Clethodim; Pesticide Tolerances, 27337-27342 [2016-10738]
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Federal Register / Vol. 81, No. 88 / Friday, May 6, 2016 / Rules and Regulations
(b) Section 18 emergency exemptions.
Time-limited tolerances are established
for residues of the insecticide
methoxyfenozide, including its
metabolites and degradates in or on the
commodities listed in the table below,
resulting from use of the pesticide under
a Section 18 emergency exemption
granted by EPA. Compliance with the
tolerance levels specified in the
following table is to be determined by
measuring only methoxyfenozide (3methoxy-2-methylbenzoic acid 2-(3,5dimethylbenzoyl)-2-(1,1-dimethylethyl)
hydrazide) in or on the commodity.
Commodity
Parts per
million
Rice, bran
4.0
Rice,
grain.
*
*
0.50
*
*
Expiration/
revocation date
I. General Information
December 31,
2019.
December 31,
2019.
*
[FR Doc. 2016–09969 Filed 5–5–16; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2015–0035; FRL–9945–68]
Clethodim; Pesticide Tolerances
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
This regulation establishes
tolerances for residues of clethodim in
or on multiple commodities which are
identified and discussed later in this
document. Interregional Research
Project Number 4 (IR–4) requested these
tolerances under the Federal Food,
Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective May
6, 2016. Objections and requests for
hearings must be received on or before
July 5, 2016, and must be filed in
accordance with the instructions
provided in 40 CFR part 178 (see also
Unit I.C. of the SUPPLEMENTARY
INFORMATION).
SUMMARY:
The docket for this action,
identified by docket identification (ID)
number EPA–HQ–OPP–2015–0035, 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
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.,
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ADDRESSES:
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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:
Susan Lewis, 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:
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.
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–2015–0035 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 July 5, 2016. Addresses for mail
and hand delivery of objections and
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27337
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–
2015–0035, 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 Wednesday,
May 20, 2015 (80 FR 28925) (FRL–9927–
39), 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 4E8334) by
Interregional Research Project Number 4
(IR–4), 500 College Road East, Suite 201
W, Princeton, NJ 08540. The petition
requested that 40 CFR 180.458 be
amended by establishing tolerances for
residues of the herbicide clethodim, 2[(1E)-1-[[[(2E)-3-chloro-2propenyl]oxy]imino]propyl]-5-[2(ethylthio)propyl]-3-hydroxy-2cyclohexen-1-one, and its metabolites
containing the 5-(2ethylthiopropyl)cyclohexene-3-one and
5-(2-ethylthiopropyl)-5hydroxycyclohexene-3-one moieties and
their sulphoxides and sulphones,
calculated as the stoichiometric
equivalent of clethodim, in or on stevia
at 12 parts per million (ppm); pome fruit
group 11–10 at 0.2 ppm; stone fruit
group 12–12 at 0.2 ppm; bulb onion
subgroup 3–07A at 0.2 ppm; low
growing berry subgroup 13–07G, except
cranberry at 3.0 ppm; rapeseed
subgroup 20A, except flax 0.5 ppm;
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sunflower subgroup 20B at 5.0 ppm;
cottonseed subgroup 20C at 1.0 ppm;
and fruiting vegetable group 08–10 at
1.0 ppm. Also, this notice further
requests amending 40 CFR 180.458 by
removing the following commodity
listings: canola seed at 0.5 ppm, cotton,
undelinted seed at 1.0 ppm, peach at 0.2
ppm, onion, bulb at 0.2 ppm, strawberry
at 3.0 ppm, and sunflower, seed at 5.0
ppm, upon establishment of the
aforementioned tolerances. That
document referenced a summary of the
petition prepared by Valent USA
Corporation, 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 made
some modifications to petitioned-for
crop tolerances. The reasons for these
changes are explained in Unit IV.C.
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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
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and to make a determination on
aggregate exposure for clethodim
including exposure resulting from the
tolerances established by this action.
EPA’s assessment of exposures and risks
associated with clethodim follows.
A. Toxicological Profile
EPA has evaluated the available
toxicity data and considered their
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.
The liver is the target organ based on
repeated dosing by either oral or dermal
routes in rats, mice, and dogs. The
observed liver effects are characterized
by increased liver weights, clinical
chemistry changes, and centrilobular
hepatic hypertrophy. Most of the liver
effects that occurred at or below 100
milligrams/kilogram body weight (mg/
kg bw) were considered as adaptive
effects and not adverse. Decreased body
weight was also a common finding
across studies and species. In the 1-year
dog oral toxicity study, hematological
changes such as increased platelet and
leukocyte counts were also noted.
Developmental effects were not
present in rabbits; the rat developmental
toxicity study showed reduced fetal
body weights and an increase in the
incidence of delayed ossification of the
lower vertebrae at the same dose where
maternal toxicity was found. Neither
reproductive nor offspring effects were
seen in the 2-generation rat
reproduction study. Therefore, the data
did not show an increased susceptibility
in the young. The clethodim database
also showed no potential for
neurotoxicity or immunotoxicity.
The rat and mouse carcinogenicity
studies did not show treatment-related
increases in tumor incidence. Clethodim
is not genotoxic and is classified as ‘‘not
likely to be carcinogenic to humans.’’
Specific information on the studies
received and the nature of the adverse
effects caused by Clethodim as well as
the no-observed-adverse-effect-level
(NOAEL) and the lowest-observedadverse-effect-level (LOAEL) from the
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toxicity studies can be found at https://
www.regulations.gov in document’’,
Clethodim. Human Health Aggregate
Risk Assessment for the Proposed New
Uses on Stevia, Pome Fruit Group 11–
10, Stone Fruit Group 12–12, Bulb
Onion Subgroup 3–07A, Low Growing
Berry Subgroup 13–07G, (except
Cranberry); Rapeseed Subgroup 20A
(except Flax Seed), Sunflower Subgroup
20B, Cottonseed Subgroup 20C, and
Fruiting Vegetable Group 8–10, pages
number 29 through 34 in docket ID
number EPA–HQ–OPP–2015–0035.
