 815–B–07–002. Available at the
National Service Center for Environmental
Publications (www.epa.gov/nscep). Search
‘‘815B07002’’.
26 EPA Method 523. ‘‘Determination of
Triazine Pesticides and their Degradates in
Drinking Water by Gas Chromatography/
Mass Spectrometry (GC/MS),’’ February
2011. EPA 815–R–11–002. Available at the
National Service Center for Environmental
Publications (www.epa.gov/nscep). Search
‘‘815R11002’’.
27 EPA Method 1623.1. ‘‘Cryptosporidium
and Giardia in Water by Filtration/IMS/FA,’’
2012. EPA–816–R–12–001. Available at the
National Service Center for Environmental
Publications (www.epa.gov/nscep). Search
‘‘816R12001’’.
28 Standard Methods for the Examination
of Water and Wastewater, 22nd edition
(2012). Available from American Public
Health Association, 800 I Street, NW.,
Washington, DC 20001–3710.
29 EPA Method 524.4, Version 1.0.
‘‘Measurement of Purgeable Organic
Compounds in Water by Gas
Chromatography/Mass Spectrometry using
Nitrogen Purge Gas,’’ May 2013. EPA 815–R–
13–002. Available at the National Service
Center for Environmental Publications
(www.epa.gov/nscep). Search ‘‘815R13002’’.
*
*
*
31 Hach
*
*
Company. ‘‘Hach Method 10260—
Determination of Chlorinated Oxidants (Free
and Total) in Water Using Disposable Planar
Reagent-filled Cuvettes and Mesofluidic
Channel Colorimetry,’’ April 2013. 5600
Lindbergh Drive, P.O. Box 389, Loveland, CO
80539. (Available at https://www.hach.com.)
33 Tecta EC/TC. ‘‘TechtaTM EC/TC Medium
and TechtaTM Instrument: A Presence/
Absence Method for the Simultaneous
Detection of Total Coliforms and Escherichia
coli (E. coli) in Drinking Water,’’ version 1.0,
May 2014. Available from Veolia Water
Solutions and Technologies, Suite 4697,
E:\FR\FM\19JYR1.SGM
19JYR1
46848
Federal Register / Vol. 81, No. 138 / Tuesday, July 19, 2016 / Rules and Regulations
Biosciences Complex, 116 Barrie Street,
Kingston, Ontario, Canada, K7L 3N6.
34 Hach Company. ‘‘Hach Method 10241—
Spectrophotometric Measurement of Free
Chlorine (Cl2) in Finished Drinking Water,’’
November 2015. Revision 1.2. 5600
Lindbergh Drive, P.O. Box 389, Loveland, CO
80539. (Available at https://www.hach.com.)
35 Hach Company. ‘‘Hach Method 8026—
Spectrophotometric Measurement of Copper
in Finished Drinking Water,’’ December
2015. Revision 1.2. 5600 Lindbergh Drive,
P.O. Box 389, Loveland, CO 80539.
(Available at https://www.hach.com.)
36 Hach Company. ‘‘Hach Method 10272—
Spectrophotometric Measurement of Copper
in Finished Drinking Water,’’ December
2015. Revision 1.2. 5600 Lindbergh Drive,
P.O. Box 389, Loveland, CO 80539.
(Available at https://www.hach.com.)
37 Hach Company. ‘‘Hach Method 10261—
Total Organic Carbon in Finished Drinking
Water by Catalyzed Ozone Hydroxyl Radical
Oxidation Infrared Analysis,’’ December
2015. Revision 1.2. 5600 Lindbergh Drive,
P.O. Box 389, Loveland, CO 80539.
(Available at https://www.hach.com.)
38 Hach Company. ‘‘Hach Method 10267—
Spectrophotometric Measurement of Total
Organic Carbon (TOC) in Finished Drinking
Water,’’ December 2015. Revision 1.2. 5600
Lindbergh Drive, P.O. Box 389, Loveland, CO
80539. (Available at https://www.hach.com.)
39 Hach Company. ‘‘Hach Method 10258—
Determination of Turbidity by 360°
Nephelometry,’’ January 2016. 5600
Lindbergh Drive, P.O. Box 389, Loveland, CO
80539. (Available at https://www.hach.com.)
40 Nitrate Elimination Company, Inc.
(NECi). ‘‘Method for Nitrate Reductase
Nitrate-Nitrogen Analysis of Drinking
Water,’’ February 2016. Superior Enzymes,
Inc., 334 Hecla Street, Lake Linden, Michigan
49945.
41 Thermo Fisher. ‘‘Thermo Fisher
Scientific Drinking Water Orthophosphate
Method for Thermo Scientific Gallery
Discrete Analyzer,’’ February 2016. Revision
5. Thermo Fisher Scientific, Ratastie 2, 01620
Vantaa, Finland.
42 Mitchell Method M5331, Revision 1.2.
‘‘Determination of Turbidity by LED or Laser
Nephelometry,’’ February 2016. Available
from Leck Mitchell, Ph.D., PE, 656
Independence Valley Dr., Grand Junction, CO
81507.
[FR Doc. 2016–16516 Filed 7–18–16; 8:45 am]
BILLING CODE 6560–50–P
DEPARTMENT OF HOMELAND
SECURITY
Coast Guard
ehiers on DSK5VPTVN1PROD with RULES
46 CFR Parts 1, 2, 15, 136, 137, 138,
139, 140, 141, 142, 143, 144, and 199
[Docket No. USCG–2006–24412]
RIN 1625–AB06
Inspection of Towing Vessels
AGENCY:
Coast Guard, DHS.
VerDate Sep<11>2014
13:36 Jul 18, 2016
Jkt 238001
Final rule; information
collection approval.
ACTION:
The Coast Guard announces
that the Office of Management and
Budget (OMB) has approved the
collection of information described in
the Inspection of Towing Vessels final
rule published on June 20, 2016. In that
rule, which establishes safety
regulations governing the inspection,
standards, and safety management
systems of towing vessels, we stated that
before the Coast Guard could enforce
the collection of information
requirements in the rule, OMB would
need to approve the Coast Guard’s
request to collect this information. This
document announces that approval. On
June 23, 2016, OMB approved this Coast
Guard request and assigned this
collection of information OMB control
number 1625–0117.
DATES: On June 23, 2016, OMB
approved a new collection of
information assigned OMB control
number 1625–0117. That approval
expires on June 30, 2019. Based on this
OMB approval, the Coast Guard may
start enforcing applicable collection of
information requirements in the
Inspection of Towing Vessels final rule
published in the Federal Register on
June 20, 2016 (81 FR 40004), starting on
that rule’s effective date, July 20, 2016.
FOR FURTHER INFORMATION CONTACT: If
you have questions about this rule, call
or email Lieutenant Commander
William Nabach, Project Manager, CG–
OES–2, Coast Guard, telephone 202–
372–1386, email William.A.Nabach@
uscg.mil.
SUPPLEMENTARY INFORMATION: On June
23, 2016, the Office of Management and
Budget (OMB) approved a new
collection of information for the
Inspection of Towing Vessels final rule
published on June 20, 2016 (81 FR
40004). In that rule, which establishes
safety regulations governing the
inspection, standards, and safety
management systems of towing vessels,
we stated that before the Coast Guard
could enforce the collection of
information requirements in the rule,
OMB would need to approve the Coast
Guard’s request to collect this
information. This document announces
the approval of that collection which
has been assigned OMB control number
1625–0117. OMB’s approval of that
collection will expire on June 30, 2019.
On July 12, 2016, OMB approved the
insertion of ‘‘CFR’’ in the title of the
collection of information so it conforms
with the title presented in the final rule:
Towing Vessels—Title 46 CFR
Subchapter M. We have included that
SUMMARY:
PO 00000
Frm 00022
Fmt 4700
Sfmt 4700
notice of action in the docket as well as
OMB’s June 23, 2016 notice of action.
The Inspection of Towing Vessels
final rule becomes effective July 20,
2016, and the Coast Guard may start
enforcing that rule’s applicable
collection of information requirements
on that date. As noted in the summary
of that rule, certain existing towing
vessels subject to this rule will have an
additional 2 years before having to
comply with most of its requirements,
but we anticipate receiving applications
from organizations seeking to become
third-party organizations soon after the
rule becomes effective.
A copy of the two approval memos
from OMB and the Inspection of Towing
Vessels final rule are in docket USCG–
2006–24412 which is available on the
Internet by going to https://
www.regulations.gov, inserting USCG–
2006–24412 in the ‘‘Search’’ box, and
clicking ‘‘Search.’’
This document, which announces
approval of the collection of information
assigned OMB control number 1625–
0117, is issued under authority of 5
U.S.C. 552(a).
Dated: July 14, 2016.
J.G. Lantz,
Director of Commercial Regulations and
Standards.
