Fenazaquin; Pesticide Tolerances, 25953-25958 [2015-10375]
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Federal Register / Vol. 80, No. 87 / Wednesday, May 6, 2015 / Rules and Regulations
other required information to the U.S.
Senate, the U.S. House of
Representatives, and the Comptroller
General of the United States prior to
publication of the rule in the Federal
Register. This action is not a ‘‘major
rule’’ as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
Dated: April 10, 2015.
Robert McNally,
Director, Biopesticides and Pollution
Prevention Division, 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. Add § 180.1330 to subpart D to read
as follows:
■
§ 180.1330 1-Octanol; exemption from the
requirement of a tolerance.
An exemption from the requirement
of a tolerance is established for residues
of 1-octanol in or on root and tuber
vegetables when applied as a plant
growth regulator in accordance with
label directions and good agricultural
practices.
[FR Doc. 2015–10364 Filed 5–5–15; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2006–0075; FRL–9925–97]
Fenazaquin; Pesticide Tolerances
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
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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?
This regulation establishes
tolerances for residues of fenazaquin in
or on almonds and cherries. Gowan
Company requested these tolerances
under the Federal Food, Drug, and
Cosmetic Act (FFDCA).
DATES: This regulation is effective May
6, 2015. Objections and requests for
hearings must be received on or before
July 6, 2015, and must be filed in
accordance with the instructions
provided in 40 CFR part 178 (see also
Unit I.C. of the SUPPLEMENTARY
INFORMATION).
SUMMARY:
The docket for this action,
identified by docket identification (ID)
number EPA–HQ–OPP–2006–0075, is
available at https://www.regulations.gov
or at the Office of Pesticide Programs
Regulatory Public Docket (OPP Docket)
in the Environmental Protection Agency
Docket Center (EPA/DC), West William
Jefferson Clinton Bldg., Rm. 3334, 1301
Constitution Ave. NW., Washington, DC
20460–0001. The Public Reading Room
is open from 8:30 a.m. to 4:30 p.m.,
Monday through Friday, excluding legal
holidays. The telephone number for the
Public Reading Room is (202) 566–1744,
and the telephone number for the OPP
Docket is (703) 305–5805. Please review
the visitor instructions and additional
information about the docket available
at https://www.epa.gov/dockets.
FOR FURTHER INFORMATION CONTACT:
Susan Lewis, Registration Division
(7505P), Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave. NW., Washington,
DC 20460–0001; main telephone
number: (703) 305–7090; email address:
RDFRNotices@epa.gov.
SUPPLEMENTARY INFORMATION:
ADDRESSES:
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
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25953
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–2006–0075 in the subject line on
the first page of your submission. All
objections and requests for a hearing
must be in writing, and must be
received by the Hearing Clerk on or
before July 6, 2015. 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–
2006–0075, 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 April 20,
2011 (76 FR 22067) (FRL–8869–7), 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 1F7825) by Gowan
Company, P.O. Box 5569, Yuma, AZ
85366. The petition requested that 40
CFR 180.632 be amended by
establishing tolerances for residues of
the insecticide fenazaquin, 4-[2-[4-(1,1dimethylethyl)phenyl]
ethoxy]quinazoline, in or on fruit, pome
group at 0.35 parts per million (ppm);
cucurbit group at 0.25 ppm; almond,
hulls at 4.5 ppm; apple, wet pomace at
0.6 ppm; berry fruit group at 0.6 ppm;
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vegetable, fruiting group at 0.25 ppm;
grape at 0.9 ppm; hop at 2.0 ppm; mint
at 6.0 ppm; stone fruit group at 1.5 ppm;
strawberry at 1.5 ppm; tree nut group at
0.02 ppm; alfalfa, forage at 4.5 ppm;
alfalfa, hay at 8.0 ppm; avocado at 0.15
ppm; citrus fruit group at 0.3 ppm;
citrus, oil at 2.5 ppm; cotton, seed
(undelinted) at 0.5 ppm; cotton, gin
byproducts at 12.0 ppm; bean, shelled
dry subgroup at 0.2 ppm; bean, edible
podded subgroup at 0.3 ppm; beans and
pea, succulent subgroup at 0.02 ppm;
corn, field, grain at 0.15 ppm; corn,
field, forage at 9.0 ppm; corn, field,
stover at 30 ppm; corn, field, aspirated
grain fractions at 9.0 ppm; corn, field,
refined oil at 0.6 ppm; corn, sweet at
0.04 ppm; and corn, sweet, forage at 9.0
ppm. That document referenced a
summary of the petition prepared by
Gowan Company, the registrant, which
is available in the docket, https://
www.regulations.gov. There were no
comments received in response to the
notice of filing.
Based upon EPA review of the data
supporting the petition, Gowan
Company, the registrant, revised their
petition by limiting their request for
tolerances to almond and cherry. The
reason for these changes are explained
in Unit IV.C.
III. Aggregate Risk Assessment and
Determination of Safety
Section 408(b)(2)(A)(i) of FFDCA
allows EPA to establish a tolerance (the
legal limit for a pesticide chemical
residue in or on a food) only if EPA
determines that the tolerance is ‘‘safe.’’
Section 408(b)(2)(A)(ii) of FFDCA
defines ‘‘safe’’ to mean that ‘‘there is a
reasonable certainty that no harm will
result from aggregate exposure to the
pesticide chemical residue, including
all anticipated dietary exposures and all
other exposures for which there is
reliable information.’’ This includes
exposure through drinking water and in
residential settings, but does not include
occupational exposure. Section
408(b)(2)(C) of FFDCA requires EPA to
give special consideration to exposure
of infants and children to the pesticide
chemical residue in establishing a
tolerance and to ‘‘ensure that there is a
reasonable certainty that no harm will
result to infants and children from
aggregate exposure to the pesticide
chemical residue. . . .’’
Consistent with FFDCA section
408(b)(2)(D), and the factors specified in
FFDCA section 408(b)(2)(D), EPA has
reviewed the available scientific data
and other relevant information in
support of this action. EPA has
sufficient data to assess the hazards of
and to make a determination on
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aggregate exposure for fenazaquin
including exposure resulting from the
tolerances established by this action.
