Saflufenacil; Pesticide Tolerances, 73663-73667 [2015-29889]
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Federal Register / Vol. 80, No. 227 / Wednesday, November 25, 2015 / Rules and Regulations
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2014–0640; FRL–9936–71]
Saflufenacil; Pesticide Tolerances
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
This regulation establishes
tolerances for residues of saflufenacil in
or on pomegranate. BASF Corporation
requested these tolerances under the
Federal Food, Drug, and Cosmetic Act
(FFDCA).
SUMMARY:
This regulation is effective
November 25, 2015. Objections and
requests for hearings must be received
on or before January 25, 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–2014–0640, 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, Director, 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:
DATES:
I. General Information
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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
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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–2014–0640 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 January 25, 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–
2014–0640, 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
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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 February
11, 2015, (80 FR 7559) (FRL–9921–94),
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) 4F8305 by BASF
Corporation, 26 Davis Drive, P.O. Box
13528, Research Triangle Park, NC
27709–3528. The petition requested that
40 CFR 180.649 be amended by
establishing tolerances for residues of
the herbicide, saflufenacil (2-chloro-5[3,6-dihydro-3-methyl-2,6-dioxo-4(trifluoromethyl)-1(2H)-pyrimidinyl]-4fluoro-N-[[methyl(1-methylethyl)
amino]sulfonyl]benzamide) and its
metabolites, in or on pomegranate at
0.03 parts per million (ppm). That
document referenced a summary of the
petition prepared by BASF Corporation,
the registrant, which is available in the
docket, https://www.regulations.gov.
Comments were received on the notice
of filing. EPA’s response to these
comments is discussed 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
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sufficient data to assess the hazards of
and to make a determination on
aggregate exposure for saflufenacil,
including exposure resulting from the
tolerances established by this action.
EPA’s assessment of exposures and risks
associated with saflufenacil 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.
The effects observed following
repeated oral exposures to saflufenacil
are consistent with the proposed mode
of toxicity involving inhibition of
protoporphyrinogen oxidase (PPO) in
mammals, resulting in disruption of
heme biosynthesis. Toxicological effects
from subchronic and chronic toxicity
studies in rats, mice and dogs consisted
of decreased hematological parameters
(RBC, Ht, MCV, MCH, and MCHC) at
approximately the same dose level (13–
39 mg/kg/day), except in the case of the
dog, where the effects were seen at a
slightly higher dose (50–100 mg/kg/
day). In line with the absorption,
distribution, metabolism, and excretion
(ADME) findings suggesting that male
rats achieve a greater systemic exposure
than females, males were the most
sensitive sex in mice and rats, with
LOAELs approximately 3–4X lower than
their female counterparts. The
hematological effects resulting from oral
exposures to saflufenacil occurred
around the same dose level from shortthrough long-term exposures without
increasing in severity. Toxic effects
were also seen in the liver (increased
organ weight, centrilobular fatty change,
lymphoid infiltrate) in mice, the spleen
(increased organ weight and
extramedullary hematopoiesis) in rats,
and in both of these organs (increased
iron storage in the liver and
extramedullary hematopoiesis in the
spleen) in dogs. These effects also
occurred around the same dose level
from short- through long-term exposures
without a progression in severity.
Evidence for increased pre- and/or
postnatal susceptibility was noted from
the developmental toxicity studies in
the rat and rabbit and in the 2-
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generation reproduction study in the rat.
Decreased fetal body weights and
increased skeletal variations occurred at
doses (20 mg/kg/day) that were not
maternally toxic in the developmental
study in rats. Similarly, in rabbits,
increased liver porphyrins in fetuses
were observed at doses (200 mg/kg/day)
that were not maternally toxic. In the 2generation reproductive toxicity study
in rats, there was evidence of increased
qualitative susceptibility based on an
increased number of stillborn pups,
decreased pup viability and lactation
indices, decreased pre-weaning bodyweight and/or body-weight gain, and
changes in hematological parameters at
the same dose level as less severe
maternal effects consisting of
decrements in food intake, body-weight,
body-weight gain, and changes in organ
weights and hematological parameters
indicative of anemia.