[FR Doc. 2016–17007 Filed 7–18–16; 8:45 am]
BILLING CODE 9110–04–P
DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric
Administration
50 CFR Part 622
[Docket No. 121004518–3398–01]
RIN 0648–XE701
Reef Fish Fishery of the Gulf of
Mexico; 2016 Recreational
Accountability Measures and Closure
for Gulf of Mexico Gray Triggerfish
National Marine Fisheries
Service (NMFS), National Oceanic and
Atmospheric Administration (NOAA),
Commerce.
ACTION: Temporary rule; closure.
AGENCY:
NMFS implements
accountability measures (AMs) for the
gray triggerfish recreational sector in the
exclusive economic zone (EEZ) of the
Gulf of Mexico (Gulf) for the 2016
fishing year through this temporary rule.
NMFS has determined that the 2015
recreational annual catch limit (ACL) for
Gulf gray triggerfish was exceeded;
therefore, NMFS reduces the gray
triggerfish recreational ACL and annual
SUMMARY:
E:\FR\FM\19JYR1.SGM
19JYR1
Agencies
[Federal Register Volume 81, Number 138 (Tuesday, July 19, 2016)]
[Rules and Regulations]
[Pages 46839-46848]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-16516]
[[Page 46839]]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 141
[EPA-HQ-OW-2016-0281; FRL-9948-54-OW]
Expedited Approval of Alternative Test Procedures for the
Analysis of Contaminants Under the Safe Drinking Water Act; Analysis
and Sampling Procedures
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This action announces the U.S. Environmental Protection
Agency's (EPA's) approval of alternative testing methods for use in
measuring the levels of contaminants in drinking water and determining
compliance with national primary drinking water regulations. The Safe
Drinking Water Act authorizes EPA to approve the use of alternative
testing methods through publication in the Federal Register. EPA is
using this streamlined authority to make 16 additional methods
available for analyzing drinking water samples. This expedited approach
provides public water systems, laboratories, and primacy agencies with
more timely access to new measurement techniques and greater
flexibility in the selection of analytical methods, thereby reducing
monitoring costs while maintaining public health protection.
DATES: This action is effective July 19, 2016.
ADDRESSES: The EPA has established a docket for this action under
Docket ID No. EPA-HQ-2016-0281. All documents in the docket are listed
on the https://www.regulations.gov Web site. Although listed in the
index, some information is not publicly available, e.g., CBI or other
information whose disclosure is restricted by statute. Certain other
material, such as copyrighted material, is not placed on the Internet
and will be publicly available only in hard copy form. Publicly
available docket materials are available electronically through https://www.regulations.gov.
FOR FURTHER INFORMATION CONTACT: The Safe Drinking Water Hotline (800)
426-4791 or Glynda Smith, Technical Support Center, Standards and Risk
Management Division, Office of Ground Water and Drinking Water (MS
140), Environmental Protection Agency, 26 West Martin Luther King
Drive, Cincinnati, OH 45268; telephone number: (513) 569-7652; email
address: smith.glynda@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
A. Does this action apply to me?
Public water systems are the regulated entities required to measure
contaminants in drinking water samples. In addition, EPA Regions as
well as states and tribal governments with authority to administer the
regulatory program for public water systems under the Safe Drinking
Water Act (SDWA) may measure contaminants in water samples. When EPA
sets a monitoring requirement in its national primary drinking water
regulations for a given contaminant, the Agency also establishes in the
regulations standardized test procedures for analysis of the
contaminant. This action makes alternative testing methods available
for particular drinking water contaminants beyond the testing methods
currently established in the regulations. EPA is providing public water
systems required to test water samples with a choice of using either a
test procedure already established in the existing regulations or an
alternative test procedure that has been approved in this action or in
prior expedited approval actions. Categories and entities that may
ultimately be affected by this action include:
------------------------------------------------------------------------
Examples of
Category potentially NAICS \1\
regulated entities
------------------------------------------------------------------------
State, local, & tribal governments.. State, local and 924110
tribal
governments that
analyze water
samples on behalf
of public water
systems required
to conduct such
analysis; state,
local and tribal
governments that
directly operate
community and non-
transient non-
community water
systems required
to monitor.
Industry............................ Private operators 221310
of community and
non-transient non-
community water
systems required
to monitor.
Municipalities...................... Municipal 924110
operators of
community and non-
transient non-
community water
systems required
to monitor.
------------------------------------------------------------------------
\1\ North American Industry Classification System.
This table is not intended to be exhaustive, but rather provides a
guide for readers regarding entities likely to be affected by this
action. This table lists the types of entities that EPA is now aware
could potentially be affected by this action. Other types of entities
not listed in the table could also be impacted. To determine whether
your facility is affected by this action, you should carefully examine
the applicability language in the Code of Federal Regulations (CFR) at
40 CFR 141.2 (definition of public water system). If you have questions
regarding the applicability of this action to a particular entity,
consult the person listed in the preceding FOR FURTHER INFORMATION
CONTACT section.
Abbreviations and Acronyms Used in This Action
APHA: American Public Health Association
ATP: Alternate Test Procedure
CFR: Code of Federal Regulations
DPD: N,N-diethyl-p-phenylenediamine
EPA: United States Environmental Protection Agency
LED: Light Emitting Diode
NAICS: North American Industry Classification System
NEMI: National Environmental Methods Index
NTU: Nephelometric Turbidity Unit
QC: Quality Control
SDWA: The Safe Drinking Water Act
TOC: Total Organic Carbon
VCSB: Voluntary Consensus Standard Bodies
II. Background
A. What is the purpose of this action?
In this action, EPA is approving 16 analytical methods for
determining contaminant concentrations in drinking water samples
collected under SDWA. Regulated parties required to sample and monitor
may use either the testing methods already established in existing
regulations or the alternative testing methods being approved in this
action or in prior expedited approval actions. The new methods are
listed along with other methods similarly approved through previous
expedited actions in 40 CFR part 141, appendix A to subpart C and on
EPA's drinking water methods Web site at https://www.epa.gov/dwanalyticalmethods.
[[Page 46840]]
B. What is the basis for this action?
When EPA determines that an alternative analytical method is
``equally effective'' (i.e., as effective as a method that has already
been promulgated in the regulations), SDWA allows EPA to approve the
use of the alternative method through publication in the Federal
Register (see Section 1401(1) of SDWA). EPA is using this streamlined
approval authority to make 16 additional methods available for
determining contaminant concentrations in drinking water samples
collected under SDWA. EPA has determined that, for each contaminant or
group of contaminants listed in Section III, the additional testing
methods being approved in this action are as effective as one or more
of the testing methods already approved in the regulations for those
contaminants. Section 1401(1) of SDWA states that the newly approved
methods ``shall be treated as an alternative for public water systems
to the quality control and testing procedures listed in the
regulation.'' Accordingly, this action makes these additional 16
analytical methods legally available as options for meeting EPA's
monitoring requirements.
This action does not add regulatory language, but does, for
informational purposes, update an appendix to the regulations at 40 CFR
part 141 that lists all methods approved under Section 1401(1) of SDWA.
Accordingly, while this action is not a rule, it is updating CFR text
and therefore is being published in the ``Final Rules'' section of the
Federal Register.
III. Summary of Approvals
EPA is approving 16 methods that are equally effective relative to
methods previously promulgated in the regulations. By means of this
rule, these 16 methods are added to appendix A to subpart C of 40 CFR
part 141.
A. Methods developed by Voluntary Consensus Standard Bodies (VCSB)
ASTM International. EPA compared the most recent versions of seven
ASTM International methods to the earlier versions of those methods
that are currently approved in 40 CFR part 141. Changes between the
earlier approved version and the most recent version of each method are
summarized in Smith (2015). The revisions primarily involve editorial
changes (e.g., updated references, definitions, terminology, procedural
clarifications, and reorganization of text). The revised methods are
the same as the approved versions with respect to sample collection and
handling protocols, sample preparation, analytical methodology, and
method performance data; thus, EPA finds they are equally effective
relative to the approved methods.
EPA is thus approving the use of the following ASTM methods for the
contaminants and their respective regulations listed in the following
table:
----------------------------------------------------------------------------------------------------------------
ASTM revised version Approved method Contaminant Regulation
----------------------------------------------------------------------------------------------------------------
D 1253-14 (ASTM 2014a)............... D 1253-03 (ASTM 2003a). Free Chlorine; Total 40 CFR 141.74(a)(2); 40
Chlorine. CFR 141.131(c)(1).
D 1253-14 (ASTM 2014a)............... D 1253-03 (ASTM 2003a). Combined Chlorine...... 40 CFR 141.131(c)(1).
D 1125-14 A (ASTM 2014b)............. D 1125-95 A (ASTM 1995) Conductivity........... 40 CFR 141.23(k)(1).
D 511-14 A (ASTM 2014c).............. D 511-03 A (ASTM 2003b) Calcium; Magnesium..... 40 CFR 141.23(k)(1).
D 511-14 B (ASTM 2014c).............. D 511-03 B (ASTM 2003b) Calcium; Magnesium..... 40 CFR 141.23(k)(1).
