Pyriproxyfen; Pesticide Tolerances, 55463-55467 [E9-25689]
Download as PDF
Federal Register / Vol. 74, No. 207 / Wednesday, October 28, 2009 / Rules and Regulations
General of the United States. EPA will
submit a report containing this rule and
other required information to the U.S.
Senate, the U.S. House of
Representatives, and the Comptroller
General of the United States prior to
publication of this final rule in the
Federal Register. This final rule is not
a ‘‘major rule’’ as defined by 5 U.S.C.
804(2).
List of Subjects in 40 CFR Part 180
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
Dated: October 15, 2009.
Keith A. Matthews,
Acting 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. Section 180.1291 is added to
subpart D to read as follows:
■
§ 180.1291 Cold pressed neem oil;
exemption from the requirement of a
tolerance.
Residues of the biochemical pesticide
cold pressed neem oil are exempt from
the requirement of a tolerance in or on
all food commodities.
[FR Doc. E9–25455 Filed 10–27–09; 8:45 am]
BILLING CODE 6560–50–S
ENVIRONMENTAL PROTECTION
AGENCY
requested these tolerances under the
Federal Food, Drug, and Cosmetic Act
(FFDCA).
DATES: This regulation is effective
October 28, 2009. Objections and
requests for hearings must be received
on or before December 28, 2009, and
must be filed in accordance with the
instructions provided in 40 CFR part
178 (see also Unit I.C. of the
SUPPLEMENTARY INFORMATION).
ADDRESSES: EPA has established a
docket for this action under docket
identification (ID) number EPA–HQ–
OPP–2009–0018. All documents in the
docket are listed in the docket index
available at https://www.regulations.gov.
Although listed in the index, some
information is not publicly available,
e.g., Confidential Business Information
(CBI) or other information whose
disclosure is restricted by statute.
Certain other material, such as
copyrighted material, is not placed on
the Internet and will be publicly
available only in hard copy form.
Publicly available docket materials are
available in the electronic docket at
https://www.regulations.gov, or, if only
available in hard copy, at the OPP
Regulatory Public Docket in Rm. S–
4400, One Potomac Yard (South Bldg.),
2777 S. Crystal Dr., Arlington, VA. The
Docket Facility is open from 8:30 a.m.
to 4 p.m., Monday through Friday,
excluding legal holidays. The Docket
Facility telephone number is (703) 305–
5805.
FOR FURTHER INFORMATION CONTACT:
Barbara Madden, Registration Division,
Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington,
DC 20460–0001; telephone number:
(703) 305–6463; e-mail address:
madden.barbara@epa.gov.
SUPPLEMENTARY INFORMATION:
[EPA–HQ–OPP–2009–0018; FRL–8795–3]
I. General Information
Pyriproxyfen; Pesticide Tolerances
A. Does this Action Apply to Me?
AGENCY: Environmental Protection
Agency (EPA).
ACTION: Final rule.
erowe on DSK5CLS3C1PROD with RULES
40 CFR Part 180
You may be potentially affected by
this action if you are an agricultural
producer, food manufacturer, or
pesticide manufacturer. Potentially
affected entities may include, but are
not limited to those engaged in the
following activities:
• Crop production (NAICS code 111).
• Animal production (NAICS code
112).
• Food manufacturing (NAICS code
311).
• Pesticide manufacturing (NAICS
code 32532).
This listing is not intended to be
exhaustive, but rather to provide a guide
for readers regarding entities likely to be
SUMMARY: This regulation establishes
tolerances for residues of pyriproxyfen
in or on artichoke, globe; asparagus;
fruit, small, vine climbing subgroup,
except grape 13–07E; vegetable, foliage
of legume, group 7; vegetable, leafy,
except brassica, group 4; vegetable,
leaves of root and tuber, group 2; and
watercress. It also removes the section
18 time-limited tolerances on succulent
bean, celery and strawberry since these
tolerances have expired. Interregional
Research Project Number 4 (IR-4)
VerDate Nov<24>2008
14:04 Oct 27, 2009
Jkt 220001
PO 00000
Frm 00023
Fmt 4700
Sfmt 4700
55463
affected by this action. Other types of
entities not listed in this unit could also
be affected. The North American
Industrial Classification System
(NAICS) codes have been provided to
assist you and others in determining
whether this action might apply to
certain entities. If you have any
questions regarding the applicability of
this action to a particular entity, consult
the person listed under FOR FURTHER
INFORMATION CONTACT.
B. How Can I Access Electronic Copies
of this Document?
In addition to accessing electronically
available documents at https://
www.regulations.gov, you may access
this Federal Register document
electronically through the EPA Internet
under the ‘‘Federal Register’’ listings at
https://www.epa.gov/fedrgstr. You may
also access a frequently updated
electronic version of EPA’s tolerance
regulations at 40 CFR part 180 through
the Government Printing Office’s e-CFR
cite at https://www.gpoaccess.gov/ecfr.
To access the OPPTS Harmonized Test
Guidelines referenced in this document,
go directly to the guidelines at https://
www.epa.gov/oppts and select ‘‘Test
Methods & Guidelines’’ on the left side
navigation menu.
C. Can I File an Objection or Hearing
Request?
Under section 408(g) of FFDCA, 21
U.S.C. 346a, any person may file an
objection to any aspect of this regulation
and may also request a hearing on those
objections. You must file your objection
or request a hearing on this regulation
in accordance with the instructions
provided in 40 CFR part 178. To ensure
proper receipt by EPA, you must
identify docket ID number EPA–HQ–
OPP–2009–0018 in the subject line on
the first page of your submission. All
requests must be in writing, and must be
mailed or delivered to the Hearing Clerk
as required by 40 CFR part 178 on or
before December 28, 2009.
In addition to filing an objection or
hearing request with the Hearing Clerk
as described in 40 CFR part 178, please
submit a copy of the filing that does not
contain any CBI for inclusion in the
public docket that is described in
ADDRESSES. Information not marked
confidential pursuant to 40 CFR part 2
may be disclosed publicly by EPA
without prior notice. Submit this copy,
identified by docket ID number EPA–
HQ–OPP–2009–0018, by one of the
following methods:
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the on-line
instructions for submitting comments.