In an acute neurotoxicity (ACN) study
in rats, a decrease in motor activity was
observed on the day of dosing at the
limit dose (2,000 mg/kg/day) in males
only. However, the finding was not
accompanied by any neuropathological
changes and was considered a reflection
of a mild and transient general systemic
toxicity and not a substance-specific
neurotoxic effect. In the subchronic
neurotoxicity (SCN) study, systemic
toxicity (anemia) was seen at 1,000 ppm
(66.2 mg/kg/day) and 1,350 ppm (101
mg/kg/day) in males and females,
respectively. There was no evidence of
neurotoxicity or neuropathology in
either the acute or subchronic
neurotoxicity study.
In a 28-day dermal toxicity study in
rats, saflufenacil did not induce any
type of dermal or systemic toxicity up
to the limit dose of 1,000 mg/kg bw/day.
Based on the results of acute toxicity
studies, saflufenacil was ranked low for
acute toxicity via the oral, dermal, and
inhalation route of exposure. It was not
classified as a dermal irritant or dermal
sensitizer.
In a 28-day immunotoxicity study in
mice, saflufenacil failed to induce
toxicity specific to the immune system
at the highest dose tested (i.e., 52 mg/
kg bw/day).
Saflufenacil was weakly clastogenic
in the in vitro chromosomal aberration
assay in V79 cells in the presence of S9
activation; however, the response was
not evident in the absence of S9
activation. It was neither mutagenic in
bacterial cells nor clastogenic in rodents
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in vivo. Carcinogenicity studies in rats
and mice showed no evidence of
increased incidence of tumors at the
tested doses. Saflufenacil is classified as
‘‘not likely carcinogenic to humans.’’
Specific information on the studies
received and the nature of the adverse
effects caused by saflufenacil 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 document
Saflufenacil. ‘‘Human Health Risk
Assessment in Support of Tolerances for
Residues in/on Pomegranate’’ pgs. 26–
30 in docket ID number EPA–HQ–OPP–
2014–0640.
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 saflufenacil used for
human risk assessment is shown in
Table 1 of this unit.
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TABLE 1—SUMMARY OF TOXICOLOGICAL DOSES AND ENDPOINTS FOR SAFLUFENACIL 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 dietary (General population including infants and
children).
NOAEL = 500 mg/kg bw ......
UFA = 10x
UFH = 10x
FQPA SF = 1x
Acute RfD = 5 mg/kg ...........................
aPAD = 5 mg/kg
Chronic dietary (All populations).
NOAEL = 4.6 mg/kg/day ......
UFA =10x
UFH = 10x
FQPA SF = 1x
Chronic RfD = 0.046mg/kg/day ............
cPAD = 0.046 mg/kg/day
Acute Neurotoxicity Study (rat). LOAEL
= 2,000 mg/kg bw based on decreased motor activity representing
mild and transient systemic toxicity
in males.
Chronic/Carcinogenicity
(mouse).
LOAEL = 13.8 mg/kg bw/day based
on decreased red blood cells, hemoglobin, hematocrit, and porphyria observed in the satellite group.
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 saflufenacil, EPA
considered exposure under the
petitioned-for tolerances as well as all
existing saflufenacil tolerances in 40
CFR 180.649. EPA assessed dietary
exposures from saflufenacil 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
saflufenacil. In estimating acute dietary
exposure, EPA used food consumption
information from the United States
Department of Agriculture (USDA)
National Health and Nutrition
Examination Survey, What We Eat in
America, (NHANES/WWEIA; 2003–
2008). As to residue levels in food, EPA
used an unrefined approach by
assuming that 100% of the crop is
treated and that residues are present at
the tolerance-level or at tolerance-levels
adjusted to account for the residues of
concern for risk assessment for all foods.
