Quinclorac; Pesticide Tolerances, 57144-57149 [2017-26078]
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57144
Federal Register / Vol. 82, No. 231 / Monday, December 4, 2017 / Rules and Regulations
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celtuce at 0.50 ppm; cottonseed
subgroup 20C at 0.25 ppm; fennel,
Florence, fresh leaves and stalk at 0.50
ppm; leaf petiole vegetable subgroup
22B at 0.50 ppm; sesame, seed at 0.05
ppm; and Swiss chard at 0.50 ppm.
Additionally, the existing tolerances for
the leaf petioles subgroup 4B and
cotton, undelinted seed are removed as
unnecessary, since they are superseded
by the new tolerances.
VI. Statutory and Executive Order
Reviews
This action establishes tolerances
under FFDCA section 408(d) in
response to a petition submitted to the
Agency. The Office of Management and
Budget (OMB) has exempted these types
of actions from review under Executive
Order 12866, entitled ‘‘Regulatory
Planning and Review’’ (58 FR 51735,
October 4, 1993). Because this action
has been exempted from review under
Executive Order 12866, this action is
not subject to Executive Order 13211,
entitled ‘‘Actions Concerning
Regulations That Significantly Affect
Energy Supply, Distribution, or Use’’ (66
FR 28355, May 22, 2001); Executive
Order 13045, entitled ‘‘Protection of
Children from Environmental Health
Risks and Safety Risks’’ (62 FR 19885,
April 23, 1997); or Executive Order
13771, entitled ‘‘Reducing Regulations
and Controlling Regulatory Costs’’ (82
FR 9339, February 3, 2017). This action
does not contain any information
collections subject to OMB approval
under the Paperwork Reduction Act
(PRA) (44 U.S.C. 3501 et seq.), nor does
it require any special considerations
under Executive Order 12898, entitled
‘‘Federal Actions to Address
Environmental Justice in Minority
Populations and Low-Income
Populations’’ (59 FR 7629, February 16,
1994).
Since tolerances and exemptions that
are established on the basis of a petition
under FFDCA section 408(d), such as
the tolerance in this final rule, do not
require the issuance of a proposed rule,
the requirements of the Regulatory
Flexibility Act (RFA) (5 U.S.C. 601 et
seq.), do not apply.
This action directly regulates growers,
food processors, food handlers, and food
retailers, not States or tribes, nor does
this action alter the relationships or
distribution of power and
responsibilities established by Congress
in the preemption provisions of FFDCA
section 408(n)(4). As such, the Agency
has determined that this action will not
have a substantial direct effect on States
or tribal governments, on the
relationship between the national
government and the States or tribal
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17:52 Dec 01, 2017
Jkt 244001
governments, or on the distribution of
power and responsibilities among the
various levels of government or between
the Federal Government and Indian
tribes. Thus, the Agency has determined
that Executive Order 13132, entitled
‘‘Federalism’’ (64 FR 43255, August 10,
1999) and Executive Order 13175,
entitled ‘‘Consultation and Coordination
with Indian Tribal Governments’’ (65 FR
67249, November 9, 2000) do not apply
to this action. In addition, this action
does not impose any enforceable duty or
contain any unfunded mandate as
described under Title II of the Unfunded
Mandates Reform Act (UMRA) (2 U.S.C.
1501 et seq.).
This action does not involve any
technical standards that would require
Agency consideration of voluntary
consensus standards pursuant to section
12(d) of the National Technology
Transfer and Advancement Act
(NTTAA) (15 U.S.C. 272 note).
§ 180.222 Prometryn; tolerances for
residues.
VII. Congressional Review Act
Sesame, seed ...........................
Swiss chard ..............................
Pursuant to the Congressional Review
Act (5 U.S.C. 801 et seq.), EPA will
submit a report containing this rule and
other required information to the U.S.
Senate, the U.S. House of
Representatives, and the Comptroller
General of the United States prior to
publication of the rule in the Federal
Register. This action is not a ‘‘major
rule’’ as defined by 5 U.S.C. 804(2).
(a) * * *
Parts per
million
Commodity
*
*
*
*
Celtuce ......................................
*
*
*
0.50
*
Cottonseed subgroup 20C .......
*
*
*
*
*
*
*
*
*
*
*
0.25
Fennel, Florence, fresh leaves
and stalk ................................
Leaf petiole vegetable subgroup 22B .............................
*
*
*
0.50
0.50
*
*
0.05
0.50
*
[FR Doc. 2017–26083 Filed 12–1–17; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
List of Subjects in 40 CFR Part 180
[EPA–HQ–OPP–2016–0384; FRL–9970–05]
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
Quinclorac; Pesticide Tolerances
Dated: November 15, 2017.
Michael L. Goodis,
Director, Registration Division, Office of
Pesticide Programs.
SUMMARY:
Therefore, 40 CFR chapter I is
amended as follows:
PART 180—[AMENDED]
1. The authority citation for part 180
continues to read as follows:
■
Authority: 21 U.S.C. 321(q), 346a and 371.
2. In § 180.222:
i. Remove the entries from the table in
paragraph (a) for ‘‘Cotton, undelinted
seed’’ and ‘‘Leaf petioles subgroup 4B’’.
■ ii. Add alphabetically entries to the
table in paragraph (a) for ‘‘Celtuce’’;
‘‘Cottonseed subgroup 20C’’; ‘‘Fennel,
Florence, fresh leaves and stalk’’; ‘‘Leaf
petiole vegetable subgroup 22B’’;
‘‘Sesame, seed’’; and ‘‘Swiss chard’’.
The additions read as follows:
■
■
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Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
This regulation establishes
tolerances for residues of quinclorac in
or on the bushberry subgroup 13–07B,
the caneberry subgroup 13–07A, and
asparagus. Interregional Research
Project Number 4 (IR–4) requested these
tolerances under the Federal Food,
Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective
December 4, 2017. Objections and
requests for hearings must be received
on or before February 2, 2018, and must
be filed in accordance with the
instructions provided in 40 CFR part
178 (see also Unit I.C. of the
SUPPLEMENTARY INFORMATION).
ADDRESSES: The docket for this action,
identified by docket identification (ID)
number EPA–HQ–OPP–2016–0384, is
available at https://www.regulations.gov
or at the Office of Pesticide Programs
Regulatory Public Docket (OPP Docket)
in the Environmental Protection Agency
Docket Center (EPA/DC), West William
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Jefferson Clinton Bldg., Rm. 3334, 1301
Constitution Ave. NW., Washington, DC
20460–0001. The Public Reading Room
is open from 8:30 a.m. to 4:30 p.m.,
Monday through Friday, excluding legal
holidays. The telephone number for the
Public Reading Room is (202) 566–1744,
and the telephone number for the OPP
Docket is (703) 305–5805. Please review
the visitor instructions and additional
information about the docket available
at https://www.epa.gov/dockets.
FOR FURTHER INFORMATION CONTACT:
Michael Goodis, Registration Division
(7505P), Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave. NW., Washington,
DC 20460–0001; main telephone
number: (703) 305–7090; email address:
RDFRNotices@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
A. Does this action apply to me?
You may be potentially affected by
this action if you are an agricultural
producer, food manufacturer, or
pesticide manufacturer. The following
list of North American Industrial
Classification System (NAICS) codes is
not intended to be exhaustive, but rather
provides a guide to help readers
determine whether this document
applies to them. Potentially affected
entities may include:
• Crop production (NAICS code 111).
• Animal production (NAICS code
112).
• Food manufacturing (NAICS code
311).
• Pesticide manufacturing (NAICS
code 32532).
B. How can I get electronic access to
other related information?
You may access a frequently updated
electronic version of EPA’s tolerance
regulations at 40 CFR part 180 through
the Government Printing Office’s e-CFR
site at https://www.ecfr.gov/cgi-bin/textidx?&c=ecfr&tpl=/ecfrbrowse/Title40/
40tab_02.tpl.
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C. How can I file an objection or hearing
request?
Under FFDCA section 408(g), 21
U.S.C. 346a, any person may file an
objection to any aspect of this regulation
and may also request a hearing on those
objections. You must file your objection
or request a hearing on this regulation
in accordance with the instructions
provided in 40 CFR part 178. To ensure
proper receipt by EPA, you must
identify docket ID number EPA–HQ–
OPP–2016–0384 in the subject line on
the first page of your submission. All
objections and requests for a hearing
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must be in writing, and must be
received by the Hearing Clerk on or
before February 2, 2018. Addresses for
mail and hand delivery of objections
and hearing requests are provided in 40
CFR 178.25(b).