E:\FR\FM\28OCR1.SGM
28OCR1
55464
Federal Register / Vol. 74, No. 207 / Wednesday, October 28, 2009 / Rules and Regulations
• Mail: Office of Pesticide Programs
(OPP) Regulatory Public Docket (7502P),
Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington,
DC 20460–0001.
• Delivery: OPP Regulatory Public
Docket (7502P), Environmental
Protection Agency, Rm. S–4400, One
Potomac Yard (South Bldg.), 2777 S.
Crystal Dr., Arlington, VA. Deliveries
are only accepted during the Docket
Facility’s normal hours of operation
(8:30 a.m. to 4 p.m., Monday through
Friday, excluding legal holidays).
Special arrangements should be made
for deliveries of boxed information. The
Docket Facility telephone number is
(703) 305–5805.
erowe on DSK5CLS3C1PROD with RULES
II. Petition for Tolerance
In the Federal Register of April 8,
2009 (74 FR 15971) (FRL–8407–4), EPA
issued a notice pursuant to section
408(d)(3) of FFDCA, 21 U.S.C.
346a(d)(3), announcing the filing of a
pesticide petition (PP 8E7492) 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 in or on
artichoke, globe at 2.0 parts per million
(ppm); asparagus at 2.0 ppm; fruit,
small, vine climbing subgroup, except
grape 13–07E at 0.35 ppm; vegetable,
foliage of legume, group 7 at 2.0 ppm;
vegetable, leafy, except brassica, group 4
at 3.0 ppm; vegetable, leaves of root and
tuber, group 2 at 2.0 ppm; and
watercress at 2.0 ppm. That notice
referenced a summary of the petition
prepared by Valent U.S.A. Corporation,
the registrant, on behalf of IR-4 which
is available to the public in the docket,
https://www.regulations.gov. There were
no comments received in response to
the notice of filing.
III. Aggregate Risk Assessment and
Determination of Safety
Section 408(b)(2)(A)(i) of FFDCA
allows EPA to establish a tolerance (the
legal limit for a pesticide chemical
residue in or on a food) only if EPA
determines that the tolerance is ‘‘safe.’’
Section 408(b)(2)(A)(ii) of FFDCA
defines ‘‘safe’’ to mean that ‘‘there is a
reasonable certainty that no harm will
result from aggregate exposure to the
pesticide chemical residue, including
all anticipated dietary exposures and all
other exposures for which there is
reliable information.’’ This includes
exposure through drinking water and in
residential settings, but does not include
occupational exposure. Section
408(b)(2)(C) of FFDCA requires EPA to
give special consideration to exposure
VerDate Nov<24>2008
14:04 Oct 27, 2009
Jkt 220001
of infants and children to the pesticide
chemical residue in establishing a
tolerance and to ‘‘ensure that there is a
reasonable certainty that no harm will
result to infants and children from
aggregate exposure to the pesticide
chemical residue....’’
Consistent with section 408(b)(2)(D)
of FFDCA, and the factors specified in
section 408(b)(2)(D) of FFDCA, EPA has
reviewed the available scientific data
and other relevant information in
support of this action. EPA has
sufficient data to assess the hazards of
and to make a determination on
aggregate exposure for the petitioned-for
tolerances for residues of pyriproxyfen
in or on vegetable, leaves of root and
tuber, group 2 at 2.0 ppm; vegetable,
leafy, except brassica, group 4 at 3.0
ppm; vegetable, foliage of legume, group
7 at 2.0 ppm; artichoke, globe at 2.0
ppm; asparagus at 2.0 ppm; watercress
at 2.0 ppm; and small fruit vine
climbing subgroup, except grape 13–07E
at 0.35 ppm ppm. EPA’s assessment of
exposures and risks associated with
establishing tolerances 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.
Pyriproxyfen is not a dermal sensitizer.
No significant systemic toxicity was
observed in either the 21–day dermal
toxicity study in rats or the 28–day
inhalation toxicity study in rats.
Subchronic and chronic toxicity studies
in mice, rats and dogs indicate that the
liver and kidney are the principal target
organs with slight anemia occurring in
the rodent species. There was no
evidence of increased susceptibility to
rat and rabbit fetuses in prenatal
developmental toxicity studies or to rat
offspring in the 2–generation rat
reproduction study. No evidence of
developmental toxicity was seen in
special studies that evaluated
pyriproxyfen toxicity following
perinatal and prenatal exposure in rats.
There was no evidence of
carcinogenicity in either a 78–week
mouse feeding study or in the 2–year rat
chronic/carcinogenicity study.
Pyriproxyfen is classified as a ‘‘Group
E’’ chemical - no evidence of
carcinogenicity to humans.
Pyriproxyfen is negative for mutagenic
activity in a battery of mutagenicity
PO 00000
Frm 00024
Fmt 4700
Sfmt 4700
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-observedadverse-effect-level (NOAEL) and the
lowest-observed-adverse-effect-level
(LOAEL) from the toxicity studies can
be found at https://www.regulations.gov
in docket ID number EPA–HQ–OPP–
2009–0018 on pages 34–36 of the
document titled ‘‘Pyriproxyfen. Human
Health Risk Assessment for the
Proposed Use of Pyriproxyfen in/on
Vegetables, Leaves of Root and Tuber,
Group 2; Vegetables, Leafy, Except
Brassica, Group 4; Vegetable, Foliage of
Legume, Group 7; Fruit, Small, Vine
Climbing, Except Grape, Subgroup 13–
07E; Artichoke, Globe; Asparagus; and
Watercress Commodities.’’
B. Toxicological Endpoints
For hazards that have a threshold
below which there is no appreciable
risk, a toxicological point of departure
(POD) is identified as the basis for
derivation of reference values for risk
assessment. The POD may be defined as
the highest dose at which no adverse
effects are observed (the NOAEL) in the
toxicology study identified as
appropriate for use in risk assessment.