D 1688-12 A (ASTM 2012a)............. D 1688-02 A (ASTM Copper................. 40 CFR 141.23(k)(1).
2002a).
D 1688-12 C (ASTM 2012a)............. D 1688-02 C (ASTM Copper................. 40 CFR 141.23(k)(1).
2002a).
D 3697-12 (ASTM 2012b)............... D 3697-02 (ASTM 2002b). Antimony............... 40 CFR 141.23(k)(1).
----------------------------------------------------------------------------------------------------------------
The ASTM methods are available from ASTM International, 100 Barr
Harbor Drive, West Conshohocken, PA 19428-2959 or https://www.astm.org.
B. Methods Developed by Vendors
1. Hach Method 10241--Spectrophotometric Measurement of Free
Chlorine (Cl2) in Finished Drinking Water (Hach Company
2015a). In Hach Method 10241, free chlorine is converted to
monochloramine by addition of an ammonia solution to a drinking water
sample. In the presence of a cyanoferrate catalyst, monochloramine
reacts with a substituted phenol to form an intermediate monoamine
compound. The intermediate monoamine compound couples with excess
substituted phenol to form a green indophenol compound.
Spectrophotometric measurement of absorbance at 655 nm (610 nm for
colorimeters) is directly proportional to the concentration of free
chlorine in the sample.
The currently approved methods for free chlorine in drinking water
are listed in the tables at 40 CFR 141.74(a)(2) and 40 CFR
141.131(c)(1). One of the most widely used approved methods is Standard
Method 4500-Cl G-00 (APHA 2000a), which uses a N,N-diethyl-p-
phenylenediamine (DPD) indicator for spectrophotometric determination
of residual chlorine concentrations in drinking water. The DPD
methodology can be subject to interferences associated with the
presence of manganese, chloramines, and other oxidants. Hach Method
10241 is not subject to such interferences.
A multi-laboratory study compared the performance characteristics
of Hach Method 10241 to the performance characteristics of the approved
Standard Method 4500-Cl G-00. A variety of samples, including drinking
water samples from both surface water and ground water sources, were
fortified with known chlorine concentrations and analyzed by each
method. The results are summarized in the validation study report (Hach
Company 2015b). EPA has determined that Hach Method 10241 is equally as
effective as the approved Standard Method 4500-Cl G-00. The basis for
this determination is discussed in Adams and Smith (2016). Therefore,
EPA is approving Hach Method 10241 for determining free chlorine
concentrations in drinking water. Hach Method 10241 can be obtained
from Hach Company, 5600 Lindbergh Drive, Loveland, Colorado 80539.
(https://www.hach.com.)
2. Hach Method 8026--Spectrophotometric Measurement of Copper in
Finished Drinking Water (Hach Company 2015c). In Hach Method 8026,
cuprous copper is measured colorimetrically by complexation with
bicinchoninic acid. The intensity in color is proportional to the
copper concentration, and spectrophotometer measurements are taken at
560 nm. Cupric copper present in samples is chemically reduced to
cuprous copper. Metal and hardness interferences in samples are
mitigated through the use of a chelating agent. The method is performed
by the addition of
[[Page 46841]]
powder pillows containing reagents to the water samples.
The currently approved methods for the analysis of copper in
drinking water are listed in the table at 40 CFR 141.23(k)(1). The
approved methods are based on atomic spectroscopy technologies. Hach
Method 8026 employs a spectrophotometer, and is based on known
complexation principles and simple color/absorbance measurements to
determine copper concentrations.
A multi-laboratory validation study was conducted to compare the
performance of Hach Method 8026 to EPA Method 200.7 (USEPA 1994), one
of the approved methods for the analysis of copper in drinking water.
Multiple finished drinking water samples drawn from both ground water
and surface water sources were used in the validation study. Precision,
accuracy and sensitivity data were collected by analyzing drinking
water samples fortified with varying concentrations of copper
standards. The results are summarized in the validation study report
(Hach Company 2015d). EPA has determined that Hach Method 8026 is
equally as effective as the approved EPA Method 200.7. The basis for
this determination is discussed in Adams and Smith (2016). Therefore,
EPA is approving Hach Method 8026 for the analysis of copper in
drinking water. Hach Method 8026 can be obtained from Hach Company,
5600 Lindbergh Drive, Loveland, Colorado 80539. (https://www.hach.com).
3. Hach Method 10261--Total Organic Carbon in Finished Drinking
Water by Catalyzed Ozone Hydroxyl Radical Oxidation Infrared Analysis
(Hach Company 2015e). Hach Method 10261 is a method for the
determination of total organic carbon (TOC) in drinking water using an
advanced oxidation process and non-dispersive infrared spectroscopy. In
this method, ozone and a base are added to water to produce hydroxyl
radicals. The hydroxyl radicals oxidize organic carbon to produce
carbon dioxide and sodium oxalate. The sodium oxalate is further
oxidized to carbon dioxide using acidification and a manganese
catalyst. The carbon dioxide produced by both oxidation processes is
then measured using non-dispersive infrared spectroscopy.
The currently approved methods for the analysis of TOC in drinking
water are listed in 40 CFR 141.131(d)(3). The approved oxidation
method, Standard Method 5310 C-00 (APHA 2000b), may not completely
oxidize certain organic compounds. Hach Method 10261 uses a more
efficient advanced oxidation process to ensure more complete oxidation.
A multi-laboratory validation study was conducted to compare the
performance of Hach Method 10261 to the approved Standard Method 5310
C-00. Multiple finished drinking water samples drawn from both ground
water and surface water sources were used in the validation study.
Precision, accuracy and sensitivity data were collected by analyzing
drinking water samples fortified with varying concentrations of TOC.
The results are summarized in the validation study report (Hach Company
2015f). EPA has determined that Hach Method 10261 is equally as
effective as the approved Standard Method 5310 C-00. The basis for this
determination is discussed in Adams and Smith (2016). Therefore, EPA is
approving Hach Method 10261 for the analysis of TOC in drinking water.
Hach Method 10261 can be obtained from Hach Company, 5600 Lindbergh
Drive, Loveland, Colorado 80539. (https://www.hach.com).
4. Hach Method 10267--Spectrophotometric Measurement of Total
Organic Carbon (TOC) in Finished Drinking Water (Hach Company 2015g).
Hach Method 10267 is used for the determination of TOC in drinking
water using acid persulfate digestion and visible spectrum
spectrophotometry. In this method, samples are oxidized using acid
persulfate digestions to convert TOC into carbon dioxide. The generated
carbon dioxide is passed through a gas-permeable membrane into an
indicator solution that is measured spectrophotometrically at 435 nm.
Hach Method 10267 uses pre-packaged reagents to simplify sample
preparation and quickly perform the analysis. Interfering inorganic
carbon is removed from the sample prior to digestion by acidification
and agitation.
The currently approved methods for the analysis of TOC in drinking
water are listed in 40 CFR 141.131(d)(3). A multi-laboratory validation
study was conducted to compare the performance of Hach Method 10267 to
the approved Standard Method 5310 C-00 (APHA 200b). Multiple finished
drinking water samples drawn from both ground water and surface water
sources were used in the validation study. Precision, accuracy and
sensitivity data were collected by analyzing drinking water samples
fortified with varying concentrations of TOC. The results are
summarized in the validation study report (Hach Company 2015h). EPA has
determined that Hach Method 10267 is equally as effective as the
approved Standard Method 5310 C-00. The basis for this determination is
discussed in Adams and Smith (2016). Therefore, EPA is approving Hach
Method 10267 for the analysis of TOC in drinking water. Hach Method
10267 can be obtained from Hach Company, 5600 Lindbergh Drive,
Loveland, Colorado 80539. (https://www.hach.com).
5. Hach Method 10272--Spectrophotometric Measurement of Copper in
Finished Drinking Water (Hach Company 2015i). In Hach Method 10272,
cuprous copper is measured colorimetrically by complexation with
bicinchoninic acid. The intensity in color is proportional to the
copper concentration, and spectrophotometer measurements are taken at
560 nm. Cupric copper present in samples is chemically reduced to
cuprous copper. Metal and hardness interferences in samples are
mitigated through the use of a chelating agent. The method is performed
through the use of a copper Chemkey and portable analyzer.
The currently approved methods for the analysis of copper in
drinking water are listed in the table at 40 CFR 141.23(k)(1). The
approved methods are based on atomic spectroscopy technologies. Hach
Method 10272 uses a spectrophotometer, simple color/absorbance
measurements to determine copper concentrations, and incorporates
portability and streamlining into the analysis.
A multi-laboratory validation study was conducted to compare the
performance of Hach Method 10272 to EPA Method 200.7 (USEPA 1994), one
of the approved methods for the analysis of copper in drinking water.