In addition to filing an objection or
hearing request with the Hearing Clerk
as described in 40 CFR part 178, please
submit a copy of the filing (excluding
any Confidential Business Information
(CBI)) for inclusion in the public docket.
Information not marked confidential
pursuant to 40 CFR part 2 may be
disclosed publicly by EPA without prior
notice. Submit the non-CBI copy of your
objection or hearing request, identified
by docket ID number EPA–HQ–OPP–
2016–0384, by one of the following
methods:
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the online
instructions for submitting comments.
Do not submit electronically any
information you consider to be CBI or
other information whose disclosure is
restricted by statute.
• Mail: OPP Docket, Environmental
Protection Agency Docket Center (EPA/
DC), (28221T), 1200 Pennsylvania Ave.
NW., Washington, DC 20460–0001.
• Hand Delivery: To make special
arrangements for hand delivery or
delivery of boxed information, please
follow the instructions at https://
www.epa.gov/dockets/contacts.html.
Additional instructions on
commenting or visiting the docket,
along with more information about
dockets generally, is available at https://
www.epa.gov/dockets.
II. Summary of Petitioned-For
Tolerance
In the Federal Register of November
30, 2016 (81 FR 86312) (FRL–9954–06),
EPA issued a document pursuant to
FFDCA section 408(d)(3), 21 U.S.C.
346a(d)(3), announcing the filing of a
pesticide petition (PP 6E8488) by IR–4
Project Headquarters, Rutgers, The State
University of NJ, 500 College Road East,
Suite 201 W, Princeton, NJ 08540. The
petition requested that 40 CFR part 180
be amended by establishing tolerances
for residues of the herbicide quinclorac,
3,7-dichloro-8-quinolinecarboxylic acid
in or on asparagus at 0.06 parts per
million (ppm); the bushberry subgroup
13–07B, except lowbush blueberry at 0.6
ppm; and the caneberry subgroup
13–07A at 0.06 ppm. That document
referenced a summary of the petition
prepared by Albaugh, the registrant,
which is available in the docket, https://
www.regulations.gov. There were no
comments received in response to the
notice of filing.
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Based upon review of the data
supporting the petition, EPA has
modified the levels at which the
tolerances are being established. The
reason for these changes is explained in
Unit IV.C.
III. Aggregate Risk Assessment and
Determination of Safety
Section 408(b)(2)(A)(i) of FFDCA
allows EPA to establish a tolerance (the
legal limit for a pesticide chemical
residue in or on a food) only if EPA
determines that the tolerance is ‘‘safe.’’
Section 408(b)(2)(A)(ii) of FFDCA
defines ‘‘safe’’ to mean that ‘‘there is a
reasonable certainty that no harm will
result from aggregate exposure to the
pesticide chemical residue, including
all anticipated dietary exposures and all
other exposures for which there is
reliable information.’’ This includes
exposure through drinking water and in
residential settings, but does not include
occupational exposure. Section
408(b)(2)(C) of FFDCA requires EPA to
give special consideration to exposure
of infants and children to the pesticide
chemical residue in establishing a
tolerance and to ‘‘ensure that there is a
reasonable certainty that no harm will
result to infants and children from
aggregate exposure to the pesticide
chemical residue. . . .’’
Consistent with FFDCA section
408(b)(2)(D), and the factors specified in
FFDCA section 408(b)(2)(D), EPA has
reviewed the available scientific data
and other relevant information in
support of this action. EPA has
sufficient data to assess the hazards of
and to make a determination on
aggregate exposure for quinclorac
including exposure resulting from the
tolerances established by this action.
EPA’s assessment of exposures and risks
associated with quinclorac follows.
A. Toxicological Profile
EPA has evaluated the available
toxicity data and considered its validity,
completeness, and reliability as well as
the relationship of the results of the
studies to human risk. EPA has also
considered available information
concerning the variability of the
sensitivities of major identifiable
subgroups of consumers, including
infants and children.
Subchronic toxicity of quinclorac
includes decreased body weight gains,
increased water intake, increased liver
enzymes (SGOT, SGPT) and focal
chronic interstitial nephritis (rats).
Chronic toxic effects of quinclorac
include body weight decrement,
increase in kidney and liver weights,
and hydropic degeneration of the
kidneys (dogs). At high doses, chronic
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toxicity also includes increased
incidences of pancreatic acinar cell
hyperplasia and adenomas (rats).
Neurotoxic effects were not observed in
any of the acute, subchronic, and
chronic studies with quinclorac.
There was no increased qualitative or
quantitative fetal or offspring
susceptibility in the prenatal
developmental or postnatal
reproduction studies. Developmental
toxicity in the rabbit consisted of
increased resorptions, post-implantation
loss, decreased number of live fetuses,
and reduced fetal body weight. These
effects occurred at much higher doses
than the maternal effects of decreased
food consumption and increased water
consumption and decreased body
weight gain. In the rat, no
developmental toxicity was observed at
the highest dose tested (438 mg/kg/day).
In the 2-generation reproduction study,
parental toxicity and offspring toxicity
occurred at the same dose. Parental
toxicity consisted of reduced body
weight in both sexes during premating
and lactation periods. Offspring toxicity
consisted of decreased pup weight,
developmental delays and possible
marginal effect on pup viability. No
reproductive toxicity occurred at the
highest dose tested (480 mg/kg/day).
There are no mutagenicity concerns.
Quinclorac is not mutagenic in bacterial
assays and does not cause unscheduled
DNA damage in primary rat
hepatocytes. There is also no evidence
of a genotoxic response in whole animal
test systems (in vivo mouse bone
marrow micronucleus assay).
Quinclorac was negative in a
mammalian cell in vitro cytogenetic
chromosomal aberration assay in
Chinese hamster ovary cells (CHO).
Quinclorac was classified by the Agency
as a group D carcinogen—not
classifiable as to human carcinogenicity.
Quantification of cancer risk is not
required because the chronic RfD will
adequately account for all chronic
effects, including carcinogenicity, that
may result from exposure to quinclorac.
Specific information on the studies
received and the nature of the adverse
effects caused by quinclorac as well as
the no-observed-adverse-effect-level
(NOAEL) and the lowest-observedadverse-effect-level (LOAEL) from the
toxicity studies can be found at https://
www.regulations.gov in the document
titled ‘‘Quinclorac: Human Health Risk
Assessment for New Proposed Use on
Bushberry Subgroup 13–07B, Caneberry
Subgroup 13–07A, and Asparagus’’ on
pages 41–46 in docket ID number EPA–
HQ–OPP–2016–0384.
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B. Toxicological Points of Departure/
Levels of Concern
Once a pesticide’s toxicological
profile is determined, EPA identifies
toxicological points of departure (POD)
and levels of concern to use in
evaluating the risk posed by human
exposure to the pesticide. For hazards
that have a threshold below which there
is no appreciable risk, the toxicological
POD is used as the basis for derivation
of reference values for risk assessment.
PODs are developed based on a careful
analysis of the doses in each
toxicological study to determine the
dose at which no adverse effects are
observed (the NOAEL) and the lowest
dose at which adverse effects of concern
are identified (the LOAEL). Uncertainty/
safety factors are used in conjunction
with the POD to calculate a safe
exposure level—generally referred to as
a population-adjusted dose (PAD) or a
reference dose (RfD)—and a safe margin
of exposure (MOE). For non-threshold
risks, the Agency assumes that any
amount of exposure will lead to some
degree of risk. Thus, the Agency
estimates risk in terms of the probability
of an occurrence of the adverse effect
expected in a lifetime. For more
information on the general principles
EPA uses in risk characterization and a
complete description of the risk
assessment process, see https://
www2.epa.gov/pesticide-science-andassessing-pesticide-risks/assessinghuman-health-risk-pesticides.
A summary of the toxicological
endpoints for quinclorac used for
human risk assessment is discussed in
Unit III.B. of the final rule published in
the Federal Register of November 29,
2013 (78 FR 71523) (FRL–9902–15).
C. Exposure Assessment
1. Dietary exposure from food and
feed uses. In evaluating dietary
exposure to quinclorac, EPA considered
exposure under the petitioned-for
tolerances as well as all existing
quinclorac tolerances in 40 CFR
180.463. EPA assessed dietary
exposures from quinclorac in food as
follows:
i. Acute exposure. Quantitative acute
dietary exposure and risk assessments
are performed for a food-use pesticide,
if a toxicological study has indicated the
possibility of an effect of concern
occurring as a result of a 1-day or single
exposure.
For the general population including
infants and children, no such effects
were identified in the toxicological
studies for quinclorac; therefore, a
quantitative acute dietary exposure
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assessment for these population groups
is unnecessary.