However, if a NOAEL cannot be
determined, the lowest dose at which
adverse effects of concern are identified
(the LOAEL) or a Benchmark Dose
(BMD) approach is sometimes used for
risk assessment. Uncertainty/safety
factors (UFs) are used in conjunction
with the POD to take into account
uncertainties inherent in the
extrapolation from laboratory animal
data to humans and in the variations in
sensitivity among members of the
human population as well as other
unknowns. Safety is assessed for acute
and chronic dietary risks by comparing
aggregate food and water exposure to
the pesticide to the acute population
adjusted dose (aPAD) and chronic
population adjusted dose (cPAD). The
aPAD and cPAD are calculated by
dividing the POD by all applicable UFs.
Aggregate short-term, intermediate-term,
and chronic-term risks are evaluated by
comparing food, water, and residential
exposure to the POD to ensure that the
margin of exposure (MOE) called for by
the product of all applicable UFs is not
exceeded. This latter value is referred to
as the Level of Concern (LOC).
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 greater than that expected
in a lifetime. For more information on
E:\FR\FM\28OCR1.SGM
28OCR1
Federal Register / Vol. 74, No. 207 / Wednesday, October 28, 2009 / Rules and Regulations
erowe on DSK5CLS3C1PROD with RULES
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 can be found at
https://www.regulations.gov in docket ID
number EPA–HQ–OPP–2009–0018 on
pages 16–18 of the document titled
‘‘Pyriproxyfen. Human Health Risk
Assessment for the Proposed Use of
Pyriproxyfen in/on Vegetables, Leaves
of Root and Tuber, Group 2; Vegetables,
Leafy, Except Brassica, Group 4;
Vegetable, Foliage of Legume, Group 7;
Fruit, Small, Vine Climbing, Except
Grape, Subgroup 13–07E; Artichoke,
Globe; Asparagus; and Watercress
Commodities.’’
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; 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 performed an unrefined
chronic analysis which assumed 100%
crop treated (CT), default processing
factors, and tolerance level residues for
all commodities.
iii. Cancer. Based on the absence of
evidence of carcinogenicity in two
adequate rodent carcinogenicity studies,
EPA has classified pyriproxyfen as ‘‘not
likely to be carcinogenic to humans.’’
Therefore, a quantitative exposure
assessment to evaluate cancer risk is
unnecessary.
iv. Anticipated residue and percent
crop treated (PCT) information. As
noted above in Unit III.C.1.ii., EPA did
not use anticipated residue and/or PCT
information in the dietary assessment
for pyriproxyfen. Tolerance level
VerDate Nov<24>2008
14:04 Oct 27, 2009
Jkt 220001
residues and/or 100% CT were assumed
for all food commodities.
2. Dietary exposure from drinking
water. The Agency used screening level
water exposure models in the dietary
exposure analysis and risk assessment
for 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 Pesticide Root Zone
Model/Exposure Analysis Modeling
System (PRZM/EXAMS) and Screening
Concentration in Ground Water (SCIGROW) models, the estimated drinking
water concentrations (EDWCs) of
pyriproxyfen for chronic exposures for
non-cancer assessments are estimated to
be 0.52 parts per billion (ppb) for
surface water and 0.0022 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 0.52 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 the active ingredient
in many registered residential products
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). Only a post-application
residential assessment was conducted as
the Agency did not select any short-term
dermal or inhalation endpoints.
Toddlers are anticipated to have the
highest exposures from treated home
environments and pets due to typical
hand-to-mouth behavior. EPA assessed
residential exposure using the following
assumptions:
• Short-term, intermediate-term, and
long-term toddler hand-to-mouth
exposures (consisting of petting treated
animals and touching treated carpets/
flooring).
• Long-term dermal exposures for
products with anticipated efficacy more
PO 00000
Frm 00025
Fmt 4700
Sfmt 4700
55465
than 6 months (carpet powders and pet
collars).
• Combined treatment toddler
exposure scenarios as a result of
treatments to the home environment
and the pet in the same period (such as
carpet powder and pet shampoo
treatments). Episodic ingestion of
granules by toddlers is anticipated, but
an assessment for this scenario is not
included, since an acute dietary
endpoint was not selected.
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 website 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 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.
E:\FR\FM\28OCR1.SGM
28OCR1
erowe on DSK5CLS3C1PROD with RULES
55466
Federal Register / Vol. 74, No. 207 / Wednesday, October 28, 2009 / Rules and Regulations
3. Conclusion. EPA has determined
that reliable data show that it would be
safe for infants and children to reduce
the FQPA SF to 1X. That decision is
based on the following findings:
i. The toxicity database for
pyriproxyfen is complete except for
acute and subchronic neurotoxicity
studies and immunotoxicity testing.
Recent changes to 40 CFR part 158 make
these studies (OPPTS Guideline
870.7800) required for pesticide
registration; however, the available data
for pyriproxyfen do not show potential
for neurotoxicity or immunotoxicity.
Although neurotoxicity studies have not
yet been submitted, there is no evidence
of neurotoxicity in any study in the
toxicity database for pyriproxyfen.
Similarly, although the database
contains no specific immunotoxicity
studies, no evidence of immunotoxicity
was found in existing studies. EPA does
not believe that conducting
immunotoxicity testing will result in a
NOAEL less than the chronic
Referenced Dose (cRfD) NOAEL of 35.1
milligrams/kilogram body weight/day
(mg/kg bw/day) already established for
pyriproxyfen or that acute or subchronic
neurotoxicity studies would affect
selection of the acute Referenced Dose
(aRfD) or cRfD. Accordingly, EPA
concludes that an additional factor for
database uncertainties is not needed to
account for potential immunotoxicity or
neurotoxicity.
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 (UF) to
account for neurotoxicity.
iii. There is no evidence that
pyriproxyfen results in increased
susceptibility in utero in 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% CT and
tolerance-level residues. Conservative
ground water and surface water
modeling estimates were used.
