Isopyrazam; Pesticide Tolerances, 61592-61597 [2011-25707]
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relationships or distribution of power
and responsibilities established by
Congress in the preemption provisions
of section 408(n)(4) of FFDCA. 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 final rule.
In addition, this final rule does not
impose any enforceable duty or contain
any unfunded mandate as described
under Title II of the Unfunded Mandates
Reform Act of 1995 (UMRA) (Pub. L.
104–4).
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 of 1995
(NTTAA), Public Law 104–113, section
12(d) (15 U.S.C. 272 note).
VII. Congressional Review Act
The Congressional Review Act, 5
U.S.C. 801 et seq., generally provides
that before a rule may take effect, the
agency promulgating the rule must
submit a rule report to each House of
the Congress and to the Comptroller
General of the United States. 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 this final rule in the
Federal Register. This final rule is not
a ‘‘major rule’’ as defined by 5 U.S.C.
804(2).
PART 180—[AMENDED]
1. The authority citation for part 180
continues to read as follows:
■
Authority: 21 U.S.C. 321(q), 346a and 371.
2. Section 180.626 is amended by
revising the table in paragraph (a)(1) to
read as follows:
■
§ 180.626 Prothioconazole; tolerances for
residues.
(a) * * * (1) * * *
Parts per
million
Commodity
Alfalfa, forage ...........................
Alfalfa, hay ................................
Beet, sugar, roots .....................
Corn, sweet kernel plus cob
with husks removed ..............
Grain, aspirated grain fractions
Grain, cereal, forage, fodder
and straw, group 16, except
sorghum, and rice; forage .....
Grain, cereal, forage, fodder
and straw, group 16, except
sorghum, and rice; hay .........
Grain, cereal, forage, fodder
and straw, group 16, except
sorghum, and rice; stover .....
Grain, cereal, forage, fodder
and straw, group 16, except
sorghum, straw .....................
Grain, cereal, group 15, except
sweet corn and sorghum ......
Pea and bean, dried shelled,
except soybean, subgroup
6C ..........................................
Peanut ......................................
Potato .......................................
Rapeseed, seed .......................
Rice, hulls .................................
Soybean, forage .......................
Soybean, hay ............................
Soybean, seed ..........................
*
*
*
*
0.02
0.02
0.25
0.04
11
8.0
7.0
10
5.0
0.35
0.9
0.02
0.02
0.15
0.90
4.5
17
0.15
I. General Information
*
[FR Doc. 2011–25704 Filed 10–4–11; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2009–0906; FRL–8874–6]
Isopyrazam; Pesticide Tolerances
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
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List of Subjects in 40 CFR Part 180
AGENCY:
Dated: September 26, 2011.
Lois Rossi,
Director, Registration Division, Office of
Pesticide Programs.
Therefore, 40 CFR chapter I is
amended as follows:
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Environmental Protection
Agency (EPA).
ACTION: Final rule.
This regulation establishes a
tolerance for residues of isopyrazam in
or on banana. Syngenta Crop Protection,
Inc., requested this tolerance under the
Federal Food, Drug, and Cosmetic Act
(FFDCA).
DATES: This regulation is effective
October 5, 2011. Objections and
SUMMARY:
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requests for hearings must be received
on or before December 5, 2011, 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: EPA has established a
docket for this action under docket
identification (ID) number EPA–HQ–
OPP–2009–0906. All documents in the
docket are listed in the docket index
available at https://www.regulations.gov.
Although listed in the index, some
information is not publicly available,
e.g., Confidential Business Information
(CBI) or other information whose
disclosure is restricted by statute.
Certain other material, such as
copyrighted material, is not placed on
the Internet and will be publicly
available only in hard copy form.
Publicly available docket materials are
available in the electronic docket at
https://www.regulations.gov, or, if only
available in hard copy, at the OPP
Regulatory Public Docket in Rm. S–
4400, One Potomac Yard (South Bldg.),
2777 S. Crystal Dr., Arlington, VA. The
Docket Facility is open from 8:30 a.m.
to 4 p.m., Monday through Friday,
excluding legal holidays. The Docket
Facility telephone number is (703) 305–
5805.
FOR FURTHER INFORMATION CONTACT:
Shaunta Hill, Registration Division
(7505P), Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington,
DC 20460–0001; telephone number:
(703) 347–8961; e-mail address: hill.
shaunta@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. Potentially
affected entities may include, but are
not limited to those engaged in the
following activities:
• Crop production (NAICS code 111).
• Animal production (NAICS code
112).
• Food manufacturing (NAICS code
311).
• Pesticide manufacturing (NAICS
code 32532).
This listing is not intended to be
exhaustive, but rather to provide a guide
for readers regarding entities likely to be
affected by this action. Other types of
entities not listed in this unit could also
be affected. The North American
Industrial Classification System
(NAICS) codes have been provided to
assist you and others in determining
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whether this action might apply to
certain entities. If you have any
questions regarding the applicability of
this action to a particular entity, consult
the person listed under FOR FURTHER
INFORMATION CONTACT.
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.gpoaccess.gov/ecfr.
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C. How can I file an objection or hearing
request?
Under FFDCA section 408(g), 21
U.S.C. 346a, any person may file an
objection to any aspect of this regulation
and may also request a hearing on those
objections. You must file your objection
or request a hearing on this regulation
in accordance with the instructions
provided in 40 CFR part 178. To ensure
proper receipt by EPA, you must
identify docket ID number EPA–HQ–
OPP–2009–0906 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 December 5, 2011. 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 that does not
contain any 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 a copy of
your non-CBI objection or hearing
request, identified by docket ID number
EPA–HQ–OPP–2009–0906, by one of
the following methods:
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the on-line
instructions for submitting comments.
• Mail: Office of Pesticide Programs
(OPP) Regulatory Public Docket (7502P),
Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington,
DC 20460–0001.