EPA also used default processing factors
using the Dietary Exposure Evaluation
Model (DEEM) 7.8.
ii. Chronic exposure. In conducting
the chronic dietary exposure assessment
EPA used the same conservative
assumptions that were used for the
acute dietary assessment noted above.
iii. Cancer. Based on the data
summarized in Unit III.A., EPA has
concluded that saflufenacil does not
pose a cancer risk to humans. Therefore,
a dietary exposure assessment for the
purpose of assessing cancer risk is
unnecessary.
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iv. Anticipated residue and percent
crop treated (PCT) information. EPA did
not use anticipated residue and/or PCT
information in the dietary assessment
for saflufenacil. Tolerance-level residues
and/or 100% CT 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 saflufenacil in drinking water. These
simulation models take into account
data on the physical, chemical, and fate/
transport characteristics of saflufenacil.
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
Pesticide Root Zone Model Ground
Water (PRZM GW), the estimated
drinking water concentrations (EDWCs)
of saflufenacil for acute exposures are
estimated to be 133 parts per billion
(ppb) for surface water and 69.2 ppb for
ground water.
The EDWCs for chronic exposures for
non-cancer assessments are estimated to
be 120 ppb for surface water and 51.5
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 133 ppb was
used to assess the contribution to
drinking water. For chronic dietary risk
assessment, the water concentration of
value 120 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 nonoccupational, non-dietary exposure
(e.g., for lawn and garden pest control,
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indoor pest control, termiticides, and
flea and tick control on pets).
Saflufenacil is not registered for any
specific use patterns that would result
in residential exposure.
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 saflufenacil to
share a common mechanism of toxicity
with any other substances, and
saflufenacil does not appear to produce
a toxic metabolite produced by other
substances. For the purposes of this
tolerance action, therefore, EPA has
assumed that saflufenacil 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
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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.
As discussed in III.A., there is evidence
of increased pre- and/or postnatal
susceptibility in the developmental
toxicity studies in the rat and rabbit and
in the 2-generation reproduction study
in the rat. The concern for increased
susceptibility following prenatal or
postnatal exposure is low because clear
NOAELs/LOAELs were established for
the developmental effects seen in rats
and rabbits as well as for the offspring
effects seen in the 2-generation
reproductive toxicity study. Further, the
dose-response relationship for the
effects of concern are also well
characterized and being used for
assessing risks. The point of departure
for risk assessments would be protective
of the developmental and offspring
effects.
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
saflufenacil is complete.
ii. There was no evidence of
neurotoxicity or neuropathology in the
acute and subchronic neurotoxicity
study. The decrease in motor activity
observed in the acute neurotoxicity
study on the day of dosing at the limit
dose (2,000 mg/kg/day) in males is
considered a reflection of a mild and
transient general systemic toxicity and
not a substance-specific neurotoxic
effect. No neurotoxic effects were seen
in the sub-chronic neurotoxicity study.
iii. The concern for increased
susceptibility following prenatal or
postnatal exposure is low because clear
NOAELs/LOAELs were established for
the developmental effects seen in rats
and rabbits as well as for the offspring
effects seen in the 2-generation
reproductive toxicity study. Further, the
dose-response relationship for the
effects of concern are also well
characterized and being used for
assessing risks. The POD for risk
assessments would be protective of the
developmental and offspring effects.
iv. There are no residual uncertainties
identified in the exposure databases.
The dietary food exposure assessments
were performed based on 100% CT and
tolerance-level residues. EPA made
conservative (protective) assumptions in
the ground and surface water modeling
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used to assess exposure to saflufenacil
in drinking water. These assessments
will not underestimate the exposure and
risks posed by saflufenacil.
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. Using the exposure
assumptions discussed in this unit for
acute exposure, the acute dietary
exposure from food and water to
saflufenacil will occupy less than 1% of
the aPAD for all infants (<1-year old),
the population group receiving the
greatest exposure.
2. Chronic risk. Using the exposure
assumptions described in this unit for
chronic exposure, EPA has concluded
that chronic exposure to saflufenacil
from food and water will utilize 20% of
the cPAD for all infants (<1-year old) the
population group receiving the greatest
exposure. There are no residential uses
for saflufenacil.