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 clethodim used for human
risk assessment is shown in Table 1 of
this unit.
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27339
TABLE 1—SUMMARY OF TOXICOLOGICAL DOSES AND ENDPOINTS FOR CLETHODIM FOR USE IN HUMAN HEALTH RISK
ASSESSMENT
Exposure/scenario
Point of departure
and uncertainty/
safety factors
RfD, PAD, LOC for
risk assessment
Study and toxicological effects
Acute neurotoxicity studies—rats.
LOAEL = 1,000 mg/kg based on clinical observation from two
acute neurotoxicity studies (one study was conducted in
2006 and another was completed in 2012). The clinical observation included decreased spontaneous activity, ruffled
fur, head tilt, and hunched posture.
Carcinogenicity study—mice.
LOAEL = 150 mg/kg/day based on reduced survival; decreased
red cell mass; and increased incidences of bile duct
hyperplasia, of pigmentation of the liver, and of foci of
amphophilic macrophages in the lung.
90-day oral toxicity—dogs.
LOAEL = 125 mg/kg/day based on increased absolute and relative liver weights, and histological changes characterized by
cytoplasmic vesiculation and vacuolation of the central lobular hepatocytes in both sexes.
90-day oral toxicity—dogs
LOAEL = 125 mg/kg/day based on increased absolute and relative liver weights, and histological changes characterized by
cytoplasmic vesiculation and vacuolation of the central lobular hepatocytes in both sexes.
Acute dietary (All populations) ..
NOAEL = 100 mg/
kg/day.
UFA = 10x
UFH = 10x
FQPA SF = 1x
Acute RfD = 1 mg/
kg/day.
aPAD = 1 mg/kg/day
Chronic dietary (All populations)
NOAEL = 30 mg/kg/
day.
UFA = 10x
UFH = 10x
FQPA SF = 1x
NOAEL = 75 mg/kg/
day.
UFA = 10X
UFH = 10X
FQPA SF = 1X
NOAEL = 75 mg/kg/
day.
UFA = 10X
UFH = 10X
FQPA SF = 1X
Chronic RfD = 0.3
mg/kg/day.
cPAD = 0.3 mg/kg/
day
Incidental Oral Short-Term (1–
30 days).
Inhalation Short-Term (1 to 30
days).
Cancer (Oral, dermal, inhalation).
LOC for MOE = 100
LOC for MOE = 100
Clethodim is classified as ‘‘Not Likely’’ to be carcinogenic based no treatment-related increase in tumor incidence in rat and mouse carcinogenicity studies.
FQPA SF = Food Quality Protection Act Safety Factor. LOAEL = lowest-observed-adverse-effect-level. LOC = level of concern. mg/kg/day =
milligram/kilogram/day. NOAEL = no-observed-adverse-effect-level. PAD = population adjusted dose (a = acute, c = chronic). RfD = reference
dose. UF = uncertainty factor. UFA = extrapolation from animal to human (interspecies). UFH = potential variation in sensitivity among members
of the human population (intraspecies).
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C. Exposure Assessment
1. Dietary exposure from food and
feed uses. In evaluating dietary
exposure to clethodim, EPA considered
exposure under the petitioned-for
tolerances as well as all existing
clethodim tolerances in 40 CFR 180.458.
EPA assessed dietary exposures from
clethodim 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.
Such effects were identified for
clethodim. In estimating acute dietary
exposure, EPA used the Dietary
Exposure Evaluation Model software
with the Food Commodity Intake
Database (DEEM–FCID), Version 3.16,
which incorporates 2003–2008 food
consumption data from the U.S.
Department of Agriculture’s (USDA’s)
National Health and Nutrition
Examination Survey, What We Eat in
America, (NHANES/WWEIA). As to
residue levels in food, EPA conducted
unrefined acute dietary analyses
assuming tolerance-level residues for all
commodities and 100 percent crop
treated (PCT). Unless tolerances were
established for processed commodities,
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DEEM version 7.81 default processing
factors were assumed.
ii. Chronic exposure. In conducting
the chronic dietary exposure assessment
EPA used the DEEM–FCID, Version
3.16, which incorporates 2003–2008
food consumption data from the USDA’s
NHANES/WWEIA. As to residue levels
in food, EPA conducted unrefined
chronic dietary analyses assuming
tolerance-level residues for all
commodities and 100 PCT. Unless
tolerances were established for
processed commodities, DEEM version
7.81 default processing factors were
assumed.
iii. Cancer. Based on the data
summarized in Unit III.A., EPA has
concluded that clethodim does not pose
a cancer risk to humans. Therefore, a
dietary exposure assessment for the
purpose of assessing cancer risk was not
conducted.
iv. Anticipated residue and percent
crop treated (PCT) information. EPA did
not use anticipated residue and/or PCT
information in the dietary assessment
for clethodim. 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 clethodim in drinking water. These
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simulation models take into account
data on the physical, chemical, and fate/
transport characteristics of clethodim.
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 First Index Reservoir
Screening Tool (FIRST) and Pesticide
Root Zone Model Ground Water (PRZM
GW) models, the estimated drinking
water concentrations (EDWCs) of
clethodim for acute exposures are 330
parts per billion (ppb) for surface water
and 1,430 ppb for ground water.
For chronic exposures for non-cancer
assessments are estimated to be 137 ppb
for surface water and 1,150 ppb for
ground water.
Modeled estimates of drinking water
concentrations were directly entered
into the dietary exposure model.
For acute dietary risk assessment, the
water concentration value of 1,430 ppb
was used to assess the contribution to
drinking water.