Similarly, conservative Residential
Standard Operating Procedues (SOPs)
were used to assess post-application
exposure to 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 pesticide exposures are safe by
VerDate Nov<24>2008
14:04 Oct 27, 2009
Jkt 220001
comparing aggregate exposure estimates
to the aPAD and cPAD. The aPAD and
cPAD represent the highest safe
exposures, taking into account all
appropriate SFs. EPA calculates the
aPAD and cPAD by dividing the POD by
all applicable UFs. For linear cancer
risks, EPA calculates the probability of
additional cancer cases given the
estimated aggregate exposure. Shortterm, intermediate-term, and chronicterm risks are evaluated by comparing
the estimated aggregate food, water, and
residential exposure to the POD to
ensure that the MOE called for by the
product of all applicable UFs is not
exceeded.
1. Acute risk. An acute aggregate risk
assessment takes into account exposure
estimates from acute 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 10% of
the cPAD for children 1 to 2 years old,
the population group receiving the
greatest exposure. A long-term postapplication residential assessment was
performed. Toddlers 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
MOEs range from 580 to 4,500. For
pyriproxifen, EPA would be concerned
if the MOE was below 100.
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 aggregated result
in aggregate MOEs of 1,200 for children
1 to 2 years old, the population group
receiving the greatest exposure, and
therefore is not a concern.
4. Intermediate-term risk.
Intermediate-term aggregate exposure
takes into account intermediate-term
residential exposure plus chronic
PO 00000
Frm 00026
Fmt 4700
Sfmt 4700
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 to pyriproxyfen through food
and water with intermediate-term
exposures for pyriproxyfen.
Using the exposure assumptions
described in this unit for intermediateterm exposures, EPA has concluded that
the combined intermediate-term food,
water, and residential exposures
aggregated result in aggregate MOEs of
430 for children 1 to 2 years old, the
population group receiving the greatest
exposure, and therefore is not a concern.
5. Aggregate cancer risk for U.S.
population. Pyriproxyfen is classified as
a ‘‘Group E’’ chemical (negative for
carcinogenicity in humans). This
classification is based on the lack of
evidence of carcinogenicity in mice and
rats. EPA does not expect pyriproxyfen
to pose a cancer risk.
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/nitrogenphosphorous detector; 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; e-mail address:
residuemethods@epa.gov.
B. International Residue Limits
There are currently no established
Codex maximum residue limits for
pyriproxyfen.
V. Conclusion
Therefore, tolerances are established
for residues of pyriproxyfen in or on
artichoke, globe at 2.0 ppm; asparagus at
2.0 ppm; fruit, small, vine climbing
subgroup, except grape 13–07E at 0.35
ppm; vegetable, foliage of legume, group
7 at 2.0 ppm; vegetable, leafy, except
brassica, group 4 at 3.0 ppm; vegetable,
leaves of root and tuber, group 2 at 2.0
ppm; and watercress at 2.0 ppm.
E:\FR\FM\28OCR1.SGM
28OCR1
erowe on DSK5CLS3C1PROD with RULES
Federal Register / Vol. 74, No. 207 / Wednesday, October 28, 2009 / Rules and Regulations
VI. Statutory and Executive Order
Reviews
This final rule establishes tolerances
under section 408(d) of FFDCA in
response to a petition submitted to the
Agency. The Office of Management and
Budget (OMB) has exempted these types
of actions from review under Executive
Order 12866, entitled Regulatory
Planning and Review (58 FR 51735,
October 4, 1993). Because this final rule
has been exempted from review under
Executive Order 12866, this final rule is
not subject to Executive Order 13211,
entitled Actions Concerning Regulations
That Significantly Affect Energy Supply,
Distribution, or Use (66 FR 28355, May
22, 2001) or Executive Order 13045,
entitled Protection of Children from
Environmental Health Risks and Safety
Risks (62 FR 19885, April 23, 1997).
This final rule does not contain any
information collections subject to OMB
approval under the Paperwork
Reduction Act (PRA), 44 U.S.C. 3501 et
seq., nor does it require any special
considerations under Executive Order
12898, entitled Federal Actions to
Address Environmental Justice in
Minority Populations and Low-Income
Populations (59 FR 7629, February 16,
1994).
Since tolerances and exemptions that
are established on the basis of a petition
under section 408(d) of FFDCA, such as
the tolerance in this final rule, do not
require the issuance of a proposed rule,
the requirements of the Regulatory
Flexibility Act (RFA) (5 U.S.C. 601 et
seq.) do not apply.
This final rule directly regulates
growers, food processors, food handlers,
and food retailers, not States or tribes,
nor does this action alter the
relationships or distribution of power
and responsibilities established by
Congress in the preemption provisions
of section 408(n)(4) of FFDCA. As such,
the Agency has determined that this
action will not have a substantial direct
effect on States or tribal governments,
on the relationship between the national
government and the States or tribal
governments, or on the distribution of
power and responsibilities among the
various levels of government or between
the Federal Government and Indian
tribes. Thus, the Agency has determined
that Executive Order 13132, entitled
Federalism (64 FR 43255, August 10,
1999) and Executive Order 13175,
entitled Consultation and Coordination
with Indian Tribal Governments (65 FR
67249, November 9, 2000) do not apply
to this final rule. In addition, this final
rule does not impose any enforceable
duty or contain any unfunded mandate
as described under Title II of the
VerDate Nov<24>2008
14:04 Oct 27, 2009
Jkt 220001
Unfunded Mandates Reform Act of 1995
(UMRA) (Public Law 104–4).
This action does not involve any
technical standards that would require
Agency consideration of voluntary
consensus standards pursuant to section
12(d) of the National Technology
Transfer and Advancement Act of 1995
(NTTAA), Public Law 104–113, section
12(d) (15 U.S.C. 272 note).
VII. Congressional Review Act
The Congressional Review Act, 5
U.S.C. 801 et seq., generally provides
that before a rule may take effect, the
agency promulgating the rule must
submit a rule report to each House of
the Congress and to the Comptroller
General of the United States. EPA will
submit a report containing this rule and
other required information to the U.S.
Senate, the U.S. House of
Representatives, and the Comptroller
General of the United States prior to
publication of this final rule in the
Federal Register. This final rule is not
a ‘‘major rule’’ as defined by 5 U.S.C.
804(2).
List of Subjects in 40 CFR Part 180
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
Dated: October 16, 2009.
Daniel J. Rosenblatt,
Acting Director, Registration Division, Office
of Pesticide Programs.