Multiple finished drinking water samples drawn from both ground water
and surface water sources were used in the validation study. Precision,
accuracy and sensitivity data were collected by analyzing drinking
water samples fortified with varying concentrations of copper
standards. The results are summarized in the validation study report
(Hach Company 2015j). EPA has determined that Hach Method 10272 is
equally as effective as the approved EPA Method 200.7. The basis for
this determination is discussed in Adams and Smith (2016). Therefore,
EPA is approving Hach Method 10272 for the analysis of copper in
drinking water. Hach Method 10272 can be obtained from Hach Company,
5600 Lindbergh Drive, Loveland, Colorado 80539. (https://www.hach.com).
6. Hach Method 10258--Determination of Turbidity by 360[deg]
Nephelometry (Hach Company 2016). In Hach Method 10258 turbidity is
determined in conventional-filtered and membrane-filtered treated
drinking water using a 360 degree nephelometer.
[[Page 46842]]
In this method, a non-incandescent light source operates at a
wavelength of 660 + 30 nm and light scattered by the sample is
collected and detected at an angle 90 degrees to the incident light,
360 degrees around the sample vial. This design offers improved
sensitivity (minimum quantitation limit of 0.0005 Nephelometric
Turbidity Units (NTU) and resolution (0.0001 NTU) relative to the
approved methods.
The currently approved methods for the analysis of turbidity in
treated drinking water are listed in the regulations at 40 CFR
141.74(a)(1). A multi-facility validation study was conducted to
compare the performance of Hach Method 10258 to the approved Hach
FilterTrak Method 10133 (Hach Company 2000) for the analysis of
turbidity in treated drinking water. Seven public drinking water
facilities participated in the study. Three facilities produced treated
water using both conventional-filtration and membrane-filtration, two
facilities produced only conventional-filtration treated water, and two
facilities produced only membrane-filtration treated water. Source
waters encompassed both surface waters and ground waters under the
direct influence of surface water. Turbidity comparison data were
collected at each facility by operating the instrument collecting the
Hach Method 10258 turbidity data in parallel with an instrument
collecting turbidity data using the approved Hach FilterTrack Method
10133. Precision and accuracy (based on recovery of matrix spike
injections) data were collected over a range of spike levels (0.0015-
0.500 NTU) and calibration verification data were collected from each
facility. The results are summarized in the validation study report
(Hach Company 2014). EPA has determined that Hach Method 10258 is
equally as effective as the approved Hach FilterTrak Method 10133. The
basis for this determination is discussed in Adams and Smith (2016).
Therefore, EPA is approving Hach Method 10258 for the analysis of
turbidity in treated drinking water. Hach Method 10258 can be obtained
from Hach Company, 5600 Lindbergh Drive, Loveland, Colorado 80539.
(https://www.hach.com).
7. Nitrate Elimination Company, Inc. (NECi)--Method for Nitrate
Reductase Nitrate-Nitrogen Analysis of Drinking Water (NECi 2016a). The
NECi nitrate reductase method is used for the determination of nitrate
plus nitrite (as nitrogen) in drinking water. In this method, a
eukaryotic nitrate reductase is used to catalyze the conversion of
nitrate to nitrite in the presence of nicotinamide adenine dinucleotide
as a reductant in a buffer with a near neutral pH. The combined nitrite
(both the original and reduced nitrate) is reacted with sulfanilamide
and N-(1-napthyl) ethylenediamine dihydrochloride to produce a
chromophore. The combined nitrite concentration is then measured
spectrophotometrically at ~540 nm. The method entails the use of a
discrete analyzer that incorporates a spectrophotometric detector.
The currently approved methods for the analysis of nitrate and
nitrite in drinking water are listed in 40 CFR 141.23(k)(1). The
approved EPA Method 353.2 (USEPA 1993a) uses cadmium to reduce nitrate
to nitrite and subsequently measures the combined nitrite
colorimetrically. The NECi nitrate reductase method provides an
environmentally friendly approach to nitrate-nitrogen analysis by
eliminating the use of toxic cadmium and requires only a fraction of
the sample volume used in the approved EPA method.
A multi-laboratory validation study was conducted to compare the
performance of the NECi nitrate reductase method to the approved EPA
Method 353.2. Multiple finished drinking water samples drawn from both
ground water and surface water sources were used in the validation
study. Precision, accuracy and sensitivity data were collected by
analyzing drinking water samples fortified with varying concentrations
of nitrate standards. The results are summarized in the validation
study report (NECi 2016b). EPA has determined that the NECi nitrate
reductase method is equally as effective as the approved EPA Method
353.2. The basis for this determination is discussed in Adams and
Wendelken (2016). Therefore, EPA is approving the NECi nitrate
reductase method for the analysis of nitrate and nitrite in drinking
water. The NECi nitrate reductase method can be obtained from the
Nitrate Elimination Company, Inc. (NECi) at Superior Enzymes, Inc., 334
Hecla St., Lake Linden, Michigan 49945.
8. Thermo Fisher Scientific Drinking Water Orthophosphate Method
for Thermo Scientific Gallery Discrete Analyzer (Thermo Fisher 2016a).
The Thermo Fisher orthophosphate drinking water method employing Thermo
Scientific Gallery discrete analyzers is used for the colorimetric
determination of orthophosphate in drinking water. In this method,
orthophosphate is reacted with ammonium molybdate and antimony
potassium tartrate in an acidic medium to form an antimony-phospho-
molybdate complex. The complex is subsequently reduced by ascorbic acid
to form an intensely blue complex that can be measured
spectrophotometrically at 880 nm.
The currently approved methods for the analysis of orthophosphate
in drinking water are listed in 40 CFR 141.23(k)(1). Standard Methods
4500-P E (APHA, 1995) is an approved method that uses ascorbic acid to
reduce reacted orthophosphate into a complex that can be measured
spectrophotometrically. The Thermo Fisher orthophosphate method
incorporates an automated discrete analyzer, which minimizes the use of
chemical reagents, generation of waste and human handling errors.
A validation study was conducted to compare the performance of the
automated Thermo Fisher orthophosphate discrete analyzer method to the
approved Standard Method 4500-P E. Multiple finished drinking water
samples drawn from both ground water and surface water sources were
used in the validation study. Precision, accuracy and sensitivity data
were collected by analyzing drinking water samples fortified with
varying concentrations of orthophosphate standards. The results are
summarized in the validation study report (Thermo Fisher 2016b). EPA
has determined that the Thermo Fisher discrete analyzer method for
orthophosphate is equally as effective as the approved Standard Method
4500-P E. Therefore, EPA is approving the Thermo Fisher method for the
analysis of orthophosphate in treated drinking water. The basis for
this determination is discussed in Adams (2016). The Thermo Fisher
discrete analyzer method for orthophosphate can be obtained from Thermo
Fisher Scientific, Ratastie 2, 01620 Vantaa, Finland.
9. Mitchell Method M5331, Revision 1.2--Determination of Turbidity
by LED or Laser Nephelometry (Mitchell 2016). Mitchell Method M5331,
Revision 1.1 (Mitchell 2009) was approved for the determination of
turbidity in drinking water by light emitting diode (LED) nephelometry
in the August 2009 expedited methods approval action (USEPA 2009). The
currently approved methods for turbidity are listed in 40 CFR
141.74(a)(1) and different sources, including lasers, have been
approved. The Mitchell Method M5331 has been updated to incorporate the
option of using a solid-state laser in place of a LED as the light
source for the turbidimeter. The vendor cites multiple advantages
associated with the use of lasers relative to LEDs (Mitchell 2015).
Mitchell Method M5331, Revision 1.1 specifies a light source of 525
15 nm, and now lasers at 520 nm and 532 nm are readily
available. In addition to
[[Page 46843]]
meeting the specified wavelength range, solid-state lasers can offer
longer source lifetimes, greater stability, and improved stray light
rejection. The updated method is the same as the approved Mitchell
Method M5331, Revision 1.1 relative to the divergence of the light
source measurement area, the detector, and all other instrumental
features. EPA has determined that the updated method is equally as
effective as the promulgated EPA Method 180.1 (USEPA 1993b), which
established the criteria for nephelometric determination of turbidity.
The basis for this determination is discussed in Wendelken and Smith
(2016). Therefore, EPA is approving Mitchell Method M5331, Revision 1.2
for the determination of turbidity in drinking water. Mitchell Method
M5331, Revision 1.2 can be obtained from Leck Mitchell, Ph.D., PE, 656
Independence Valley Drive, Grand Junction, Colorado 81507.
IV. Statutory and Executive Order Reviews
As noted in Section II, under the terms of SDWA Section 1401(1),
this streamlined method approval action is not a rule. Accordingly, the
Congressional Review Act, 5 U.S.C. 801 et seq., as added by the Small
Business Regulatory Enforcement Fairness Act of 1996, does not apply
because this action is not a rule for purposes of 5 U.S.C. 804(3).
Similarly, this action is not subject to the Regulatory Flexibility Act
because it is not subject to notice and comment requirements under the
Administrative Procedure Act or any other statute. In addition, because
this approval action is not a rule but simply makes alternative testing
methods available as options for monitoring under SDWA, EPA has
concluded that other statutes and executive orders generally applicable
to rulemaking do not apply to this approval action.