EPA’s assessment of exposures and risks
associated with fenazaquin 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 most
consistently observed effects of
fenazaquin exposure across species,
genders, and treatment durations were
decreases in body weight, food
consumption, and food efficiency. Other
effects noted were mild dehydration and
certain clinical signs seen at relatively
high dose levels in the acute
neurotoxicity study. These clinical
signs, which included increased foot
splay, decreased motor activity, sluggish
arousal, unusual posture, abnormal gait,
and altered response to auditory stimuli
were seen in the absence of any
neuropathological changes and were not
considered to be related to
neurotoxicity. In a 90-day study in
hamsters, treated animals had an
increased incidence of testicular
hypospermatogenesis and reduced
testicular and prostate weight; however,
these findings were not replicated in the
hamster carcinogenicity study which
suggest the effects were transient or
reversible.
Fenazaquin did not cause any
developmental or reproductive toxicity
at the doses tested in rats and rabbits.
In the rat study, developmental toxicity
was not observed in the presence of
maternal toxicity (i.e. decreases in body
weight gain, food consumption, and
food efficiency). In the rabbit study, no
developmental or maternal toxicity was
seen. In the reproduction study,
systemic toxicity manifested in parental
animals as excessive salivation and
decreased body weight and food intake;
in offspring as decreased body weight
gain; and there was no observed
reproductive toxicity. Therefore, there is
no developmental toxicity or
reproductive susceptibility with respect
to fetal and developing young animals
with in utero and postnatal exposures.
Carcinogenicity was evaluated in the
hamster instead of the mouse because
the hamster was found to be more
sensitive to the effects of fenazaquin
than mice due to slower elimination
kinetics for hamster. In a three-month
feeding study in the mouse, it was
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found that 6–22x higher dose levels
were required to elicit a comparable
effect in mice than in the hamster. The
results of the rat and hamster
carcinogenicity studies demonstrated no
increase in treatment-related tumor
incidence. Therefore, fenazaquin was
classified as ‘‘Not likely to be
Carcinogenic to Humans.’’
The database for fenazaquin shows no
evidence of mutagenicity, genotoxicity,
neurotoxicity, or immunotoxicity.
Fenazaquin did not demonstrate any
systemic toxicity in a 21-day dermal
toxicity study in rabbits up to the limit
dose (1,000 milligram/kilogram/day
(mg/kg/day)).
Fenazaquin has high acute oral
toxicity, low acute toxicity by dermal
and inhalation routes of exposure, is not
a skin irritant, is minimally irritating to
the eye, and is considered to be a
dermal sensitizer.
Specific information on the studies
received and the nature of the adverse
effects caused by fenazaquin 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
Fenazaquin: Human Health Risk
Assessment for Proposed New Uses on
Almonds and Cherries on page 30 in
docket ID number EPA–HQ–OPP–2006–
0075.
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
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EPA uses in risk characterization and a
complete description of the risk
assessment process, see https://
www.epa.gov/pesticides/factsheets/
riskassess.htm.
A summary of the toxicological
endpoints for fenazaquin used for
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human risk assessment is shown in
Table 1 of this unit.
TABLE 1—SUMMARY OF TOXICOLOGICAL DOSES AND ENDPOINTS FOR FENAZAQUIN FOR USE IN HUMAN HEALTH RISK
ASSESSMENT
Point of departure
and
uncertainty/safety
factors
RfD, PAD, LOC for
risk assessment
Study and toxicological effects
NOAEL = 15 mg/kg/
day.
UFA = 10x
UFH = 10x
FQPA SF = 1x
NOAEL = 5 mg/kg/
day.
UFA = 10x
UFH = 10x
FQPA SF = 1x
Acute RfD = 0.15
mg/kg/day.
aPAD = 0.15 mg/kg/
day
[Immunotoxicity—Rat].
LOAEL = 30 mg/kg/day based on clinical signs (general ataxia/
hypoactivity) observed in 1 animal on Day 02 and 3 animals
on Day 03 of dosing.
Chronic RfD = 0.05
mg/kg/day.
cPAD = 0.05 mg/kg/
day
LOC for MOE = 100
Inhalation short-term (1 to 30
days) and Intermediate Term
(1 to 6 months).
NOAEL = 5 mg/kg/
day.
UFA = 10x
UFH = 10x
FQPA SF = 1x
Inhalation (or oral)
study NOAEL = 5
mg/kg/day (inhalation absorption
rate = 100%).
UFA = 10x
UFH = 10x
FQPA SF = 1x
Co-Critical: Subchronic Toxicity—Dog.
LOAEL = 15 mg/kg/day based on decreased body weight and
food consumption/efficiency.
Chronic Toxicity—Dog.
LOAEL = 12 mg/kg/day based on decreased body weight and
food consumption/efficiency.
Co-Critical: Subchronic and Chronic Toxicity—Dog.
Same as Chronic Dietary.
Cancer (Oral, dermal, inhalation).
Classification: ‘‘Not likely to be Carcinogenic to Humans’’ based on the absence of significant tumor increases
in two adequate rodent carcinogenicity studies.
Exposure/scenario
Acute dietary (General population including infants and
children and females 13–50
years of age).
Chronic dietary (All populations)
Incidental oral short-term (1 to
30 days).
LOC for MOE = 100
Co-Critical: Subchronic and Chronic Toxicity—Dog.
Same as Chronic Dietary.