• Delivery: OPP Regulatory Public
Docket (7502P), Environmental
Protection Agency, Rm. S–4400, One
Potomac Yard (South Bldg.), 2777 S.
Crystal Dr., Arlington, VA. Deliveries
are only accepted during the Docket
Facility’s normal hours of operation
(8:30 a.m. to 4 p.m., Monday through
Friday, excluding legal holidays).
Special arrangements should be made
for deliveries of boxed information. The
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Docket Facility telephone number is
(703) 305–5805.
II. Summary of Petitioned-For
Tolerance
In the Federal Register of February 4,
2010 (75 FR 5790) (FRL–8807–5), EPA
issued a notice pursuant to section
408(d)(3) of FFDCA, 21 U.S.C.
346a(d)(3), announcing the filing of a
pesticide petition (PP 9E7606) by
Syngenta Crop Protection, Inc., P.O. Box
18300, Greensboro, NC 27419–8300.
The petition requested that 40 CFR part
180 be amended by establishing a
tolerance for residues of the fungicide
isopyrazam, in or on banana at 0.05
ppm parts per million (ppm). That
notice referenced a summary of the
petition prepared by Syngenta Crop
Protection, Inc., the registrant, which is
available in the docket, https://www.
regulations.gov. There were no
comments received in response to the
notice of filing.
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 section 408(b)(2)(D)
of FFDCA, and the factors specified in
section 408(b)(2)(D) of FFDCA, 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 isopyrazam
including exposure resulting from the
tolerances established by this action.
EPA’s assessment of exposures and risks
associated with isopyrazam follows:
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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. Isopyrazam is of
low acute toxicity by the oral, dermal
and inhalation routes, and is not a skin
or eye irritant. The primary target organ
for isopyrazam toxicity is the liver based
on subchronic and chronic oral studies
in the rat, mouse rabbit and dog. The
principal effects observed in these
studies are increased organ weight and
centrilobular hepatocyte hypertrophy.
Liver toxicity is usually accompanied by
reductions in body weight and food
consumption. Isopyrazam does not
cause reproductive toxicity.
Developmental effects (eye
abnormalities) were observed in the
absence of maternal toxicity in two
range finding developmental toxicity
studies in rabbits providing some
evidence of sensitivity/susceptibility
following pre- and/or postnatal
exposure. Developmental studies in rats
produced developmental effects but
only at doses that were also maternally
toxic. Acute and subchronic oral
neurotoxicity studies in rats show no
evidence of neurotoxicity. Effects
characteristic of neurotoxicity (side-toside head wobble, ataxia, reduced
stability) were observed on day 2 in one
subchronic oral study in dogs and at
week 4 in a second subchronic dog
study. These effects were not observed
in the chronic dog study. However, EPA
concluded for the following reasons that
it is unlikely that there was a neurotoxic
basis for these effects. First, the effects
were seen only in a study not
specifically conducted to identify
neurotoxic potential and where detailed
clinical and histopathological analyses
for neurotoxic effects were not
performed whereas isopyrazam showed
no evidence of neurotoxicity in the
available acute and subchronic
neurotoxicity studies. Second,
isopyrazam is not structurally similar to
known neurotoxicants or neurotoxic
classes of chemicals. Finally, its
pesticidal mode of action does not
demonstrate potential for neurotoxicity.
Based on these findings, a
developmental neurotoxicity study for
isopyrazam is not required.
There is no evidence of
immunotoxicity based on a 28-day
dietary immunotoxicity study in rats.
The lowest observed adverse effect level
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(LOAEL) for immunotoxicity was not
identified and the no observed adverse
effect level (NOAEL) for
immunotoxicity is 1,356 milligrams/
kilograms (mg/kg). The study NOAEL
was 127 mg/kg/day, based on transient
body weight loss and high liver weights
at both 608 and 1,356 mg/kg/day. The
toxicology database for isopyrazam does
not show any evidence of treatmentrelated effects on the immune system.
The overall weight of evidence suggests
that this chemical does not directly
target the immune system.
Isopyrazam is classified as ‘‘Likely to
be Carcinogenic to Humans’’ based on
tumors in male and female rats. Specific
information on the studies received and
the nature of the adverse effects caused
by isopyrazam as well as the NOAEL
and the LOAEL from the toxicity studies
can be found at https://www.regulations.
gov in document ‘‘Isopyrazam Human
Health Risk Assessment for the
Establishment of a Tolerance for
isopyrazam (SYN52043) Fungicide in/
on Imported Banana,’’ on pp. 8–12 in
docket ID number EPA–HQ–OPP–2009–
0906.
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 (LOC) 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://www.epa.
gov/pesticides/factsheets/riskassess.
htm.
PODs for incidental oral, dermal and
inhalation exposure are not needed to
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assess risk for the requested tolerance
on bananas because use of isopyrazam
will only lead to dietary exposure, and
have therefore not been selected for this
risk assessment.
The acute POD of 30 mg/kg/day
(NOAEL) was selected based on the
NOAEL from a subchronic toxicity
study in dogs. In that study, clinical
signs of toxicity (side-to-side head
wobble) were observed beginning on
day 2 and continuing throughout the
study in 1 of 4 male dogs at the LOAEL
of 100 mg/kg/day. Transient clinical
signs (side-to-side head wobble, ataxia,
reduced stability) were also observed at
300 mg/kg/day in 3 of 4 male dogs on
days 2 and 3 only. An uncertainty factor
of 100x (10x to account for interspecies
extrapolation and 10x for intraspecies
variation) was applied to the NOAEL to
obtain an aRfD of 0.30 mg/kg/day. This
endpoint is considered to occur
following a single dose and is applicable
to the population of concern (general
population, including infants and
children). It is considered to be a very
conservative endpoint since it is based
on observations in 1/4 dogs and these
acute clinical signs were not reproduced
in a second 90-day study in dogs or in
the chronic dog study. This endpoint is
also protective of the effects seen at the
limit dose (2,000 mg/kg/day) in the
acute neurotoxicity study in rats
(decreased rearing and locomotor
activity) and the developmental effect
(bilateral microphthalmia) in the
developmental rabbit studies (at doses
≥400 mg/kg/day). Therefore, a separate
acute dietary endpoint for females of
reproductive age is not necessary. As
discussed in this unit, EPA has reduced
the Food Quality Protection Act (FQPA)
Safety Factor (SF) to 1x, and thus the
acute Population Adjusted Dose (aPAD)
is equivalent to the acute Reference
Dose (aRfD).
