Pyriproxyfen; Pesticide Tolerances, 73951-73956 [2012-29978]
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Federal Register / Vol. 77, No. 239 / Wednesday, December 12, 2012 / Rules and Regulations
Dated: December 4, 2012.
Lois Rossi,
Director, Registration Division, Office of
Pesticide Programs.
Tea, dried 1 ...............................
Vegetable, fruiting, group 8–10
Therefore, 40 CFR chapter I is
amended as follows:
1 There
PART 180—[AMENDED]
1. The authority citation for part 180
continues to read as follows:
■
Authority: 21 U.S.C. 321(q), 346a and 371.
2. In § 180.566 revise paragraph (a)(1),
and the introductory texts of paragraphs
(a)(2), (a)(3) and (b) to read as follows:
■
§ 180.566 Fenpyroximate; tolerances for
residues.
(a) General. (1) Tolerances are
established for residues of the
insecticide fenpyroximate, including its
metabolites and degradates, in or on the
commodities in the table below.
Compliance with the tolerance levels
specified in the table is to be
determined by measuring only the sum
of fenpyroximate, (E)-1,1-dimethylethyl
4-[[[[(1,3-dimethyl-5-phenoxy-1Hpyrazol-4-yl)methylene]amino]oxy]
methyl]benzoate and its Z-isomer, (Z)1,1-dimethylethyl 4-[[[[(1,3-dimethyl-5phenoxy-1H-pyrazol-4-yl)methylene]
amino]oxy]methyl]benzoate, calculated
as the stoichiometric equivalent of
fenpyroximate.
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Commodity
Almond, hulls ............................
Avocado ....................................
Bean, snap, succulent ..............
Berry, low growing, subgroup
13–07G .................................
Canistel .....................................
Citrus, dried pulp ......................
Citrus, oil ...................................
Corn, field, forage .....................
Corn, field, grain .......................
Corn, field, refined oil ...............
Corn, field, stover .....................
Corn, pop, forage .....................
Corn, pop, grain ........................
Corn, pop, stover ......................
Cotton, gin byproducts .............
Cotton, undelinted seed ...........
Cucumber .................................
Fruit, citrus, group 10–10 .........
Fruit, pome, group 11–10 .........
Grain, aspirated fractions .........
Grape ........................................
Hop, dried cones ......................
Mango .......................................
Melon subgroup 9A ..................
Nut, tree, group 14 ...................
Papaya ......................................
Peppermint, tops ......................
Pistachio ...................................
Sapodilla ...................................
Sapote, black ............................
Sapote, mamey ........................
Spearmint, tops ........................
Star, apple ................................
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15:22 Dec 11, 2012
Parts per
million
Commodity
Parts per
million
3.0
0.15
0.40
1.0
0.15
2.5
10
2.0
0.02
0.05
7.0
2.0
0.02
7.0
10
0.10
0.40
0.50
0.30
0.40
1.0
10
0.15
0.10
0.10
0.15
7.0
0.10
0.15
0.15
0.15
7.0
0.15
Jkt 229001
20
0.20
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2011–1012; FRL–9365–6]
are no U.S. Registrations.
(2) Tolerances are established for
residues of the insecticide
fenpyroximate, including its metabolites
and degradates, in or on the
commodities in the table below.
Compliance with the tolerance levels
specified in the table is to be
determined by measuring only the sum
of fenpyroximate, (E)-1,1-dimethylethyl
4-[[[[(1,3-dimethyl-5-phenoxy-1Hpyrazol-4-yl)methylene]amino]oxy]
methyl]benzoate and its metabolites (E)4-[(1,3-dimethyl-5-phenoxypyrazol-4yl)-methyleneaminooxymethyl]benzoic
acid and (E)-1,1-dimethylethyl-2hydroxyethyl 4-[[[[(1,3-dimethyl-5phenoxy-1H-pyrazol-4-yl)methylene]
amino]oxy]methyl]benzoate, calculated
as the stoichiometric equivalent of
fenpyroximate.
*
*
*
*
*
(3) Tolerances are established for
residues of the insecticide
fenpyroximate, including its metabolites
and degradates, in or on the
commodities in the table below.
Compliance with the tolerance levels
specified in the table is to be
determined by measuring only the sum
of fenpyroximate, (E)-1,1-dimethylethyl
4-[[[[(1,3-dimethyl-5-phenoxy-1Hpyrazol-4-yl)methylene]amino]oxy]
methyl]benzoate and its metabolite (E)4-[(1,3-dimethyl-5-phenoxypyrazol-4yl)-methyleneaminooxymethyl]benzoic
acid, calculated as the stoichiometric
equivalent of fenpyroximate.
*
*
*
*
*
(b) Section 18 emergency exemptions.
Time-limited tolerances are established
for residues of the insecticide
fenpyroximate, including its metabolites
and degradates in or on the
commodities in the table below.
Compliance with the tolerance levels
specified in the table is to be
determined by measuring only the sum
of fenpyroximate, (E)-1,1-dimethylethyl
4-[[[[(1,3-dimethyl-5-phenoxy-1Hpyrazol-4-yl) methylene]amino]
oxy]methyl]benzoate and its Z-isomer,
(Z)-1,1-dimethylethyl 4-[[[[(1,3dimethyl-5-phenoxy-1H-pyrazol-4-yl)
methylene]amino]oxy]methyl]benzoate,
calculated as the stoichiometric
equivalent of fenpyroximate.
*
*
*
*
*
[FR Doc. 2012–29900 Filed 12–11–12; 8:45 am]
BILLING CODE 6560–50–P
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Pyriproxyfen; Pesticide Tolerances
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
This regulation establishes
tolerances for residues of pyriproxyfen
in or on multiple commodities which
are identified and discussed later in this
document. Interregional Research
Project Number 4 (IR–4) requested these
tolerances under the Federal Food,
Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective
December 12, 2012. Objections and
requests for hearings must be received
on or before February 11, 2013, 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–2011–1012, 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), EPA West
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:
Andrew Ertman, Registration Division
(7505P), Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave. NW., Washington,
DC 20460–0001; telephone number:
(703) 308–9367; email address:
ertman.andrew@epa.gov.