Commodity
55467
Parts per million
*
*
*
Vegetable, leafy, except
Brassica, group 4 ........
Vegetable, leaves of root
and tuber, group 2 ......
*
*
*
Watercress ......................
*
*
*
*
*
3.0
2.0
*
*
*
*
2.0
(b) Section 18 emergency exemptions.
[Reserved]
*
*
*
*
*
[FR Doc. E9–25689 Filed 10–27–09; 8:45 am]
BILLING CODE 6560–50–S
DEPARTMENT OF THE INTERIOR
Fish and Wildlife Service
50 CFR Part 20
[FWS–R9–MB–2009–0124]
[91200–1231–9BPP–L2]
RIN 1018–AW31
Migratory Bird Hunting; Migratory Bird
Hunting Regulations on Certain
Federal Indian Reservations and
Ceded Lands for the 2009–10 Late
Season
AGENCY: Fish and Wildlife Service,
Interior.
ACTION: Final rule; correcting
amendments.
SUMMARY: On September 2 and 25, 2009,
we, the U.S. Fish and Wildlife Service
(Service), published two final rules that
established special early- and lateseason migratory bird hunting
PART 180—[AMENDED]
regulations for certain tribes on Federal
■ 1. The authority citation for part 180
Indian reservations, off-reservation trust
continues to read as follows:
lands, and ceded lands. In error, the
Authority: 21 U.S.C. 321(q), 346a and 371.
second of these rules omitted from the
regulatory text pertaining to late-season
■ 2. Section 180.510 is amended by
hunting by the White Mountain Apache
alphabetically adding the following
Tribe the dates and bag limits for duck
commodities to the table in paragraph
and Canada goose. This document
(a)(1) and by revising paragraph (b) to
corrects those errors.
read as follows:
DATES: This rule takes effect on October
§ 180.510 Pyriproxyfen; tolerances for
28, 2009.
residues
FOR FURTHER INFORMATION CONTACT: Ron
(a) * * *(1) * * *
W. Kokel, Division of Migratory Bird
Management, U.S. Fish and Wildlife
Commodity
Parts per million
Service (703/358–1967), or Tina
Chouinard, Division of Migratory Bird
*
*
*
*
*
Artichoke, globe ..............
2.0 Management, U.S. Fish and Wildlife
Asparagus .......................
2.0 Service (731/432–0981).
*
*
*
*
*
SUPPLEMENTARY INFORMATION: On
Fruit, small, vine climbSeptember 2 and 25, 2009, we published
ing, except grape, subgroup 13–07E .............
0.35 final rules that established special earlyand late-season migratory bird hunting
*
*
*
*
*
regulations for certain tribes on Federal
Vegetable, foliage of legume, group 7 ...............
2.0 Indian reservations, off-reservation trust
Therefore, 40 CFR chapter I is
amended as follows:
■
PO 00000
Frm 00027
Fmt 4700
Sfmt 4700
E:\FR\FM\28OCR1.SGM
28OCR1
Agencies
[Federal Register Volume 74, Number 207 (Wednesday, October 28, 2009)]
[Rules and Regulations]
[Pages 55463-55467]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E9-25689]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2009-0018; FRL-8795-3]
Pyriproxyfen; Pesticide Tolerances
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes tolerances for residues of
pyriproxyfen in or on artichoke, globe; asparagus; fruit, small, vine
climbing subgroup, except grape 13-07E; vegetable, foliage of legume,
group 7; vegetable, leafy, except brassica, group 4; vegetable, leaves
of root and tuber, group 2; and watercress. It also removes the section
18 time-limited tolerances on succulent bean, celery and strawberry
since these tolerances have expired. Interregional Research Project
Number 4 (IR-4) requested these tolerances under the Federal Food,
Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective October 28, 2009. Objections and
requests for hearings must be received on or before December 28, 2009,
and must be filed in accordance with the instructions provided in 40
CFR part 178 (see also Unit I.C. of the SUPPLEMENTARY INFORMATION).
ADDRESSES: EPA has established a docket for this action under docket
identification (ID) number EPA-HQ-OPP-2009-0018. All documents in the
docket are listed in the docket index available at https://www.regulations.gov. Although listed in the index, some information is
not publicly available, e.g., Confidential Business Information (CBI)
or other information whose disclosure is restricted by statute. Certain
other material, such as copyrighted material, is not placed on the
Internet and will be publicly available only in hard copy form.
Publicly available docket materials are available in the electronic
docket at https://www.regulations.gov, or, if only available in hard
copy, at the OPP Regulatory Public Docket in Rm. S-4400, One Potomac
Yard (South Bldg.), 2777 S. Crystal Dr., Arlington, VA. The Docket
Facility is open from 8:30 a.m. to 4 p.m., Monday through Friday,
excluding legal holidays. The Docket Facility telephone number is (703)
305-5805.
FOR FURTHER INFORMATION CONTACT: Barbara Madden, Registration Division,
Office of Pesticide Programs, Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington, DC 20460-0001; telephone number:
(703) 305-6463; e-mail address: madden.barbara@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
A. Does this Action Apply to Me?
You may be potentially affected by this action if you are an
agricultural producer, food manufacturer, or pesticide manufacturer.
Potentially affected entities may include, but are not limited to those
engaged in the following activities:
Crop production (NAICS code 111).
Animal production (NAICS code 112).
Food manufacturing (NAICS code 311).
Pesticide manufacturing (NAICS code 32532).
This listing is not intended to be exhaustive, but rather to
provide a guide for readers regarding entities likely to be affected by
this action. Other types of entities not listed in this unit could also
be affected. The North American Industrial Classification System
(NAICS) codes have been provided to assist you and others in
determining whether this action might apply to certain entities. If you
have any questions regarding the applicability of this action to a
particular entity, consult the person listed under FOR FURTHER
INFORMATION CONTACT.