The chronic POD of 5.5 mg/kg/day
was selected based on the NOAEL in a
chronic toxicity/carcinogenicity feeding
study in rats. The LOAEL in that study
was 27.6 mg/kg/day based on decreased
body weight and body weight gain in
females; increased incidences of
hepatocellular hypertrophy, pigment in
centrilobular hepatocytes, eosinophilic
foci of altered hepatocytes, vacuolation
of centrilobular hepatocytes, bile duct
hyperplasia, and bile duct fibrosis in
both sexes; and brown pigment in the
kidney in females. An uncertainty factor
of 100x (10x to account for interspecies
extrapolation and 10x for intraspecies
variation) was applied to the dose to
obtain the chronic reference dose (cRfD)
of 0.055 mg/kg/day. As discussed in this
unit, EPA has reduced the FQPA SF to
1x, and thus, the chronic population
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adjusted dose (cPAD) is equivalent to
the cRfD.
C. Exposure Assessment
1. Dietary exposure from food and
feed uses. In evaluating dietary
exposure to isopyrazam, EPA
considered exposure under the
petitioned-for tolerances. EPA assessed
dietary exposures from isopyrazam 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.
A conservative acute dietary (food
only) exposure analysis was performed
for the general U.S. population and
various population subgroups.
Tolerance level residues and 100
percent crop treated (PCT) assumptions
were used. Dietary Exposure Evaluation
Model (DEEM) default processing
factors were used for processed
commodities, since separate tolerances
are not considered necessary for
processed banana commodities.
ii. Chronic exposure. Conservative
chronic and cancer dietary (food only)
exposure analyses were performed for
the general U.S. population and various
population subgroups. Tolerance level
residues and 100 PCT assumptions were
used. DEEM default and empirical
processing factors were used for banana
processed commodities, since separate
tolerances for these commodities were
not considered necessary.
iii. Cancer. EPA determines whether
quantitative cancer exposure and risk
assessments are appropriate for a fooduse pesticide based on the weight of the
evidence from cancer studies and other
relevant data. If quantitative cancer risk
assessment is appropriate, cancer risk
may be quantified using a linear or
nonlinear approach. If sufficient
information on the carcinogenic mode
of action is available, a threshold or
non-linear approach is used and a
cancer RfD is calculated based on an
earlier noncancer key event. If
carcinogenic mode of action data are not
available, or if the mode of action data
determines a mutagenic mode of action,
a default linear cancer slope factor
approach is utilized. Based on the data
summarized in Unit III.A., EPA has
concluded that isopyrazam should be
classified as ‘‘Likely to be Carcinogenic
to Humans’’.
A linear quantification of
carcinogenic potential was required for
isopyrazam based on rat tumors. A
cancer slope factor or Q1* of 0.00629
(mg/kg/day) ¥1 was calculated based on
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an increase in liver adenomas and/or
carcinomas in female rats. The resulting
cancer aggregate (food) exposure
estimate was less than the level of
concern. Cancer risk was 1.3 × 10¥7 for
the general U.S. population. Cancer risk
was quantified using the same estimates
as discussed in Unit III.C.1.ii.
2. Dietary exposure from drinking
water. An assessment of residues in
drinking water is not needed because
there is no drinking water exposure
associated with the establishment of a
tolerance on imported crops.
3. From non-dietary exposure. The
term ‘‘residential exposure’’ is used in
this document to refer to nonoccupational, non-dietary exposure
(e.g., for lawn and garden pest control,
indoor pest control, termiticides, and
flea and tick control on pets).
Isopyrazam 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 isopyrazam to
share a common mechanism of toxicity
with any other substances, and
isopyrazam does not appear to produce
a toxic metabolite produced by other
substances. For the purposes of this
tolerance action, therefore, EPA has
assumed that isopyrazam 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://www.epa.gov/pesticides/
cumulative.
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 SF. In applying this provision,
EPA either retains the default value of
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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 some evidence for increased
susceptibility following pre- and or
postnatal exposures based on effects
seen in range finding developmental
toxicity studies in rabbits.
Developmental effects (eye
abnormalities) were observed in two
preliminary developmental studies in
Himalayan rabbits in the absence of
maternal toxicity. These effects occurred
at relatively high doses (200–400 mg/kg/
day). There was no evidence of
increased susceptibility in the main
study in New Zealand white rabbits. In
range finding and definitive
developmental toxicity studies in rats,
neither quantitative nor qualitative
evidence of increased susceptibility of
fetuses to in utero exposure to
isopyrazam was observed. There was no
evidence of increased susceptibility in a
2-generation reproduction study
following pre- or postnatal exposure to
isopyrazam. There is no evidence of
neuropathology or abnormalities in the
development of the fetal nervous system
from the available toxicity studies
conducted with isopyrazam. 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
reproduction study and a dose-response
relationship for the effects of concern is
well characterized. The dose used for
the acute dietary risk assessment (30
mg/kg/day), based on effects seen in the
subchronic dog study, is protective of
the developmental and offspring effects
seen in rabbits at 200–400 mg/kg/day.
Based on these considerations, there are
no residual uncertainties for pre-and/or
postnatal susceptibility.