V. References
Adams. 2016. Memo to the record describing basis for expedited
approval of Thermo Fisher discrete analyzer method for
orthophosphate. February 18, 2016.
Adams and Smith. 2016. Memo to the record describing basis for
expedited approval of Hach Company methods. February 29, 2016.
Adams and Wendelken. 2016. Memo to the record describing basis for
expedited approval of Nitrate Elimination Company Inc. (NECi)
nitrate reductase method. February 9, 2016.
American Public Health Association (APHA). 1995. 19th Edition of
Standard Methods for the Examination of Water and Wastewater,
American Public Health Association, 800 I Street NW., Washington, DC
20001-3710.
American Public Health Association (APHA). 2000a. Standard Method
4500-Cl G-00, Chlorine (Residual)--DPD Colorimetric Method. Approved
by Standard Methods Committee 2000. Standard Methods Online
(Available at https://www.standardmethods.org).
American Public Health Association (APHA). 2000b. Standard Method
5310 C-00, Total Organic Carbon (TOC)--Persulfate-Ultraviolet or
Heated Persulfate Oxidation Method. Approved by Standard Methods
Committee 2000. Standard Methods Online (Available at https://www.standardmethods.org).
ASTM International. 1995. ASTM D 1125-95 A. Standard Test Methods
for Electrical Conductivity and Resistivity of Water. ASTM
International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-
2959. (Available at https://www.astm.org.)
ASTM International. 2002a. ASTM D 1688-02 A, C. Standard Test
Methods for Copper in Water. ASTM International, 100 Barr Harbor
Drive, West Conshohocken, PA 19428-2959. (Available at https://www.astm.org.)
ASTM International. 2002b. ASTM D 3697-02. Standard Test Method for
Antimony in Water. ASTM International, 100 Barr Harbor Drive, West
Conshohocken, PA 19428-2959. (Available at https://www.astm.org.)
ASTM International. 2003a. ASTM D 1253-03. Standard Test Method for
Residual Chlorine in Water. ASTM International, 100 Barr Harbor
Drive, West Conshohocken, PA 19428-2959. (Available at https://www.astm.org.)
ASTM International. 2003b. ASTM D 511-03 A, B. Standard Test Methods
for Calcium and Magnesium in Water. ASTM International, 100 Barr
Harbor Drive, West Conshohocken, PA 19428-2959. (Available at https://www.astm.org.)
ASTM International. 2012a. ASTM D 1688-12 A, C. Standard Test
Methods for Copper in Water. ASTM International, 100 Barr Harbor
Drive, West Conshohocken, PA 19428-2959. (Available at https://www.astm.org.)
ASTM International. 2012b. ASTM D 3697-12. Standard Test Method for
Antimony in Water. ASTM International, 100 Barr Harbor Drive, West
Conshohocken, PA 19428-2959. (Available at https://www.astm.org.)
ASTM International. 2014a. ASTM D 1253-14. Standard Test Method for
Residual Chlorine in Water. ASTM International, 100 Barr Harbor
Drive, West Conshohocken, PA 19428-2959. (Available at https://www.astm.org.)
ASTM International. 2014b. ASTM D 1125-14 A. Standard Test Methods
for Electrical Conductivity and Resistivity of Water. ASTM
International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-
2959. (Available at https://www.astm.org.)
ASTM International. 2014c. ASTM D 511-14 A, B. Standard Test Methods
for Calcium and Magnesium in Water. ASTM International, 100 Barr
Harbor Drive, West Conshohocken, PA 19428-2959. (Available at https://www.astm.org.)
Hach Company. 2000. Hach FilterTrak Method 10133--Determination of
Turbidity by Laser Nephelometry. January 2000. Revision 2.0. 5600
Lindbergh Drive, Loveland, Colorado 80539. (Available at https://www.hach.com.)
Hach Company. 2014. Validation Study Report for Hach Method 10258--
Measurement of Turbidity in Drinking Water by 360 Degree
Nephelometry. December 2014. 5600 Lindbergh Drive, Loveland,
Colorado 80539. (Available at https://www.regulations.gov; docket ID
No. EPA-HQ-OW-2016-0281.)
Hach Company. 2015a. Hach Method 10241--Spectrophotometric
Measurement of Free Chlorine (Cl2) in Finished Drinking
Water. November 2015. Revision 1.2. 5600 Lindbergh Drive, Loveland,
Colorado 80539. (Available at https://www.hach.com.)
Hach Company. 2015b. Validation Study Report for Hach Method 10241--
Spectrophotometric Measurement of Free Chlorine in Drinking Water.
November 2015. 5600 Lindbergh Drive, Loveland, Colorado 80539.
(Available at https://www.regulations.gov; docket ID No. EPA-HQ-OW-
2016-0281.)
Hach Company. 2015c. Hach Method 8026--Spectrophotometric
Measurement of Copper in Finished Drinking Water. December 2015.
Revision 1.2. 5600 Lindbergh Drive, Loveland, Colorado 80539.
(Available at https://www.hach.com.)
Hach Company. 2015d. Validation Study Report for Hach Method 8026--
Spectrophotometric Measurement of Copper in Drinking Water. November
2015. 5600 Lindbergh Drive, Loveland, Colorado 80539. (Available at
https://www.regulations.gov; docket ID No. EPA-HQ-OW-2016-0281.)
Hach Company. 2015e. Hach Method 10261--Total Organic Carbon in
Finished Drinking Water by Catalyzed Ozone Hydroxyl Radical
Oxidation Infrared Analysis. December 2015. Revision 1.2. 5600
Lindbergh Drive, Loveland, Colorado 80539. (Available at https://www.hach.com.)
Hach Company. 2015f. Validation Study Report for Hach Method 10261--
Total Organic Carbon in Finished Drinking Water by Catalyzed Ozone
Hydroxyl Radical Oxidation Infrared Analysis. December 2015. 5600
Lindbergh Drive, Loveland, Colorado 80539. (Available at https://www.regulations.gov; docket ID No. EPA-HQ-OW-2016-0281.)
Hach Company. 2015g. Hach Method 10267--Spectrophotometric
Measurement of Total Organic Carbon (TOC) in Finished Drinking
Water. December 2015. Revision 1.2. 5600 Lindbergh Drive, Loveland,
Colorado 80539. (Available at https://www.hach.com.)
Hach Company. 2015h. Validation Study Report for Hach Method 10267--
Spectrophotometric Measurement of Total Organic Carbon (TOC) in
Finished Drinking Water. December 2015. 5600 Lindbergh Drive,
Loveland, Colorado
[[Page 46844]]
80539. (Available at https://www.regulations.gov; docket ID No. EPA-
HQ-OW-2016-0281.)
Hach Company. 2015i. Hach Method 10272--Spectrophotometric
Measurement of Copper in Finished Drinking Water. December 2015.
Revision 1.2. 5600 Lindbergh Drive, Loveland, Colorado 80539.
(Available at https://www.hach.com.)
Hach Company. 2015j. Validation Study Report for Hach Method 10272--
Spectrophotometric Measurement of Copper in Finished Drinking Water.
December 2015. 5600 Lindbergh Drive, Loveland, Colorado 80539.
(Available at https://www.regulations.gov; docket ID No. EPA-HQ-OW-
2016-0281.)
Hach Company. 2016. Hach Method 10258--Determination of Turbidity by
360[deg] Nephelometry. January 2016. 5600 Lindbergh Drive, Loveland,
Colorado 80539. (Available at https://www.hach.com.)
Mitchell, L. and Mitchell, P. 2009. Mitchell Method M5331--
Determination of Turbidity by LED Nephelometry. March 2009. Revision
1.1. Leck Mitchell, Ph.D., PE, 656 Independence Valley Drive, Grand
Junction, CO 81507. (Available at https://www.regulations.gov; docket
ID No. EPA-HQ-OW-2016-0281.)
Mitchell, L. 2015. Mitchell ATP Submission with Justification for
Revision to Mitchell Method M5331, Revision 1.1. September 2015.
Leck Mitchell, Ph.D., PE, 656 Independence Valley Drive, Grand
Junction, CO 81507. (Available at https://www.regulations.gov; docket
ID No. EPA-HQ-OW-2016-0281.)
Mitchell, L. and Mitchell, P. 2016. Mitchell Method M5331--
Determination of Turbidity by LED or Laser Nephelometry. February
2016. Revision 1.2. Leck Mitchell, Ph.D., PE, 656 Independence
Valley Drive, Grand Junction, CO 81507. (Available at https://www.regulations.gov; docket ID No. EPA-HQ-OW-2016-0281.)
Nitrate Elimination Company, Inc. (NECi). 2016a. Method for Nitrate
Reductase Nitrate-Nitrogen Analysis of Drinking Water. February
2016. Version 1.0. Revision 2.0. Superior Enzymes, Inc., 334 Hecla
Street, Lake Linden, Michigan 49945. (Available at https://www.regulations.gov; docket ID No. EPA-HQ-OW-2016-0281.)