B. How Can I Access Electronic Copies of this Document?
In addition to accessing electronically available documents at
https://www.regulations.gov, you may access this Federal Register
document electronically through the EPA Internet under the ``Federal
Register'' listings at https://www.epa.gov/fedrgstr. You may also access
a frequently updated electronic version of EPA's tolerance regulations
at 40 CFR part 180 through the Government Printing Office's e-CFR cite
at https://www.gpoaccess.gov/ecfr. To access the OPPTS Harmonized Test
Guidelines referenced in this document, go directly to the guidelines
at https://www.epa.gov/oppts and select ``Test Methods & Guidelines'' on
the left side navigation menu.
C. Can I File an Objection or Hearing Request?
Under section 408(g) of FFDCA, 21 U.S.C. 346a, any person may file
an objection to any aspect of this regulation and may also request a
hearing on those objections. You must file your objection or request a
hearing on this regulation in accordance with the instructions provided
in 40 CFR part 178. To ensure proper receipt by EPA, you must identify
docket ID number EPA-HQ-OPP-2009-0018 in the subject line on the first
page of your submission. All requests must be in writing, and must be
mailed or delivered to the Hearing Clerk as required by 40 CFR part 178
on or before December 28, 2009.
In addition to filing an objection or hearing request with the
Hearing Clerk as described in 40 CFR part 178, please submit a copy of
the filing that does not contain any CBI for inclusion in the public
docket that is described in ADDRESSES. Information not marked
confidential pursuant to 40 CFR part 2 may be disclosed publicly by EPA
without prior notice. Submit this copy, identified by docket ID number
EPA-HQ-OPP-2009-0018, by one of the following methods:
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the on-line instructions for submitting comments.
[[Page 55464]]
Mail: Office of Pesticide Programs (OPP) Regulatory Public
Docket (7502P), Environmental Protection Agency, 1200 Pennsylvania
Ave., NW., Washington, DC 20460-0001.
Delivery: OPP Regulatory Public Docket (7502P),
Environmental Protection Agency, Rm. S-4400, One Potomac Yard (South
Bldg.), 2777 S. Crystal Dr., Arlington, VA. Deliveries are only
accepted during the Docket Facility's normal hours of operation (8:30
a.m. to 4 p.m., Monday through Friday, excluding legal holidays).
Special arrangements should be made for deliveries of boxed
information. The Docket Facility telephone number is (703) 305-5805.
II. Petition for Tolerance
In the Federal Register of April 8, 2009 (74 FR 15971) (FRL-8407-
4), EPA issued a notice pursuant to section 408(d)(3) of FFDCA, 21
U.S.C. 346a(d)(3), announcing the filing of a pesticide petition (PP
8E7492) 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 in or on artichoke, globe at 2.0 parts per million (ppm);
asparagus at 2.0 ppm; fruit, small, vine climbing subgroup, except
grape 13-07E at 0.35 ppm; vegetable, foliage of legume, group 7 at 2.0
ppm; vegetable, leafy, except brassica, group 4 at 3.0 ppm; vegetable,
leaves of root and tuber, group 2 at 2.0 ppm; and watercress at 2.0
ppm. That notice referenced a summary of the petition prepared by
Valent U.S.A. Corporation, the registrant, on behalf of IR-4 which is
available to the public in the docket, https://www.regulations.gov.
There were no comments received in response to the notice of filing.
III. Aggregate Risk Assessment and Determination of Safety
Section 408(b)(2)(A)(i) of FFDCA allows EPA to establish a
tolerance (the legal limit for a pesticide chemical residue in or on a
food) only if EPA determines that the tolerance is ``safe.'' Section
408(b)(2)(A)(ii) of FFDCA defines ``safe'' to mean that ``there is a
reasonable certainty that no harm will result from aggregate exposure
to the pesticide chemical residue, including all anticipated dietary
exposures and all other exposures for which there is reliable
information.'' This includes exposure through drinking water and in
residential settings, but does not include occupational exposure.
Section 408(b)(2)(C) of FFDCA requires EPA to give special
consideration to exposure of infants and children to the pesticide
chemical residue in establishing a tolerance and to ``ensure that there
is a reasonable certainty that no harm will result to infants and
children from aggregate exposure to the pesticide chemical
residue....''
Consistent with section 408(b)(2)(D) of FFDCA, and the factors
specified in section 408(b)(2)(D) of FFDCA, EPA has reviewed the
available scientific data and other relevant information in support of
this action. EPA has sufficient data to assess the hazards of and to
make a determination on aggregate exposure for the petitioned-for
tolerances for residues of pyriproxyfen in or on vegetable, leaves of
root and tuber, group 2 at 2.0 ppm; vegetable, leafy, except brassica,
group 4 at 3.0 ppm; vegetable, foliage of legume, group 7 at 2.0 ppm;
artichoke, globe at 2.0 ppm; asparagus at 2.0 ppm; watercress at 2.0
ppm; and small fruit vine climbing subgroup, except grape 13-07E at
0.35 ppm ppm. EPA's assessment of exposures and risks associated with
establishing tolerances 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. Pyriproxyfen is not a dermal
sensitizer. No significant systemic toxicity was observed in either the
21-day dermal toxicity study in rats or the 28-day inhalation toxicity
study in rats. Subchronic and chronic toxicity studies in mice, rats
and dogs indicate that the liver and kidney are the principal target
organs with slight anemia occurring in the rodent species. There was no
evidence of increased susceptibility to rat and rabbit fetuses in
prenatal developmental toxicity studies or to rat offspring in the 2-
generation rat reproduction study. No evidence of developmental
toxicity was seen in special studies that evaluated pyriproxyfen
toxicity following perinatal and prenatal exposure in rats. There was
no evidence of carcinogenicity in either a 78-week mouse feeding study
or in the 2-year rat chronic/carcinogenicity study. Pyriproxyfen is
classified as a ``Group E'' chemical - no evidence of carcinogenicity
to humans. 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 in docket ID number EPA-HQ-OPP-2009-0018 on pages
34-36 of the document titled ``Pyriproxyfen. Human Health Risk
Assessment for the Proposed Use of Pyriproxyfen in/on Vegetables,
Leaves of Root and Tuber, Group 2; Vegetables, Leafy, Except Brassica,
Group 4; Vegetable, Foliage of Legume, Group 7; Fruit, Small, Vine
Climbing, Except Grape, Subgroup 13-07E; Artichoke, Globe; Asparagus;
and Watercress Commodities.''