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
isopyrazam is complete and adequate
for assessing increased susceptibility
under FQPA;
ii. There is no indication of increased
susceptibility of fetuses to in utero and/
or postnatal exposure in the
developmental and reproductive
toxicity studies in rats;
There is some evidence for increased
susceptibility following pre- and or
postnatal exposures based on effects
seen in range finding developmental
toxicity studies in rabbits. However,
based on the discussion above, EPA has
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61595
concluded that there are no residual
uncertainties for pre-and/or postnatal
susceptibility.
iii. The dietary risk assessment is
based on parent plus metabolite
residues in/on banana, and will not
underestimate dietary exposure to
isopyrazam. For the acute, chronic and
cancer dietary analyses, tolerance level
residues of parent plus metabolite and
100 PCT assumptions were used for all
treated commodities. There are no
residual uncertainties identified in the
exposure databases.
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 margin
of exposure (MOE) exists.
1. Acute risk. Using the exposure
assumptions discussed in this unit for
acute exposure, the acute dietary
exposure from food to isopyrazam will
occupy less than 1% of the aPAD for all
populations.
2. Chronic risk. Using the exposure
assumptions described in this unit for
chronic exposure, EPA has concluded
that chronic exposure to isopyrazam
from food will utilize less than 1% of
the cPAD for all populations receiving
the greatest exposure. There are no
residential uses for isopyrazam.
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). Isopyrazam is not
registered in the U.S. Short-term risk is
assessed based on short-term residential
exposure plus chronic dietary exposure.
Because there is no short-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 short-term risk),
no further assessment of short-term risk
is necessary, and EPA relies on the
chronic dietary risk assessment for
evaluating short-term risk for
isopyrazam.
4. Intermediate-term risk.
Intermediate-term aggregate exposure
takes into account intermediate-term
residential exposure plus chronic
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exposure to food and water (considered
to be a background exposure level).
Isopyrazam is not registered in the U.S.
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 intermediateterm risk), no further assessment of
intermediate-term risk is necessary, and
EPA relies on the chronic dietary risk
assessment for evaluating intermediateterm risk for isopyrazam.
5. Aggregate cancer risk for U.S.
population. The Cancer Assessment
Review Committee (CARC) classified
isopyrazam as Likely to be Carcinogenic
to Humans. This classification was
based on the presence of thyroid
follicular cell tumors in male rats, and
liver and uterine tumors in female rats
at doses that were adequate to evaluate
the carcinogenic potential of
isopyrazam. No treatment-related
tumors were seen in mice. There is no
mutagenic concern for isopyrazam.
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 isopyrazam
residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodology
(Method GRM006.01B) 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.
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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 U.N.
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
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16:50 Oct 04, 2011
Jkt 226001
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 isopyrazam on banana.
V. Conclusion
Therefore, a tolerance is established
for residues of isopyrazam, in or on
banana at 0.05 ppm.
VI. Statutory and Executive Order
Reviews
This final rule establishes tolerances
under section 408(d) of FFDCA 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 final rule
has been exempted from review under
Executive Order 12866, this final rule 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 final rule 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 section 408(d) of FFDCA, 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 final rule 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 section 408(n)(4) of FFDCA. 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
PO 00000
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Fmt 4700
Sfmt 4700
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 final rule.
In addition, this final rule does not
impose any enforceable duty or contain
any unfunded mandate as described
under Title II of the Unfunded Mandates
Reform Act of 1995 (UMRA) (Pub. L.
104–4).
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 of 1995
(NTTAA), Public Law 104–113, section
12(d) (15 U.S.C. 272 note).
VII. Congressional Review Act
The Congressional Review Act, 5
U.S.C. 801 et seq., generally provides
that before a rule may take effect, the
agency promulgating the rule must
submit a rule report to each House of
the Congress and to the Comptroller
General of the United States. 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 this final rule in the
Federal Register. This final rule 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: September 27, 2011.
Steven Bradbury,
Director, Office of Pesticide Programs.
Therefore, 40 CFR chapter I is
amended as follows:
PART 180—[AMENDED]
1. The authority citation for part 180
continues to read as follows:
■
Authority: 21 U.S.C. 321(q), 346a and 371.
2. Section 180.654 is added to read as
follows:
■
§ 180.654 Isopyrazam; tolerances for
residues.
(a) General. Tolerances are
established for residues of the fungicide
isopyrazam, including its metabolites
and degradates, in or on the commodity
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Federal Register / Vol. 76, No. 193 / Wednesday, October 5, 2011 / Rules and Regulations
listed below. Compliance with the
tolerance levels specified below is to be
determined by measuring only
isopyrazam, 3-difluoromethyl-1-methyl1H-pyrazole-4-carboxylic acid (9isopropyl-1,2,3,4-tetrahydro-1,4methano-naphthalen-5-yl)-amide, in or
on the following commodity.
Commodity
Parts per
million
Banana1 ....................................
0.05
1 There
is no U.S. registration for use of
isopyrazam on banana.
(b) Section 18 emergency exemptions.
[Reserved]
(c) Tolerances with regional
registrations. [Reserved]
(d) Indirect or inadvertent residues.
[Reserved]
[FR Doc. 2011–25707 Filed 10–4–11; 8:45 am]
BILLING CODE 6560–50–P
DEPARTMENT OF TRANSPORTATION
Office of the Secretary
49 CFR Parts 18 and 19
RIN 2105–AD60
Grants and Cooperative Agreements to
State and Local Governments: DOT
Amendments on Regulations on
Uniform Administrative Requirements
for Grants and Agreements With
Institutions of Higher Education,
Hospitals and Other Non-Profit
Organizations
Department of Transportation
(DOT), Office of the Secretary (OST).
ACTION: Final rule.