FQPA SF = Food Quality Protection Act Safety Factor. LOAEL = lowest-observed-adverse-effect-level. LOC = level of concern. mg/kg/day =
milligram/kilogram/day. MOE = margin of exposure. 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). UFDB = to account for the absence of data or other data deficiency. 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 fenazaquin, EPA considered
exposure under the petitioned-for
tolerances as well as all existing
fenazaquin tolerances in 40 CFR
180.632. EPA assessed dietary
exposures from fenazaquin 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
fenazaquin. In estimating acute dietary
exposure, EPA used food consumption
information from the United States
Department of Agriculture (USDA)
2003–2008 National Health and
Nutrition Examination Survey, What We
Eat in America (NHANS/WWEIA). As to
residue levels in food, EPA included
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tolerance level residues for all registered
and proposed crops and 100 percent
crop treated (PCT). Default processing
factors were used for all processed
commodities.
ii. Chronic exposure. In conducting
the chronic dietary exposure assessment
EPA used the food consumption data
from the USDA 2003–2008 National
Health and Nutrition Examination
Survey, What We Eat in America
(NHANES/WWEIA). As to residue levels
in food, EPA included tolerance level
residues for all registered and proposed
crops and 100 PCT. Default processing
factors were used for all processed
commodities.
iii. Cancer. Based on the data
summarized in Unit III.A., EPA has
concluded that fenazaquin 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
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not use anticipated residue and/or PCT
information in the dietary assessment
for fenazaquin. Tolerance level residues
and 100 PCT were assumed for all food
commodities.
2. Dietary exposure from drinking
water. The Agency used screening level
water exposure models in the dietary
exposure analysis and risk assessment
for fenazaquin in drinking water. These
simulation models take into account
data on the physical, chemical, and fate/
transport characteristics of fenazaquin.
Further information regarding EPA
drinking water models used in pesticide
exposure assessment can be found at
https://www.epa.gov/oppefed1/models/
water/index.htm.
Based on the Tier II Pesticide Root
Zone Model/Exposure Analysis
Modeling System (PRZM/EXAMS) for
surface water, the estimated drinking
water concentrations (EDWCs) of
fenazaquin for acute and chronic
exposures were estimated to be 5.74
parts per billion (ppb) and 2.09 ppb,
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respectively, and were entered directly
into the dietary exposure model. The
groundwater EDWC from the screening
concentration in ground water (SCI–
GROW) model was estimated to be
0.704 ppb. The modeled estimates were
corrected for the default percent
cropped area of 0.87. The drinking
water assessment was conducted using
the total toxic residue (TTR) approach.
The residues considered in the
assessment include fenazaquin (parent),
Metabolite 1, and Metabolite 29.
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).
Fenazaquin is currently registered for
the following uses that could result in
residential exposures: Ornamental uses.
EPA assessed residential exposure using
the following assumptions: EPA
assessed potential exposures for
residential handlers using several
application methods including
handwand and backpack sprayers to
treat ornamental plants. MOEs were
calculated for the inhalation route of
exposure only since no systemic toxicity
associated with dermal exposure to
fenazaquin was observed. Adult postapplications exposures were not
quantitatively assessed since no dermal
hazard was identified for fenazaquin
and inhalation exposures are typically
negligible in outdoor settings.
Furthermore, the inhalation exposure
assessment performed for residential
handlers is representative of worst case
inhalation exposures and is considered
protective for post-application
inhalation scenarios. Since there is no
residential incidental oral exposure
expected for children 1<2 years old on
ornamental plants, a post-application
exposure assessment was not conducted
and the aggregate assessment for
children will only include exposure
from food and water.
Further information regarding EPA
standard assumptions and generic
inputs for residential exposures may be
found at https://www.epa.gov/pesticides/
trac/science/trac6a05.pdf.
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.
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EPA has not found fenazaquin to
share a common mechanism of toxicity
with any other substances, and
fenazaquin does not appear to produce
a toxic metabolite produced by other
substances. For the purposes of this
tolerance action, therefore, EPA has
assumed that fenazaquin 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
Food Quality Protection Act Safety
Factor (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.
Susceptibility/sensitivity in the
developing animals was evaluated in
developmental toxicity studies in rats
and rabbits as well as a reproduction
and fertility study in rats. The data
showed no evidence of sensitivity/
susceptibility in the developing or
young animal. Clear NOAELs and
LOAELs are available for all the parental
and offspring effects. Therefore, there
are no residual prenatal or postnatal
concerns.
3. Conclusion. EPA has determined
that reliable data show the safety of
infants and children would be
adequately protected if the FQPA SF
were reduced to 1X. That decision is
based on the following findings:
i. The toxicity database for fenazaquin
is considered complete and sufficient
for assessing susceptibility to infants
and children.
ii. There is no indication that
fenazaquin is a neurotoxic chemical and
there is no need for a developmental
neurotoxicity study or additional UFs to
account for neurotoxicity.
iii. There is no evidence that
fenazaquin results in increased
susceptibility in in utero rats or rabbits
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in the prenatal developmental studies or
in young rats in the 2-generation
reproduction study.
iv. There are no residual uncertainties
identified in the exposure databases.
The dietary food exposure assessments
were performed based on 100 PCT and
tolerance-level residues. EPA made
conservative (protective) assumptions in
the ground and surface water modeling
used to assess exposure to fenazaquin in
drinking water. EPA also made
conservative assumptions in the nondietary residential exposures estimates
including maximum application rates
and standard values for unit exposures,
amount handled. These assessments
will not underestimate the exposure and
risks posed by fenazaquin.
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
fenazaquin will occupy 10% of the
aPAD for children 1–2 years 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 fenazaquin
from food and water will utilize 10% of
the cPAD for children 1–2 years old the
population group receiving the greatest
exposure. Based on the explanation in
Unit III.C.3., regarding residential use
patterns, chronic residential exposure to
residues of fenazaquin is not expected.
3. Short-term risk. Short-term
aggregate exposure takes into account
short-term residential exposure plus
chronic exposure to food and water
(considered to be a background
exposure level). Fenazaquin is currently
registered for uses that could result in
short-term residential exposure, and the
Agency has determined that it is
appropriate to aggregate chronic
exposure through food and water with
short-term residential exposures to
fenazaquin.
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Using the exposure assumptions
described in this unit for short-term
exposures, EPA has concluded the
combined short-term food, water, and
residential exposures result in aggregate
MOEs of 5,200 for adults. Because EPA’s
level of concern for fenazaquin is a MOE
of 100 or below, the MOE is not of
concern. Since there is no residential
exposure expected for children, there is
no potential that a short-term aggregate
risk for children could be higher than
the dietary (food and drinking water)
risk.
4. Intermediate-term risk.
Intermediate-term aggregate exposure
takes into account intermediate-term
residential exposure plus chronic
exposure to food and water (considered
to be a background exposure level).