For chronic dietary risk assessment,
the water concentration of value 1,150
ppb was used to assess the contribution
to drinking water.
3. From non-dietary exposure. The
term ‘‘residential exposure’’ is used in
this document to refer to non-
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occupational, non-dietary exposure
(e.g., for lawn and garden pest control,
indoor pest control, termiticides, and
flea and tick control on pets).
Clethodim is currently registered for
the following uses that could result in
residential exposures: In and around
ornamental plant beds, landscaped area,
trees, and ground covers (mulch). There
are no residential uses associated with
proposed new uses. EPA has previously
assessed clethodim residential exposure
using the following assumptions: Shortterm residential handler inhalation
exposures represent the ‘‘worst case’’
high-end exposure. Because a dermal
hazard was not identified, residential
handler and post-application dermal
risk assessments were not conducted.
No other post-application exposures
were assessed either because the
potential for exposure via non-dietary
ingestion for young children is unlikely
due to the limited residential uses for
clethodim products. The extent to
which young children engage in the
types of activities associated with these
areas (i.e., ornamental landscapes) or
utilize these areas for prolonged periods
of play is low. No intermediate-term or
chronic exposures are expected from the
currently registered residential uses.
Further information regarding EPA
standard assumptions and generic
inputs for residential exposures may be
found at: https://www2.epa.gov/
pesticide-science-and-assessingpesticide-risks/standard-operatingprocedures-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 clethodim to share
a common mechanism of toxicity with
any other substances, and clethodim
does not appear to produce a toxic
metabolite produced by other
substances. For the purposes of this
tolerance action, therefore, EPA has
assumed that clethodim 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.
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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.
There is no evidence of increased
susceptibility of fetuses as compared to
maternal animals following in utero
and/or postnatal exposure to clethodim
in the developmental toxicity studies in
rats or rabbits, and no increased
sensitivity in pups as compared to
adults in the 2-generation rat
reproduction toxicity study. There are
no residual uncertainties concerning
prenatal and postnatal toxicity and no
neurotoxicity concerns.
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 clethodim
is complete.
ii. There is no indication that
clethodim 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 of increased
susceptibility of fetuses as compared to
maternal animals following in utero
and/or postnatal exposure to clethodim
in the developmental toxicity studies in
rats or rabbits, and no increased
sensitivity in pups as compared to
adults in the 2-generation rat
reproduction toxicity study. In the rat
developmental study, reduced
ossification seen at the same dose that
resulted in maternal toxicity is
considered secondary to reduced
maternal body weight, and is not
considered qualitative susceptibility.
There are no residual uncertainties
concerning prenatal and postnatal
toxicity and no neurotoxicity concerns.
iv. There are no residual uncertainties
identified in the exposure databases.
The dietary food exposure assessments
were performed based on 100 PCT and
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tolerance-level residues. EPA made
conservative (protective) assumptions in
the ground and surface water modeling
used to assess exposure to clethodim in
drinking water. Post application
exposure of children and incidental oral
exposures to toddlers are expected to be
negligible. All exposure estimates are
based on conservative assumptions that
will not underestimate the exposure and
risks posed by clethodim.
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. Acute exposure is not expected
for the residential exposure pathway.
Therefore, the acute aggregate risk
would be equivalent to the acute dietary
exposure estimates.
Using the exposure assumptions
discussed in this unit for acute
exposure, the acute dietary exposure
from food and water to clethodim will
occupy 29% of the aPAD for all infants
<1 year old, the population group
receiving the greatest exposure.
2. Chronic risk. There are no chronic
residential exposure scenarios.
Therefore, the chronic aggregate risk
would be equivalent to the chronic
dietary exposure (food and drinking
water) estimate. Using the exposure
assumptions described in this unit for
chronic exposure, EPA has concluded
that chronic exposure to clethodim from
food and water will utilize 30% of the
cPAD for all infants <1 year old, the
population group receiving the greatest
exposure.
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). Clethodim 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
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clethodim. 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 the short-term aggregate risk
estimate for adults ages 20–49 is a MOE
of 2,200. Because EPA’s level of concern
for clethodim is a MOE of 100 or below,
this MOE is not of concern.
4. Intermediate-term risk. An
intermediate-term adverse effect was
identified; however, clethodim is not
registered for any use patterns that
would result in intermediate-term
residential exposure. Intermediate-term
risk is assessed based on intermediateterm residential exposure plus chronic
dietary exposure. Because there is no
intermediate-term residential exposure
and chronic dietary exposure has
already been assessed under the
appropriately protective cPAD (which is
at least as protective as the POD used to
assess intermediate-term risk), no
further assessment of intermediate-term
risk is necessary, and EPA relies on the
chronic dietary risk assessment for
evaluating intermediate-term risk for
clethodim.
5. Aggregate cancer risk for U.S.
population. Based on the lack of
evidence of carcinogenicity in two
adequate rodent carcinogenicity studies,
clethodim is not expected to pose a
cancer risk to humans.
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 clethodim
residues.
IV. Other Considerations
Lhorne on DSK30JT082PROD with RULES
A. Analytical Enforcement Methodology
Adequate enforcement methodologies
are available: FDA Multiresidue
Methods, gas chromatography/flame
photometric detection in the sulfur
mode (GC/FPD–S) and gas
chromatography method with mass
selective detection (GC/MSD).
These methods have been adequately
validated for the analyses of residues of
clethodim in/on crop matrices.
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
VerDate Sep<11>2014
13:56 May 05, 2016
Jkt 238001
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 established MRLs for
clethodim in or on onion bulb and garlic
at 0.5 ppm, tomato at 1 ppm, rapeseed
at 0.5 ppm, sunflower seed at 0.5 ppm,
and cotton seed at 0.5 ppm. The U.S.
tolerances for rapeseed subgroup 20A,
fruiting vegetables crop group 8–10, and
onion, bulb, subgroup 3–07A are
harmonized with the Codex MRLs for
rapeseed, tomato, and bulb onion and
garlic, respectively.