SUMMARY:
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
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Federal Register / Vol. 77, No. 239 / Wednesday, December 12, 2012 / Rules and Regulations
provides a guide to help readers
determine whether this document
applies to them. Potentially affected
entities may include:
• Crop production (NAICS code 111).
• Animal production (NAICS code
112).
• Food manufacturing (NAICS code
311).
• Pesticide manufacturing (NAICS
code 32532).
B. How can I get electronic access to
other related information?
You may access a frequently updated
electronic version of EPA’s tolerance
regulations at 40 CFR part 180 through
the Government Printing Office’s e-CFR
site at https://ecfr.gpoaccess.gov/cgi/t/
text/text-idx?&c=ecfr&tpl=/ecfrbrowse/
Title40/40tab_02.tpl.
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C. How Can I File an Objection or
Hearing Request?
Under FFDCA section 408(g), 21
U.S.C. 346a, any person may file an
objection to any aspect of this regulation
and may also request a hearing on those
objections. You must file your objection
or request a hearing on this regulation
in accordance with the instructions
provided in 40 CFR part 178. To ensure
proper receipt by EPA, you must
identify docket ID number EPA–HQ–
OPP–2011–1012 in the subject line on
the first page of your submission. All
objections and requests for a hearing
must be in writing, and must be
received by the Hearing Clerk on or
before February 11, 2013. 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–
2011–1012, 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.
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• 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.htm.
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 March 14,
2012 (77 FR 15012) (FRL–9335–9), 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 1E7950) by IR–4, IR–4
Project Headquarters, 500 College Rd.
East, Suite 201 W, Princeton, NJ 08540.
The petition requested that 40 CFR
180.510 be amended by establishing
tolerances for residues of the insecticide
pyriproxyfen, 2-[1-methyl-2-(4phenoxyphenoxy)ethoxypyridine, in or
on vegetable, bulb, group 3–07 at 0.70
parts per million (ppm); vegetable,
fruiting, group 8–10 at 0.20 ppm; fruit,
citrus, group 10–10 at 0.30 ppm; fruit,
pome, group 11–10 at 0.20 ppm;
caneberry subgroup 13–07A at 1.0 ppm;
bushberry subgroup 13–07B at 1.0 ppm;
berry, low growing, except strawberry,
subgroup 13–07H at 1.0 ppm; and herb
subgroup 19A at 50 ppm. Also, due to
the establishment of the tolerances for
the new crop groups listed in this unit,
the petition proposed the removal of the
following commodities as unnecessary:
Vegetable, bulb, group 3, except onion,
bulb; onion, bulb; vegetable, fruiting,
group 8; okra; fruit, citrus; fruit, pome;
caneberry subgroup 13–A; bushberry
subgroup 13–B; cranberry; loganberry;
juneberry; lingonberry; and salal. That
document referenced a summary of the
petition prepared by Valent USA
Corporation, the registrant, which is
available in the docket, https://
www.regulations.gov. There were no
comments received in response to the
notice of filing.
Based upon review of the data
supporting the petition, EPA has
modified the levels at which tolerances
are being established for several
commodities. The reason for these
changes is explained in Unit IV.C.
III. Aggregate Risk Assessment and
Determination of Safety
Section 408(b)(2)(A)(i) of FFDCA
allows EPA to establish a tolerance (the
legal limit for a pesticide chemical
residue in or on a food) only if EPA
determines that the tolerance is ‘‘safe.’’
Section 408(b)(2)(A)(ii) of FFDCA
defines ‘‘safe’’ to mean that ‘‘there is a
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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 pyriproxyfen
including exposure resulting from the
tolerances established by this action.
EPA’s assessment of exposures and risks
associated with pyriproxyfen 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.
Pyriproxyfen is of low acute toxicity
by oral, dermal, inhalation, and ocular
routes of exposure. Pyriproxyfen is not
a skin irritant and was negative in the
dermal sensitization study in guinea
pigs. Based on repeated dose studies in
mice, rats, and dogs the liver and kidney
are the principal target organs, with
slight anemia occurring in rodent
species. The review of the acute and
subchronic neurotoxicity studies
indicates pyriproxyfen is not a
neurotoxic chemical. There was no
evidence of prenatal or postnatal
sensitivity or increased susceptibility in
developmental studies in rats and
rabbits, and in reproduction studies in
rats. In the 2-generation reproduction
toxicity study, offspring toxicity
(decreased body weight on pups during
lactation days 14 to 21) occurred in the
presence of decreased body weight in
parental animals at the same dose level.
An immunotoxicity study showed no
adverse effects on the immune system.
No significant systemic toxicity was
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observed in either the 21-day dermal
toxicity study in rats. In a 28-day
inhalation study, the Lowest-observedadverse-effect-level (LOAEL) of 1
milligram/Liter (mg/L) based on
salivation in females and sporadic
decreased body weight gains in males
was not considered biologically
relevant. With respect to carcinogenicity
pyriproxyfen has been classified as a
‘‘Group E’’ chemical—no evidence for
carcinogenicity to humans based on the
absence of carcinogenicity in mice and
rats. Pyriproxyfen is negative for
mutagenic activity in a battery of
mutagenicity studies conducted with
both the parent and/or metabolites.
Specific information on the studies
received and the nature of the adverse
effects caused by pyriproxyfen 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 on pp. 28–33 in
the document titled ‘‘Pyriproxyfen.
Human Health Risk Assessment for the
Request to Add Uses on Herb Subgroup
19A, and the Expansions of Existing
Crop Group Uses to Numerous Crop
Subgroups’’ in docket ID number EPA–
HQ–OPP–2011–1012.
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
73953
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.
A summary of the toxicological
endpoints for pyriproxyfen used for
human risk assessment is shown in
Table 1 of this unit.