AGENCY:
The Department of
Transportation (DOT) is adopting a
public proposal on Grants and
Cooperative Agreements to State and
Local Governments; Grants and
Agreements with Institutions of Higher
Education, Hospitals and Other NonProfit Organizations. The rule amends
Department of Transportation
regulations on uniform administrative
requirements for grants and agreements
with Institutions of Higher Education,
Hospitals and other Non-profit
Organizations. Specifically, the DOT is
making requirements for these grants
and agreements consistent with the
uniform administrative requirements for
grants and cooperative agreements to
State and Local governments. In
addition, this rule updates references to
applicable cost principles for grants and
cooperative agreements with State and
Local Governments that appear in
jlentini on DSK4TPTVN1PROD with RULES
SUMMARY:
VerDate Mar<15>2010
16:50 Oct 04, 2011
Jkt 226001
current Department of Transportation
regulations.
DATES: This rule is effective November
4, 2011.
FOR FURTHER INFORMATION CONTACT:
Ellen Shields, Office of the Senior
Procurement Executive, Office of
Administration (M–61), (202) 366–
4268, 1200 New Jersey Avenue, SE.,
Washington, DC 20590–0001. Office
hours are from 7:45 a.m. to 4:15 p.m.
e.t., Monday through Friday, except
Federal holidays.
Background
Regulations governing two types of
U.S. Department of Transportation grant
and cooperative agreements recipients
are found in Parts 18 and 19 of Title 49
of the Code of Federal Regulations:
1. 49 CFR part 18: Uniform
Administrative Requirements for Grants
and Cooperative Agreements to State
and Local Governments.
2. 49 CFR part 19: Uniform
Administrative Requirements for Grants
and Agreements with Institutions of
Higher Education, Hospitals, and Other
Non-Profit Organizations.
Both of these parts contain a
provision that governs allowable costs.
However, 49 CFR 18.22 imposes specific
limitations on the use of grant funds
while 49 CFR 19.27 merely lists cost
principles applicable to each kind of
grant and agreement recipient.
Specifically, under 49 CFR 18.22(a),
grant funds may only be used for:
(1) The allowable costs of the
grantees, subgrantees and cost-type
contractors, including allowable costs in
the form of payments to fixed-price
contractors; and
(2) Reasonable fees or profit to costtype contractors but not any fee or profit
(or other increment above allowable
costs) to the grantee or subgrantee.
Public comments on this matter were
solicited in a Federal Register notice
dated May 2, 2008. Only one comment
was received, from Robert Taylor,
regarding the Office of Management and
Budget (OMB) cost principle circulars as
well as revisions prohibiting the
payment of profit or fee to grantees and
subgrantee covered by 49 CFR part 19.
This comment did not pertain to the
content of the proposed rule. Therefore,
we are adopting the proposed rule
without change.
This rule imposes the same limitation
on the use of funds used for Grants and
Agreements with Institutions of Higher
Education, Hospitals, and Other NonProfit Organizations as there are on the
use of funds used for Uniform
Administrative Requirements for Grants
and Cooperative Agreements to State
and Local Governments.
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Fmt 4700
Sfmt 4700
61597
In addition, this rule updates
references to applicable cost principles
for grants and cooperative agreements
with State and Local Governments that
appear in 49 CFR 18.22(b) and include
comparable updates references in 49
CFR 19.27(b). These updated references
are necessary in light of the
establishment of title 2 of the Code of
Federal Regulations in 2004. Subtitle A
of title 2 of the Code of Federal
Regulations consists of governmentwide guidance from the Office of
Management and Budget (OMB) to
Federal agencies for grants and other
financial assistance and
nonprocurement agreements that
previously had been contained in seven
separate OMB circulars and other OMB
policy documents. Currently, 49 CFR
18.22(b) references three specific OMB
circulars that are now codified in
several Parts in chapter II, subtitle A of
title 2 of the Code of Federal
Regulations. This rule amends 49 CFR
18.22(b) by replacing the citations to
these former OMB circulars with the
appropriate references in title 2 of the
Code of Federal Regulations and would
reflect these same changes in 49 CFR
19.27(b).
The rule also makes minor referencing
revisions to the Office of Management
and Budget (OMB) cost principle
circulars and, consistent with OMB
materials, revises prohibitions on
payment of profit or fee to grantees and
subgrantees covered by 49 CFR part 19.
The revised referencing is needed as the
OMB cost circulars have been published
in Title II of the Code of Federal
Regulations since August 2005.
However, these OMB circulars are only
published as guidance (see 2 CFR
1.105(a)). Also, the OMB circular
number has been retained in the title of
each circular, for example, 2 CFR part
225, Cost Principles for State and Local
Governments (OMB Circular A–87).
The title for the CFR part 19, which
includes the OMB Circular number in
the title, is included in the reference for
all three cost principles. In addition,
this makes the formatting of all titles in
49 CFR sections 18.22 and 18.27
consistent.
Rulemaking Analyses and Notices
Executive Order 12866 (Regulatory
Planning and Review) and DOT
Regulatory Policies and Procedures
The DOT has determined that this
document does not constitute a
significant rule within the meaning of
Executive Order 12866 or within the
meaning of Department of
Transportation regulatory policies and
procedures. DOT anticipates that the
E:\FR\FM\05OCR1.SGM
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Agencies
[Federal Register Volume 76, Number 193 (Wednesday, October 5, 2011)]
[Rules and Regulations]
[Pages 61592-61597]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-25707]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2009-0906; FRL-8874-6]
Isopyrazam; Pesticide Tolerances
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes a tolerance for residues of
isopyrazam in or on banana. Syngenta Crop Protection, Inc., requested
this tolerance under the Federal Food, Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective October 5, 2011. Objections and
requests for hearings must be received on or before December 5, 2011,
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: EPA has established a docket for this action under docket
identification (ID) number EPA-HQ-OPP-2009-0906. All documents in the
docket are listed in the docket index available at https://www.regulations.gov. Although listed in the index, some information is
not publicly available, e.g., Confidential Business Information (CBI)
or other information whose disclosure is restricted by statute. Certain
other material, such as copyrighted material, is not placed on the
Internet and will be publicly available only in hard copy form.