However, the U.S. tolerances for
sunflower subgroup 20B and cottonseed
subgroup 20C are not harmonized with
the corresponding Codex MRLs for
sunflower seed and cotton seed since
the MRL values are lower than the U.S
tolerances. The U.S. tolerances cannot
be lowered to harmonize because doing
so could result in residues above the
tolerances when following the U.S.
approved label directions.
C. Revisions to Petitioned-for Tolerances
The Agency made changes to the
naming of certain petitioned-for
commodities to reflect the current
commodity definitions and significant
figures used by the Agency. Although
the petitioner requested a tolerance on
stevia only, EPA established a tolerance
on stevia, dried leaves because the dried
commodity represents stevia that will be
found in the U.S. trade market.
Moreover, the Agency is removing
certain commodities from the table at
§ 180.458(a) in order to eliminate
redundancies upon the establishment of
new crop group tolerances that were not
identified in the petition: mustard, seed
at 0.5 ppm, safflower, seed at 5.0 ppm,
sesame, seed at 0.35 ppm, vegetable,
fruiting group 8 at 1.0 ppm.
V. Conclusion
Therefore, tolerances are established
for residues of clethodim, 2-[(1E)-1[[[(2E)-3-chloro-2propenyl]oxy]imino]propyl]-5-[2-
PO 00000
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Fmt 4700
Sfmt 4700
27341
(ethylthio)propyl]-3-hydroxy-2cyclohexen-1-one, and its metabolites
containing the 5-(2ethylthiopropyl)cyclohexene-3-one and
5-(2-ethylthiopropyl)-5hydroxycyclohexene-3-one moieties and
their sulphoxides and sulphones,
calculated as the stoichiometric
equivalent of clethodim, in or on berry,
low growing, subgroup 13–07G, except
cranberry at 3.0 ppm; cottonseed
subgroup 20C at 1.0 ppm; fruit, pome,
group 11–10 at 0.20 ppm; fruit, stone,
group 12–12 at 0.20 ppm; onion, bulb,
subgroup 3–07A at 0.50 ppm; rapeseed
subgroup 20A, except flax seed at 0.50
ppm; stevia, dried leaves at 12 ppm;
sunflower subgroup 20B at 5.0 ppm; and
vegetable, fruiting, group 8–10 at 1.0
ppm. EPA is also removing the
following established tolerances that are
superseded by this action: Canola seed,
at 0.50 ppm; cotton, undelinted seed at
1.0 ppm; mustard, seed at 0.50 ppm;
peach at 0.20 ppm; onion, bulb at 0.20
ppm; strawberry at 3.0 ppm; safflower,
seed at 5.0 ppm; sesame, seed at 0.35
ppm; sunflower, seed at 5.0 ppm;
vegetable, fruiting group 8 at 1.0 ppm.
Finally, as a housekeeping measure, the
Agency is removing two individual
tolerances that are subsumed within
other crop group tolerances contained in
§ 180.458: Bean, dry, seed at 2.5 ppm is
covered by the entry for vegetable,
legume, group 6, except soybean at 3.5
ppm and potato at 0.5 ppm is covered
by the entry for vegetable, tuberous and
corm, subgroup 1C at 1.0 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) or Executive
Order 13045, entitled ‘‘Protection of
Children from Environmental Health
Risks and Safety Risks’’ (62 FR 19885,
April 23, 1997). 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
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06MYR1
27342
Federal Register / Vol. 81, No. 88 / Friday, May 6, 2016 / Rules and Regulations
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
Lhorne on DSK30JT082PROD with RULES
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.
VerDate Sep<11>2014
13:56 May 05, 2016
Jkt 238001
Dated: April 28, 2016.
Susan Lewis,
Director, Registration Division, Office of
Pesticide Programs.
Parts
per
million
Commodity
PART 180—[AMENDED]
1. The authority citation for part 180
continues to read as follows:
*
*
*
*
Onion, bulb, subgroup 3–07A ....
*
0.50
*
*
*
*
Rapeseed subgroup 20A, except
flax seed ..................................
Therefore, 40 CFR chapter I is
amended as follows:
*
0.50
■
Authority: 21 U.S.C. 321(q), 346a and 371.
2. In § 180.458, in the table in
paragraph (a):
■ a. Remove the entry for ‘‘Bean, dry,
seed;’’
■ b. Add alphabetically an entry for
‘‘Berry, low growing, subgroup 13–07G,
except cranberry;’’
■ c. Remove the entry for ‘‘Canola
seed;’’
■ d. Add alphabetically an entry for
‘‘Cottonseed subgroup 20C;’’
■ e. Remove the entry for ‘‘Cotton,
undelinted seed;’’
■ f. Add alphabetically entries for
‘‘Fruit, pome, group 11–10’’ and ‘‘Fruit,
stone, group 12–12;’’
■ g. Remove the entries for ‘‘Mustard,
seed’’ and ‘‘Onion, bulb;’’
■ h. Add alphabetically an entry for
‘‘Onion, bulb, subgroup 3–07A;’’
■ i. Remove the entries for ‘‘Peach’’ and
‘‘Potato;’’
■ j. Add alphabetically an entry for
‘‘Rapeseed subgroup 20A, except flax
seed;’’
■ k. Remove the entries for ‘‘Safflower,
seed,’’ ‘‘Sesame, seed,’’ and
‘‘Strawberry;’’
■ l. Add alphabetically an entry for
‘‘Stevia, dried leaves;’’
■ m. Remove the entries for ‘‘Sunflower,
seed,’’ and ‘‘Vegetable, fruiting group
8;’’ and
■ n. Add alphabetically the entries for
‘‘Sunflower subgroup 20B’’ and
‘‘Vegetable, fruiting, group 8–10.’’