TABLE 1—SUMMARY OF TOXICOLOGICAL DOSES AND ENDPOINTS FOR PYRIPROXYFEN FOR USE IN HUMAN HEALTH RISK
ASSESSMENT
Exposure/scenario
Point of departure
and uncertainty/safety factors
RfD, PAD, LOC for
risk assessment
Study and toxicological effects
Acute dietary (Females 13–50
years of age and general
population).
An appropriate endpoint attributable to a single oral dose was not available in the data base, including the developmental and reproduction toxicity studies.
Chronic dietary (All populations)
NOAEL = 35.1 mg/
kg/day.
UFA = 10X
UFH = 10X
FQPA SF = 1X
NOAEL = 100 mg/
kg/day.
UFA = 10X
UFH = 10X
FQPA SF = 1X
NOAEL = 35.1 mg/
kg/day.
UFA= 10X
UFH= 10X
FQPA SF = 1X
Oral study NOAEL =
35.1 mg/kg/day
(dermal absorption
rate = 30%.
UFA = 10X
UFH = 10X
FQPA SF = 1X
Incidental oral short-term (1 to
30 days).
Incidental oral intermediateterm (1 to 6 months).
Dermal long-term (6 months—
lifetime).
Chronic RfD = 0.35
mg/kg/day.
cPAD = 0.35 mg/kg/
day.
Subchronic and chronic rat (co-critical)
LOAEL = 141.28 mg/kg/day based on decreased body weight
and alterations in clinical pathology parameters.
LOC for MOE = 100
Rat developmental toxicity Maternal LOAEL = 300 mg/kg/day
based on decreased body weight, body weight gain, and
food consumption, and increased water consumption.
LOC for MOE = 100
Subchronic and chronic rat (co-critical)
LOAEL = 141.28 mg/kg/day based on decreased body weight
and alterations in clinical pathology parameters.
LOC for MOE = 100
Subchronic and chronic rat (co-critical)
LOAEL = 141.28 mg/kg/day based decreased body weight and
alterations in clinical pathology parameters.
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 (c = chronic).
RfD = reference dose. UF = uncertainty factor. UFA = extrapolation from animal to human (interspecies). UFH = potential variation in sensitivity
among members of the human population (intraspecies).
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C. Exposure Assessment
1. Dietary exposure from food and
feed uses. In evaluating dietary
exposure to pyriproxyfen, EPA
considered exposure under the
petitioned-for tolerances as well as all
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existing pyriproxyfen tolerances in 40
CFR 180.510. EPA assessed dietary
exposures from pyriproxyfen in food as
follows:
i. Acute exposure. Quantitative acute
dietary exposure and risk assessments
are performed for a food-use pesticide,
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if a toxicological study has indicated the
possibility of an effect of concern
occurring as a result of a 1-day or single
exposure.
No such effects were identified in the
toxicological studies for pyriproxyfen;
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therefore, a quantitative acute dietary
exposure assessment is unnecessary.
ii. Chronic exposure. In conducting
the chronic dietary exposure assessment
EPA used the food consumption data
from the U.S. Department of Agriculture
(USDA) 1994–1996 and 1998
Continuing Survey of Food Intake by
Individuals (CSFII). As to residue levels
in food, EPA assumed 100 percent crop
treated (PCT) and tolerance level
residues.
iii. Cancer. Based on the data
summarized in Unit III.A., EPA has
concluded that pyriproxyfen 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 pyriproxyfen. Tolerance level
residues and/or 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 pyriproxyfen in drinking water.
These simulation models take into
account data on the physical, chemical,
and fate/transport characteristics of
pyriproxyfen. 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 1 Rice Model and
the Generic Estimated Exposure
Concentration (GENEEC) model the
estimated drinking water concentrations
(EDWCs) of pyriproxyfen for chronic
exposure assessments are estimated to
be 2.98 parts per billion (ppb) for
surface water and 0.006 ppb for ground
water.
Modeled estimates of drinking water
concentrations were directly entered
into the dietary exposure model. For
chronic dietary risk assessment, the
water concentration of value 2.98 ppb
was used to assess the contribution to
drinking water.
3. From non-dietary exposure. The
term ‘‘residential exposure’’ is used in
this document to refer to nonoccupational, non-dietary exposure
(e.g., for lawn and garden pest control,
indoor pest control, termiticides, and
flea and tick control on pets).
Pyriproxyfen is currently registered
for flea and tick control (home
environment and pet treatments) as well
as products for ant and roach control
(indoor and outdoor applications).
Formulations include carpet powders,
foggers, aerosol sprays, liquids
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(shampoos, sprays, and pipettes for pet
treatments), granules, bait (indoor and
outdoor), and impregnated materials
(pet collars). EPA assessed residential
exposure using the following
assumptions: Although there is the
potential for short-term residential
handler dermal and inhalation exposure
as well as short or intermediate postapplication exposure from the registered
uses of pyriproxyfen, there are no shortterm dermal or inhalation PODs and
quantitative assessments were not
conducted.
Based on the registered use patterns,
the following post-application scenarios
were assessed: Short- and intermediateterm hand-to-mouth exposures for 1 to
<2 year olds from treated carpets and
flooring and petting treated animals
(shampoos, sprays, spot-on treatments
and collars); long-term hand-to-mouth
exposures for 1 to <2 year olds from
treated carpets and flooring and petting
treated animals; and long-term dermal
exposures from treated carpets, flooring,
and pets.
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 pyriproxyfen to
share a common mechanism of toxicity
with any other substances, and
pyriproxyfen does not appear to
produce a toxic metabolite produced by
other substances. For the purposes of
this tolerance action, therefore, EPA has
assumed that pyriproxyfen 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
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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 factors (SF) when
reliable data available to EPA support
the choice of a different factor.