An intermediate-term adverse effect
was identified; however, fenazaquin is
not registered for any use patterns that
would result in intermediate-term
residential exposure.
Intermediate-term risk is assessed
based on intermediate-term residential
exposure plus chronic dietary exposure.
Because there is no intermediate-term
residential exposure and chronic dietary
exposure has already been assessed
under the appropriately protective
cPAD (which is at least as protective as
the POD used to assess 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 fenazaquin.
5. Aggregate cancer risk for U.S.
population. Based on the lack of
evidence of carcinogenicity in two
adequate rodent carcinogenicity studies,
fenazaquin is not expected to pose a
cancer risk to humans.
6. Determination of safety. Based on
these risk assessments, EPA concludes
that there is a reasonable certainty that
no harm will result to the general
population, or to infants and children
from aggregate exposure to fenazaquin
residues.
IV. Other Considerations
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A. Analytical Enforcement Methodology
Adequate enforcement methodology
(high performance liquid
chromatography and tandem mass
spectrometry (HPLC–MS/MS)) 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
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 fenazaquin.
C. Revisions to Petitioned-For
Tolerances
EPA’s review of the data supporting
the petition, showed that there was not
sufficient data to support some of the
tolerances originally proposed by the
registrant. Gowan Company, the
registrant, revised their petition by
limiting their request for tolerances to
almond and cherry, which are
supported by the available data. The
Organization of Economic Cooperation
and Development (OECD) tolerance
derivation procedures indicates the
need for the following changes in the
proposed tolerances: Cherries from 1.5
ppm to 2.0 ppm and almond hull from
0.6 ppm to 4.0 ppm. The Agency is also
revising the tolerance expression to
clarify that (1) as provided in FFDCA
section 408(a)(3), the tolerance covers
metabolites and degradates of
fenazaquin not specifically mentioned
and (2) compliance with the specified
tolerance levels is to be determined by
measuring only the specific compounds
mentioned in the tolerance expression.
V. Conclusion
Therefore, tolerances are established
for residues of fenazaquin,
4-[2-[4-(1,1-dimethylethyl)
phenyl]ethoxy]quinazoline, in or on
almond at 0.02 ppm, almond hulls at 4.0
ppm, and cherry at 2.0 ppm.
VI. Statutory and Executive Order
Reviews
This action establishes tolerances
under FFDCA section 408(d) in
response to a petition submitted to the
Agency. The Office of Management and
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25957
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
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06MYR1
25958
Federal Register / Vol. 80, No. 87 / Wednesday, May 6, 2015 / Rules and Regulations
12(d) of the National Technology
Transfer and Advancement Act
(NTTAA) (15 U.S.C. 272 note).
DEPARTMENT OF HEALTH AND
HUMAN SERVICES
Centers for Medicare & Medicaid
Services
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
tkelley on DSK3SPTVN1PROD with RULES
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
42 CFR Part 423
[CMS–6107–IFC]
RIN 0938–AS60
Medicare Program; Changes to the
Requirements for Part D Prescribers
Centers for Medicare &
Medicaid Services (CMS), HHS.
ACTION: Interim final rule with comment
period.
AGENCY:
This interim final rule with
comment period revises requirements
related to beneficiary access to covered
Part D drugs. Under these revised
requirements, pharmacy claims and
beneficiary requests for reimbursement
Dated: April 27, 2015.
for Medicare Part D prescriptions,
Susan Lewis,
written by prescribers other than
Director, Registration Division, Office of
physicians and eligible professionals
Pesticide Programs.
who are permitted by state or other
Therefore, 40 CFR chapter I is
applicable law to prescribe medications,
amended as follows:
will not be rejected at the point of sale
or denied by the plan if all other
PART 180—[AMENDED]
requirements are met. In addition, a
plan sponsor will not reject a claim or
■ 1. The authority citation for part 180
deny a beneficiary request for
continues to read as follows:
reimbursement for a drug when
prescribed by a prescriber who does not
Authority: 21 U.S.C. 321(q), 346a and 371.
meet the applicable enrollment or optout requirement without first providing
■ 2. In § 180.632, the section heading
provisional coverage of the drug and
and paragraph (a) are revised to read as
individualized written notice to the
follows:
beneficiary. This interim final rule with
§ 180.632 Fenazaquin; Tolerances for
comment period also revises certain
residues.
terminology to be consistent with
existing policy and to improve clarity.
(a) General. Tolerances are
DATES:
established for residues of the
Effective date: These regulations are
insecticide fenazaquin, including its
metabolites and degradates, in or on the effective on June 1, 2015.
Applicability date: The provisions at
commodities in the table below.
§ 423.120(c)(6) are applicable January 1,
Compliance with the tolerance levels
2016.
specified below is to be determined by
Comment date: To be assured
measuring only fenazaquin, or 4-[2-[4consideration, comments must be
(1,1-dimethylethyl)phenyl]
received at one of the addresses
ethoxy]quinazoline.
provided below, no later than 5 p.m. on
July 6, 2015.
Parts per
Commodity
million
ADDRESSES: In commenting, please refer
to file code CMS–6107–IFC. Because of
Almond ......................................
0.02 staff and resource limitations, we cannot
Almond, hulls ............................
4.0
accept comments by facsimile (FAX)
Apple .........................................
0.2
transmission.
Cherry .......................................
2.0
You may submit comments in one of
Citrus Oil ...................................
10
four ways (please choose only one of the
Fruit, Citrus, Group 10 except
ways listed)
Grape fruit .............................
0.5
1. Electronically. You may submit
Pear ..........................................
0.2
electronic comments on this regulation
to https://www.regulations.gov. Follow
*
*
*
*
*
the ‘‘Submit a comment’’ instructions.
[FR Doc. 2015–10375 Filed 5–5–15; 8:45 am]
2. By regular mail. You may mail
BILLING CODE 6560–50–P
written comments to the following
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SUMMARY:
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address ONLY: Centers for Medicare &
Medicaid Services, Department of
Health and Human Services, Attention:
CMS–6107–IFC, P.O. Box 8013,
Baltimore, MD 21244–8013.