Nitrate Elimination Company, Inc. (NECi). 2016b. Validation Study
Report for NECi Nitrate-Reductase Nitrate plus Nitrite Nitrogen
Method. January 2016. Superior Enzymes, Inc., 334 Hecla Street, Lake
Linden, Michigan 49945. (Available at https://www.regulations.gov;
docket ID No. EPA-HQ-OW-2016-0281.)
Smith, G. 2015. Memo to the record describing basis for expedited
approval of updated methods from ASTM International. December 30,
2015.
Thermo Fisher. 2016a. Thermo Fisher Scientific Drinking Water
Orthophosphate Method for Thermo Scientific Gallery Discrete
Analyzer. February 2016. Revision 5. Thermo Fisher Scientific,
Ratastie 2, 01620 Vantaa, Finland. (Available at https://www.regulations.gov; docket ID No. EPA-HQ-OW-2016-0281.)
Thermo Fisher. 2016b. Validation Study Report for Thermo Fisher
Orthophosphate Discrete Analyzer Method. February 2016. Thermo
Fisher Scientific, Ratastie 2, 01620 Vantaa, Finland. (Available at
https://www.regulations.gov; docket ID No. EPA-HQ-OW-2016-0281.)
USEPA. 1993a. EPA Method 353.2. Revision 2.0, ``Determination of
Nitrate-Nitrite Nitrogen by Automated Colorimetry,'' August 1993.
(Available at https://www.nemi.gov.)
USEPA. 1993b. EPA Method 180.1. Revision 2.0, ``Determination of
Turbidity by Nephelometry,'' August 1993. (Available at https://www.nemi.gov.)
USEPA. 1994. EPA Method 200.7. Revision 4.4, ``Determination of
Metals and Trace Elements in Water and Wastes by Inductively Coupled
Plasma-Atomic Emission Spectrometry,'' May 1994. (Available at
https://www.nemi.gov.)
USEPA. 2009. Expedited Approval of Alternative Test Procedures for
the Analysis of Contaminants Under the Safe Drinking Water Act;
Analysis and Sampling Procedures, 74 FR 38348, August 3, 2009.
Wendelken and Smith. 2016. Memo to record describing basis for
expedited approval of Mitchell Method M5331, Revision 1.2. February
24, 2016.
List of Subjects in 40 CFR Part 141
Environmental protection, Chemicals, Indians-lands,
Intergovernmental relations, Reporting and recordkeeping requirements,
Water supply.
Dated: July 7, 2016.
Peter Grevatt,
Director, Office of Ground Water and Drinking Water.
For the reasons stated in the preamble, 40 CFR part 141 is amended
as follows:
PART 141--NATIONAL PRIMARY DRINKING WATER REGULATIONS
0
1. The authority citation for part 141 continues to read as follows:
Authority: 42 U.S.C. 300f, 300g-1, 300g-2, 300g-3, 300g-4,
300g-5, 300g-6, 300j-4, 300j-9, and 300j-11.
0
2. Appendix A to subpart c of part 141 is amended as follows:
0
a. By revising entries for ``Antimony,'' ``Calcium,'' ``Copper,''
``Conductivity,'' ``Magnesium,'' ``Nitrate,'' ``Nitrite,'' and
``Orthophosphate,'' in the table entitled ``ALTERNATIVE TESTING METHODS
FOR CONTAMINANTS LISTED AT 40 CFR 141.23(k)(1).''
0
b. By revising the entry for ``Turbidity'' in the table entitled
``ALTERNATIVE TESTING METHODS FOR CONTAMINANTS LISTED AT 40 CFR
141.74(a)(1).''
0
c. By revising entries for ``Free Chlorine'' and ``Total Chlorine'' in
the table entitled ``ALTERNATIVE TESTING METHODS FOR DISINFECTANT
RESIDUALS LISTED AT 40 CFR 141.74(a)(2).''
0
d. By revising the entries for ``Free Chlorine'', ``Combined
Chlorine,'' and ``Total Chlorine'' in the table entitled ``ALTERNATIVE
TESTING METHODS FOR DISINFECTANT RESIDUALS LISTED AT 40 CFR
141.131(c)(1).''
0
e. By revising the entire table entitled ``ALTERNATIVE TESTING METHODS
FOR PARAMETERS LISTED AT 40 CFR 141.131(d).''
0
f. By revising footnotes 2, 9, 14, 16, 18, 19, 24-27, 29, and 33.
0
g. By adding footnotes 34-42 to the table.
The revisions and additions read as follows:
Appendix A to Subpart C of Part 141--Alternative Testing Methods
Approved for Analyses Under the Safe Drinking Water Act
* * * * *
Alternative Testing Methods for Contaminants Listed at 40 CFR 141.23(k)(1)
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SM 21st Edition SM 22nd Edition
Contaminant Methodology EPA method \1\ \28\ SM Online \3\ ASTM \4\ Other
--------------------------------------------------------------------------------------------------------------------------------------------------------
* * * * * * *
Antimony................... Hydride-Atomic ................ ................ ................ ................ D 3697-07, -12.. ...............
Absorption.
Atomic ................ 3113 B.......... 3113 B.......... 3113 B-04, B-10. ................ ...............
Absorption;
Furnace.
[[Page 46845]]
Axially viewed 200.5, Revision ................ ................ ................ ................ ...............
inductively 4.2.\2\.
coupled plasma-
atomic emission
spectrometry
(AVICP-AES).
* * * * * * *
Calcium.................... EDTA Titrimetric ................ 3500-Ca B....... 3500-Ca B....... ................ D 511-09, -14 A. ...............
Atomic ................ 3111 B.......... 3111 B.......... ................ D 511-90, -14 B. ...............
Absorption;
Direct
Aspiration.
Inductively ................ 3120 B.......... 3120 B.......... ................ ................ ...............
Coupled Plasma.
Axially viewed 200.5, Revision ................ ................ ................ ................ ...............
inductively 4.2.\2\.
coupled plasma-
atomic emission
spectrometry
(AVICP-AES).
Ion ................ ................ ................ ................ D 6919-09....... ...............
Chromatography.
* * * * * * *
Copper..................... Atomic ................ 3113 B.......... 3113 B.......... 3113 B-04, B-10. D 1688-07, -12 C ...............
Absorption;
Furnace.
Atomic ................ 3111 B.......... 3111 B.......... ................ D 1688-07, -12 A ...............
Absorption;
Direct
Aspiration.
Inductively ................ 3120 B.......... 3120 B.......... ................ ................ ...............
Coupled Plasma.
Axially viewed 200.5, Revision ................ ................ ................ ................ ...............
inductively 4.2.\2\.
coupled plasma-
atomic emission
spectrometry
(AVICP-AES).
Colorimetric.... ................ ................ ................ ................ ................ Hach Method
8026 \35\ Hach
Method
10272.\36\
Conductivity............... Conductance..... ................ 2510 B.......... 2510 B.......... ................ D 1125-14 A..... ...............
* * * * * * *
Magnesium.................. Atomic ................ 3111 B.......... 3111 B.......... ................ D 511-09, -14 B. ...............
Absorption.
Inductively ................ 3120 B.......... 3120 B.......... ................ ................ ...............
Coupled Plasma.
Complexation ................ 3500-Mg B....... 3500-Mg B....... ................ D 511-09, -14 A. ...............
Titrimetric
Methods.
Axially viewed 200.5, Revision ................ ................ ................ ................ ...............
inductively 4.2.\2\.
coupled plasma-
atomic emission
spectrometry
(AVICP-AES).
Ion ................ ................ ................ ................ D 6919-09....... ...............
Chromatography.
* * * * * * *
Nitrate.................... Ion ................ 4110 B.......... 4110 B.......... ................ D 4327-11....... ...............
Chromatography.
Automated ................ 4500-NO3\-\ F... 4500-NO3\-\ F... ................ ................ ...............
Cadmium
Reduction.
Manual Cadmium ................ 4500-NO3\-\ E... 4500-NO3\-\ E... ................ ................ ...............
Reduction.
Ion Selective ................ 4500-NO3\-\ D... 4500-NO3\-\ D... ................ ................ ...............
Electrode.
Reduction/ ................ ................ ................ ................ ................ Systea Easy (1-
Colorimetric. Reagent) \8\
NECi Nitrate-
Reductase.\40\
Colorimetric; ................ ................ ................ ................ ................ Hach TNTplus TM
Direct. 835/836 Method
10206.\23\
Nitrite.................... Ion ................ 4110 B.......... 4110 B.......... ................ D 4327-11....... ...............
Chromatography.
Automated ................ 4500-NO3\-\ F... 4500-NO3\-\ F... ................ ................ ...............
Cadmium
Reduction.
Manual Cadmium ................ 4500-NO3\-\ E... 4500-NO3\-\ E... ................ ................ ...............
Reduction.
Spectrophotometr ................ 4500-NO2\-\ B... 4500-NO2\-\ B... ................ ................ ...............
ic.