2. Prenatal and postnatal sensitivity.
Based on the available data, there is no
quantitative and qualitative evidence of
increased susceptibility observed
following in utero pyriproxyfen
exposure to rats and rabbits or following
prenatal/postnatal exposure in the 2generation reproduction study.
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
pyriproxfen is complete.
ii. There is no indication that
pyriproxyfen is a neurotoxic chemical
and there is no need for a
developmental neurotoxicity study or
additional uncertainty factors (UFs) to
account for neurotoxicity.
iii. There is no evidence that
pyriproxyfen 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 pyriproxyfen
in drinking water. EPA used similarly
conservative assumptions to assess postapplication exposure of children as well
as incidental oral exposure of toddlers.
These assessments will not
underestimate the exposure and risks
posed by pyriproxyfen.
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
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residential exposure to the appropriate
PODs to ensure that an adequate MOE
exists.
1. Acute risk. An acute aggregate risk
assessment takes into account acute
exposure estimates from dietary
consumption of food and drinking
water. No adverse effect resulting from
a single oral exposure was identified
and no acute dietary endpoint was
selected. Therefore, pyriproxyfen is not
expected to pose an acute risk.
2. Chronic risk. Using the exposure
assumptions described in this unit for
chronic exposure, EPA has concluded
that chronic exposure to pyriproxyfen
from food and water will utilize 12% of
the cPAD for children 1–2 years old, the
population group receiving the greatest
exposure. A long-term post-application
residential assessment was performed
for toddlers only since they are
anticipated to have higher exposures
than adults from treated home
environments and pets due to their
behavior patterns. The total chronic
dietary and residential aggregate MOE is
220 for children 1–2 years old. As this
MOE is greater than 100, the chronic
aggregate risk does not exceed EPA’s
level of concern.
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). Pyriproxyfen 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 pyriproxyfen.
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 an
aggregate MOE of 2,000 for children 1–
2 years old, the population subgroup
receiving the greatest exposure. Because
EPA’s level of concern (LOC) for
pyriproxyfen is a MOE of 100 or below,
this MOE is not of concern.
4. Intermediate-term risk.
Intermediate-term aggregate exposure
takes into account intermediate-term
residential exposure plus chronic
exposure to food and water (considered
to be a background exposure level).
Pyriproxyfen is currently registered
for uses that could result in
intermediate-term residential exposure,
and the Agency has determined that it
is appropriate to aggregate chronic
exposure through food and water with
intermediate-term residential exposures
to pyriproxyfen.
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Using the exposure assumptions
described in this unit for intermediateterm exposures, EPA has concluded that
the combined intermediate-term food,
water, and residential exposures result
in an aggregate MOE of 720 for children
1–2 years old, the population subgroup
receiving the greatest exposure. Because
EPA’s LOC for pyriproxyfen is a MOE of
100 or below, this MOE is not of
concern.
5. Aggregate cancer risk for U.S.
population. Based on the lack of
evidence of carcinogenicity in two
adequate rodent carcinogenicity studies,
pyriproxyfen 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 pyriproxyfen
residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodology
(Gas Chromatography with Nitrogen
Phosphorous Detection; GC/NPD) 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 established MRLs for
pyriproxyfen in or on citrus fruit at 0.50
ppm. This MRL is the same as the
tolerance being established for
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Fmt 4700
Sfmt 4700
73955
pyriproxyfen on the citrus group 10–10
in the United States. There are no Codex
MRLs for the other commodities
addressed by this final rule.
C. Revisions to Petitioned-for Tolerances
Based on calculations using the
Organization for Economic Co-operation
and Development (OECD) MRL
calculator, the Agency is establishing
the tolerance for the herb subgroup 19A
at 100 ppm instead of the proposed
level of 50 ppm. In addition, the
tolerance for the citrus fruit group 10–
10 is being revised to 0.5 ppm to
harmonize with Codex and the tolerance
for the fruiting vegetable group 8–10 is
being revised to 0.8 ppm to harmonize
with the Canadian MRL for bell
peppers.
Lastly, EPA has revised the tolerance
expression to clarify:
1. That, as provided in FFDCA section
408(a)(3), the tolerance covers
metabolites and degradates of
pyriproxyfen not specifically
mentioned.
2. That 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 pyriproxyfen, 2-[1methyl-2-(4-phenoxyphenoxy)
ethoxypyridine, in or on vegetable, bulb,
group 3–07 at 0.70 ppm; vegetable,
fruiting, group 8–10 at 0.80 ppm; fruit,
citrus, group 10–10 at 0.50 ppm; fruit,
pome, group 11–10 at 0.20 ppm;
caneberry subgroup 13–07A at 1.0 ppm;
bushberry subgroup 13–07B at 1.0 ppm;
berry, low growing, except strawberry,
subgroup 13–07H at 1.0 ppm; and the
herb subgroup 19A at 100 ppm. Also,
due to the establishment of the
tolerances for the new crop groups
listed in this unit, the following are
being removed as unnecessary:
Vegetable, bulb, group 3, except onion,
bulb; onion, bulb; vegetable, fruiting,
group 8; okra; fruit, citrus; fruit, pome;
caneberry subgroup 13–A; bushberry
subgroup 13–B; cranberry; loganberry;
juneberry; lingonberry; salal; and citrus
hybrids.
VI. Statutory and Executive Order
Reviews
This final rule 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 final rule
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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 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 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 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 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) (2 U.S.C. 1501 et seq.).
This action does not involve any
technical standards that would require
Agency consideration of voluntary
consensus standards pursuant to section
12(d) of the National Technology
Transfer and Advancement Act of 1995
(NTTAA) (15 U.S.C. 272 note).
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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.
Parts per
million
Commodity
*
*
*
*
Bushberry subgroup 13–07B ..
*
1.0
*
*
*
Caneberry subgroup 13–07A
*
1.0
*
*
*
*
*
Fruit, citrus, group 10–10 .......
Fruit, pome, group 11–10 .......
*
*
*
*
Herb subgroup 19A ................