The additions read as follows:
■
*
*
*
*
Stevia, dried leaves ....................
*
*
*
*
*
Sunflower subgroup 20B ............
*
*
*
*
*
Vegetable, fruiting, group 8–10 ..
*
*
*
*
*
*
*
*
*
12
5.0
1.0
*
*
[FR Doc. 2016–10738 Filed 5–5–16; 8:45 am]
BILLING CODE 6560–50–P
FEDERAL COMMUNICATIONS
COMMISSION
47 CFR Part 11
[ET Docket No. 04–296; FCC 16–32]
Amendment of the Emergency Alert
System
Federal Communications
Commission.
ACTION: Final rule.
AGENCY:
In this document, the Federal
Communications Commission (FCC or
Commission) revises its rules governing
the Emergency Alert System (EAS) to
incorporate new multilingual alerting
reporting requirements into its State
EAS Plan reporting requirements. The
Commission takes this action in
response to a Petition for Immediate
Interim Relief (Petition) jointly filed by
the Independent Spanish Broadcasters
Association (ISBA), the Office of
§ 180.458 Clethodim; tolerance for
Communication of the United Church of
residues.
Christ, Inc., and the Minority Media and
Telecommunications Council (now
(a) * * *
called The Multicultural, Media,
Parts
Telecom and Internet Council) (MMTC)
Commodity
per
(collectively, ‘‘Petitioners’’).
million
DATES: Effective June 6, 2016, except for
the amendments to § 11.21(d) through
(f), which contain modifications to
*
*
*
*
*
Berry, low growing, subgroup
information collection requirements that
13–07G, except cranberry ......
3.0 were previously approved by the Office
of Management and Budget (OMB).
*
*
*
*
*
Once OMB has approved the
Cottonseed subgroup 20C .........
1.0
modifications to these collections, the
Commission will publish a document in
*
*
*
*
*
Fruit, pome, group 11–10 ...........
0.20 the Federal Register announcing the
Fruit, stone, group 12–12 ...........
0.20 effective date of those paragraphs and
rule amendments.
PO 00000
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Fmt 4700
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SUMMARY:
E:\FR\FM\06MYR1.SGM
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Agencies
[Federal Register Volume 81, Number 88 (Friday, May 6, 2016)]
[Rules and Regulations]
[Pages 27337-27342]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-10738]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2015-0035; FRL-9945-68]
Clethodim; Pesticide Tolerances
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes tolerances for residues of
clethodim in or on multiple commodities which are identified and
discussed later in this document. Interregional Research Project Number
4 (IR-4) requested these tolerances under the Federal Food, Drug, and
Cosmetic Act (FFDCA).
DATES: This regulation is effective May 6, 2016. Objections and
requests for hearings must be received on or before July 5, 2016, 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-2015-0035, 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 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: Susan Lewis, 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-2015-0035 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
July 5, 2016. 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-2015-0035, 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 Wednesday, May 20, 2015 (80 FR 28925)
(FRL-9927-39), 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 4E8334) by Interregional Research Project Number 4 (IR-4),
500 College Road East, Suite 201 W, Princeton, NJ 08540. The petition
requested that 40 CFR 180.458 be amended by establishing tolerances for
residues of the herbicide clethodim, 2-[(1E)-1-[[[(2E)-3-chloro-2-
propenyl]oxy]imino]propyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-
cyclohexen-1-one, and its metabolites containing the 5-(2-
ethylthiopropyl)cyclohexene-3-one and 5-(2-ethylthiopropyl)-5-
hydroxycyclohexene-3-one moieties and their sulphoxides and sulphones,
calculated as the stoichiometric equivalent of clethodim, in or on
stevia at 12 parts per million (ppm); pome fruit group 11-10 at 0.2
ppm; stone fruit group 12-12 at 0.2 ppm; bulb onion subgroup 3-07A at
0.2 ppm; low growing berry subgroup 13-07G, except cranberry at 3.0
ppm; rapeseed subgroup 20A, except flax 0.5 ppm;
[[Page 27338]]
sunflower subgroup 20B at 5.0 ppm; cottonseed subgroup 20C at 1.0 ppm;
and fruiting vegetable group 08-10 at 1.0 ppm. Also, this notice
further requests amending 40 CFR 180.458 by removing the following
commodity listings: canola seed at 0.5 ppm, cotton, undelinted seed at
1.0 ppm, peach at 0.2 ppm, onion, bulb at 0.2 ppm, strawberry at 3.0
ppm, and sunflower, seed at 5.0 ppm, upon establishment of the
aforementioned tolerances. That document referenced a summary of the
petition prepared by Valent USA Corporation, 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 made
some modifications to petitioned-for crop tolerances. The reasons for
these changes are 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 clethodim including exposure
resulting from the tolerances established by this action. EPA's
assessment of exposures and risks associated with clethodim follows.
A. Toxicological Profile
EPA has evaluated the available toxicity data and considered their
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.
The liver is the target organ based on repeated dosing by either
oral or dermal routes in rats, mice, and dogs. The observed liver
effects are characterized by increased liver weights, clinical
chemistry changes, and centrilobular hepatic hypertrophy. Most of the
liver effects that occurred at or below 100 milligrams/kilogram body
weight (mg/kg bw) were considered as adaptive effects and not adverse.
Decreased body weight was also a common finding across studies and
species. In the 1-year dog oral toxicity study, hematological changes
such as increased platelet and leukocyte counts were also noted.