B. Toxicological Endpoints
For hazards that have a threshold below which there is no
appreciable risk, a toxicological point of departure (POD) is
identified as the basis for derivation of reference values for risk
assessment. The POD may be defined as the highest dose at which no
adverse effects are observed (the NOAEL) in the toxicology study
identified as appropriate for use in risk assessment. However, if a
NOAEL cannot be determined, the lowest dose at which adverse effects of
concern are identified (the LOAEL) or a Benchmark Dose (BMD) approach
is sometimes used for risk assessment. Uncertainty/safety factors (UFs)
are used in conjunction with the POD to take into account uncertainties
inherent in the extrapolation from laboratory animal data to humans and
in the variations in sensitivity among members of the human population
as well as other unknowns. Safety is assessed for acute and chronic
dietary risks by comparing aggregate food and water exposure to the
pesticide to the acute population adjusted dose (aPAD) and chronic
population adjusted dose (cPAD). The aPAD and cPAD are calculated by
dividing the POD by all applicable UFs. Aggregate short-term,
intermediate-term, and chronic-term risks are evaluated by comparing
food, water, and residential exposure to the POD to ensure that the
margin of exposure (MOE) called for by the product of all applicable
UFs is not exceeded. This latter value is referred to as the Level of
Concern (LOC).
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
greater than that expected in a lifetime. For more information on
[[Page 55465]]
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 can be found at https://www.regulations.gov in
docket ID number EPA-HQ-OPP-2009-0018 on pages 16-18 of the document
titled ``Pyriproxyfen. Human Health Risk Assessment for the Proposed
Use of Pyriproxyfen in/on Vegetables, Leaves of Root and Tuber, Group
2; Vegetables, Leafy, Except Brassica, Group 4; Vegetable, Foliage of
Legume, Group 7; Fruit, Small, Vine Climbing, Except Grape, Subgroup
13-07E; Artichoke, Globe; Asparagus; and Watercress Commodities.''
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; 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
performed an unrefined chronic analysis which assumed 100% crop treated
(CT), default processing factors, and tolerance level residues for all
commodities.
iii. Cancer. Based on the absence of evidence of carcinogenicity in
two adequate rodent carcinogenicity studies, EPA has classified
pyriproxyfen as ``not likely to be carcinogenic to humans.'' Therefore,
a quantitative exposure assessment to evaluate cancer risk is
unnecessary.
iv. Anticipated residue and percent crop treated (PCT) information.
As noted above in Unit III.C.1.ii., EPA did not use anticipated residue
and/or PCT information in the dietary assessment for pyriproxyfen.
Tolerance level residues and/or 100% CT were assumed for all food
commodities.
2. Dietary exposure from drinking water. The Agency used screening
level water exposure models in the dietary exposure analysis and risk
assessment for 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 Pesticide Root Zone Model/Exposure Analysis Modeling
System (PRZM/EXAMS) and Screening Concentration in Ground Water (SCI-
GROW) models, the estimated drinking water concentrations (EDWCs) of
pyriproxyfen for chronic exposures for non-cancer assessments are
estimated to be 0.52 parts per billion (ppb) for surface water and
0.0022 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 0.52 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 the active ingredient in many registered
residential products 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). Only a post-application residential assessment
was conducted as the Agency did not select any short-term dermal or
inhalation endpoints. Toddlers are anticipated to have the highest
exposures from treated home environments and pets due to typical hand-
to-mouth behavior. EPA assessed residential exposure using the
following assumptions:
Short-term, intermediate-term, and long-term toddler hand-
to-mouth exposures (consisting of petting treated animals and touching
treated carpets/flooring).
Long-term dermal exposures for products with anticipated
efficacy more than 6 months (carpet powders and pet collars).
Combined treatment toddler exposure scenarios as a result
of treatments to the home environment and the pet in the same period
(such as carpet powder and pet shampoo treatments). Episodic ingestion
of granules by toddlers is anticipated, but an assessment for this
scenario is not included, since an acute dietary endpoint was not
selected.
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 website 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
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.
[[Page 55466]]
3. Conclusion. EPA has determined that reliable data show that it
would be safe for infants and children to reduce the FQPA SF to 1X.
That decision is based on the following findings:
i. The toxicity database for pyriproxyfen is complete except for
acute and subchronic neurotoxicity studies and immunotoxicity testing.
Recent changes to 40 CFR part 158 make these studies (OPPTS Guideline
870.7800) required for pesticide registration; however, the available
data for pyriproxyfen do not show potential for neurotoxicity or
immunotoxicity. Although neurotoxicity studies have not yet been
submitted, there is no evidence of neurotoxicity in any study in the
toxicity database for pyriproxyfen. Similarly, although the database
contains no specific immunotoxicity studies, no evidence of
immunotoxicity was found in existing studies. EPA does not believe that
conducting immunotoxicity testing will result in a NOAEL less than the
chronic Referenced Dose (cRfD) NOAEL of 35.1 milligrams/kilogram body
weight/day (mg/kg bw/day) already established for pyriproxyfen or that
acute or subchronic neurotoxicity studies would affect selection of the
acute Referenced Dose (aRfD) or cRfD. Accordingly, EPA concludes that
an additional factor for database uncertainties is not needed to
account for potential immunotoxicity or neurotoxicity.
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 (UF) to account for neurotoxicity.
iii. There is no evidence that pyriproxyfen results in increased
susceptibility in utero in 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% CT and tolerance-level residues. Conservative ground water and
surface water modeling estimates were used. Similarly, conservative
Residential Standard Operating Procedues (SOPs) were used to assess
post-application exposure to 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 pesticide exposures are
safe by comparing aggregate exposure estimates to the aPAD and cPAD.
The aPAD and cPAD represent the highest safe exposures, taking into
account all appropriate SFs. EPA calculates the aPAD and cPAD by
dividing the POD by all applicable UFs. For linear cancer risks, EPA
calculates the probability of additional cancer cases given the
estimated aggregate exposure. Short-term, intermediate-term, and
chronic-term risks are evaluated by comparing the estimated aggregate
food, water, and residential exposure to the POD to ensure that the MOE
called for by the product of all applicable UFs is not exceeded.