Please allow sufficient time for mailed
comments to be received before the
close of the comment period.
3. By express or overnight mail. You
may send written comments to the
following address ONLY: Centers for
Medicare & Medicaid Services,
Department of Health and Human
Services, Attention: CMS–6107–IFC,
Mail Stop C4–26–05, 7500 Security
Boulevard, Baltimore, MD 21244–1850.
4. By hand or courier. Alternatively,
you may deliver (by hand or courier)
your written comments ONLY to the
following addresses prior to the close of
the comment period: a. For delivery in
Washington, DC—Centers for Medicare
& Medicaid Services, Department of
Health and Human Services, Room 445–
G, Hubert H. Humphrey Building, 200
Independence Avenue SW.,
Washington, DC 20201.
(Because access to the interior of the
Hubert H. Humphrey Building is not
readily available to persons without
Federal government identification,
commenters are encouraged to leave
their comments in the CMS drop slots
located in the main lobby of the
building. A stamp-in clock is available
for persons wishing to retain a proof of
filing by stamping in and retaining an
extra copy of the comments being filed.)
b. For delivery in Baltimore, MD—
Centers for Medicare & Medicaid
Services, Department of Health and
Human Services, 7500 Security
Boulevard, Baltimore, MD 21244–1850.
If you intend to deliver your
comments to the Baltimore address, call
telephone number (410) 786–9994 in
advance to schedule your arrival with
one of our staff members.
Comments erroneously mailed to the
addresses indicated as appropriate for
hand or courier delivery may be delayed
and received after the comment period.
For information on viewing public
comments, see the beginning of the
SUPPLEMENTARY INFORMATION section.
FOR FURTHER INFORMATION CONTACT:
Frank Whelan, (410) 786–1302 for
enrollment issues.
Lisa Thorpe, (410) 786–3048, for
provisional coverage, notice, and all
other issues.
SUPPLEMENTARY INFORMATION:
Inspection of Public Comments: All
comments received before the close of
the comment period are available for
viewing by the public, including any
personally identifiable or confidential
business information that is included in
E:\FR\FM\06MYR1.SGM
06MYR1
Agencies
[Federal Register Volume 80, Number 87 (Wednesday, May 6, 2015)]
[Rules and Regulations]
[Pages 25953-25958]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-10375]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2006-0075; FRL-9925-97]
Fenazaquin; Pesticide Tolerances
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes tolerances for residues of
fenazaquin in or on almonds and cherries. Gowan Company requested these
tolerances under the Federal Food, Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective May 6, 2015. Objections and
requests for hearings must be received on or before July 6, 2015, 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-2006-0075, is available at https://www.regulations.gov or at the Office of Pesticide Programs Regulatory
Public Docket (OPP Docket) in the Environmental Protection Agency
Docket Center (EPA/DC), West William Jefferson Clinton Bldg., Rm. 3334,
1301 Constitution Ave. NW., Washington, DC 20460-0001. The Public
Reading Room is open from 8:30 a.m. to 4:30 p.m., Monday through
Friday, excluding legal holidays. The telephone number for the Public
Reading Room is (202) 566-1744, and the telephone number for the OPP
Docket is (703) 305-5805. Please review the visitor instructions and
additional information about the docket available at https://www.epa.gov/dockets.
FOR FURTHER INFORMATION CONTACT: Susan Lewis, Registration Division
(7505P), Office of Pesticide Programs, Environmental Protection Agency,
1200 Pennsylvania Ave. NW., Washington, DC 20460-0001; main telephone
number: (703) 305-7090; email address: RDFRNotices@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
A. Does this action apply to me?
You may be potentially affected by this action if you are an
agricultural producer, food manufacturer, or pesticide manufacturer.
The following list of North American Industrial Classification System
(NAICS) codes is not intended to be exhaustive, but rather provides a
guide to help readers determine whether this document applies to them.
Potentially affected entities may include:
Crop production (NAICS code 111).
Animal production (NAICS code 112).
Food manufacturing (NAICS code 311).
Pesticide manufacturing (NAICS code 32532).
B. How can I get electronic access to other related information?
You may access a frequently updated electronic version of EPA's
tolerance regulations at 40 CFR part 180 through the Government
Publishing 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-2006-0075 in the subject line on the first
page of your submission. All objections and requests for a hearing must
be in writing, and must be received by the Hearing Clerk on or before
July 6, 2015. 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-2006-0075, 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 April 20, 2011 (76 FR 22067) (FRL-8869-
7), 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
1F7825) by Gowan Company, P.O. Box 5569, Yuma, AZ 85366. The petition
requested that 40 CFR 180.632 be amended by establishing tolerances for
residues of the insecticide fenazaquin, 4-[2-[4-(1,1-
dimethylethyl)phenyl]ethoxy]quinazoline, in or on fruit, pome group at
0.35 parts per million (ppm); cucurbit group at 0.25 ppm; almond, hulls
at 4.5 ppm; apple, wet pomace at 0.6 ppm; berry fruit group at 0.6 ppm;
[[Page 25954]]
vegetable, fruiting group at 0.25 ppm; grape at 0.9 ppm; hop at 2.0
ppm; mint at 6.0 ppm; stone fruit group at 1.5 ppm; strawberry at 1.5
ppm; tree nut group at 0.02 ppm; alfalfa, forage at 4.5 ppm; alfalfa,
hay at 8.0 ppm; avocado at 0.15 ppm; citrus fruit group at 0.3 ppm;
citrus, oil at 2.5 ppm; cotton, seed (undelinted) at 0.5 ppm; cotton,
gin byproducts at 12.0 ppm; bean, shelled dry subgroup at 0.2 ppm;
bean, edible podded subgroup at 0.3 ppm; beans and pea, succulent
subgroup at 0.02 ppm; corn, field, grain at 0.15 ppm; corn, field,
forage at 9.0 ppm; corn, field, stover at 30 ppm; corn, field,
aspirated grain fractions at 9.0 ppm; corn, field, refined oil at 0.6
ppm; corn, sweet at 0.04 ppm; and corn, sweet, forage at 9.0 ppm. That
document referenced a summary of the petition prepared by Gowan
Company, the registrant, which is available in the docket, https://www.regulations.gov. There were no comments received in response to the
notice of filing.