Developmental effects were not present in rabbits; the rat
developmental toxicity study showed reduced fetal body weights and an
increase in the incidence of delayed ossification of the lower
vertebrae at the same dose where maternal toxicity was found. Neither
reproductive nor offspring effects were seen in the 2-generation rat
reproduction study. Therefore, the data did not show an increased
susceptibility in the young. The clethodim database also showed no
potential for neurotoxicity or immunotoxicity.
The rat and mouse carcinogenicity studies did not show treatment-
related increases in tumor incidence. Clethodim is not genotoxic and is
classified as ``not likely to be carcinogenic to humans.''
Specific information on the studies received and the nature of the
adverse effects caused by Clethodim 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 document'', Clethodim. Human Health Aggregate
Risk Assessment for the Proposed New Uses on Stevia, Pome Fruit Group
11-10, Stone Fruit Group 12-12, Bulb Onion Subgroup 3-07A, Low Growing
Berry Subgroup 13-07G, (except Cranberry); Rapeseed Subgroup 20A
(except Flax Seed), Sunflower Subgroup 20B, Cottonseed Subgroup 20C,
and Fruiting Vegetable Group 8-10, pages number 29 through 34 in docket
ID number EPA-HQ-OPP-2015-0035.
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 clethodim used for
human risk assessment is shown in Table 1 of this unit.
[[Page 27339]]
Table 1--Summary of Toxicological Doses and Endpoints for Clethodim for Use in Human Health Risk Assessment
----------------------------------------------------------------------------------------------------------------
Point of departure
Exposure/scenario and uncertainty/ RfD, PAD, LOC for Study and toxicological effects
safety factors risk assessment
----------------------------------------------------------------------------------------------------------------
Acute dietary (All populations).. NOAEL = 100 mg/kg/ Acute RfD = 1 mg/kg/ Acute neurotoxicity studies--rats.
day. day. LOAEL = 1,000 mg/kg based on
UFA = 10x........... aPAD = 1 mg/kg/day. clinical observation from two
UFH = 10x........... acute neurotoxicity studies (one
FQPA SF = 1x........ study was conducted in 2006 and
another was completed in 2012).
The clinical observation included
decreased spontaneous activity,
ruffled fur, head tilt, and
hunched posture.
Chronic dietary (All populations) NOAEL = 30 mg/kg/day Chronic RfD = 0.3 Carcinogenicity study--mice.
UFA = 10x........... mg/kg/day. LOAEL = 150 mg/kg/day based on
UFH = 10x........... cPAD = 0.3 mg/kg/ reduced survival; decreased red
FQPA SF = 1x........ day. cell mass; and increased
incidences of bile duct
hyperplasia, of pigmentation of
the liver, and of foci of
amphophilic macrophages in the
lung.
Incidental Oral Short-Term (1-30 NOAEL = 75 mg/kg/day LOC for MOE = 100.. 90-day oral toxicity--dogs.
days). UFA = 10X........... LOAEL = 125 mg/kg/day based on
UFH = 10X........... increased absolute and relative
FQPA SF = 1X........ liver weights, and histological
changes characterized by
cytoplasmic vesiculation and
vacuolation of the central
lobular hepatocytes in both
sexes.
Inhalation Short-Term (1 to 30 NOAEL = 75 mg/kg/day LOC for MOE = 100.. 90-day oral toxicity--dogs
days). UFA = 10X........... LOAEL = 125 mg/kg/day based on
UFH = 10X........... increased absolute and relative
FQPA SF = 1X........ liver weights, and histological
changes characterized by
cytoplasmic vesiculation and
vacuolation of the central
lobular hepatocytes in both
sexes.
------------------------------------------------------------------------------
Cancer (Oral, dermal, inhalation) Clethodim is classified as ``Not Likely'' to be carcinogenic based no
treatment-related increase in tumor incidence in rat and mouse
carcinogenicity studies.
----------------------------------------------------------------------------------------------------------------
FQPA SF = Food Quality Protection Act Safety Factor. LOAEL = lowest-observed-adverse-effect-level. LOC = level
of concern. mg/kg/day = milligram/kilogram/day. NOAEL = no-observed-adverse-effect-level. PAD = population
adjusted dose (a = acute, c = chronic). RfD = reference dose. UF = uncertainty factor. UFA = extrapolation
from animal to human (interspecies). UFH = potential variation in sensitivity among members of the human
population (intraspecies).
C. Exposure Assessment
1. Dietary exposure from food and feed uses. In evaluating dietary
exposure to clethodim, EPA considered exposure under the petitioned-for
tolerances as well as all existing clethodim tolerances in 40 CFR
180.458. EPA assessed dietary exposures from clethodim 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.
Such effects were identified for clethodim. In estimating acute
dietary exposure, EPA used the Dietary Exposure Evaluation Model
software with the Food Commodity Intake Database (DEEM-FCID), Version
3.16, which incorporates 2003-2008 food consumption data from the U.S.
Department of Agriculture's (USDA's) National Health and Nutrition
Examination Survey, What We Eat in America, (NHANES/WWEIA). As to
residue levels in food, EPA conducted unrefined acute dietary analyses
assuming tolerance-level residues for all commodities and 100 percent
crop treated (PCT). Unless tolerances were established for processed
commodities, DEEM version 7.81 default processing factors were assumed.
ii. Chronic exposure. In conducting the chronic dietary exposure
assessment EPA used the DEEM-FCID, Version 3.16, which incorporates
2003-2008 food consumption data from the USDA's NHANES/WWEIA. As to
residue levels in food, EPA conducted unrefined chronic dietary
analyses assuming tolerance-level residues for all commodities and 100
PCT. Unless tolerances were established for processed commodities, DEEM
version 7.81 default processing factors were assumed.
iii. Cancer. Based on the data summarized in Unit III.A., EPA has
concluded that clethodim does not pose a cancer risk to humans.
Therefore, a dietary exposure assessment for the purpose of assessing
cancer risk was not conducted.
iv. Anticipated residue and percent crop treated (PCT) information.