*
0.50
0.20
*
100
*
0.70
*
*
*
*
Vegetable, fruiting, group 8–
10 ........................................
Dated: December 4, 2012.
Lois Rossi,
Director, Registration Division, Office of
Pesticide Programs.
*
*
*
*
Vegetable, bulb, group 3–07 ..
*
*
Therefore, 40 CFR chapter I is
amended as follows:
*
*
*
*
*
*
*
0.80
*
*
[FR Doc. 2012–29978 Filed 12–11–12; 8:45 am]
PART 180—[AMENDED]
BILLING CODE 6560–50–P
1. The authority citation for part 180
continues to read as follows:
■
Authority: 21 U.S.C. 321(q), 346a and 371.
2. In § 180.510:
a. Revise the introductory text of
paragraph (a)(1).
■ b. Remove from the table in paragraph
(a)(1) the commodities: ‘‘Bushberry
subgroup 13–B’’; ‘‘Caneberry subgroup
13–A’’; ‘‘Citrus hybrids’’, ‘‘Cranberry’’;
‘‘Fruit, citrus’’; ‘‘Fruit, pome’’;
‘‘Juneberry’’; ‘‘Lingonberry’’;
‘‘Loganberry’’; ‘‘Okra’’; ‘‘Onion, bulb’’;
‘‘Salal’’; and ‘‘Vegetable, bulb, group 3,
except onion, bulb’’; and ‘‘Vegetable,
fruiting, group 8’’.
■ c. Add alphabetically the following
commodities to the table in paragraph
(a)(1).
The amendments read as follows:
■
■
§ 180.510 Pyriproxyfen; tolerances for
residues.
(a) General. (1) Tolerances are
established for residues of pyriproxyfen,
including its metabolites and
degradates, in or on the commodities in
the following table. Compliance with
the tolerance levels specified is
determined by measuring only
pyriproxyfen, 2-[1-methyl-2-(4phenoxyphenoxy) ethoxy]pyridine, in
or on the commodity.
Parts per
million
Commodity
*
*
*
*
Berry, low growing, except
strawberry, subgroup 13–
07H ......................................
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*
1.0
FEDERAL COMMUNICATIONS
COMMISSION
47 CFR Part 101
[WT Docket No. 10–153; RM–11602; FCC
12–122]
Facilitating the Use of Microwave for
Wireless Backhaul and Other Uses and
Providing Additional Flexibility to
Broadcast Auxiliary Service and
Operational Fixed Microwave
Licensees
Federal Communications
Commission.
ACTION: Correcting amendments.
AGENCY:
The Federal Communications
Commission (FCC) published a
document in the Federal Register of
September 5, 2012. In this document,
the FCC on its own motion, pursuant to
§ 1.108 of the Commission’s rules,
corrects the channel center frequencies
to align the wider 60 and 80 megahertz
channels with the existing 30 and 40
megahertz channels in part 101 of our
rules in the Wireless Backhaul 2nd R&O
and issues this limited modification of
the Wireless Backhaul 2nd R&O, in
order to establish more efficient channel
assignments, consistent with the
Commission’s intent to improve
spectrum utilization in these bands. In
addition, the FCC corrects an entry to
the table in § 101.115(b)(2).
DATES: Effective December 12, 2012.
FOR FURTHER INFORMATION CONTACT: John
Schauble, Wireless Telecommunications
SUMMARY:
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Agencies
[Federal Register Volume 77, Number 239 (Wednesday, December 12, 2012)]
[Rules and Regulations]
[Pages 73951-73956]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-29978]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2011-1012; FRL-9365-6]
Pyriproxyfen; Pesticide Tolerances
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes tolerances for residues of
pyriproxyfen in or on multiple commodities which are identified and
discussed later in this document. Interregional Research Project Number
4 (IR-4) requested these tolerances under the Federal Food, Drug, and
Cosmetic Act (FFDCA).
DATES: This regulation is effective December 12, 2012. Objections and
requests for hearings must be received on or before February 11, 2013,
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-2011-1012, 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), EPA West 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: Andrew Ertman, Registration Division
(7505P), Office of Pesticide Programs, Environmental Protection Agency,
1200 Pennsylvania Ave. NW., Washington, DC 20460-0001; telephone
number: (703) 308-9367; email address: ertman.andrew@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
[[Page 73952]]
provides a guide to help readers determine whether this document
applies to them. Potentially affected entities may include:
Crop production (NAICS code 111).
Animal production (NAICS code 112).
Food manufacturing (NAICS code 311).
Pesticide manufacturing (NAICS code 32532).
B. How can I get electronic access to other related information?
You may access a frequently updated electronic version of EPA's
tolerance regulations at 40 CFR part 180 through the Government
Printing Office's e-CFR site at https://ecfr.gpoaccess.gov/cgi/t/text/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-2011-1012 in the subject line on the first
page of your submission. All objections and requests for a hearing must
be in writing, and must be received by the Hearing Clerk on or before
February 11, 2013. 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-2011-1012, 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.htm.
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 March 14, 2012 (77 FR 15012) (FRL-9335-
9), 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
1E7950) by IR-4, IR-4 Project Headquarters, 500 College Rd. East, Suite
201 W, Princeton, NJ 08540. The petition requested that 40 CFR 180.510
be amended by establishing tolerances for residues of the insecticide
pyriproxyfen, 2-[1-methyl-2-(4-phenoxyphenoxy)ethoxypyridine, in or on
vegetable, bulb, group 3-07 at 0.70 parts per million (ppm); vegetable,
fruiting, group 8-10 at 0.20 ppm; fruit, citrus, group 10-10 at 0.30
ppm; fruit, pome, group 11-10 at 0.20 ppm; caneberry subgroup 13-07A at
1.0 ppm; bushberry subgroup 13-07B at 1.0 ppm; berry, low growing,
except strawberry, subgroup 13-07H at 1.0 ppm; and herb subgroup 19A at
50 ppm. Also, due to the establishment of the tolerances for the new
crop groups listed in this unit, the petition proposed the removal of
the following commodities as unnecessary: Vegetable, bulb, group 3,
except onion, bulb; onion, bulb; vegetable, fruiting, group 8; okra;
fruit, citrus; fruit, pome; caneberry subgroup 13-A; bushberry subgroup
13-B; cranberry; loganberry; juneberry; lingonberry; and salal. That
document referenced a summary of the petition prepared by Valent USA
Corporation, the registrant, which is available in the docket, https://www.regulations.gov. There were no comments received in response to the
notice of filing.