Based upon EPA review of the data supporting the petition, Gowan
Company, the registrant, revised their petition by limiting their
request for tolerances to almond and cherry. The reason for these
changes are explained in Unit IV.C.
III. Aggregate Risk Assessment and Determination of Safety
Section 408(b)(2)(A)(i) of FFDCA allows EPA to establish a
tolerance (the legal limit for a pesticide chemical residue in or on a
food) only if EPA determines that the tolerance is ``safe.'' Section
408(b)(2)(A)(ii) of FFDCA defines ``safe'' to mean that ``there is a
reasonable certainty that no harm will result from aggregate exposure
to the pesticide chemical residue, including all anticipated dietary
exposures and all other exposures for which there is reliable
information.'' This includes exposure through drinking water and in
residential settings, but does not include occupational exposure.
Section 408(b)(2)(C) of FFDCA requires EPA to give special
consideration to exposure of infants and children to the pesticide
chemical residue in establishing a tolerance and to ``ensure that there
is a reasonable certainty that no harm will result to infants and
children from aggregate exposure to the pesticide chemical residue. . .
.''
Consistent with FFDCA section 408(b)(2)(D), and the factors
specified in FFDCA section 408(b)(2)(D), EPA has reviewed the available
scientific data and other relevant information in support of this
action. EPA has sufficient data to assess the hazards of and to make a
determination on aggregate exposure for fenazaquin including exposure
resulting from the tolerances established by this action. EPA's
assessment of exposures and risks associated with fenazaquin 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 most consistently observed effects of fenazaquin exposure
across species, genders, and treatment durations were decreases in body
weight, food consumption, and food efficiency. Other effects noted were
mild dehydration and certain clinical signs seen at relatively high
dose levels in the acute neurotoxicity study. These clinical signs,
which included increased foot splay, decreased motor activity, sluggish
arousal, unusual posture, abnormal gait, and altered response to
auditory stimuli were seen in the absence of any neuropathological
changes and were not considered to be related to neurotoxicity. In a
90-day study in hamsters, treated animals had an increased incidence of
testicular hypospermatogenesis and reduced testicular and prostate
weight; however, these findings were not replicated in the hamster
carcinogenicity study which suggest the effects were transient or
reversible.
Fenazaquin did not cause any developmental or reproductive toxicity
at the doses tested in rats and rabbits. In the rat study,
developmental toxicity was not observed in the presence of maternal
toxicity (i.e. decreases in body weight gain, food consumption, and
food efficiency). In the rabbit study, no developmental or maternal
toxicity was seen. In the reproduction study, systemic toxicity
manifested in parental animals as excessive salivation and decreased
body weight and food intake; in offspring as decreased body weight
gain; and there was no observed reproductive toxicity. Therefore, there
is no developmental toxicity or reproductive susceptibility with
respect to fetal and developing young animals with in utero and
postnatal exposures.
Carcinogenicity was evaluated in the hamster instead of the mouse
because the hamster was found to be more sensitive to the effects of
fenazaquin than mice due to slower elimination kinetics for hamster. In
a three-month feeding study in the mouse, it was found that 6-22x
higher dose levels were required to elicit a comparable effect in mice
than in the hamster. The results of the rat and hamster carcinogenicity
studies demonstrated no increase in treatment-related tumor incidence.
Therefore, fenazaquin was classified as ``Not likely to be Carcinogenic
to Humans.''
The database for fenazaquin shows no evidence of mutagenicity,
genotoxicity, neurotoxicity, or immunotoxicity. Fenazaquin did not
demonstrate any systemic toxicity in a 21-day dermal toxicity study in
rabbits up to the limit dose (1,000 milligram/kilogram/day (mg/kg/
day)).
Fenazaquin has high acute oral toxicity, low acute toxicity by
dermal and inhalation routes of exposure, is not a skin irritant, is
minimally irritating to the eye, and is considered to be a dermal
sensitizer.
Specific information on the studies received and the nature of the
adverse effects caused by fenazaquin 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 Fenazaquin: Human Health Risk
Assessment for Proposed New Uses on Almonds and Cherries on page 30 in
docket ID number EPA-HQ-OPP-2006-0075.
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
[[Page 25955]]
EPA uses in risk characterization and a complete description of the
risk assessment process, see https://www.epa.gov/pesticides/factsheets/riskassess.htm.
A summary of the toxicological endpoints for fenazaquin used for
human risk assessment is shown in Table 1 of this unit.
Table 1--Summary of Toxicological Doses and Endpoints for Fenazaquin for Use in Human Health Risk Assessment
----------------------------------------------------------------------------------------------------------------
Point of departure
Exposure/scenario and uncertainty/ RfD, PAD, LOC for Study and toxicological effects
safety factors risk assessment
----------------------------------------------------------------------------------------------------------------
Acute dietary (General population NOAEL = 15 mg/kg/day Acute RfD = 0.15 mg/ [Immunotoxicity--Rat].
including infants and children UFA = 10x........... kg/day. LOAEL = 30 mg/kg/day based on
and females 13-50 years of age). UFH = 10x........... aPAD = 0.15 mg/kg/ clinical signs (general ataxia/
FQPA SF = 1x........ day. hypoactivity) observed in 1
animal on Day 02 and 3 animals on
Day 03 of dosing.
Chronic dietary (All populations) NOAEL = 5 mg/kg/day. Chronic RfD = 0.05 Co-Critical: Subchronic Toxicity--
UFA = 10x........... mg/kg/day. Dog.
UFH = 10x........... cPAD = 0.05 mg/kg/ LOAEL = 15 mg/kg/day based on
FQPA SF = 1x........ day. decreased body weight and food
consumption/efficiency.
Chronic Toxicity--Dog.
LOAEL = 12 mg/kg/day based on
decreased body weight and food
consumption/efficiency.
Incidental oral short-term (1 to NOAEL = 5 mg/kg/day. LOC for MOE = 100.. Co-Critical: Subchronic and
30 days). UFA = 10x........... Chronic Toxicity--Dog.