EPA did not use anticipated residue and/or PCT information in the
dietary assessment for clethodim. 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 clethodim in drinking water. These simulation models
take into account data on the physical, chemical, and fate/transport
characteristics of clethodim. 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 First Index Reservoir Screening Tool (FIRST) and
Pesticide Root Zone Model Ground Water (PRZM GW) models, the estimated
drinking water concentrations (EDWCs) of clethodim for acute exposures
are 330 parts per billion (ppb) for surface water and 1,430 ppb for
ground water.
For chronic exposures for non-cancer assessments are estimated to
be 137 ppb for surface water and 1,150 ppb for ground water.
Modeled estimates of drinking water concentrations were directly
entered into the dietary exposure model.
For acute dietary risk assessment, the water concentration value of
1,430 ppb was used to assess the contribution to drinking water.
For chronic dietary risk assessment, the water concentration of
value 1,150 ppb was used to assess the contribution to drinking water.
3. From non-dietary exposure. The term ``residential exposure'' is
used in this document to refer to non-
[[Page 27340]]
occupational, non-dietary exposure (e.g., for lawn and garden pest
control, indoor pest control, termiticides, and flea and tick control
on pets).
Clethodim is currently registered for the following uses that could
result in residential exposures: In and around ornamental plant beds,
landscaped area, trees, and ground covers (mulch). There are no
residential uses associated with proposed new uses. EPA has previously
assessed clethodim residential exposure using the following
assumptions: Short-term residential handler inhalation exposures
represent the ``worst case'' high-end exposure. Because a dermal hazard
was not identified, residential handler and post-application dermal
risk assessments were not conducted. No other post-application
exposures were assessed either because the potential for exposure via
non-dietary ingestion for young children is unlikely due to the limited
residential uses for clethodim products. The extent to which young
children engage in the types of activities associated with these areas
(i.e., ornamental landscapes) or utilize these areas for prolonged
periods of play is low. No intermediate-term or chronic exposures are
expected from the currently registered residential uses.
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 clethodim to share a common mechanism of toxicity
with any other substances, and clethodim does not appear to produce a
toxic metabolite produced by other substances. For the purposes of this
tolerance action, therefore, EPA has assumed that clethodim 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. There is no evidence of
increased susceptibility of fetuses as compared to maternal animals
following in utero and/or postnatal exposure to clethodim in the
developmental toxicity studies in rats or rabbits, and no increased
sensitivity in pups as compared to adults in the 2-generation rat
reproduction toxicity study. There are no residual uncertainties
concerning prenatal and postnatal toxicity and no neurotoxicity
concerns.
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 clethodim is complete.
ii. There is no indication that clethodim 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 of increased susceptibility of fetuses as
compared to maternal animals following in utero and/or postnatal
exposure to clethodim in the developmental toxicity studies in rats or
rabbits, and no increased sensitivity in pups as compared to adults in
the 2-generation rat reproduction toxicity study. In the rat
developmental study, reduced ossification seen at the same dose that
resulted in maternal toxicity is considered secondary to reduced
maternal body weight, and is not considered qualitative susceptibility.
There are no residual uncertainties concerning prenatal and postnatal
toxicity and no neurotoxicity concerns.
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 clethodim in drinking water. Post application
exposure of children and incidental oral exposures to toddlers are
expected to be negligible. All exposure estimates are based on
conservative assumptions that will not underestimate the exposure and
risks posed by clethodim.
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. Acute exposure is not expected for the residential
exposure pathway. Therefore, the acute aggregate risk would be
equivalent to the acute dietary exposure estimates.
Using the exposure assumptions discussed in this unit for acute
exposure, the acute dietary exposure from food and water to clethodim
will occupy 29% of the aPAD for all infants <1 year old, the population
group receiving the greatest exposure.
2. Chronic risk. There are no chronic residential exposure
scenarios. Therefore, the chronic aggregate risk would be equivalent to
the chronic dietary exposure (food and drinking water) estimate. Using
the exposure assumptions described in this unit for chronic exposure,
EPA has concluded that chronic exposure to clethodim from food and
water will utilize 30% of the cPAD for all infants <1 year old, the
population group receiving the greatest exposure.
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). Clethodim 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
[[Page 27341]]
clethodim. 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 the short-term aggregate
risk estimate for adults ages 20-49 is a MOE of 2,200. Because EPA's
level of concern for clethodim is a MOE of 100 or below, this MOE is
not of concern.
4. Intermediate-term risk. An intermediate-term adverse effect was
identified; however, clethodim is not registered for any use patterns
that would result in intermediate-term residential exposure.
Intermediate-term risk is assessed based on intermediate-term
residential exposure plus chronic dietary exposure. Because there is no
intermediate-term residential exposure and chronic dietary exposure has
already been assessed under the appropriately protective cPAD (which is
at least as protective as the POD used to assess intermediate-term
risk), no further assessment of intermediate-term risk is necessary,
and EPA relies on the chronic dietary risk assessment for evaluating
intermediate-term risk for clethodim.
5. Aggregate cancer risk for U.S. population. Based on the lack of
evidence of carcinogenicity in two adequate rodent carcinogenicity
studies, clethodim is not expected to pose a cancer risk to humans.
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 clethodim residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodologies are available: FDA Multiresidue
Methods, gas chromatography/flame photometric detection in the sulfur
mode (GC/FPD-S) and gas chromatography method with mass selective
detection (GC/MSD).
These methods have been adequately validated for the analyses of
residues of clethodim in/on crop matrices.
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 established MRLs for clethodim in or on onion bulb
and garlic at 0.5 ppm, tomato at 1 ppm, rapeseed at 0.5 ppm, sunflower
seed at 0.5 ppm, and cotton seed at 0.5 ppm. The U.S. tolerances for
rapeseed subgroup 20A, fruiting vegetables crop group 8-10, and onion,
bulb, subgroup 3-07A are harmonized with the Codex MRLs for rapeseed,
tomato, and bulb onion and garlic, respectively.