Publicly available docket materials are available in the electronic
docket at https://www.regulations.gov, or, if only available in hard
copy, at the OPP Regulatory Public Docket in Rm. S-4400, One Potomac
Yard (South Bldg.), 2777 S. Crystal Dr., Arlington, VA. The Docket
Facility is open from 8:30 a.m. to 4 p.m., Monday through Friday,
excluding legal holidays. The Docket Facility telephone number is (703)
305-5805.
FOR FURTHER INFORMATION CONTACT: Shaunta Hill, Registration Division
(7505P), Office of Pesticide Programs, Environmental Protection Agency,
1200 Pennsylvania Ave., NW., Washington, DC 20460-0001; telephone
number: (703) 347-8961; e-mail address: hill.shaunta@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.
Potentially affected entities may include, but are not limited to those
engaged in the following activities:
Crop production (NAICS code 111).
Animal production (NAICS code 112).
Food manufacturing (NAICS code 311).
Pesticide manufacturing (NAICS code 32532).
This listing is not intended to be exhaustive, but rather to
provide a guide for readers regarding entities likely to be affected by
this action. Other types of entities not listed in this unit could also
be affected. The North American Industrial Classification System
(NAICS) codes have been provided to assist you and others in
determining
[[Page 61593]]
whether this action might apply to certain entities. If you have any
questions regarding the applicability of this action to a particular
entity, consult the person listed under FOR FURTHER INFORMATION
CONTACT.
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.gpoaccess.gov/ecfr.
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-2009-0906 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
December 5, 2011. 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 that does not contain any 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 a copy of
your non-CBI objection or hearing request, identified by docket ID
number EPA-HQ-OPP-2009-0906, by one of the following methods:
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the on-line instructions for submitting comments.
Mail: Office of Pesticide Programs (OPP) Regulatory Public
Docket (7502P), Environmental Protection Agency, 1200 Pennsylvania
Ave., NW., Washington, DC 20460-0001.
Delivery: OPP Regulatory Public Docket (7502P),
Environmental Protection Agency, Rm. S-4400, One Potomac Yard (South
Bldg.), 2777 S. Crystal Dr., Arlington, VA. Deliveries are only
accepted during the Docket Facility's normal hours of operation (8:30
a.m. to 4 p.m., Monday through Friday, excluding legal holidays).
Special arrangements should be made for deliveries of boxed
information. The Docket Facility telephone number is (703) 305-5805.
II. Summary of Petitioned-For Tolerance
In the Federal Register of February 4, 2010 (75 FR 5790) (FRL-8807-
5), EPA issued a notice pursuant to section 408(d)(3) of FFDCA, 21
U.S.C. 346a(d)(3), announcing the filing of a pesticide petition (PP
9E7606) by Syngenta Crop Protection, Inc., P.O. Box 18300, Greensboro,
NC 27419-8300. The petition requested that 40 CFR part 180 be amended
by establishing a tolerance for residues of the fungicide isopyrazam,
in or on banana at 0.05 ppm parts per million (ppm). That notice
referenced a summary of the petition prepared by Syngenta Crop
Protection, Inc., the registrant, which is available in the docket,
https://www.regulations.gov. There were no comments received in response
to the notice of filing.
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 section 408(b)(2)(D) of FFDCA, and the factors
specified in section 408(b)(2)(D) of FFDCA, 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 isopyrazam including
exposure resulting from the tolerances established by this action.
EPA's assessment of exposures and risks associated with isopyrazam
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. Isopyrazam is of low acute toxicity by the oral, dermal and
inhalation routes, and is not a skin or eye irritant. The primary
target organ for isopyrazam toxicity is the liver based on subchronic
and chronic oral studies in the rat, mouse rabbit and dog. The
principal effects observed in these studies are increased organ weight
and centrilobular hepatocyte hypertrophy. Liver toxicity is usually
accompanied by reductions in body weight and food consumption.
Isopyrazam does not cause reproductive toxicity. Developmental effects
(eye abnormalities) were observed in the absence of maternal toxicity
in two range finding developmental toxicity studies in rabbits
providing some evidence of sensitivity/susceptibility following pre-
and/or postnatal exposure. Developmental studies in rats produced
developmental effects but only at doses that were also maternally
toxic. Acute and subchronic oral neurotoxicity studies in rats show no
evidence of neurotoxicity. Effects characteristic of neurotoxicity
(side-to-side head wobble, ataxia, reduced stability) were observed on
day 2 in one subchronic oral study in dogs and at week 4 in a second
subchronic dog study. These effects were not observed in the chronic
dog study. However, EPA concluded for the following reasons that it is
unlikely that there was a neurotoxic basis for these effects. First,
the effects were seen only in a study not specifically conducted to
identify neurotoxic potential and where detailed clinical and
histopathological analyses for neurotoxic effects were not performed
whereas isopyrazam showed no evidence of neurotoxicity in the available
acute and subchronic neurotoxicity studies. Second, isopyrazam is not
structurally similar to known neurotoxicants or neurotoxic classes of
chemicals. Finally, its pesticidal mode of action does not demonstrate
potential for neurotoxicity. Based on these findings, a developmental
neurotoxicity study for isopyrazam is not required.
There is no evidence of immunotoxicity based on a 28-day dietary
immunotoxicity study in rats. The lowest observed adverse effect level
[[Page 61594]]
(LOAEL) for immunotoxicity was not identified and the no observed
adverse effect level (NOAEL) for immunotoxicity is 1,356 milligrams/
kilograms (mg/kg). The study NOAEL was 127 mg/kg/day, based on
transient body weight loss and high liver weights at both 608 and 1,356
mg/kg/day. The toxicology database for isopyrazam does not show any
evidence of treatment-related effects on the immune system. The overall
weight of evidence suggests that this chemical does not directly target
the immune system.