However, for females 13 to 49 years of
age, such effects were identified for
quinclorac. In estimating acute dietary
exposure, EPA used food consumption
information from the 2003–2008 United
States Department of Agriculture’s
(USDA) National Health and Nutrition
Examination Survey, What We Eat in
America, (NHANES/WWEIA). As to
residue levels in food, EPA assumed
tolerance-level residues and 100 percent
crop treated (PCT).
ii. Chronic exposure. In conducting
the chronic dietary exposure assessment
EPA used the food consumption data
from the 2003–2008 USDA’s NHANES/
WWEIA. As to residue levels in food,
EPA assumed tolerance-level residues
and 100 PCT.
iii. Cancer. Based on the current
cancer classification of quinclorac,
quantification of cancer risk is not
required and the chronic RfD will
adequately account for all chronic
effects, including carcinogenicity, that
may result from exposure to quinclorac.
iv. Anticipated residue and PCT
information. EPA did not use
anticipated residue or PCT information
in the dietary assessment for quinclorac.
Tolerance level residues and 100 PCT
were assumed for all food commodities.
2. Dietary exposure from drinking
water. The Agency used screening level
water exposure models in the dietary
exposure analysis and risk assessment
for quinclorac in drinking water. These
simulation models take into account
data on the physical, chemical, and fate/
transport characteristics of quinclorac.
Further information regarding EPA
drinking water models used in pesticide
exposure assessment can be found at
https://www2.epa.gov/pesticide-scienceand-assessing-pesticide-risks/aboutwater-exposure-models-used-pesticide.
Based on the Tier 1 Rice Model and
the Pesticide Water Calculator-Ground
Water exposure model, the estimated
drinking water concentrations (EDWCs)
of quinclorac for acute exposures are
estimated to be 511 parts per billion
(ppb) for surface water and 817 ppb for
ground water and for chronic exposures
are estimated to be 481 ppb for surface
water and 543 ppb for ground water.
Modeled estimates of drinking water
concentrations were directly entered
into the dietary exposure model. For the
acute dietary risk assessment, the water
concentration value of 817 ppb was
used to assess the contribution to
drinking water. For the chronic dietary
risk assessment, the water concentration
of value 543 ppb was used to assess the
contribution to drinking water.
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3. From non-dietary exposure. The
term ‘‘residential exposure’’ is used in
this document to refer to nonoccupational, non-dietary exposure
(e.g., for lawn and garden pest control,
indoor pest control, termiticides, and
flea and tick control on pets).
Quinclorac is currently registered for
the following uses that could result in
residential exposures: Turf grass and
ornamentals. EPA assessed residential
exposure using the following
assumptions: Short-term residential
handler inhalation exposure is expected
from the existing uses. The quantitative
exposure/risk assessment developed for
residential handlers is based on the
following scenarios: Loading/applying
granules for belly grinder; loading/
applying granules for push type rotary
spreader; loading/applying granules for
a spoon; loading/applying granules for a
cup and shaker can; applying granules
by hand; mixing/loading/applying
liquid and dry flowable formulations via
manually-pressurized handwand, a
hose-end sprayer, a backpack, and a
sprinkler can; and mixing/loading/
applying ready-to-use formulation via a
trigger sprayer, and a hose-end sprayer.
Post-application short-term dermal
and incidental oral exposure is expected
from quinclorac treated turf in
residential settings (i.e., lawns). Dermal
exposures were not quantified due to a
lack of a dermal toxicological endpoint.
Incidental oral exposure risk estimates
were calculated for hand-to-mouth,
object-to-mouth, and soil ingestion
exposures for 1 to <2-year old children
playing in the treated turf. Even though
there is a granular product, an
assessment for episodic granular
ingestion was not done since there is no
applicable endpoint (i.e., no acute
dietary point of departure for children).
The worst-case residential exposure
scenario used in the adult aggregate
assessment reflects inhalation exposure
from residential handlers mixing/
loading/applying water-dispersible
granule/dry flowable formulations with
a manually-pressurized handwand and/
or backpack equipment.
The worst-case residential exposure
scenario used in the children 1<2 years
old aggregate assessment reflects handto-mouth exposures from postapplication exposure to treated turf.
Further information regarding EPA
standard assumptions and generic
inputs for residential exposures may be
found at https://www2.epa.gov/pesticidescience-and-assessing-pesticide-risks/
standard-operating-proceduresresidential-pesticide.
4. Cumulative effects from substances
with a common mechanism of toxicity.
Section 408(b)(2)(D)(v) of FFDCA
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requires that, when considering whether
to establish, modify, or revoke a
tolerance, the Agency consider
‘‘available information’’ concerning the
cumulative effects of a particular
pesticide’s residues and ‘‘other
substances that have a common
mechanism of toxicity.’’
EPA has not found quinclorac to share
a common mechanism of toxicity with
any other substances, and quinclorac
does not appear to produce a toxic
metabolite produced by other
substances. For the purposes of this
tolerance action, therefore, EPA has
assumed that quinclorac does not have
a common mechanism of toxicity with
other substances. For information
regarding EPA’s efforts to determine
which chemicals have a common
mechanism of toxicity and to evaluate
the cumulative effects of such
chemicals, see EPA’s Web site at https://
www2.epa.gov/pesticide-science-andassessing-pesticide-risks/cumulativeassessment-risk-pesticides.
D. Safety Factor for Infants and
Children
1. In general. Section 408(b)(2)(C) of
FFDCA provides that EPA shall apply
an additional tenfold (10X) margin of
safety for infants and children in the
case of threshold effects to account for
prenatal and postnatal toxicity and the
completeness of the database on toxicity
and exposure unless EPA determines
based on reliable data that a different
margin of safety will be safe for infants
and children. This additional margin of
safety is commonly referred to as the
FQPA Safety Factor (SF). In applying
this provision, EPA either retains the
default value of 10X, or uses a different
additional safety factor when reliable
data available to EPA support the choice
of a different factor.
2. Prenatal and postnatal sensitivity.
The toxicology database for quinclorac
consists of developmental toxicity
studies in rats and rabbits and a
2-generation reproduction study in rats.
There is no indication of increased
qualitative or quantitative susceptibility
of rats or rabbit fetuses to in utero
and/or postnatal exposure in the
developmental and reproductive
toxicity data.
3. Conclusion. EPA has determined
that reliable data show the safety of
infants and children would be
adequately protected if the FQPA SF
were reduced to 1x. That decision is
based on the following findings:
i. The toxicity database for quinclorac
is complete.
ii. There is no indication that
quinclorac is a neurotoxic chemical and
there is no need for a developmental
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57147
neurotoxicity study or additional UFs to
account for neurotoxicity.
iii. There is no evidence that
quinclorac results in increased
susceptibility in in utero rats or rabbits
in the prenatal developmental studies or
in young rats in the 2-generation
reproduction study.
iv. There are no residual uncertainties
identified in the exposure databases.
The dietary food exposure assessments
were performed based on 100 PCT and
tolerance-level residues. EPA made
conservative (protective) assumptions in
the ground and surface water modeling
used to assess exposure to quinclorac in
drinking water. EPA used similarly
conservative assumptions to assess postapplication exposure of children as well
as incidental oral exposure of toddlers.
These assessments will not
underestimate the exposure and risks
posed by quinclorac.
E. Aggregate Risks and Determination of
Safety
EPA determines whether acute and
chronic dietary pesticide exposures are
safe by comparing aggregate exposure
estimates to the acute PAD (aPAD) and
chronic PAD (cPAD). For linear cancer
risks, EPA calculates the lifetime
probability of acquiring cancer given the
estimated aggregate exposure. Short-,
intermediate-, and chronic-term risks
are evaluated by comparing the
estimated aggregate food, water, and
residential exposure to the appropriate
PODs to ensure that an adequate MOE
exists.
1. Acute risk. An acute aggregate risk
assessment takes into account acute
exposure estimates from dietary
consumption of food and drinking
water. For the general population
including infants and children, no
adverse effect resulting from a single
oral exposure was identified and no
acute dietary endpoint was selected.
Therefore, quinclorac is not expected to
pose an acute risk to these population
groups. However, an adverse effect was
identified for females 13 to 49 years of
age, and therefore an acute aggregate
risk assessment was performed for this
population group.
Using the exposure assumptions
discussed in this unit for acute
exposure, the acute dietary exposure
from food and water to quinclorac will
occupy 2.4% of the aPAD for females 13
to 49 years old, the only population
group of concern.
2. Chronic risk. Using the exposure
assumptions described in this unit for
chronic exposure, EPA has concluded
that chronic exposure to quinclorac
from food and water will utilize 9.4% of
the cPAD for all infants <1 year old, the
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population group receiving the greatest
exposure. Based on the explanation in
Unit III.C.3., regarding residential use
patterns, chronic residential exposure to
residues of quinclorac is not expected.