Based upon review of the data supporting the petition, EPA has
modified the levels at which tolerances are being established for
several commodities. The reason for these changes is explained in Unit
IV.C.
III. Aggregate Risk Assessment and Determination of Safety
Section 408(b)(2)(A)(i) of FFDCA allows EPA to establish a
tolerance (the legal limit for a pesticide chemical residue in or on a
food) only if EPA determines that the tolerance is ``safe.'' Section
408(b)(2)(A)(ii) of FFDCA defines ``safe'' to mean that ``there is a
reasonable certainty that no harm will result from aggregate exposure
to the pesticide chemical residue, including all anticipated dietary
exposures and all other exposures for which there is reliable
information.'' This includes exposure through drinking water and in
residential settings, but does not include occupational exposure.
Section 408(b)(2)(C) of FFDCA requires EPA to give special
consideration to exposure of infants and children to the pesticide
chemical residue in establishing a tolerance and to ``ensure that there
is a reasonable certainty that no harm will result to infants and
children from aggregate exposure to the pesticide chemical residue * *
*.''
Consistent with FFDCA section 408(b)(2)(D), and the factors
specified in FFDCA section 408(b)(2)(D), EPA has reviewed the available
scientific data and other relevant information in support of this
action. EPA has sufficient data to assess the hazards of and to make a
determination on aggregate exposure for pyriproxyfen including exposure
resulting from the tolerances established by this action. EPA's
assessment of exposures and risks associated with pyriproxyfen 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.
Pyriproxyfen is of low acute toxicity by oral, dermal, inhalation,
and ocular routes of exposure. Pyriproxyfen is not a skin irritant and
was negative in the dermal sensitization study in guinea pigs. Based on
repeated dose studies in mice, rats, and dogs the liver and kidney are
the principal target organs, with slight anemia occurring in rodent
species. The review of the acute and subchronic neurotoxicity studies
indicates pyriproxyfen is not a neurotoxic chemical. There was no
evidence of prenatal or postnatal sensitivity or increased
susceptibility in developmental studies in rats and rabbits, and in
reproduction studies in rats. In the 2-generation reproduction toxicity
study, offspring toxicity (decreased body weight on pups during
lactation days 14 to 21) occurred in the presence of decreased body
weight in parental animals at the same dose level. An immunotoxicity
study showed no adverse effects on the immune system. No significant
systemic toxicity was
[[Page 73953]]
observed in either the 21-day dermal toxicity study in rats. In a 28-
day inhalation study, the Lowest-observed-adverse-effect-level (LOAEL)
of 1 milligram/Liter (mg/L) based on salivation in females and sporadic
decreased body weight gains in males was not considered biologically
relevant. With respect to carcinogenicity pyriproxyfen has been
classified as a ``Group E'' chemical--no evidence for carcinogenicity
to humans based on the absence of carcinogenicity in mice and rats.
Pyriproxyfen is negative for mutagenic activity in a battery of
mutagenicity studies conducted with both the parent and/or metabolites.
Specific information on the studies received and the nature of the
adverse effects caused by pyriproxyfen 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 on pp. 28-33 in the document titled ``Pyriproxyfen.
Human Health Risk Assessment for the Request to Add Uses on Herb
Subgroup 19A, and the Expansions of Existing Crop Group Uses to
Numerous Crop Subgroups'' in docket ID number EPA-HQ-OPP-2011-1012.
B. Toxicological Points of Departure/Levels of Concern
Once a pesticide's toxicological profile is determined, EPA
identifies toxicological points of departure (POD) and levels of
concern to use in evaluating the risk posed by human exposure to the
pesticide. For hazards that have a threshold below which there is no
appreciable risk, the toxicological POD is used as the basis for
derivation of reference values for risk assessment. PODs are developed
based on a careful analysis of the doses in each toxicological study to
determine the dose at which no adverse effects are observed (the NOAEL)
and the lowest dose at which adverse effects of concern are identified
(the LOAEL). Uncertainty/safety factors are used in conjunction with
the POD to calculate a safe exposure level--generally referred to as a
population-adjusted dose (PAD) or a reference dose (RfD)--and a safe
margin of exposure (MOE). For non-threshold risks, the Agency assumes
that any amount of exposure will lead to some degree of risk. Thus, the
Agency estimates risk in terms of the probability of an occurrence of
the adverse effect expected in a lifetime. For more information on the
general principles EPA uses in risk characterization and a complete
description of the risk assessment process, see https://www.epa.gov/pesticides/factsheets/riskassess.htm.
A summary of the toxicological endpoints for pyriproxyfen used for
human risk assessment is shown in Table 1 of this unit.
Table 1--Summary of Toxicological Doses and Endpoints for Pyriproxyfen 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 (Females 13-50 An appropriate endpoint attributable to a single oral dose was not available
years of age and general in the data base, including the developmental and reproduction toxicity
population). studies.
------------------------------------------------------------------------------
Chronic dietary (All populations) NOAEL = 35.1 mg/kg/ Chronic RfD = 0.35 Subchronic and chronic rat (co-
day. mg/kg/day. critical)
UFA = 10X........... cPAD = 0.35 mg/kg/ LOAEL = 141.28 mg/kg/day based on
UFH = 10X........... day. decreased body weight and
FQPA SF = 1X........ alterations in clinical pathology
parameters.