UFH = 10x........... Same as Chronic Dietary.
FQPA SF = 1x........
Inhalation short-term (1 to 30 Inhalation (or oral) LOC for MOE = 100.. Co-Critical: Subchronic and
days) and Intermediate Term (1 study NOAEL = 5 mg/ Chronic Toxicity--Dog.
to 6 months). kg/day (inhalation Same as Chronic Dietary.
absorption rate =
100%).
UFA = 10x...........
UFH = 10x...........
FQPA SF = 1x........
----------------------------------------------------------------------------------------------------------------
Cancer (Oral, dermal, inhalation) Classification: ``Not likely to be Carcinogenic to Humans'' based on the
absence of significant tumor increases in two adequate rodent
carcinogenicity studies.
----------------------------------------------------------------------------------------------------------------
FQPA SF = Food Quality Protection Act Safety Factor. LOAEL = lowest-observed-adverse-effect-level. LOC = level
of concern. mg/kg/day = milligram/kilogram/day. MOE = margin of exposure. 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). UFDB = to account for the absence of data or other
data deficiency. 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 fenazaquin, EPA considered exposure under the petitioned-
for tolerances as well as all existing fenazaquin tolerances in 40 CFR
180.632. EPA assessed dietary exposures from fenazaquin 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 fenazaquin. In estimating acute
dietary exposure, EPA used food consumption information from the United
States Department of Agriculture (USDA) 2003-2008 National Health and
Nutrition Examination Survey, What We Eat in America (NHANS/WWEIA). As
to residue levels in food, EPA included tolerance level residues for
all registered and proposed crops and 100 percent crop treated (PCT).
Default processing factors were used for all processed commodities.
ii. Chronic exposure. In conducting the chronic dietary exposure
assessment EPA used the food consumption data from the USDA 2003-2008
National Health and Nutrition Examination Survey, What We Eat in
America (NHANES/WWEIA). As to residue levels in food, EPA included
tolerance level residues for all registered and proposed crops and 100
PCT. Default processing factors were used for all processed
commodities.
iii. Cancer. Based on the data summarized in Unit III.A., EPA has
concluded that fenazaquin 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 fenazaquin. Tolerance level residues and 100 PCT
were assumed for all food commodities.
2. Dietary exposure from drinking water. The Agency used screening
level water exposure models in the dietary exposure analysis and risk
assessment for fenazaquin in drinking water. These simulation models
take into account data on the physical, chemical, and fate/transport
characteristics of fenazaquin. Further information regarding EPA
drinking water models used in pesticide exposure assessment can be
found at https://www.epa.gov/oppefed1/models/water/index.htm.
Based on the Tier II Pesticide Root Zone Model/Exposure Analysis
Modeling System (PRZM/EXAMS) for surface water, the estimated drinking
water concentrations (EDWCs) of fenazaquin for acute and chronic
exposures were estimated to be 5.74 parts per billion (ppb) and 2.09
ppb,
[[Page 25956]]
respectively, and were entered directly into the dietary exposure
model. The groundwater EDWC from the screening concentration in ground
water (SCI-GROW) model was estimated to be 0.704 ppb. The modeled
estimates were corrected for the default percent cropped area of 0.87.
The drinking water assessment was conducted using the total toxic
residue (TTR) approach. The residues considered in the assessment
include fenazaquin (parent), Metabolite 1, and Metabolite 29.
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).
Fenazaquin is currently registered for the following uses that
could result in residential exposures: Ornamental uses. EPA assessed
residential exposure using the following assumptions: EPA assessed
potential exposures for residential handlers using several application
methods including handwand and backpack sprayers to treat ornamental
plants. MOEs were calculated for the inhalation route of exposure only
since no systemic toxicity associated with dermal exposure to
fenazaquin was observed. Adult post-applications exposures were not
quantitatively assessed since no dermal hazard was identified for
fenazaquin and inhalation exposures are typically negligible in outdoor
settings. Furthermore, the inhalation exposure assessment performed for
residential handlers is representative of worst case inhalation
exposures and is considered protective for post-application inhalation
scenarios. Since there is no residential incidental oral exposure
expected for children 1<2 years old on ornamental plants, a post-
application exposure assessment was not conducted and the aggregate
assessment for children will only include exposure from food and water.
Further information regarding EPA standard assumptions and generic
inputs for residential exposures may be found at https://www.epa.gov/pesticides/trac/science/trac6a05.pdf.
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 fenazaquin to share a common mechanism of
toxicity with any other substances, and fenazaquin does not appear to
produce a toxic metabolite produced by other substances. For the
purposes of this tolerance action, therefore, EPA has assumed that
fenazaquin 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 Food Quality
Protection Act Safety Factor (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. Susceptibility/sensitivity
in the developing animals was evaluated in developmental toxicity
studies in rats and rabbits as well as a reproduction and fertility
study in rats. The data showed no evidence of sensitivity/
susceptibility in the developing or young animal. Clear NOAELs and
LOAELs are available for all the parental and offspring effects.
Therefore, there are no residual prenatal or postnatal concerns.
3. Conclusion. EPA has determined that reliable data show the
safety of infants and children would be adequately protected if the
FQPA SF were reduced to 1X. That decision is based on the following
findings:
i. The toxicity database for fenazaquin is considered complete and
sufficient for assessing susceptibility to infants and children.
ii. There is no indication that fenazaquin is a neurotoxic chemical
and there is no need for a developmental neurotoxicity study or
additional UFs to account for neurotoxicity.
iii. There is no evidence that fenazaquin results in increased
susceptibility in in utero rats or rabbits in the prenatal
developmental studies or in young rats in the 2-generation reproduction
study.
iv. There are no residual uncertainties identified in the exposure
databases. The dietary food exposure assessments were performed based
on 100 PCT and tolerance-level residues. EPA made conservative
(protective) assumptions in the ground and surface water modeling used
to assess exposure to fenazaquin in drinking water. EPA also made
conservative assumptions in the non-dietary residential exposures
estimates including maximum application rates and standard values for
unit exposures, amount handled. These assessments will not
underestimate the exposure and risks posed by fenazaquin.