However, the U.S. tolerances for sunflower subgroup 20B and
cottonseed subgroup 20C are not harmonized with the corresponding Codex
MRLs for sunflower seed and cotton seed since the MRL values are lower
than the U.S tolerances. The U.S. tolerances cannot be lowered to
harmonize because doing so could result in residues above the
tolerances when following the U.S. approved label directions.
C. Revisions to Petitioned-for Tolerances
The Agency made changes to the naming of certain petitioned-for
commodities to reflect the current commodity definitions and
significant figures used by the Agency. Although the petitioner
requested a tolerance on stevia only, EPA established a tolerance on
stevia, dried leaves because the dried commodity represents stevia that
will be found in the U.S. trade market. Moreover, the Agency is
removing certain commodities from the table at Sec. 180.458(a) in
order to eliminate redundancies upon the establishment of new crop
group tolerances that were not identified in the petition: mustard,
seed at 0.5 ppm, safflower, seed at 5.0 ppm, sesame, seed at 0.35 ppm,
vegetable, fruiting group 8 at 1.0 ppm.
V. Conclusion
Therefore, tolerances are established for residues of clethodim, 2-
[(1E)-1-[[[(2E)-3-chloro-2-propenyl]oxy]imino]propyl]-5-[2-
(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one, and its metabolites
containing the 5-(2-ethylthiopropyl)cyclohexene-3-one and 5-(2-
ethylthiopropyl)-5-hydroxycyclohexene-3-one moieties and their
sulphoxides and sulphones, calculated as the stoichiometric equivalent
of clethodim, in or on berry, low growing, subgroup 13-07G, except
cranberry at 3.0 ppm; cottonseed subgroup 20C at 1.0 ppm; fruit, pome,
group 11-10 at 0.20 ppm; fruit, stone, group 12-12 at 0.20 ppm; onion,
bulb, subgroup 3-07A at 0.50 ppm; rapeseed subgroup 20A, except flax
seed at 0.50 ppm; stevia, dried leaves at 12 ppm; sunflower subgroup
20B at 5.0 ppm; and vegetable, fruiting, group 8-10 at 1.0 ppm. EPA is
also removing the following established tolerances that are superseded
by this action: Canola seed, at 0.50 ppm; cotton, undelinted seed at
1.0 ppm; mustard, seed at 0.50 ppm; peach at 0.20 ppm; onion, bulb at
0.20 ppm; strawberry at 3.0 ppm; safflower, seed at 5.0 ppm; sesame,
seed at 0.35 ppm; sunflower, seed at 5.0 ppm; vegetable, fruiting group
8 at 1.0 ppm. Finally, as a housekeeping measure, the Agency is
removing two individual tolerances that are subsumed within other crop
group tolerances contained in Sec. 180.458: Bean, dry, seed at 2.5 ppm
is covered by the entry for vegetable, legume, group 6, except soybean
at 3.5 ppm and potato at 0.5 ppm is covered by the entry for vegetable,
tuberous and corm, subgroup 1C at 1.0 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) or Executive Order 13045, entitled
``Protection of Children from Environmental Health Risks and Safety
Risks'' (62 FR 19885, April 23, 1997). 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
[[Page 27342]]
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: April 28, 2016.
Susan Lewis,
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. 180.458, in the table in paragraph (a):
0
a. Remove the entry for ``Bean, dry, seed;''
0
b. Add alphabetically an entry for ``Berry, low growing, subgroup 13-
07G, except cranberry;''
0
c. Remove the entry for ``Canola seed;''
0
d. Add alphabetically an entry for ``Cottonseed subgroup 20C;''
0
e. Remove the entry for ``Cotton, undelinted seed;''
0
f. Add alphabetically entries for ``Fruit, pome, group 11-10'' and
``Fruit, stone, group 12-12;''
0
g. Remove the entries for ``Mustard, seed'' and ``Onion, bulb;''
0
h. Add alphabetically an entry for ``Onion, bulb, subgroup 3-07A;''
0
i. Remove the entries for ``Peach'' and ``Potato;''
0
j. Add alphabetically an entry for ``Rapeseed subgroup 20A, except flax
seed;''
0
k. Remove the entries for ``Safflower, seed,'' ``Sesame, seed,'' and
``Strawberry;''
0
l. Add alphabetically an entry for ``Stevia, dried leaves;''
0
m. Remove the entries for ``Sunflower, seed,'' and ``Vegetable,
fruiting group 8;'' and
0
n. Add alphabetically the entries for ``Sunflower subgroup 20B'' and
``Vegetable, fruiting, group 8-10.''
The additions read as follows:
Sec. 180.458 Clethodim; tolerance for residues.
(a) * * *
------------------------------------------------------------------------
Parts per
Commodity million
------------------------------------------------------------------------
* * * * *
Berry, low growing, subgroup 13-07G, except cranberry....... 3.0
* * * * *
Cottonseed subgroup 20C..................................... 1.0
* * * * *
Fruit, pome, group 11-10.................................... 0.20
Fruit, stone, group 12-12................................... 0.20
* * * * *
Onion, bulb, subgroup 3-07A................................. 0.50
* * * * *
Rapeseed subgroup 20A, except flax seed..................... 0.50
* * * * *
Stevia, dried leaves........................................ 12
* * * * *
Sunflower subgroup 20B...................................... 5.0
* * * * *
Vegetable, fruiting, group 8-10............................. 1.0
* * * * *
------------------------------------------------------------------------
* * * * *
[FR Doc. 2016-10738 Filed 5-5-16; 8:45 am]
BILLING CODE 6560-50-P