Reduction/ ................ ................ ................ ................ ................ Systea Easy (1-
Colorimetric. Reagent) \8\
NECi Nitrate-
Reductase.\40\
Orthophosphate............. Ion ................ 4110 B.......... 4110 B.......... ................ D 4327-11....... ...............
Chromatography.
Colorimetric, ................ 4500-P E........ 4500-P E........ 4500-P E-99..... ................ ...............
ascorbic acid,
single reagent.
Colorimetric, ................ 4500-P F........ 4500-P F........ 4500-P F-99..... ................ Thermo-Fisher
Automated, Discrete
Ascorbic Acid. Analyzer.\41\
* * * * * * *
--------------------------------------------------------------------------------------------------------------------------------------------------------
* * * * *
[[Page 46846]]
Alternative Testing Methods for Contaminants Listed at 40 CFR 141.74(a)(1)
--------------------------------------------------------------------------------------------------------------------------------------------------------
Organism Methodology SM 21st Edition \1\ SM 22nd Edition \28\ SM Online \3\ Other
--------------------------------------------------------------------------------------------------------------------------------------------------------
* * * * * * *
Turbidity.................... Nephelometric 2130 B.................... 2130 B....................
Method.
Laser Nephelometry .......................... .......................... .......................... Mitchell
(on-line). M5271,\10\
Mitchell M5331,
Rev. 1.2.\42\
LED Nephelometry .......................... .......................... .......................... Mitchell
(on-line). M5331,\11\
Mitchell M5331,
Rev. 1.2.\42\
LED Nephelometry .......................... .......................... .......................... AMI
(on-line). Turbiwell.\15\
LED Nephelometry .......................... .......................... .......................... Orion AQ4500.\12\
(portable).
360[deg] .......................... .......................... .......................... Hach Method
Nephelometry. 10258.\39\
--------------------------------------------------------------------------------------------------------------------------------------------------------
Alternative Testing Methods for Disinfectant Residuals Listed at 40 CFR 141.74(a)(2)
--------------------------------------------------------------------------------------------------------------------------------------------------------
Residual Methodology SM 21st Edition \1\ SM 22nd Edition \28\ ASTM \4\ Other
--------------------------------------------------------------------------------------------------------------------------------------------------------
Free Chlorine................ Amperometric 4500-Cl D................. 4500-Cl D................. D 1253-08, -14............ .................
Titration.
DPD Ferrous 4500-Cl F................. 4500-Cl F................. .......................... .................
Titrimetric.
DPD Colorimetric.. 4500-Cl G................. 4500-Cl G................. .......................... Hach Method
10260.\31\
Syringaldazine 4500-Cl H................. 4500-Cl H................. .......................... .................
(FACTS).
On-line Chlorine .......................... .......................... .......................... EPA 334.0.\16\
Analyzer.
Amperometric .......................... .......................... .......................... ChloroSense.\17\
Sensor.
Indophenol .......................... .......................... .......................... Hach Method
Colorimetric. 10241.\34\
Total Chlorine............... Amperometric 4500-Cl D................. 4500-Cl D................. D 1253-08, -14............ .................
Titration.
Amperometric 4500-Cl E................. 4500-Cl E................. .......................... .................
Titration (Low
level
measurement).
DPD Ferrous 4500-Cl F................. 4500-Cl F................. .......................... .................
Titrimetric.
DPD Colorimetric.. 4500-Cl G................. 4500-Cl G................. .......................... Hach Method
10260.\31\
Iodometric 4500-Cl I................. 4500-Cl I................. .......................... .................
Electrode.
On-line Chlorine .......................... .......................... .......................... EPA 334.0.\16\
Analyzer.
Amperometric .......................... .......................... .......................... ChloroSense.\17\
Sensor.
* * * * * * *
--------------------------------------------------------------------------------------------------------------------------------------------------------
* * * * *
Alternative Testing Methods for Disinfectant Residuals Listed at 40 CFR 141.131(c)(1)
--------------------------------------------------------------------------------------------------------------------------------------------------------
Residual Methodology SM 21st Edition \1\ SM 22nd Edition \28\ ASTM \4\ Other
--------------------------------------------------------------------------------------------------------------------------------------------------------
Free Chlorine................ Amperometric 4500-Cl D................. 4500-Cl D................. D 1253-08, -14............ .................
Titration.
DPD Ferrous 4500-Cl F................. 4500-Cl F................. .......................... .................
Titrimetric.
DPD Colorimetric.. 4500-Cl G................. 4500-Cl G................. .......................... Hach Method
10260.\31\
Syringaldazine 4500-Cl H................. 4500-Cl H................. .......................... .................
(FACTS).
Amperometric .......................... .......................... .......................... ChloroSense.\17\
Sensor.
On-line Chlorine .......................... .......................... .......................... EPA 334.0.\16\
Analyzer.
Indophenol .......................... .......................... .......................... Hach Method
Colorimetric. 10241.\34\
Combined Chlorine............ Amperometric 4500-Cl D................. 4500-Cl D................. D 1253-08, -14............ .................
Titration.
DPD Ferrous 4500-Cl F................. 4500-Cl F................. .......................... .................
Titrimetric.
DPD Colorimetric.. 4500-Cl G................. 4500-Cl G................. .......................... Hach Method
10260.\31\
Total Chlorine............... Amperometric 4500-Cl D................. 4500-Cl D................. D 1253-08, -14............ .................
Titration.
Low level 4500-Cl E................. 4500-Cl E................. .......................... .................
Amperometric
Titration.
DPD Ferrous 4500-Cl F................. 4500-Cl F................. .......................... .................
Titrimetric.
DPD Colorimetric.. 4500-Cl G................. 4500-Cl G................. .......................... Hach Method
10260.\31\
Iodometric 4500-Cl I................. 4500-Cl I................. .......................... .................
Electrode.
Amperometric .......................... .......................... .......................... ChloroSense.\17\
Sensor.
On-line Chlorine .......................... .......................... .......................... EPA 334.0.\16\
Analyzer.
* * * * * * *
--------------------------------------------------------------------------------------------------------------------------------------------------------
* * * * *
[[Page 46847]]
Alternative Testing Methods for Parameters Listed at 40 CFR 141.131(d)
--------------------------------------------------------------------------------------------------------------------------------------------------------
SM 21st Edition SM 22nd Edition
Parameter Methodology \1\ \28\ SM Online \3\ EPA Other
--------------------------------------------------------------------------------------------------------------------------------------------------------
Total Organic Carbon (TOC).... High Temperature 5310 B......... 5310 B......... ............... 415.3, Rev 1.2.\19\.. ...........................
Combustion.
Persulfate- 5310 C......... 5310 C......... ............... 415.3, Rev 1.2 \19\.. Hach Method 10267.\38\
Ultraviolet or
Heated
Persulfate
Oxidation.
Wet Oxidation.... 5310 D......... 5310 D......... ............... 415.3, Rev 1.2.\19\.. ...........................
Ozone Oxidation.. ............... ............... ............... ..................... Hach Method 10261.\37\
Specific Ultraviolet Calculation using ............... ............... ............... 415.3, Rev 1.2.\19\.. ...........................
Absorbance (SUVA). DOC and UV254
data.
Dissolved Organic Carbon (DOC) High Temperature 5310 B......... 5310 B......... ............... 415.3, Rev 1.2.\19\.. ...........................
Combustion.
Persulfate- 5310 C......... 5310 C......... ............... 415.3, Rev 1.2.\19\.. ...........................
Ultraviolet or
Heated
Persulfate
Oxidation.
Wet Oxidation.... 5310 D......... 5310 D......... ............... 415.3, Rev 1.2.\19\.. ...........................
Ultraviolet absorption at 254 Spectrophotometry 5910 B......... 5910 B......... 5910 B-11...... 415.3, Rev 1.2.\19\.. ...........................
nm (UV254).
--------------------------------------------------------------------------------------------------------------------------------------------------------
* * * * *
\1\ Standard Methods for the Examination of Water and
Wastewater, 21st edition (2005). Available from American Public
Health Association, 800 I Street, NW., Washington, DC 20001-3710.
\2\ EPA Method 200.5, Revision 4.2. ``Determination of Trace
Elements in Drinking Water by Axially Viewed Inductively Coupled
Plasma-Atomic Emission Spectrometry.'' 2003. EPA/600/R-06/115.
(Available at https://www.epa.gov/water-research/epa-drinking-water-research-methods.)
\3\ Standard Methods Online are available at https://www.standardmethods.org. The year in which each method was approved
by the Standard Methods Committee is designated by the last two
digits in the method number. The methods listed are the only online
versions that may be used.
\4\ Available from ASTM International, 100 Barr Harbor Drive,
West Conshohocken, PA 19428-2959 or https://astm.org. The methods
listed are the only alternative versions that may be used.
* * * * *
\8\ Systea Easy (1-Reagent). ``Systea Easy (1-Reagent) Nitrate
Method,'' February 4, 2009. Available at https://www.nemi.gov or
from Systea Scientific, LLC., 900 Jorie Blvd., Suite 35, Oak Brook,
IL 60523.