3. Short-term risk. Short-term
aggregate exposure takes into account
short-term residential exposure plus
chronic exposure to food and water
(considered to be a background
exposure level).
Quinclorac is currently registered for
uses that could result in short-term
residential exposure, and the Agency
has determined that it is appropriate to
aggregate chronic exposure through food
and water with short-term residential
exposures to quinclorac.
Using the exposure assumptions
described in this unit for short-term
exposures, EPA has concluded the
combined short-term food, water, and
residential exposures result in aggregate
MOEs of 2,100 for adults and 1,500 for
children 1<2 years old. Because EPA’s
level of concern for quinclorac is a MOE
of 100 or below, these MOEs are not of
concern.
4. Intermediate-term risk.
Intermediate-term aggregate exposure
takes into account intermediate-term
residential exposure plus chronic
exposure to food and water (considered
to be a background exposure level).
Intermediate-term aggregate exposure
takes into account intermediate-term
residential exposure plus chronic
exposure to food and water (considered
to be a background exposure level). An
intermediate-term adverse effect was
identified, however, quinclorac is not
registered for any use patterns that
would result in intermediate-term
residential exposure; therefore, an
intermediate-term aggregate risk
assessment was not performed nor
required. In addition, since the shortand intermediate-term PODs are the
same, the estimates for short-term
duration are protective of intermediateterm duration.
5. Aggregate cancer risk for U.S.
population. Based on the discussion in
Unit III.A., EPA considers the chronic
aggregate risk assessment to be
protective of any aggregate cancer risk.
As there is no chronic risk of concern,
EPA does not expect any cancer risk to
the U.S. population from aggregate
exposure to quinclorac.
6. Determination of safety. Based on
these risk assessments, EPA concludes
that there is a reasonable certainty that
no harm will result to the general
population, or to infants and children
from aggregate exposure to quinclorac
residues.
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IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate analytical methods (gas
chromatography/electron capture
detector (GC/ECD)) are available for
enforcing quinclorac tolerances on plant
and livestock commodities. The
methods have undergone successful
agency method validation trials and
have been submitted to the Food and
Drug Administration (FDA) for
publication in the Pesticide Analytical
Manual (PAM) II as the tolerance
enforcement methods. The Limit of
Quantitation (LOQ) of both methods is
0.05 ppm for all matrices.
Other adequate LC/MS/MS based
analytical methods, BASF Method
D9708/02 (for quinclorac) and BASF
Method D9806/02 (for quinclorac
methyl ester), are available for data
collection and tolerance enforcement of
residues of quinclorac and its methyl
ester metabolite in/on plant
commodities. The validated LOQ for
both methods is 0.05 ppm. Both
methods monitor two ion transitions.
The Agency concurred with BASF’s
proposal to designate BASF Method
D9708/02 and BASF Method D9806/02
as the new tolerance enforcement
methods for quinclorac and quinclorac
methy ester, respectively. These LC/MS/
MS enforcement analytical methods
without the methylation step are
preferable to the previous GC/ECD
method.
The method may be requested from:
Chief, Analytical Chemistry Branch,
Environmental Science Center, 701
Mapes Rd., Ft. Meade, MD 20755–5350;
telephone number: (410) 305–2905;
email address: residuemethods@
epa.gov.
B. International Residue Limits
In making its tolerance decisions, EPA
seeks to harmonize U.S. tolerances with
international standards whenever
possible, consistent with U.S. food
safety standards and agricultural
practices. EPA considers the
international maximum residue limits
(MRLs) established by the Codex
Alimentarius Commission (Codex), as
required by FFDCA section 408(b)(4).
The Codex Alimentarius is a joint
United Nations Food and Agriculture
Organization/World Health
Organization food standards program,
and it is recognized as an international
food safety standards-setting
organization in trade agreements to
which the United States is a party. EPA
may establish a tolerance that is
different from a Codex MRL; however,
FFDCA section 408(b)(4) requires that
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EPA explain the reasons for departing
from the Codex level.
The Codex has not established any
MRLs for quinclorac on any of the crops
covered by this document.
C. Revisions to Petitioned-For
Tolerances
Using the amended residue data in
the Organization for Economic
Cooperation and Development (OECD)
tolerance calculation procedures, the
Agency is establishing the tolerance of
0.08 ppm for combined residues of
quinclorac and its methyl ester
metabolite, in/on the bushberry
subgroup 13–07B, the caneberry
subgroup 13–07A, and asparagus. The
tolerance of 0.08 ppm in/on the
caneberry subgroup 13–07A and
asparagus is higher than the petitionedfor tolerance (0.06 ppm) because the
quinclorac residue values from the
submitted field trial data did not
include the residue values of methyl
ester metabolite. However, the tolerance
in/on the bushberry subgroup 13–07B is
much lower than the petitioned-for
tolerance (0.6 ppm). In blueberry trials,
the petitioner included the single
lowbush blueberry trial (ME03) in the
tolerance calculation for bushberry
subgroup 13–07B. Trial ME03 gives a
quinclorac residue value (HAFT: 0.374
ppm) that is approximately sixteen
times greater than the residue value
(HAFT: 0.024 ppm) in/on blueberries
from the six highbush blueberry trials.
The difference in residue value is
largely attributed to application
patterns. The single lowbush blueberry
sample (ME03) was subjected to two
applications—one broadcast to the
ground, the other broadcast to the
foliage, whereas samples of highbush
blueberry (subgroup 13–07B) were
conducted with banded soil application
twice. After excluding ME03 the
tolerance value of blueberry from the
OECD calculator (0.08 ppm) is
significantly lower than the proposed
tolerance (0.6 ppm).
Lastly, the Agency is modifying the
proposed commodity definition of
‘‘Bushberry Subgroup 13–07B, except
lowbush blueberry’’ to ‘‘Bushberry
Subgroup 13–07B’’ because the lowbush
blueberry tolerance is covered by the
established tolerance at 1.5 ppm in/on
berry, low growing, except strawberry,
subgroup 13–07H.
V. Conclusion
Therefore, tolerances are established
for residues of quinclorac, 3,7-dichloro8-quinolinecarboxylic acid, in or on
asparagus at 0.08 ppm; the bushberry,
subgroup 13–07B at 0.08 ppm; and the
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caneberry subgroup 13–07A at 0.08
ppm.
VI. Statutory and Executive Order
Reviews
This action establishes tolerances
under FFDCA section 408(d) in
response to a petition submitted to the
Agency. The Office of Management and
Budget (OMB) has exempted these types
of actions from review under Executive
Order 12866, entitled ‘‘Regulatory
Planning and Review’’ (58 FR 51735,
October 4, 1993). Because this action
has been exempted from review under
Executive Order 12866, this action is
not subject to Executive Order 13211,
entitled ‘‘Actions Concerning
Regulations That Significantly Affect
Energy Supply, Distribution, or Use’’ (66
FR 28355, May 22, 2001); Executive
Order 13045, entitled ‘‘Protection of
Children from Environmental Health
Risks and Safety Risks’’ (62 FR 19885,
April 23, 1997); or Executive Order
13771, entitled ‘‘Reducing Regulations
and Controlling Regulatory Costs’’ (82
FR 9339, February 3, 2017). This action
does not contain any information
collections subject to OMB approval
under the Paperwork Reduction Act
(PRA) (44 U.S.C. 3501 et seq.), nor does
it require any special considerations
under Executive Order 12898, entitled
‘‘Federal Actions to Address
Environmental Justice in Minority
Populations and Low-Income
Populations’’ (59 FR 7629, February 16,
1994).
Since tolerances and exemptions that
are established on the basis of a petition
under FFDCA section 408(d), such as
the tolerance in this final rule, do not
require the issuance of a proposed rule,
the requirements of the Regulatory
Flexibility Act (RFA) (5 U.S.C. 601 et
seq.), do not apply.
This action directly regulates growers,
food processors, food handlers, and food
retailers, not States or tribes, nor does
this action alter the relationships or
distribution of power and
responsibilities established by Congress
in the preemption provisions of FFDCA
section 408(n)(4). As such, the Agency
has determined that this action will not
have a substantial direct effect on States
or tribal governments, on the
relationship between the national
government and the States or tribal
governments, or on the distribution of
power and responsibilities among the
various levels of government or between
the Federal Government and Indian
tribes. Thus, the Agency has determined
that Executive Order 13132, entitled
‘‘Federalism’’ (64 FR 43255, August 10,
1999) and Executive Order 13175,
entitled ‘‘Consultation and Coordination
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17:52 Dec 01, 2017
Jkt 244001
with Indian Tribal Governments’’ (65 FR
67249, November 9, 2000) do not apply
to this action. In addition, this action
does not impose any enforceable duty or
contain any unfunded mandate as
described under Title II of the Unfunded
Mandates Reform Act (UMRA) (2 U.S.C.