Incidental oral short-term (1 to NOAEL = 100 mg/kg/ LOC for MOE = 100.. Rat developmental toxicity
30 days). day. Maternal LOAEL = 300 mg/kg/day
UFA = 10X........... based on decreased body weight,
UFH = 10X........... body weight gain, and food
FQPA SF = 1X........ consumption, and increased water
consumption.
Incidental oral intermediate-term NOAEL = 35.1 mg/kg/ LOC for MOE = 100.. Subchronic and chronic rat (co-
(1 to 6 months). day. critical)
UFA= 10X............ LOAEL = 141.28 mg/kg/day based on
UFH= 10X............ decreased body weight and
FQPA SF = 1X........ alterations in clinical pathology
parameters.
Dermal long-term (6 months-- Oral study NOAEL = LOC for MOE = 100.. Subchronic and chronic rat (co-
lifetime). 35.1 mg/kg/day critical)
(dermal absorption LOAEL = 141.28 mg/kg/day based
rate = 30%. decreased body weight and
UFA = 10X........... alterations in clinical pathology
UFH = 10X........... parameters.
FQPA SF = 1X........
----------------------------------------------------------------------------------------------------------------
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 (c = chronic). RfD = reference dose. UF = uncertainty factor. UFA =
extrapolation from animal to human (interspecies). UFH = potential variation in sensitivity among members of
the human population (intraspecies).
C. Exposure Assessment
1. Dietary exposure from food and feed uses. In evaluating dietary
exposure to pyriproxyfen, EPA considered exposure under the petitioned-
for tolerances as well as all existing pyriproxyfen tolerances in 40
CFR 180.510. EPA assessed dietary exposures from pyriproxyfen 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.
No such effects were identified in the toxicological studies for
pyriproxyfen;
[[Page 73954]]
therefore, a quantitative acute dietary exposure assessment is
unnecessary.
ii. Chronic exposure. In conducting the chronic dietary exposure
assessment EPA used the food consumption data from the U.S. Department
of Agriculture (USDA) 1994-1996 and 1998 Continuing Survey of Food
Intake by Individuals (CSFII). As to residue levels in food, EPA
assumed 100 percent crop treated (PCT) and tolerance level residues.
iii. Cancer. Based on the data summarized in Unit III.A., EPA has
concluded that pyriproxyfen 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 pyriproxyfen. Tolerance level residues and/or
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 pyriproxyfen in drinking water. These simulation models
take into account data on the physical, chemical, and fate/transport
characteristics of pyriproxyfen. 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 1 Rice Model and the Generic Estimated Exposure
Concentration (GENEEC) model the estimated drinking water
concentrations (EDWCs) of pyriproxyfen for chronic exposure assessments
are estimated to be 2.98 parts per billion (ppb) for surface water and
0.006 ppb for ground water.
Modeled estimates of drinking water concentrations were directly
entered into the dietary exposure model. For chronic dietary risk
assessment, the water concentration of value 2.98 ppb was used to
assess the contribution to drinking water.
3. From non-dietary exposure. The term ``residential exposure'' is
used in this document to refer to non-occupational, non-dietary
exposure (e.g., for lawn and garden pest control, indoor pest control,
termiticides, and flea and tick control on pets).
Pyriproxyfen is currently registered for flea and tick control
(home environment and pet treatments) as well as products for ant and
roach control (indoor and outdoor applications). Formulations include
carpet powders, foggers, aerosol sprays, liquids (shampoos, sprays, and
pipettes for pet treatments), granules, bait (indoor and outdoor), and
impregnated materials (pet collars). EPA assessed residential exposure
using the following assumptions: Although there is the potential for
short-term residential handler dermal and inhalation exposure as well
as short or intermediate post-application exposure from the registered
uses of pyriproxyfen, there are no short-term dermal or inhalation PODs
and quantitative assessments were not conducted.
Based on the registered use patterns, the following post-
application scenarios were assessed: Short- and intermediate-term hand-
to-mouth exposures for 1 to <2 year olds from treated carpets and
flooring and petting treated animals (shampoos, sprays, spot-on
treatments and collars); long-term hand-to-mouth exposures for 1 to <2
year olds from treated carpets and flooring and petting treated
animals; and long-term dermal exposures from treated carpets, flooring,
and pets.
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 pyriproxyfen to share a common mechanism of
toxicity with any other substances, and pyriproxyfen does not appear to
produce a toxic metabolite produced by other substances. For the
purposes of this tolerance action, therefore, EPA has assumed that
pyriproxyfen 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 factors (SF) when reliable data available to EPA support the
choice of a different factor.
2. Prenatal and postnatal sensitivity. Based on the available data,
there is no quantitative and qualitative evidence of increased
susceptibility observed following in utero pyriproxyfen exposure to
rats and rabbits or following prenatal/postnatal exposure in the 2-
generation reproduction study.
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 pyriproxfen is complete.
ii. There is no indication that pyriproxyfen is a neurotoxic
chemical and there is no need for a developmental neurotoxicity study
or additional uncertainty factors (UFs) to account for neurotoxicity.
iii. There is no evidence that pyriproxyfen 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 pyriproxyfen in drinking water. EPA used
similarly conservative assumptions to assess post-application exposure
of children as well as incidental oral exposure of toddlers. These
assessments will not underestimate the exposure and risks posed by
pyriproxyfen.
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
[[Page 73955]]
residential exposure to the appropriate PODs to ensure that an adequate
MOE exists.
1. Acute risk. An acute aggregate risk assessment takes into
account acute exposure estimates from dietary consumption of food and
drinking water. No adverse effect resulting from a single oral exposure
was identified and no acute dietary endpoint was selected. Therefore,
pyriproxyfen is not expected to pose an acute risk.
2. Chronic risk. Using the exposure assumptions described in this
unit for chronic exposure, EPA has concluded that chronic exposure to
pyriproxyfen from food and water will utilize 12% of the cPAD for
children 1-2 years old, the population group receiving the greatest
exposure. A long-term post-application residential assessment was
performed for toddlers only since they are anticipated to have higher
exposures than adults from treated home environments and pets due to
their behavior patterns. The total chronic dietary and residential
aggregate MOE is 220 for children 1-2 years old. As this MOE is greater
than 100, the chronic aggregate risk does not exceed EPA's level of
concern.