3. Short-term and intermediate-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).
Intermediate-term aggregate exposure
takes into account intermediate-term
residential exposure plus chronic
exposure to food and water. Since there
are no registered or proposed residential
uses for saflufenacil that would result in
short or intermediate-term residential
exposures, 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 short-term risk), no further
assessment of short or intermediate-term
risk is necessary, and EPA relies on the
chronic dietary risk assessment for
evaluating short and intermediate-term
risk for saflufenacil.
4. Aggregate cancer risk for U.S.
population. Based on the lack of
evidence of carcinogenicity in two
adequate rodent carcinogenicity studies,
saflufenacil is not expected to pose a
cancer risk to humans.
5. Determination of safety. Based on
these risk assessments, EPA concludes
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that there is a reasonable certainty that
no harm will result to the general
population, or to infants and children
from aggregate exposure to saflufenacil
residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodology
(liquid chromatography/mass
spectroscopy/mass spectroscopy (LC/
MS/MS) Method D0603/02) is available
to enforce the tolerance expression. 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 a MRL for saflufenacil on
pomegranate. Therefore, harmonization
of MRLs and U.S. tolerances is not an
issue at this time.
C. Response to Comments
EPA received two comments to the
docket, EPA–HQ–OPP–2014–0640;
however, only one of these public
submissions was in response to the
Notice of Filing for PP# 4F8305, while
the remaining comment pertained to an
unrelated petition in the Federal
Register notice. For PP# 4F8305, the
commenter stated that they are in
support of actions to set tolerance levels
for pesticides on the food we eat and
that we are taking a step in the right
direction by making it safer for human
consumption by placing more
regulations on pesticide chemicals.
EPA agrees with the commenter and
will continue to regulate pesticides
E:\FR\FM\25NOR1.SGM
25NOR1
Federal Register / Vol. 80, No. 227 / Wednesday, November 25, 2015 / Rules and Regulations
under the legal framework provided by
the Federal Insecticide, Fungicide,
Rodenticide Act (FIFRA) and Section
408 of the Federal Food, Drug and
Cosmetic Act (FFDCA), which allows
EPA to assess the risk of pesticides and
set tolerance levels for those pesticides
on food commodities as deemed
necessary to protect human health while
still providing tools for growers so that
they can meet the ever-growing food
demands of this country and others.
jstallworth on DSK7TPTVN1PROD with RULES
V. Conclusion
Therefore, tolerances are established
for residues of saflufenacil, (2-chloro-5[3,6-dihydro-3-methyl-2,6-dioxo-4(trifluoromethyl)-1(2H)-pyrimidinyl]-4fluoro-N-[[methyl(1methylethyl)amino]sulfonyl]benzamide)
and its metabolites, in or on
pomegranate at 0.03 ppm.
VI. Statutory and Executive Order
Reviews
This action establishes a tolerance
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
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
VerDate Sep<11>2014
15:12 Nov 24, 2015
Jkt 238001
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 17, 2015.
Susan Lewis,
Director, Registration Division, Office of
Pesticide Programs.
Therefore, 40 CFR chapter I is
amended as follows:
73667
§ 180.649 Saflufenacil; tolerances for
residues.
(a) * * * (1) * * *
Parts per
million
Commodity
*
*
*
Pomegranate ........................
*
*
*
*
*
*
*
*
*
0.03
*
*
*
[FR Doc. 2015–29889 Filed 11–24–15; 8:45 am]
BILLING CODE 6560–50–P
DEPARTMENT OF HEALTH AND
HUMAN SERVICES
42 CFR Part 80
[Docket No. CDC–2015–0062; NIOSH–286]
RIN 0920–AA55
Occupational Safety and Health
Research and Related Activities:
Removal of Regulations Regarding
Administrative Functions, Practices,
and Procedures
Centers for Disease Control and
Prevention, HHS.
ACTION: Final rule.