1501 et seq.).
This action does not involve any
technical standards that would require
Agency consideration of voluntary
consensus standards pursuant to section
12(d) of the National Technology
Transfer and Advancement Act
(NTTAA) (15 U.S.C. 272 note).
57149
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2017–0563; FRL–9969–16]
Extension of Tolerances for
Emergency Exemptions (Multiple
Chemicals)
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
This regulation extends timelimited tolerances for the pesticides
listed in this document. These actions
are in response to EPA’s granting of
emergency exemptions under the
Federal Insecticide, Fungicide, and
Rodenticide Act (FIFRA) authorizing
use of these pesticides. In addition, the
Federal Food, Drug, and Cosmetic Act
(FFDCA) requires EPA to establish a
time-limited tolerance or exemption
from the requirement for a tolerance for
pesticide chemical residues in food that
List of Subjects in 40 CFR Part 180
will result from the use of a pesticide
Environmental protection,
under an emergency exemption granted
Administrative practice and procedure,
by EPA.
Agricultural commodities, Pesticides
DATES: This regulation is effective
and pests, Reporting and recordkeeping December 4, 2017. Objections and
requirements.
requests for hearings must be received
Dated: November 15, 2017.
on or before February 2, 2018, and must
be filed in accordance with the
Michael L. Goodis,
instructions provided in 40 CFR part
Director, Registration Division, Office of
Pesticide Programs.
178 (see also Unit I.C. of the
SUPPLEMENTARY INFORMATION).
Therefore, 40 CFR chapter I is
ADDRESSES: The docket for this action,
amended as follows:
identified by docket identification (ID)
PART 180—[AMENDED]
number EPA–HQ–OPP–2017–0563, is
available at https://www.regulations.gov
■ 1. The authority citation for part 180
or at the Office of Pesticide Programs
continues to read as follows:
Regulatory Public Docket (OPP Docket)
Authority: 21 U.S.C. 321(q), 346a and 371.
in the Environmental Protection Agency
Docket Center (EPA/DC), West William
■ 2. In § 180.463, add alphabetically the
commodities ‘‘Asparagus’’; ‘‘Bushberry, Jefferson Clinton Bldg., Rm. 3334, 1301
Constitution Ave. NW., Washington, DC
subgroup 13–07B’’; and ‘‘Caneberry
20460–0001. The Public Reading Room
subgroup 13–07A’’ to the table in
is open from 8:30 a.m. to 4:30 p.m.,
paragraph (a)(1) to read as follows:
Monday through Friday, excluding legal
§ 180.463 Quinclorac; tolerances for
holidays. The telephone number for the
residues.
Public Reading Room is (202) 566–1744,
(a)(1) * * *
and the telephone number for the OPP
Docket is (703) 305–5805. Please review
Parts per
the visitor instructions and additional
Commodity
million
information about the docket available
Asparagus ...................................
0.08 at https://www.epa.gov/dockets.
FOR FURTHER INFORMATION CONTACT:
*
*
*
*
*
Michael L. Goodis, Registration Division
Bushberry, subgroup 13–07B .....
0.08 (7505P), Office of Pesticide Programs,
Caneberry subgroup 13–07A .....
0.08
Environmental Protection Agency, 1200
Pennsylvania Ave. NW., Washington,
*
*
*
*
*
DC 20460–0001; main telephone
number: (703) 305–7090; email address:
*
*
*
*
*
RDFRNotices@epa.gov.
[FR Doc. 2017–26078 Filed 12–1–17; 8:45 am]
BILLING CODE 6560–50–P
SUPPLEMENTARY INFORMATION:
SUMMARY:
VII. Congressional Review Act
Pursuant to the Congressional Review
Act (5 U.S.C. 801 et seq.), EPA will
submit a report containing this rule and
other required information to the U.S.
Senate, the U.S. House of
Representatives, and the Comptroller
General of the United States prior to
publication of the rule in the Federal
Register. This action is not a ‘‘major
rule’’ as defined by 5 U.S.C. 804(2).
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Agencies
[Federal Register Volume 82, Number 231 (Monday, December 4, 2017)]
[Rules and Regulations]
[Pages 57144-57149]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-26078]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2016-0384; FRL-9970-05]
Quinclorac; Pesticide Tolerances
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes tolerances for residues of
quinclorac in or on the bushberry subgroup 13-07B, the caneberry
subgroup 13-07A, and asparagus. Interregional Research Project Number 4
(IR-4) requested these tolerances under the Federal Food, Drug, and
Cosmetic Act (FFDCA).
DATES: This regulation is effective December 4, 2017. Objections and
requests for hearings must be received on or before February 2, 2018,
and must be filed in accordance with the instructions provided in 40
CFR part 178 (see also Unit I.C. of the SUPPLEMENTARY INFORMATION).
ADDRESSES: The docket for this action, identified by docket
identification (ID) number EPA-HQ-OPP-2016-0384, is available at https://www.regulations.gov or at the Office of Pesticide Programs Regulatory
Public Docket (OPP Docket) in the Environmental Protection Agency
Docket Center (EPA/DC), West William
[[Page 57145]]
Jefferson Clinton Bldg., Rm. 3334, 1301 Constitution Ave. NW.,
Washington, DC 20460-0001. The Public Reading Room is open from 8:30
a.m. to 4:30 p.m., Monday through Friday, excluding legal holidays. The
telephone number for the Public Reading Room is (202) 566-1744, and the
telephone number for the OPP Docket is (703) 305-5805. Please review
the visitor instructions and additional information about the docket
available at https://www.epa.gov/dockets.
FOR FURTHER INFORMATION CONTACT: Michael Goodis, Registration Division
(7505P), Office of Pesticide Programs, Environmental Protection Agency,
1200 Pennsylvania Ave. NW., Washington, DC 20460-0001; main telephone
number: (703) 305-7090; email address: RDFRNotices@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
A. Does this action apply to me?
You may be potentially affected by this action if you are an
agricultural producer, food manufacturer, or pesticide manufacturer.
The following list of North American Industrial Classification System
(NAICS) codes is not intended to be exhaustive, but rather provides a
guide to help readers determine whether this document applies to them.
Potentially affected entities may include:
Crop production (NAICS code 111).
Animal production (NAICS code 112).
Food manufacturing (NAICS code 311).
Pesticide manufacturing (NAICS code 32532).
B. How can I get electronic access to other related information?
You may access a frequently updated electronic version of EPA's
tolerance regulations at 40 CFR part 180 through the Government
Printing Office's e-CFR site at https://www.ecfr.gov/cgi-bin/text-idx?&c=ecfr&tpl=/ecfrbrowse/Title40/40tab_02.tpl.
C. How can I file an objection or hearing request?
Under FFDCA section 408(g), 21 U.S.C. 346a, any person may file an
objection to any aspect of this regulation and may also request a
hearing on those objections. You must file your objection or request a
hearing on this regulation in accordance with the instructions provided
in 40 CFR part 178. To ensure proper receipt by EPA, you must identify
docket ID number EPA-HQ-OPP-2016-0384 in the subject line on the first
page of your submission. All objections and requests for a hearing must
be in writing, and must be received by the Hearing Clerk on or before
February 2, 2018. Addresses for mail and hand delivery of objections
and hearing requests are provided in 40 CFR 178.25(b).
In addition to filing an objection or hearing request with the
Hearing Clerk as described in 40 CFR part 178, please submit a copy of
the filing (excluding any Confidential Business Information (CBI)) for
inclusion in the public docket. Information not marked confidential
pursuant to 40 CFR part 2 may be disclosed publicly by EPA without
prior notice. Submit the non-CBI copy of your objection or hearing
request, identified by docket ID number EPA-HQ-OPP-2016-0384, by one of
the following methods:
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the online instructions for submitting comments. Do not submit
electronically any information you consider to be CBI or other
information whose disclosure is restricted by statute.
Mail: OPP Docket, Environmental Protection Agency Docket
Center (EPA/DC), (28221T), 1200 Pennsylvania Ave. NW., Washington, DC
20460-0001.
Hand Delivery: To make special arrangements for hand
delivery or delivery of boxed information, please follow the
instructions at https://www.epa.gov/dockets/contacts.html.
Additional instructions on commenting or visiting the docket, along
with more information about dockets generally, is available at https://www.epa.gov/dockets.