Isopyrazam is classified as ``Likely to be Carcinogenic to Humans''
based on tumors in male and female rats. Specific information on the
studies received and the nature of the adverse effects caused by
isopyrazam as well as the NOAEL and the LOAEL from the toxicity studies
can be found at https://www.regulations.gov in document ``Isopyrazam
Human Health Risk Assessment for the Establishment of a Tolerance for
isopyrazam (SYN52043) Fungicide in/on Imported Banana,'' on pp. 8-12 in
docket ID number EPA-HQ-OPP-2009-0906.
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 (LOC) 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://www.epa.gov/pesticides/factsheets/riskassess.htm.
PODs for incidental oral, dermal and inhalation exposure are not
needed to assess risk for the requested tolerance on bananas because
use of isopyrazam will only lead to dietary exposure, and have
therefore not been selected for this risk assessment.
The acute POD of 30 mg/kg/day (NOAEL) was selected based on the
NOAEL from a subchronic toxicity study in dogs. In that study, clinical
signs of toxicity (side-to-side head wobble) were observed beginning on
day 2 and continuing throughout the study in 1 of 4 male dogs at the
LOAEL of 100 mg/kg/day. Transient clinical signs (side-to-side head
wobble, ataxia, reduced stability) were also observed at 300 mg/kg/day
in 3 of 4 male dogs on days 2 and 3 only. An uncertainty factor of 100x
(10x to account for interspecies extrapolation and 10x for intraspecies
variation) was applied to the NOAEL to obtain an aRfD of 0.30 mg/kg/
day. This endpoint is considered to occur following a single dose and
is applicable to the population of concern (general population,
including infants and children). It is considered to be a very
conservative endpoint since it is based on observations in 1/4 dogs and
these acute clinical signs were not reproduced in a second 90-day study
in dogs or in the chronic dog study. This endpoint is also protective
of the effects seen at the limit dose (2,000 mg/kg/day) in the acute
neurotoxicity study in rats (decreased rearing and locomotor activity)
and the developmental effect (bilateral microphthalmia) in the
developmental rabbit studies (at doses >=400 mg/kg/day). Therefore, a
separate acute dietary endpoint for females of reproductive age is not
necessary. As discussed in this unit, EPA has reduced the Food Quality
Protection Act (FQPA) Safety Factor (SF) to 1x, and thus the acute
Population Adjusted Dose (aPAD) is equivalent to the acute Reference
Dose (aRfD).
The chronic POD of 5.5 mg/kg/day was selected based on the NOAEL in
a chronic toxicity/carcinogenicity feeding study in rats. The LOAEL in
that study was 27.6 mg/kg/day based on decreased body weight and body
weight gain in females; increased incidences of hepatocellular
hypertrophy, pigment in centrilobular hepatocytes, eosinophilic foci of
altered hepatocytes, vacuolation of centrilobular hepatocytes, bile
duct hyperplasia, and bile duct fibrosis in both sexes; and brown
pigment in the kidney in females. An uncertainty factor of 100x (10x to
account for interspecies extrapolation and 10x for intraspecies
variation) was applied to the dose to obtain the chronic reference dose
(cRfD) of 0.055 mg/kg/day. As discussed in this unit, EPA has reduced
the FQPA SF to 1x, and thus, the chronic population adjusted dose
(cPAD) is equivalent to the cRfD.
C. Exposure Assessment
1. Dietary exposure from food and feed uses. In evaluating dietary
exposure to isopyrazam, EPA considered exposure under the petitioned-
for tolerances. EPA assessed dietary exposures from isopyrazam 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.
A conservative acute dietary (food only) exposure analysis was
performed for the general U.S. population and various population
subgroups. Tolerance level residues and 100 percent crop treated (PCT)
assumptions were used. Dietary Exposure Evaluation Model (DEEM) default
processing factors were used for processed commodities, since separate
tolerances are not considered necessary for processed banana
commodities.
ii. Chronic exposure. Conservative chronic and cancer dietary (food
only) exposure analyses were performed for the general U.S. population
and various population subgroups. Tolerance level residues and 100 PCT
assumptions were used. DEEM default and empirical processing factors
were used for banana processed commodities, since separate tolerances
for these commodities were not considered necessary.
iii. Cancer. EPA determines whether quantitative cancer exposure
and risk assessments are appropriate for a food-use pesticide based on
the weight of the evidence from cancer studies and other relevant data.
If quantitative cancer risk assessment is appropriate, cancer risk may
be quantified using a linear or nonlinear approach. If sufficient
information on the carcinogenic mode of action is available, a
threshold or non-linear approach is used and a cancer RfD is calculated
based on an earlier noncancer key event. If carcinogenic mode of action
data are not available, or if the mode of action data determines a
mutagenic mode of action, a default linear cancer slope factor approach
is utilized. Based on the data summarized in Unit III.A., EPA has
concluded that isopyrazam should be classified as ``Likely to be
Carcinogenic to Humans''.
A linear quantification of carcinogenic potential was required for
isopyrazam based on rat tumors. A cancer slope factor or Q1* of 0.00629
(mg/kg/day) -1 was calculated based on
[[Page 61595]]
an increase in liver adenomas and/or carcinomas in female rats. The
resulting cancer aggregate (food) exposure estimate was less than the
level of concern. Cancer risk was 1.3 x 10-7 for the general
U.S. population. Cancer risk was quantified using the same estimates as
discussed in Unit III.C.1.ii.
2. Dietary exposure from drinking water. An assessment of residues
in drinking water is not needed because there is no drinking water
exposure associated with the establishment of a tolerance on imported
crops.
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). Isopyrazam 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 isopyrazam to share a common mechanism of
toxicity with any other substances, and isopyrazam does not appear to
produce a toxic metabolite produced by other substances. For the
purposes of this tolerance action, therefore, EPA has assumed that
isopyrazam 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://www.epa.gov/pesticides/cumulative.