AGENCY:
With this action, the
Department of Health and Human
Services (HHS) removes its regulations
pertaining to fees for direct training in
occupational safety and health
conducted by the National Institute for
Occupational Safety and Health
(NIOSH) in the Centers for Disease
Control and Prevention (CDC). As a part
of the retrospective review conducted
by all Federal agencies, HHS has
determined that these regulations are no
longer in use by NIOSH and should be
removed.
DATES: This rule is effective on
November 25, 2015.
FOR FURTHER INFORMATION CONTACT:
Rachel Weiss, Program Analyst, 1090
Tusculum Ave., MS: C–46, Cincinnati,
OH 45226; telephone (855)818–1629
(this is a toll-free number); email
NIOSHregs@cdc.gov.
SUPPLEMENTARY INFORMATION:
SUMMARY:
PART 180—[AMENDED]
I. Public Participation
1. The authority citation for part 180
continues to read as follows:
In a notice of proposed rulemaking
published on August 13, 2015 (80 FR
48473), HHS invited interested persons
or organizations to submit written
views, recommendations, and data
regarding the removal of part 80. We
received no comments on this rule.
■
Authority: 21 U.S.C. 321(q), 346a and 371.
2. In § 180.649, add alphabetically the
entry to the table in paragraph (a)(1) to
read as follows:
■
PO 00000
Frm 00031
Fmt 4700
Sfmt 4700
E:\FR\FM\25NOR1.SGM
25NOR1
Agencies
[Federal Register Volume 80, Number 227 (Wednesday, November 25, 2015)]
[Rules and Regulations]
[Pages 73663-73667]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-29889]
[[Page 73663]]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2014-0640; FRL-9936-71]
Saflufenacil; Pesticide Tolerances
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes tolerances for residues of
saflufenacil in or on pomegranate. BASF Corporation requested these
tolerances under the Federal Food, Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective November 25, 2015. Objections and
requests for hearings must be received on or before January 25, 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-2014-0640, 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, Director, 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-2014-0640 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
January 25, 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-2014-0640, 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 February 11, 2015, (80 FR 7559) (FRL-
9921-94), 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)
4F8305 by BASF Corporation, 26 Davis Drive, P.O. Box 13528, Research
Triangle Park, NC 27709-3528. The petition requested that 40 CFR
180.649 be amended by establishing tolerances for residues of the
herbicide, saflufenacil (2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-
(trifluoromethyl)-1(2H)-pyrimidinyl]-4-fluoro-N-[[methyl(1-methylethyl)
amino]sulfonyl]benzamide) and its metabolites, in or on pomegranate at
0.03 parts per million (ppm). That document referenced a summary of the
petition prepared by BASF Corporation, the registrant, which is
available in the docket, https://www.regulations.gov. Comments were
received on the notice of filing. EPA's response to these comments is
discussed 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
[[Page 73664]]
sufficient data to assess the hazards of and to make a determination on
aggregate exposure for saflufenacil, including exposure resulting from
the tolerances established by this action. EPA's assessment of
exposures and risks associated with saflufenacil 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.
The effects observed following repeated oral exposures to
saflufenacil are consistent with the proposed mode of toxicity
involving inhibition of protoporphyrinogen oxidase (PPO) in mammals,
resulting in disruption of heme biosynthesis. Toxicological effects
from subchronic and chronic toxicity studies in rats, mice and dogs
consisted of decreased hematological parameters (RBC, Ht, MCV, MCH, and
MCHC) at approximately the same dose level (13-39 mg/kg/day), except in
the case of the dog, where the effects were seen at a slightly higher
dose (50-100 mg/kg/day). In line with the absorption, distribution,
metabolism, and excretion (ADME) findings suggesting that male rats
achieve a greater systemic exposure than females, males were the most
sensitive sex in mice and rats, with LOAELs approximately 3-4X lower
than their female counterparts. The hematological effects resulting
from oral exposures to saflufenacil occurred around the same dose level
from short- through long-term exposures without increasing in severity.