II. Summary of Petitioned-For Tolerance
In the Federal Register of November 30, 2016 (81 FR 86312) (FRL-
9954-06), EPA issued a document pursuant to FFDCA section 408(d)(3), 21
U.S.C. 346a(d)(3), announcing the filing of a pesticide petition (PP
6E8488) by IR-4 Project Headquarters, Rutgers, The State University of
NJ, 500 College Road East, Suite 201 W, Princeton, NJ 08540. The
petition requested that 40 CFR part 180 be amended by establishing
tolerances for residues of the herbicide quinclorac, 3,7-dichloro-8-
quinolinecarboxylic acid in or on asparagus at 0.06 parts per million
(ppm); the bushberry subgroup 13-07B, except lowbush blueberry at 0.6
ppm; and the caneberry subgroup 13-07A at 0.06 ppm. That document
referenced a summary of the petition prepared by Albaugh, the
registrant, which is available in the docket, https://www.regulations.gov. There were no comments received in response to the
notice of filing.
Based upon review of the data supporting the petition, EPA has
modified the levels at which the tolerances are being established. The
reason for these changes is explained in Unit IV.C.
III. Aggregate Risk Assessment and Determination of Safety
Section 408(b)(2)(A)(i) of FFDCA allows EPA to establish a
tolerance (the legal limit for a pesticide chemical residue in or on a
food) only if EPA determines that the tolerance is ``safe.'' Section
408(b)(2)(A)(ii) of FFDCA defines ``safe'' to mean that ``there is a
reasonable certainty that no harm will result from aggregate exposure
to the pesticide chemical residue, including all anticipated dietary
exposures and all other exposures for which there is reliable
information.'' This includes exposure through drinking water and in
residential settings, but does not include occupational exposure.
Section 408(b)(2)(C) of FFDCA requires EPA to give special
consideration to exposure of infants and children to the pesticide
chemical residue in establishing a tolerance and to ``ensure that there
is a reasonable certainty that no harm will result to infants and
children from aggregate exposure to the pesticide chemical residue. . .
.''
Consistent with FFDCA section 408(b)(2)(D), and the factors
specified in FFDCA section 408(b)(2)(D), EPA has reviewed the available
scientific data and other relevant information in support of this
action. EPA has sufficient data to assess the hazards of and to make a
determination on aggregate exposure for quinclorac including exposure
resulting from the tolerances established by this action. EPA's
assessment of exposures and risks associated with quinclorac follows.
A. Toxicological Profile
EPA has evaluated the available toxicity data and considered its
validity, completeness, and reliability as well as the relationship of
the results of the studies to human risk. EPA has also considered
available information concerning the variability of the sensitivities
of major identifiable subgroups of consumers, including infants and
children.
Subchronic toxicity of quinclorac includes decreased body weight
gains, increased water intake, increased liver enzymes (SGOT, SGPT) and
focal chronic interstitial nephritis (rats). Chronic toxic effects of
quinclorac include body weight decrement, increase in kidney and liver
weights, and hydropic degeneration of the kidneys (dogs). At high
doses, chronic
[[Page 57146]]
toxicity also includes increased incidences of pancreatic acinar cell
hyperplasia and adenomas (rats). Neurotoxic effects were not observed
in any of the acute, subchronic, and chronic studies with quinclorac.
There was no increased qualitative or quantitative fetal or
offspring susceptibility in the prenatal developmental or postnatal
reproduction studies. Developmental toxicity in the rabbit consisted of
increased resorptions, post-implantation loss, decreased number of live
fetuses, and reduced fetal body weight. These effects occurred at much
higher doses than the maternal effects of decreased food consumption
and increased water consumption and decreased body weight gain. In the
rat, no developmental toxicity was observed at the highest dose tested
(438 mg/kg/day). In the 2-generation reproduction study, parental
toxicity and offspring toxicity occurred at the same dose. Parental
toxicity consisted of reduced body weight in both sexes during
premating and lactation periods. Offspring toxicity consisted of
decreased pup weight, developmental delays and possible marginal effect
on pup viability. No reproductive toxicity occurred at the highest dose
tested (480 mg/kg/day).
There are no mutagenicity concerns. Quinclorac is not mutagenic in
bacterial assays and does not cause unscheduled DNA damage in primary
rat hepatocytes. There is also no evidence of a genotoxic response in
whole animal test systems (in vivo mouse bone marrow micronucleus
assay). Quinclorac was negative in a mammalian cell in vitro
cytogenetic chromosomal aberration assay in Chinese hamster ovary cells
(CHO). Quinclorac was classified by the Agency as a group D
carcinogen--not classifiable as to human carcinogenicity.
Quantification of cancer risk is not required because the chronic RfD
will adequately account for all chronic effects, including
carcinogenicity, that may result from exposure to quinclorac.
Specific information on the studies received and the nature of the
adverse effects caused by quinclorac as well as the no-observed-
adverse-effect-level (NOAEL) and the lowest-observed-adverse-effect-
level (LOAEL) from the toxicity studies can be found at https://www.regulations.gov in the document titled ``Quinclorac: Human Health
Risk Assessment for New Proposed Use on Bushberry Subgroup 13-07B,
Caneberry Subgroup 13-07A, and Asparagus'' on pages 41-46 in docket ID
number EPA-HQ-OPP-2016-0384.
B. Toxicological Points of Departure/Levels of Concern
Once a pesticide's toxicological profile is determined, EPA
identifies toxicological points of departure (POD) and levels of
concern to use in evaluating the risk posed by human exposure to the
pesticide. For hazards that have a threshold below which there is no
appreciable risk, the toxicological POD is used as the basis for
derivation of reference values for risk assessment. PODs are developed
based on a careful analysis of the doses in each toxicological study to
determine the dose at which no adverse effects are observed (the NOAEL)
and the lowest dose at which adverse effects of concern are identified
(the LOAEL). Uncertainty/safety factors are used in conjunction with
the POD to calculate a safe exposure level--generally referred to as a
population-adjusted dose (PAD) or a reference dose (RfD)--and a safe
margin of exposure (MOE). For non-threshold risks, the Agency assumes
that any amount of exposure will lead to some degree of risk. Thus, the
Agency estimates risk in terms of the probability of an occurrence of
the adverse effect expected in a lifetime. For more information on the
general principles EPA uses in risk characterization and a complete
description of the risk assessment process, see https://www2.epa.gov/pesticide-science-and-assessing-pesticide-risks/assessing-human-health-risk-pesticides.
A summary of the toxicological endpoints for quinclorac used for
human risk assessment is discussed in Unit III.B. of the final rule
published in the Federal Register of November 29, 2013 (78 FR 71523)
(FRL-9902-15).
C. Exposure Assessment
1. Dietary exposure from food and feed uses. In evaluating dietary
exposure to quinclorac, EPA considered exposure under the petitioned-
for tolerances as well as all existing quinclorac tolerances in 40 CFR
180.463. EPA assessed dietary exposures from quinclorac in food as
follows:
i. Acute exposure. Quantitative acute dietary exposure and risk
assessments are performed for a food-use pesticide, if a toxicological
study has indicated the possibility of an effect of concern occurring
as a result of a 1-day or single exposure.
For the general population including infants and children, no such
effects were identified in the toxicological studies for quinclorac;
therefore, a quantitative acute dietary exposure assessment for these
population groups is unnecessary.
However, for females 13 to 49 years of age, such effects were
identified for quinclorac. In estimating acute dietary exposure, EPA
used food consumption information from the 2003-2008 United States
Department of Agriculture's (USDA) National Health and Nutrition
Examination Survey, What We Eat in America, (NHANES/WWEIA). As to
residue levels in food, EPA assumed tolerance-level residues and 100
percent crop treated (PCT).
ii. Chronic exposure. In conducting the chronic dietary exposure
assessment EPA used the food consumption data from the 2003-2008 USDA's
NHANES/WWEIA. As to residue levels in food, EPA assumed tolerance-level
residues and 100 PCT.
iii. Cancer. Based on the current cancer classification of
quinclorac, quantification of cancer risk is not required and the
chronic RfD will adequately account for all chronic effects, including
carcinogenicity, that may result from exposure to quinclorac.
iv. Anticipated residue and PCT information. EPA did not use
anticipated residue or PCT information in the dietary assessment for
quinclorac. Tolerance level residues and 100 PCT were assumed for all
food commodities.
2. Dietary exposure from drinking water. The Agency used screening
level water exposure models in the dietary exposure analysis and risk
assessment for quinclorac in drinking water. These simulation models
take into account data on the physical, chemical, and fate/transport
characteristics of quinclorac. Further information regarding EPA
drinking water models used in pesticide exposure assessment can be
found at https://www2.epa.gov/pesticide-science-and-assessing-pesticide-risks/about-water-exposure-models-used-pesticide.