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 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 some evidence for
increased susceptibility following pre- and or postnatal exposures
based on effects seen in range finding developmental toxicity studies
in rabbits. Developmental effects (eye abnormalities) were observed in
two preliminary developmental studies in Himalayan rabbits in the
absence of maternal toxicity. These effects occurred at relatively high
doses (200-400 mg/kg/day). There was no evidence of increased
susceptibility in the main study in New Zealand white rabbits. In range
finding and definitive developmental toxicity studies in rats, neither
quantitative nor qualitative evidence of increased susceptibility of
fetuses to in utero exposure to isopyrazam was observed. There was no
evidence of increased susceptibility in a 2-generation reproduction
study following pre- or postnatal exposure to isopyrazam. There is no
evidence of neuropathology or abnormalities in the development of the
fetal nervous system from the available toxicity studies conducted with
isopyrazam. 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 reproduction study and a dose-response
relationship for the effects of concern is well characterized. The dose
used for the acute dietary risk assessment (30 mg/kg/day), based on
effects seen in the subchronic dog study, is protective of the
developmental and offspring effects seen in rabbits at 200-400 mg/kg/
day. Based on these considerations, there are no residual uncertainties
for pre-and/or postnatal susceptibility.
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 isopyrazam is complete and adequate
for assessing increased susceptibility under FQPA;
ii. There is no indication of increased susceptibility of fetuses
to in utero and/or postnatal exposure in the developmental and
reproductive toxicity studies in rats;
There is some evidence for increased susceptibility following pre-
and or postnatal exposures based on effects seen in range finding
developmental toxicity studies in rabbits. However, based on the
discussion above, EPA has concluded that there are no residual
uncertainties for pre-and/or postnatal susceptibility.
iii. The dietary risk assessment is based on parent plus metabolite
residues in/on banana, and will not underestimate dietary exposure to
isopyrazam. For the acute, chronic and cancer dietary analyses,
tolerance level residues of parent plus metabolite and 100 PCT
assumptions were used for all treated commodities. There are no
residual uncertainties identified in the exposure databases.
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 margin of exposure (MOE) exists.
1. Acute risk. Using the exposure assumptions discussed in this
unit for acute exposure, the acute dietary exposure from food to
isopyrazam will occupy less than 1% of the aPAD for all populations.
2. Chronic risk. Using the exposure assumptions described in this
unit for chronic exposure, EPA has concluded that chronic exposure to
isopyrazam from food will utilize less than 1% of the cPAD for all
populations receiving the greatest exposure. There are no residential
uses for isopyrazam.
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). Isopyrazam is
not registered in the U.S. Short-term risk is assessed based on short-
term residential exposure plus chronic dietary exposure. Because there
is no short-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 short-term risk), no
further assessment of short-term risk is necessary, and EPA relies on
the chronic dietary risk assessment for evaluating short-term risk for
isopyrazam.
4. Intermediate-term risk. Intermediate-term aggregate exposure
takes into account intermediate-term residential exposure plus chronic
[[Page 61596]]
exposure to food and water (considered to be a background exposure
level). Isopyrazam is not registered in the U.S. 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 isopyrazam.
5. Aggregate cancer risk for U.S. population. The Cancer Assessment
Review Committee (CARC) classified isopyrazam as Likely to be
Carcinogenic to Humans. This classification was based on the presence
of thyroid follicular cell tumors in male rats, and liver and uterine
tumors in female rats at doses that were adequate to evaluate the
carcinogenic potential of isopyrazam. No treatment-related tumors were
seen in mice. There is no mutagenic concern for isopyrazam.
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 isopyrazam residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodology (Method GRM006.01B) 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;
e-mail 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 U.N. 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 isopyrazam on banana.
V. Conclusion
Therefore, a tolerance is established for residues of isopyrazam,
in or on banana at 0.05 ppm.
VI. Statutory and Executive Order Reviews
This final rule establishes tolerances under section 408(d) of
FFDCA 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 final rule has been
exempted from review under Executive Order 12866, this final rule 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 final rule 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 section 408(d) of FFDCA, 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 final rule 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 section 408(n)(4) of FFDCA. 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 final rule. In addition,
this final rule does not impose any enforceable duty or contain any
unfunded mandate as described under Title II of the Unfunded Mandates
Reform Act of 1995 (UMRA) (Pub. L. 104-4).
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 of 1995 (NTTAA), Public Law 104-113, section 12(d) (15 U.S.C. 272
note).
VII. Congressional Review Act
The Congressional Review Act, 5 U.S.C. 801 et seq., generally
provides that before a rule may take effect, the agency promulgating
the rule must submit a rule report to each House of the Congress and to
the Comptroller General of the United States. 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 this final rule in the Federal
Register. This final rule 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: September 27, 2011.
Steven Bradbury,
Director, 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. Section 180.654 is added to read as follows:
Sec. 180.654 Isopyrazam; tolerances for residues.
(a) General. Tolerances are established for residues of the
fungicide isopyrazam, including its metabolites and degradates, in or
on the commodity
[[Page 61597]]
listed below. Compliance with the tolerance levels specified below is
to be determined by measuring only isopyrazam, 3-difluoromethyl-1-
methyl-1H-pyrazole-4-carboxylic acid (9-isopropyl-1,2,3,4-tetrahydro-
1,4-methano-naphthalen-5-yl)-amide, in or on the following commodity.
------------------------------------------------------------------------
Parts per
Commodity million
------------------------------------------------------------------------
Banana\1\.................................................. 0.05
------------------------------------------------------------------------
\1\ There is no U.S. registration for use of isopyrazam on banana.
(b) Section 18 emergency exemptions. [Reserved]
(c) Tolerances with regional registrations. [Reserved]
(d) Indirect or inadvertent residues. [Reserved]
[FR Doc. 2011-25707 Filed 10-4-11; 8:45 am]
BILLING CODE 6560-50-P