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 fenazaquin will occupy 10% of the aPAD for children 1-2 years 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
fenazaquin from food and water will utilize 10% of the cPAD for
children 1-2 years old the population group receiving the greatest
exposure. Based on the explanation in Unit III.C.3., regarding
residential use patterns, chronic residential exposure to residues of
fenazaquin is not expected.
3. Short-term risk. Short-term aggregate exposure takes into
account short-term residential exposure plus chronic exposure to food
and water (considered to be a background exposure level). Fenazaquin is
currently registered for uses that could result in short-term
residential exposure, and the Agency has determined that it is
appropriate to aggregate chronic exposure through food and water with
short-term residential exposures to fenazaquin.
[[Page 25957]]
Using the exposure assumptions described in this unit for short-
term exposures, EPA has concluded the combined short-term food, water,
and residential exposures result in aggregate MOEs of 5,200 for adults.
Because EPA's level of concern for fenazaquin is a MOE of 100 or below,
the MOE is not of concern. Since there is no residential exposure
expected for children, there is no potential that a short-term
aggregate risk for children could be higher than the dietary (food and
drinking water) risk.
4. Intermediate-term risk. Intermediate-term aggregate exposure
takes into account intermediate-term residential exposure plus chronic
exposure to food and water (considered to be a background exposure
level).
An intermediate-term adverse effect was identified; however,
fenazaquin is not registered for any use patterns that would result in
intermediate-term residential exposure.
Intermediate-term risk is assessed based on intermediate-term
residential exposure plus chronic dietary exposure. Because there is no
intermediate-term residential exposure and chronic dietary exposure has
already been assessed under the appropriately protective cPAD (which is
at least as protective as the POD used to assess intermediate-term
risk), no further assessment of intermediate-term risk is necessary,
and EPA relies on the chronic dietary risk assessment for evaluating
intermediate-term risk for fenazaquin.
5. Aggregate cancer risk for U.S. population. Based on the lack of
evidence of carcinogenicity in two adequate rodent carcinogenicity
studies, fenazaquin is not expected to pose a cancer risk to humans.
6. Determination of safety. Based on these risk assessments, EPA
concludes that there is a reasonable certainty that no harm will result
to the general population, or to infants and children from aggregate
exposure to fenazaquin residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodology (high performance liquid
chromatography and tandem mass spectrometry (HPLC-MS/MS)) 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 fenazaquin.
C. Revisions to Petitioned-For Tolerances
EPA's review of the data supporting the petition, showed that there
was not sufficient data to support some of the tolerances originally
proposed by the registrant. Gowan Company, the registrant, revised
their petition by limiting their request for tolerances to almond and
cherry, which are supported by the available data. The Organization of
Economic Cooperation and Development (OECD) tolerance derivation
procedures indicates the need for the following changes in the proposed
tolerances: Cherries from 1.5 ppm to 2.0 ppm and almond hull from 0.6
ppm to 4.0 ppm. The Agency is also revising the tolerance expression to
clarify that (1) as provided in FFDCA section 408(a)(3), the tolerance
covers metabolites and degradates of fenazaquin not specifically
mentioned and (2) compliance with the specified tolerance levels is to
be determined by measuring only the specific compounds mentioned in the
tolerance expression.
V. Conclusion
Therefore, tolerances are established for residues of fenazaquin,
4-[2-[4-(1,1-dimethylethyl)phenyl]ethoxy]quinazoline, in or on almond
at 0.02 ppm, almond hulls at 4.0 ppm, and cherry at 2.0 ppm.
VI. Statutory and Executive Order Reviews
This action establishes tolerances under FFDCA section 408(d) in
response to a petition submitted to the Agency. The Office of
Management and Budget (OMB) has exempted these types of actions from
review under Executive Order 12866, entitled ``Regulatory Planning and
Review'' (58 FR 51735, October 4, 1993). Because this action has been
exempted from review under Executive Order 12866, this action is not
subject to Executive Order 13211, entitled ``Actions Concerning
Regulations That Significantly Affect Energy Supply, Distribution, or
Use'' (66 FR 28355, May 22, 2001) or Executive Order 13045, entitled
``Protection of Children from Environmental Health Risks and Safety
Risks'' (62 FR 19885, April 23, 1997). This action does not contain any
information collections subject to OMB approval under the Paperwork
Reduction Act (PRA) (44 U.S.C. 3501 et seq.), nor does it require any
special considerations under Executive Order 12898, entitled ``Federal
Actions to Address 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
[[Page 25958]]
12(d) of the National Technology Transfer and Advancement Act (NTTAA)
(15 U.S.C. 272 note).
VII. Congressional Review Act
Pursuant to the Congressional Review Act (5 U.S.C. 801 et seq.),
EPA will submit a report containing this rule and other required
information to the U.S. Senate, the U.S. House of Representatives, and
the Comptroller General of the United States prior to publication of
the rule in the Federal Register. This action is not a ``major rule''
as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection, Administrative practice and procedure,
Agricultural commodities, Pesticides and pests, Reporting and
recordkeeping requirements.
Dated: April 27, 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. 180.632, the section heading and paragraph (a) are revised
to read as follows:
Sec. 180.632 Fenazaquin; Tolerances for residues.
(a) General. Tolerances are established for residues of the
insecticide fenazaquin, including its metabolites and degradates, in or
on the commodities in the table below. Compliance with the tolerance
levels specified below is to be determined by measuring only
fenazaquin, or 4-[2-[4-(1,1-dimethylethyl)phenyl]ethoxy]quinazoline.
------------------------------------------------------------------------
Parts per
Commodity million
------------------------------------------------------------------------
Almond..................................................... 0.02
Almond, hulls.............................................. 4.0
Apple...................................................... 0.2
Cherry..................................................... 2.0
Citrus Oil................................................. 10
Fruit, Citrus, Group 10 except Grape fruit................. 0.5
Pear....................................................... 0.2
------------------------------------------------------------------------
* * * * *
[FR Doc. 2015-10375 Filed 5-5-15; 8:45 am]
BILLING CODE 6560-50-P