Toxic effects were also seen in the liver (increased organ weight,
centrilobular fatty change, lymphoid infiltrate) in mice, the spleen
(increased organ weight and extramedullary hematopoiesis) in rats, and
in both of these organs (increased iron storage in the liver and
extramedullary hematopoiesis in the spleen) in dogs. These effects also
occurred around the same dose level from short- through long-term
exposures without a progression in severity.
Evidence for increased pre- and/or postnatal susceptibility was
noted from the developmental toxicity studies in the rat and rabbit and
in the 2-generation reproduction study in the rat. Decreased fetal body
weights and increased skeletal variations occurred at doses (20 mg/kg/
day) that were not maternally toxic in the developmental study in rats.
Similarly, in rabbits, increased liver porphyrins in fetuses were
observed at doses (200 mg/kg/day) that were not maternally toxic. In
the 2-generation reproductive toxicity study in rats, there was
evidence of increased qualitative susceptibility based on an increased
number of stillborn pups, decreased pup viability and lactation
indices, decreased pre-weaning body-weight and/or body-weight gain, and
changes in hematological parameters at the same dose level as less
severe maternal effects consisting of decrements in food intake, body-
weight, body-weight gain, and changes in organ weights and
hematological parameters indicative of anemia.
In an acute neurotoxicity (ACN) study in rats, a decrease in motor
activity was observed on the day of dosing at the limit dose (2,000 mg/
kg/day) in males only. However, the finding was not accompanied by any
neuropathological changes and was considered a reflection of a mild and
transient general systemic toxicity and not a substance-specific
neurotoxic effect. In the subchronic neurotoxicity (SCN) study,
systemic toxicity (anemia) was seen at 1,000 ppm (66.2 mg/kg/day) and
1,350 ppm (101 mg/kg/day) in males and females, respectively. There was
no evidence of neurotoxicity or neuropathology in either the acute or
subchronic neurotoxicity study.
In a 28-day dermal toxicity study in rats, saflufenacil did not
induce any type of dermal or systemic toxicity up to the limit dose of
1,000 mg/kg bw/day.
Based on the results of acute toxicity studies, saflufenacil was
ranked low for acute toxicity via the oral, dermal, and inhalation
route of exposure. It was not classified as a dermal irritant or dermal
sensitizer.
In a 28-day immunotoxicity study in mice, saflufenacil failed to
induce toxicity specific to the immune system at the highest dose
tested (i.e., 52 mg/kg bw/day).
Saflufenacil was weakly clastogenic in the in vitro chromosomal
aberration assay in V79 cells in the presence of S9 activation;
however, the response was not evident in the absence of S9 activation.
It was neither mutagenic in bacterial cells nor clastogenic in rodents
in vivo. Carcinogenicity studies in rats and mice showed no evidence of
increased incidence of tumors at the tested doses. Saflufenacil is
classified as ``not likely carcinogenic to humans.''
Specific information on the studies received and the nature of the
adverse effects caused by saflufenacil 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 Saflufenacil. ``Human Health Risk
Assessment in Support of Tolerances for Residues in/on Pomegranate''
pgs. 26-30 in docket ID number EPA-HQ-OPP-2014-0640.
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 saflufenacil used for
human risk assessment is shown in Table 1 of this unit.
[[Page 73665]]
Table 1--Summary of Toxicological Doses and Endpoints for Saflufenacil for Use in Human Health Risk Assessment
----------------------------------------------------------------------------------------------------------------
Point of departure
Exposure/scenario and uncertainty/ RfD, PAD, LOC for risk Study and toxicological
safety factors assessment effects
----------------------------------------------------------------------------------------------------------------
Acute dietary (General population NOAEL = 500 mg/kg bw. Acute RfD = 5 mg/kg....... Acute Neurotoxicity Study
including infants and children). UFA = 10x............ aPAD = 5 mg/kg............ (rat). LOAEL = 2,000 mg/
UFH = 10x............ kg bw based on decreased
FQPA SF = 1x......... motor activity
representing mild and
transient systemic
toxicity in males.