\9\ EPA Method 524.3, Version 1.0. ``Measurement of Purgeable
Organic Compounds in Water by Capillary Column Gas Chromatography/
Mass Spectrometry,'' June 2009. EPA 815-B-09-009. Available at the
National Service Center for Environmental Publications (www.epa.gov/nscep). Search ``815B09009''.
\10\ Mitchell Method M5271, Revision 1.1. ``Determination of
Turbidity by Laser Nephelometry,'' March 5, 2009. Available at
https://www.nemi.gov or from Leck Mitchell, Ph.D., PE, 656
Independence Valley Dr., Grand Junction, CO 81507.
\11\ Mitchell Method M5331, Revision 1.1. ``Determination of
Turbidity by LED Nephelometry,'' March 5, 2009. Available at https://www.nemi.gov or from Leck Mitchell, Ph.D., PE, 656 Independence
Valley Dr., Grand Junction, CO 81507.
\12\ Orion Method AQ4500, Revision 1.0. ``Determination of
Turbidity by LED Nephelometry,'' May 8, 2009. Available at https://www.nemi.gov or from Thermo Scientific, 166 Cummings Center,
Beverly, MA 01915, https://www.thermo.com.
* * * * *
\14\ EPA Method 557. ``Determination of Haloacetic Acids,
Bromate, and Dalapon in Drinking Water by Ion Chromatography
Electrospray Ionization Tandem Mass Spectrometry (IC-ESI-MS/MS),''
September 2009. EPA 815-B-09-012. Available at the National Service
Center for Environmental Publications (www.epa.gov/nscep). Search
``815B09012''.
\15\ AMI Turbiwell, ``Continuous Measurement of Turbidity Using
a SWAN AMI Turbiwell Turbidimeter,'' August 2009. Available at
https://www.nemi.gov or from Markus Bernasconi, SWAN Analytische
Instrumente AG, Studbachstrasse 13, CH-8340 Hinwil, Switzerland.
\16\ EPA Method 334.0. ``Determination of Residual Chlorine in
Drinking Water Using an On-line Chlorine Analyzer,'' September 2009.
EPA 815-B-09-013. Available at the National Service Center for
Environmental Publications (www.epa.gov/nscep). Search
``815B09013''.
\17\ ChloroSense. ``Measurement of Free and Total Chlorine in
Drinking Water by Palintest ChloroSense,'' August 2009. Available at
https://www.nemi.gov or from Palintest Ltd, 1455 Jamike Avenue
(Suite 100), Erlanger, KY 41018.
\18\ EPA Method 302.0. ``Determination of Bromate in Drinking
Water using Two-Dimensional Ion Chromatography with Suppressed
Conductivity Detection,'' September 2009. EPA 815-B-09-014.
Available at the National Service Center for Environmental
Publications (www.epa.gov/nscep). Search ``815B09014''.
\19\ EPA 415.3, Revision 1.2. ``Determination of Total Organic
Carbon and Specific UV Absorbance at 254 nm in Source Water and
Drinking Water,'' September 2009. EPA/600/R-09/122. Available at
https://www.epa.gov/water-research/epa-drinking-water-research-methods.
* * * * *
\23\ Hach Company. ``Hach Company TNTplus TM 835/836
Nitrate Method 10206--Spectrophotometric Measurement of Nitrate in
Water and Wastewater,'' January 2011. 5600 Lindbergh Drive, P.O. Box
389, Loveland, Colorado 80539. (Available at https://www.hach.com.)
\24\ EPA Method 525.3. ``Determination of Semivolatile Organic
Chemicals in Drinking Water by Solid Phase Extraction and Capillary
Column Gas Chromatography/Mass Spectrometry (GC/MS),'' February
2012. EPA/600/R-12/010. Available at https://www.epa.gov/water-research/epa-drinking-water-research-methods.
\25\ EPA Method 536. ``Determination of Triazine Pesticides and
their Degradates in Drinking Water by Liquid Chromatography
Electrospray Ionization Tandem Mass Spectrometry (LC/ESI-MS/MS),''
October 2007. EPA 815-B-07-002. Available at the National Service
Center for Environmental Publications (www.epa.gov/nscep). Search
``815B07002''.
\26\ EPA Method 523. ``Determination of Triazine Pesticides and
their Degradates in Drinking Water by Gas Chromatography/Mass
Spectrometry (GC/MS),'' February 2011. EPA 815-R-11-002. Available
at the National Service Center for Environmental Publications
(www.epa.gov/nscep). Search ``815R11002''.
\27\ EPA Method 1623.1. ``Cryptosporidium and Giardia in Water
by Filtration/IMS/FA,'' 2012. EPA-816-R-12-001. Available at the
National Service Center for Environmental Publications (www.epa.gov/nscep). Search ``816R12001''.
\28\ Standard Methods for the Examination of Water and
Wastewater, 22nd edition (2012). Available from American Public
Health Association, 800 I Street, NW., Washington, DC 20001-3710.
\29\ EPA Method 524.4, Version 1.0. ``Measurement of Purgeable
Organic Compounds in Water by Gas Chromatography/Mass Spectrometry
using Nitrogen Purge Gas,'' May 2013. EPA 815-R-13-002. Available at
the National Service Center for Environmental Publications
(www.epa.gov/nscep). Search ``815R13002''.
* * * * *
\31\ Hach Company. ``Hach Method 10260--Determination of
Chlorinated Oxidants (Free and Total) in Water Using Disposable
Planar Reagent-filled Cuvettes and Mesofluidic Channel
Colorimetry,'' April 2013. 5600 Lindbergh Drive, P.O. Box 389,
Loveland, CO 80539. (Available at https://www.hach.com.)
\33\ Tecta EC/TC. ``Techta\TM\ EC/TC Medium and Techta\TM\
Instrument: A Presence/Absence Method for the Simultaneous Detection
of Total Coliforms and Escherichia coli (E. coli) in Drinking
Water,'' version 1.0, May 2014. Available from Veolia Water
Solutions and Technologies, Suite 4697,
[[Page 46848]]
Biosciences Complex, 116 Barrie Street, Kingston, Ontario, Canada,
K7L 3N6.
\34\ Hach Company. ``Hach Method 10241--Spectrophotometric
Measurement of Free Chlorine (Cl2) in Finished Drinking
Water,'' November 2015. Revision 1.2. 5600 Lindbergh Drive, P.O. Box
389, Loveland, CO 80539. (Available at https://www.hach.com.)
\35\ Hach Company. ``Hach Method 8026--Spectrophotometric
Measurement of Copper in Finished Drinking Water,'' December 2015.
Revision 1.2. 5600 Lindbergh Drive, P.O. Box 389, Loveland, CO
80539. (Available at https://www.hach.com.)
\36\ Hach Company. ``Hach Method 10272--Spectrophotometric
Measurement of Copper in Finished Drinking Water,'' December 2015.
Revision 1.2. 5600 Lindbergh Drive, P.O. Box 389, Loveland, CO
80539. (Available at https://www.hach.com.)
\37\ Hach Company. ``Hach Method 10261--Total Organic Carbon in
Finished Drinking Water by Catalyzed Ozone Hydroxyl Radical
Oxidation Infrared Analysis,'' December 2015. Revision 1.2. 5600
Lindbergh Drive, P.O. Box 389, Loveland, CO 80539. (Available at
https://www.hach.com.)
\38\ Hach Company. ``Hach Method 10267--Spectrophotometric
Measurement of Total Organic Carbon (TOC) in Finished Drinking
Water,'' December 2015. Revision 1.2. 5600 Lindbergh Drive, P.O. Box
389, Loveland, CO 80539. (Available at https://www.hach.com.)
\39\ Hach Company. ``Hach Method 10258--Determination of
Turbidity by 360[deg] Nephelometry,'' January 2016. 5600 Lindbergh
Drive, P.O. Box 389, Loveland, CO 80539. (Available at https://www.hach.com.)
\40\ Nitrate Elimination Company, Inc. (NECi). ``Method for
Nitrate Reductase Nitrate-Nitrogen Analysis of Drinking Water,''
February 2016. Superior Enzymes, Inc., 334 Hecla Street, Lake
Linden, Michigan 49945.
\41\ Thermo Fisher. ``Thermo Fisher Scientific Drinking Water
Orthophosphate Method for Thermo Scientific Gallery Discrete
Analyzer,'' February 2016. Revision 5. Thermo Fisher Scientific,
Ratastie 2, 01620 Vantaa, Finland.
\42\ Mitchell Method M5331, Revision 1.2. ``Determination of
Turbidity by LED or Laser Nephelometry,'' February 2016. Available
from Leck Mitchell, Ph.D., PE, 656 Independence Valley Dr., Grand
Junction, CO 81507.
[FR Doc. 2016-16516 Filed 7-18-16; 8:45 am]
BILLING CODE 6560-50-P