Based on the Tier 1 Rice Model and the Pesticide Water Calculator-
Ground Water exposure model, the estimated drinking water
concentrations (EDWCs) of quinclorac for acute exposures are estimated
to be 511 parts per billion (ppb) for surface water and 817 ppb for
ground water and for chronic exposures are estimated to be 481 ppb for
surface water and 543 ppb for ground water.
Modeled estimates of drinking water concentrations were directly
entered into the dietary exposure model. For the acute dietary risk
assessment, the water concentration value of 817 ppb was used to assess
the contribution to drinking water. For the chronic dietary risk
assessment, the water concentration of value 543 ppb was used to assess
the contribution to drinking water.
[[Page 57147]]
3. From non-dietary exposure. The term ``residential exposure'' is
used in this document to refer to non-occupational, non-dietary
exposure (e.g., for lawn and garden pest control, indoor pest control,
termiticides, and flea and tick control on pets).
Quinclorac is currently registered for the following uses that
could result in residential exposures: Turf grass and ornamentals. EPA
assessed residential exposure using the following assumptions: Short-
term residential handler inhalation exposure is expected from the
existing uses. The quantitative exposure/risk assessment developed for
residential handlers is based on the following scenarios: Loading/
applying granules for belly grinder; loading/applying granules for push
type rotary spreader; loading/applying granules for a spoon; loading/
applying granules for a cup and shaker can; applying granules by hand;
mixing/loading/applying liquid and dry flowable formulations via
manually-pressurized handwand, a hose-end sprayer, a backpack, and a
sprinkler can; and mixing/loading/applying ready-to-use formulation via
a trigger sprayer, and a hose-end sprayer.
Post-application short-term dermal and incidental oral exposure is
expected from quinclorac treated turf in residential settings (i.e.,
lawns). Dermal exposures were not quantified due to a lack of a dermal
toxicological endpoint. Incidental oral exposure risk estimates were
calculated for hand-to-mouth, object-to-mouth, and soil ingestion
exposures for 1 to <2-year old children playing in the treated turf.
Even though there is a granular product, an assessment for episodic
granular ingestion was not done since there is no applicable endpoint
(i.e., no acute dietary point of departure for children).
The worst-case residential exposure scenario used in the adult
aggregate assessment reflects inhalation exposure from residential
handlers mixing/loading/applying water-dispersible granule/dry flowable
formulations with a manually-pressurized handwand and/or backpack
equipment.
The worst-case residential exposure scenario used in the children
1<2 years old aggregate assessment reflects hand-to-mouth exposures
from post-application exposure to treated turf.
Further information regarding EPA standard assumptions and generic
inputs for residential exposures may be found at https://www2.epa.gov/pesticide-science-and-assessing-pesticide-risks/standard-operating-procedures-residential-pesticide.
4. Cumulative effects from substances with a common mechanism of
toxicity. Section 408(b)(2)(D)(v) of FFDCA requires that, when
considering whether to establish, modify, or revoke a tolerance, the
Agency consider ``available information'' concerning the cumulative
effects of a particular pesticide's residues and ``other substances
that have a common mechanism of toxicity.''
EPA has not found quinclorac to share a common mechanism of
toxicity with any other substances, and quinclorac does not appear to
produce a toxic metabolite produced by other substances. For the
purposes of this tolerance action, therefore, EPA has assumed that
quinclorac does not have a common mechanism of toxicity with other
substances. For information regarding EPA's efforts to determine which
chemicals have a common mechanism of toxicity and to evaluate the
cumulative effects of such chemicals, see EPA's Web site at https://www2.epa.gov/pesticide-science-and-assessing-pesticide-risks/cumulative-assessment-risk-pesticides.
D. Safety Factor for Infants and Children
1. In general. Section 408(b)(2)(C) of FFDCA provides that EPA
shall apply an additional tenfold (10X) margin of safety for infants
and children in the case of threshold effects to account for prenatal
and postnatal toxicity and the completeness of the database on toxicity
and exposure unless EPA determines based on reliable data that a
different margin of safety will be safe for infants and children. This
additional margin of safety is commonly referred to as the FQPA Safety
Factor (SF). In applying this provision, EPA either retains the default
value of 10X, or uses a different additional safety factor when
reliable data available to EPA support the choice of a different
factor.
2. Prenatal and postnatal sensitivity. The toxicology database for
quinclorac consists of developmental toxicity studies in rats and
rabbits and a 2-generation reproduction study in rats. There is no
indication of increased qualitative or quantitative susceptibility of
rats or rabbit fetuses to in utero and/or postnatal exposure in the
developmental and reproductive toxicity data.
3. Conclusion. EPA has determined that reliable data show the
safety of infants and children would be adequately protected if the
FQPA SF were reduced to 1x. That decision is based on the following
findings:
i. The toxicity database for quinclorac is complete.
ii. There is no indication that quinclorac is a neurotoxic chemical
and there is no need for a developmental neurotoxicity study or
additional UFs to account for neurotoxicity.
iii. There is no evidence that quinclorac results in increased
susceptibility in in utero rats or rabbits in the prenatal
developmental studies or in young rats in the 2-generation reproduction
study.
iv. There are no residual uncertainties identified in the exposure
databases. The dietary food exposure assessments were performed based
on 100 PCT and tolerance-level residues. EPA made conservative
(protective) assumptions in the ground and surface water modeling used
to assess exposure to quinclorac in drinking water. EPA used similarly
conservative assumptions to assess post-application exposure of
children as well as incidental oral exposure of toddlers. These
assessments will not underestimate the exposure and risks posed by
quinclorac.
E. Aggregate Risks and Determination of Safety
EPA determines whether acute and chronic dietary pesticide
exposures are safe by comparing aggregate exposure estimates to the
acute PAD (aPAD) and chronic PAD (cPAD). For linear cancer risks, EPA
calculates the lifetime probability of acquiring cancer given the
estimated aggregate exposure. Short-, intermediate-, and chronic-term
risks are evaluated by comparing the estimated aggregate food, water,
and residential exposure to the appropriate PODs to ensure that an
adequate MOE exists.
1. Acute risk. An acute aggregate risk assessment takes into
account acute exposure estimates from dietary consumption of food and
drinking water. For the general population including infants and
children, no adverse effect resulting from a single oral exposure was
identified and no acute dietary endpoint was selected. Therefore,
quinclorac is not expected to pose an acute risk to these population
groups. However, an adverse effect was identified for females 13 to 49
years of age, and therefore an acute aggregate risk assessment was
performed for this population group.
Using the exposure assumptions discussed in this unit for acute
exposure, the acute dietary exposure from food and water to quinclorac
will occupy 2.4% of the aPAD for females 13 to 49 years old, the only
population group of concern.
2. Chronic risk. Using the exposure assumptions described in this
unit for chronic exposure, EPA has concluded that chronic exposure to
quinclorac from food and water will utilize 9.4% of the cPAD for all
infants <1 year old, the
[[Page 57148]]
population group receiving the greatest exposure. Based on the
explanation in Unit III.C.3., regarding residential use patterns,
chronic residential exposure to residues of quinclorac is not expected.
3. Short-term risk. Short-term aggregate exposure takes into
account short-term residential exposure plus chronic exposure to food
and water (considered to be a background exposure level).
Quinclorac is currently registered for uses that could result in
short-term residential exposure, and the Agency has determined that it
is appropriate to aggregate chronic exposure through food and water
with short-term residential exposures to quinclorac.
Using the exposure assumptions described in this unit for short-
term exposures, EPA has concluded the combined short-term food, water,
and residential exposures result in aggregate MOEs of 2,100 for adults
and 1,500 for children 1<2 years old. Because EPA's level of concern
for quinclorac is a MOE of 100 or below, these MOEs are not of concern.
4. Intermediate-term risk. Intermediate-term aggregate exposure
takes into account intermediate-term residential exposure plus chronic
exposure to food and water (considered to be a background exposure
level).
Intermediate-term aggregate exposure takes into account
intermediate-term residential exposure plus chronic exposure to food
and water (considered to be a background exposure level). An
intermediate-term adverse effect was identified, however, quinclorac is
not registered for any use patterns that would result in intermediate-
term residential exposure; therefore, an intermediate-term aggregate
risk assessment was not performed nor required. In addition, since the
short- and intermediate-term PODs are the same, the estimates for
short-term duration are protective of intermediate-term duration.
5. Aggregate cancer risk for U.S. population. Based on the
discussion in Unit III.A., EPA considers the chronic aggregate risk
assessment to be protective of any aggregate cancer risk. As there is
no chronic risk of concern, EPA does not expect any cancer risk to the
U.S. population from aggregate exposure to quinclorac.