Chronic dietary (All populations). NOAEL = 4.6 mg/kg/day Chronic RfD = 0.046mg/kg/ Chronic/Carcinogenicity
UFA =10x............. day. (mouse). LOAEL = 13.8 mg/
UFH = 10x............ cPAD = 0.046 mg/kg/day.... kg bw/day based on
FQPA SF = 1x......... decreased red blood
cells, hemoglobin,
hematocrit, and
porphyria observed in
the satellite group.
----------------------------------------------------------------------------------------------------------------
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 saflufenacil, EPA considered exposure under the petitioned-
for tolerances as well as all existing saflufenacil tolerances in 40
CFR 180.649. EPA assessed dietary exposures from saflufenacil 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 saflufenacil. In estimating acute
dietary exposure, EPA used food consumption information from the United
States Department of Agriculture (USDA) National Health and Nutrition
Examination Survey, What We Eat in America, (NHANES/WWEIA; 2003-2008).
As to residue levels in food, EPA used an unrefined approach by
assuming that 100% of the crop is treated and that residues are present
at the tolerance-level or at tolerance-levels adjusted to account for
the residues of concern for risk assessment for all foods. EPA also
used default processing factors using the Dietary Exposure Evaluation
Model (DEEM) 7.8.
ii. Chronic exposure. In conducting the chronic dietary exposure
assessment EPA used the same conservative assumptions that were used
for the acute dietary assessment noted above.
iii. Cancer. Based on the data summarized in Unit III.A., EPA has
concluded that saflufenacil does not pose a cancer risk to humans.
Therefore, a dietary exposure assessment for the purpose of assessing
cancer risk is unnecessary.
iv. Anticipated residue and percent crop treated (PCT) information.
EPA did not use anticipated residue and/or PCT information in the
dietary assessment for saflufenacil. Tolerance-level residues and/or
100% CT 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 saflufenacil in drinking water. These simulation models
take into account data on the physical, chemical, and fate/transport
characteristics of saflufenacil. 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 Pesticide Root Zone Model Ground
Water (PRZM GW), the estimated drinking water concentrations (EDWCs) of
saflufenacil for acute exposures are estimated to be 133 parts per
billion (ppb) for surface water and 69.2 ppb for ground water.
The EDWCs for chronic exposures for non-cancer assessments are
estimated to be 120 ppb for surface water and 51.5 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 133 ppb was used to assess
the contribution to drinking water. For chronic dietary risk
assessment, the water concentration of value 120 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-occupational, non-dietary
exposure (e.g., for lawn and garden pest control, indoor pest control,
termiticides, and flea and tick control on pets).
Saflufenacil is not registered for any specific use patterns that
would result in residential exposure.
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 saflufenacil to share a common mechanism of
toxicity with any other substances, and saflufenacil does not appear to
produce a toxic metabolite produced by other substances. For the
purposes of this tolerance action, therefore, EPA has assumed that
saflufenacil 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
[[Page 73666]]
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. As discussed in III.A.,
there is evidence of increased pre- and/or postnatal susceptibility in
the developmental toxicity studies in the rat and rabbit and in the 2-
generation reproduction study in the rat. The concern for increased
susceptibility following prenatal or postnatal exposure is low because
clear NOAELs/LOAELs were established for the developmental effects seen
in rats and rabbits as well as for the offspring effects seen in the 2-
generation reproductive toxicity study. Further, the dose-response
relationship for the effects of concern are also well characterized and
being used for assessing risks. The point of departure for risk
assessments would be protective of the developmental and offspring
effects.
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 saflufenacil is complete.
ii. There was no evidence of neurotoxicity or neuropathology in the
acute and subchronic neurotoxicity study. The decrease in motor
activity observed in the acute neurotoxicity study on the day of dosing
at the limit dose (2,000 mg/kg/day) in males is considered a reflection
of a mild and transient general systemic toxicity and not a substance-
specific neurotoxic effect. No neurotoxic effects were seen in the sub-
chronic neurotoxicity study.
iii. The concern for increased susceptibility following prenatal or
postnatal exposure is low because clear NOAELs/LOAELs were established
for the developmental effects seen in rats and rabbits as well as for
the offspring effects seen in the 2-generation reproductive toxicity
study. Further, the dose-response relationship for the effects of
concern are also well characterized and being used for assessing risks.