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). Pyriproxyfen
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 pyriproxyfen.
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 an aggregate MOE of 2,000 for
children 1-2 years old, the population subgroup receiving the greatest
exposure. Because EPA's level of concern (LOC) for pyriproxyfen is a
MOE of 100 or below, this MOE is not of concern.
4. Intermediate-term risk. Intermediate-term aggregate exposure
takes into account intermediate-term residential exposure plus chronic
exposure to food and water (considered to be a background exposure
level).
Pyriproxyfen is currently registered for uses that could result in
intermediate-term residential exposure, and the Agency has determined
that it is appropriate to aggregate chronic exposure through food and
water with intermediate-term residential exposures to pyriproxyfen.
Using the exposure assumptions described in this unit for
intermediate-term exposures, EPA has concluded that the combined
intermediate-term food, water, and residential exposures result in an
aggregate MOE of 720 for children 1-2 years old, the population
subgroup receiving the greatest exposure. Because EPA's LOC for
pyriproxyfen is a MOE of 100 or below, this MOE is not of concern.
5. Aggregate cancer risk for U.S. population. Based on the lack of
evidence of carcinogenicity in two adequate rodent carcinogenicity
studies, pyriproxyfen 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 pyriproxyfen residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodology (Gas Chromatography with Nitrogen
Phosphorous Detection; GC/NPD) 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 established MRLs for pyriproxyfen in or on citrus
fruit at 0.50 ppm. This MRL is the same as the tolerance being
established for pyriproxyfen on the citrus group 10-10 in the United
States. There are no Codex MRLs for the other commodities addressed by
this final rule.
C. Revisions to Petitioned-for Tolerances
Based on calculations using the Organization for Economic Co-
operation and Development (OECD) MRL calculator, the Agency is
establishing the tolerance for the herb subgroup 19A at 100 ppm instead
of the proposed level of 50 ppm. In addition, the tolerance for the
citrus fruit group 10-10 is being revised to 0.5 ppm to harmonize with
Codex and the tolerance for the fruiting vegetable group 8-10 is being
revised to 0.8 ppm to harmonize with the Canadian MRL for bell peppers.
Lastly, EPA has revised the tolerance expression to clarify:
1. That, as provided in FFDCA section 408(a)(3), the tolerance
covers metabolites and degradates of pyriproxyfen not specifically
mentioned.
2. That 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 pyriproxyfen,
2-[1-methyl-2-(4-phenoxyphenoxy) ethoxypyridine, in or on vegetable,
bulb, group 3-07 at 0.70 ppm; vegetable, fruiting, group 8-10 at 0.80
ppm; fruit, citrus, group 10-10 at 0.50 ppm; fruit, pome, group 11-10
at 0.20 ppm; caneberry subgroup 13-07A at 1.0 ppm; bushberry subgroup
13-07B at 1.0 ppm; berry, low growing, except strawberry, subgroup 13-
07H at 1.0 ppm; and the herb subgroup 19A at 100 ppm. Also, due to the
establishment of the tolerances for the new crop groups listed in this
unit, the following are being removed as unnecessary: Vegetable, bulb,
group 3, except onion, bulb; onion, bulb; vegetable, fruiting, group 8;
okra; fruit, citrus; fruit, pome; caneberry subgroup 13-A; bushberry
subgroup 13-B; cranberry; loganberry; juneberry; lingonberry; salal;
and citrus hybrids.
VI. Statutory and Executive Order Reviews
This final rule 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 final rule
[[Page 73956]]
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 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 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 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 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) (2 U.S.C. 1501 et seq.).
This action does not involve any technical standards that would
require Agency consideration of voluntary consensus standards pursuant
to section 12(d) of the National Technology Transfer and Advancement
Act of 1995 (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: December 4, 2012.
Lois Rossi,
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. 180.510:
0
a. Revise the introductory text of paragraph (a)(1).
0
b. Remove from the table in paragraph (a)(1) the commodities:
``Bushberry subgroup 13-B''; ``Caneberry subgroup 13-A''; ``Citrus
hybrids'', ``Cranberry''; ``Fruit, citrus''; ``Fruit, pome'';
``Juneberry''; ``Lingonberry''; ``Loganberry''; ``Okra''; ``Onion,
bulb''; ``Salal''; and ``Vegetable, bulb, group 3, except onion,
bulb''; and ``Vegetable, fruiting, group 8''.
0
c. Add alphabetically the following commodities to the table in
paragraph (a)(1).
The amendments read as follows:
Sec. 180.510 Pyriproxyfen; tolerances for residues.
(a) General. (1) Tolerances are established for residues of
pyriproxyfen, including its metabolites and degradates, in or on the
commodities in the following table. Compliance with the tolerance
levels specified is determined by measuring only pyriproxyfen, 2-[1-
methyl-2-(4-phenoxyphenoxy) ethoxy]pyridine, in or on the commodity.
------------------------------------------------------------------------
Parts per
Commodity million
------------------------------------------------------------------------
* * * * *
Berry, low growing, except strawberry, subgroup 13-07H.... 1.0
* * * * *
Bushberry subgroup 13-07B................................. 1.0
* * * * *
Caneberry subgroup 13-07A................................. 1.0
* * * * *
Fruit, citrus, group 10-10................................ 0.50
Fruit, pome, group 11-10.................................. 0.20
* * * * *
Herb subgroup 19A......................................... 100
* * * * *
Vegetable, bulb, group 3-07............................... 0.70
* * * * *
Vegetable, fruiting, group 8-10........................... 0.80
* * * * *
------------------------------------------------------------------------
* * * * *
[FR Doc. 2012-29978 Filed 12-11-12; 8:45 am]
BILLING CODE 6560-50-P