6. Determination of safety. Based on these risk assessments, EPA
concludes that there is a reasonable certainty that no harm will result
to the general population, or to infants and children from aggregate
exposure to quinclorac residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate analytical methods (gas chromatography/electron capture
detector (GC/ECD)) are available for enforcing quinclorac tolerances on
plant and livestock commodities. The methods have undergone successful
agency method validation trials and have been submitted to the Food and
Drug Administration (FDA) for publication in the Pesticide Analytical
Manual (PAM) II as the tolerance enforcement methods. The Limit of
Quantitation (LOQ) of both methods is 0.05 ppm for all matrices.
Other adequate LC/MS/MS based analytical methods, BASF Method
D9708/02 (for quinclorac) and BASF Method D9806/02 (for quinclorac
methyl ester), are available for data collection and tolerance
enforcement of residues of quinclorac and its methyl ester metabolite
in/on plant commodities. The validated LOQ for both methods is 0.05
ppm. Both methods monitor two ion transitions. The Agency concurred
with BASF's proposal to designate BASF Method D9708/02 and BASF Method
D9806/02 as the new tolerance enforcement methods for quinclorac and
quinclorac methy ester, respectively. These LC/MS/MS enforcement
analytical methods without the methylation step are preferable to the
previous GC/ECD method.
The method may be requested from: Chief, Analytical Chemistry
Branch, Environmental Science Center, 701 Mapes Rd., Ft. Meade, MD
20755-5350; telephone number: (410) 305-2905; email address:
residuemethods@epa.gov.
B. International Residue Limits
In making its tolerance decisions, EPA seeks to harmonize U.S.
tolerances with international standards whenever possible, consistent
with U.S. food safety standards and agricultural practices. EPA
considers the international maximum residue limits (MRLs) established
by the Codex Alimentarius Commission (Codex), as required by FFDCA
section 408(b)(4). The Codex Alimentarius is a joint United Nations
Food and Agriculture Organization/World Health Organization food
standards program, and it is recognized as an international food safety
standards-setting organization in trade agreements to which the United
States is a party. EPA may establish a tolerance that is different from
a Codex MRL; however, FFDCA section 408(b)(4) requires that EPA explain
the reasons for departing from the Codex level.
The Codex has not established any MRLs for quinclorac on any of the
crops covered by this document.
C. Revisions to Petitioned-For Tolerances
Using the amended residue data in the Organization for Economic
Cooperation and Development (OECD) tolerance calculation procedures,
the Agency is establishing the tolerance of 0.08 ppm for combined
residues of quinclorac and its methyl ester metabolite, in/on the
bushberry subgroup 13-07B, the caneberry subgroup 13-07A, and
asparagus. The tolerance of 0.08 ppm in/on the caneberry subgroup 13-
07A and asparagus is higher than the petitioned-for tolerance (0.06
ppm) because the quinclorac residue values from the submitted field
trial data did not include the residue values of methyl ester
metabolite. However, the tolerance in/on the bushberry subgroup 13-07B
is much lower than the petitioned-for tolerance (0.6 ppm). In blueberry
trials, the petitioner included the single lowbush blueberry trial
(ME03) in the tolerance calculation for bushberry subgroup 13-07B.
Trial ME03 gives a quinclorac residue value (HAFT: 0.374 ppm) that is
approximately sixteen times greater than the residue value (HAFT: 0.024
ppm) in/on blueberries from the six highbush blueberry trials. The
difference in residue value is largely attributed to application
patterns. The single lowbush blueberry sample (ME03) was subjected to
two applications--one broadcast to the ground, the other broadcast to
the foliage, whereas samples of highbush blueberry (subgroup 13-07B)
were conducted with banded soil application twice. After excluding ME03
the tolerance value of blueberry from the OECD calculator (0.08 ppm) is
significantly lower than the proposed tolerance (0.6 ppm).
Lastly, the Agency is modifying the proposed commodity definition
of ``Bushberry Subgroup 13-07B, except lowbush blueberry'' to
``Bushberry Subgroup 13-07B'' because the lowbush blueberry tolerance
is covered by the established tolerance at 1.5 ppm in/on berry, low
growing, except strawberry, subgroup 13-07H.
V. Conclusion
Therefore, tolerances are established for residues of quinclorac,
3,7-dichloro-8-quinolinecarboxylic acid, in or on asparagus at 0.08
ppm; the bushberry, subgroup 13-07B at 0.08 ppm; and the
[[Page 57149]]
caneberry subgroup 13-07A at 0.08 ppm.
VI. Statutory and Executive Order Reviews
This action establishes tolerances under FFDCA section 408(d) in
response to a petition submitted to the Agency. The Office of
Management and Budget (OMB) has exempted these types of actions from
review under Executive Order 12866, entitled ``Regulatory Planning and
Review'' (58 FR 51735, October 4, 1993). Because this action has been
exempted from review under Executive Order 12866, this action is not
subject to Executive Order 13211, entitled ``Actions Concerning
Regulations That Significantly Affect Energy Supply, Distribution, or
Use'' (66 FR 28355, May 22, 2001); Executive Order 13045, entitled
``Protection of Children from Environmental Health Risks and Safety
Risks'' (62 FR 19885, April 23, 1997); or Executive Order 13771,
entitled ``Reducing Regulations and Controlling Regulatory Costs'' (82
FR 9339, February 3, 2017). This action does not contain any
information collections subject to OMB approval under the Paperwork
Reduction Act (PRA) (44 U.S.C. 3501 et seq.), nor does it require any
special considerations under Executive Order 12898, entitled ``Federal
Actions to Address Environmental Justice in Minority Populations and
Low-Income Populations'' (59 FR 7629, February 16, 1994).
Since tolerances and exemptions that are established on the basis
of a petition under FFDCA section 408(d), such as the tolerance in this
final rule, do not require the issuance of a proposed rule, the
requirements of the Regulatory Flexibility Act (RFA) (5 U.S.C. 601 et
seq.), do not apply.
This action directly regulates growers, food processors, food
handlers, and food retailers, not States or tribes, nor does this
action alter the relationships or distribution of power and
responsibilities established by Congress in the preemption provisions
of FFDCA section 408(n)(4). As such, the Agency has determined that
this action will not have a substantial direct effect on States or
tribal governments, on the relationship between the national government
and the States or tribal governments, or on the distribution of power
and responsibilities among the various levels of government or between
the Federal Government and Indian tribes. Thus, the Agency has
determined that Executive Order 13132, entitled ``Federalism'' (64 FR
43255, August 10, 1999) and Executive Order 13175, entitled
``Consultation and Coordination with Indian Tribal Governments'' (65 FR
67249, November 9, 2000) do not apply to this action. In addition, this
action does not impose any enforceable duty or contain any unfunded
mandate as described under Title II of the Unfunded Mandates Reform Act
(UMRA) (2 U.S.C. 1501 et seq.).
This action does not involve any technical standards that would
require Agency consideration of voluntary consensus standards pursuant
to section 12(d) of the National Technology Transfer and Advancement
Act (NTTAA) (15 U.S.C. 272 note).
VII. Congressional Review Act
Pursuant to the Congressional Review Act (5 U.S.C. 801 et seq.),
EPA will submit a report containing this rule and other required
information to the U.S. Senate, the U.S. House of Representatives, and
the Comptroller General of the United States prior to publication of
the rule in the Federal Register. This action is not a ``major rule''
as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection, Administrative practice and procedure,
Agricultural commodities, Pesticides and pests, Reporting and
recordkeeping requirements.
Dated: November 15, 2017.
Michael L. Goodis,
Director, Registration Division, Office of Pesticide Programs.
Therefore, 40 CFR chapter I is amended as follows:
PART 180--[AMENDED]
0
1. The authority citation for part 180 continues to read as follows:
Authority: 21 U.S.C. 321(q), 346a and 371.
0
2. In Sec. 180.463, add alphabetically the commodities ``Asparagus'';
``Bushberry, subgroup 13-07B''; and ``Caneberry subgroup 13-07A'' to
the table in paragraph (a)(1) to read as follows:
Sec. 180.463 Quinclorac; tolerances for residues.
(a)(1) * * *
------------------------------------------------------------------------
Parts per
Commodity million
------------------------------------------------------------------------
Asparagus................................................... 0.08
* * * * *
Bushberry, subgroup 13-07B.................................. 0.08
Caneberry subgroup 13-07A................................... 0.08
* * * * *
------------------------------------------------------------------------
* * * * *
[FR Doc. 2017-26078 Filed 12-1-17; 8:45 am]
BILLING CODE 6560-50-P