The POD for risk assessments would be protective of the developmental
and offspring effects.
iv. There are no residual uncertainties identified in the exposure
databases. The dietary food exposure assessments were performed based
on 100% CT and tolerance-level residues. EPA made conservative
(protective) assumptions in the ground and surface water modeling used
to assess exposure to saflufenacil in drinking water. These assessments
will not underestimate the exposure and risks posed by saflufenacil.
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. Using the exposure assumptions discussed in this
unit for acute exposure, the acute dietary exposure from food and water
to saflufenacil will occupy less than 1% of the aPAD for all infants
(<1-year old), the population group receiving the greatest exposure.
2. Chronic risk. Using the exposure assumptions described in this
unit for chronic exposure, EPA has concluded that chronic exposure to
saflufenacil from food and water will utilize 20% of the cPAD for all
infants (<1-year old) the population group receiving the greatest
exposure. There are no residential uses for saflufenacil.
3. Short-term and intermediate-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). Intermediate-term aggregate exposure takes into
account intermediate-term residential exposure plus chronic exposure to
food and water. Since there are no registered or proposed residential
uses for saflufenacil that would result in short or intermediate-term
residential exposures, 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 short-term risk), no further
assessment of short or intermediate-term risk is necessary, and EPA
relies on the chronic dietary risk assessment for evaluating short and
intermediate-term risk for saflufenacil.
4. Aggregate cancer risk for U.S. population. Based on the lack of
evidence of carcinogenicity in two adequate rodent carcinogenicity
studies, saflufenacil is not expected to pose a cancer risk to humans.
5. 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 saflufenacil residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodology (liquid chromatography/mass
spectroscopy/mass spectroscopy (LC/MS/MS) Method D0603/02) is available
to enforce the tolerance expression. 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 a MRL for saflufenacil on pomegranate. Therefore,
harmonization of MRLs and U.S. tolerances is not an issue at this time.
C. Response to Comments
EPA received two comments to the docket, EPA-HQ-OPP-2014-0640;
however, only one of these public submissions was in response to the
Notice of Filing for PP# 4F8305, while the remaining comment pertained
to an unrelated petition in the Federal Register notice. For PP#
4F8305, the commenter stated that they are in support of actions to set
tolerance levels for pesticides on the food we eat and that we are
taking a step in the right direction by making it safer for human
consumption by placing more regulations on pesticide chemicals.
EPA agrees with the commenter and will continue to regulate
pesticides
[[Page 73667]]
under the legal framework provided by the Federal Insecticide,
Fungicide, Rodenticide Act (FIFRA) and Section 408 of the Federal Food,
Drug and Cosmetic Act (FFDCA), which allows EPA to assess the risk of
pesticides and set tolerance levels for those pesticides on food
commodities as deemed necessary to protect human health while still
providing tools for growers so that they can meet the ever-growing food
demands of this country and others.
V. Conclusion
Therefore, tolerances are established for residues of saflufenacil,
(2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1(2H)-
pyrimidinyl]-4-fluoro-N-[[methyl(1-
methylethyl)amino]sulfonyl]benzamide) and its metabolites, in or on
pomegranate at 0.03 ppm.
VI. Statutory and Executive Order Reviews
This action establishes a tolerance 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 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 17, 2015.
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. 180.649, add alphabetically the entry to the table in
paragraph (a)(1) to read as follows:
Sec. 180.649 Saflufenacil; tolerances for residues.
(a) * * * (1) * * *
------------------------------------------------------------------------
Parts per
Commodity million
------------------------------------------------------------------------
* * * * *
Pomegranate............................................ 0.03
* * * * *
------------------------------------------------------------------------
* * * * *
[FR Doc. 2015-29889 Filed 11-24-15; 8:45 am]
BILLING CODE 6560-50-P