1. Acute risk. An acute aggregate risk assessment takes into
account exposure estimates from acute 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 10% of the cPAD for
children 1 to 2 years old, the population group receiving the greatest
exposure. A long-term post-application residential assessment was
performed. Toddlers 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 MOEs
range from 580 to 4,500. For pyriproxifen, EPA would be concerned if
the MOE was below 100.
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 aggregated result in aggregate MOEs of 1,200
for children 1 to 2 years old, the population group receiving the
greatest exposure, and therefore is not a 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 to pyriproxyfen
through food and water with intermediate-term exposures for
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 aggregated
result in aggregate MOEs of 430 for children 1 to 2 years old, the
population group receiving the greatest exposure, and therefore is not
a concern.
5. Aggregate cancer risk for U.S. population. Pyriproxyfen is
classified as a ``Group E'' chemical (negative for carcinogenicity in
humans). This classification is based on the lack of evidence of
carcinogenicity in mice and rats. EPA does not expect pyriproxyfen to
pose a cancer risk.
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/nitrogen-
phosphorous detector; 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; e-mail address:
residuemethods@epa.gov.
B. International Residue Limits
There are currently no established Codex maximum residue limits for
pyriproxyfen.
V. Conclusion
Therefore, tolerances are established for residues of pyriproxyfen
in or on artichoke, globe at 2.0 ppm; asparagus at 2.0 ppm; fruit,
small, vine climbing subgroup, except grape 13-07E at 0.35 ppm;
vegetable, foliage of legume, group 7 at 2.0 ppm; vegetable, leafy,
except brassica, group 4 at 3.0 ppm; vegetable, leaves of root and
tuber, group 2 at 2.0 ppm; and watercress at 2.0 ppm.
[[Page 55467]]
VI. Statutory and Executive Order Reviews
This final rule establishes tolerances under section 408(d) of
FFDCA in response to a petition submitted to the Agency. The Office of
Management and Budget (OMB) has exempted these types of actions from
review under Executive Order 12866, entitled Regulatory Planning and
Review (58 FR 51735, October 4, 1993). Because this final rule has been
exempted from review under Executive Order 12866, this final rule is
not subject to Executive Order 13211, entitled Actions Concerning
Regulations That Significantly Affect Energy Supply, Distribution, or
Use (66 FR 28355, May 22, 2001) or Executive Order 13045, entitled
Protection of Children from Environmental Health Risks and Safety Risks
(62 FR 19885, April 23, 1997). This final rule does not contain any
information collections subject to OMB approval under the Paperwork
Reduction Act (PRA), 44 U.S.C. 3501 et seq., nor does it require any
special considerations under Executive Order 12898, entitled Federal
Actions to Address Environmental Justice in Minority Populations and
Low-Income Populations (59 FR 7629, February 16, 1994).
Since tolerances and exemptions that are established on the basis
of a petition under section 408(d) of FFDCA, such as the tolerance in
this final rule, do not require the issuance of a proposed rule, the
requirements of the Regulatory Flexibility Act (RFA) (5 U.S.C. 601 et
seq.) do not apply.
This final rule directly regulates growers, food processors, food
handlers, and food retailers, not States or tribes, nor does this
action alter the relationships or distribution of power and
responsibilities established by Congress in the preemption provisions
of section 408(n)(4) of FFDCA. As such, the Agency has determined that
this action will not have a substantial direct effect on States or
tribal governments, on the relationship between the national government
and the States or tribal governments, or on the distribution of power
and responsibilities among the various levels of government or between
the Federal Government and Indian tribes. Thus, the Agency has
determined that Executive Order 13132, entitled Federalism (64 FR
43255, August 10, 1999) and Executive Order 13175, entitled
Consultation and Coordination with Indian Tribal Governments (65 FR
67249, November 9, 2000) do not apply to this final rule. In addition,
this final rule does not impose any enforceable duty or contain any
unfunded mandate as described under Title II of the Unfunded Mandates
Reform Act of 1995 (UMRA) (Public Law 104-4).
This action does not involve any technical standards that would
require Agency consideration of voluntary consensus standards pursuant
to section 12(d) of the National Technology Transfer and Advancement
Act of 1995 (NTTAA), Public Law 104-113, section 12(d) (15 U.S.C. 272
note).
VII. Congressional Review Act
The Congressional Review Act, 5 U.S.C. 801 et seq., generally
provides that before a rule may take effect, the agency promulgating
the rule must submit a rule report to each House of the Congress and to
the Comptroller General of the United States. EPA will submit a report
containing this rule and other required information to the U.S. Senate,
the U.S. House of Representatives, and the Comptroller General of the
United States prior to publication of this final rule in the Federal
Register. This final rule is not a ``major rule'' as defined by 5
U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection, Administrative practice and procedure,
Agricultural commodities, Pesticides and pests, Reporting and
recordkeeping requirements.
Dated: October 16, 2009.
Daniel J. Rosenblatt,
Acting Director, Registration Division, Office of Pesticide Programs.
0
Therefore, 40 CFR chapter I is amended as follows:
PART 180--[AMENDED]
0
1. The authority citation for part 180 continues to read as follows:
Authority: 21 U.S.C. 321(q), 346a and 371.
0
2. Section 180.510 is amended by alphabetically adding the following
commodities to the table in paragraph (a)(1) and by revising paragraph
(b) to read as follows:
Sec. 180.510 Pyriproxyfen; tolerances for residues
(a) * * *(1) * * *
------------------------------------------------------------------------
Commodity Parts per million
------------------------------------------------------------------------
* * * * *
Artichoke, globe..................................... 2.0
Asparagus............................................ 2.0
* * * * *
Fruit, small, vine climbing, except grape, subgroup 0.35
13-07E..............................................
* * * * *
Vegetable, foliage of legume, group 7................ 2.0
* * * * *
Vegetable, leafy, except Brassica, group 4........... 3.0
Vegetable, leaves of root and tuber, group 2......... 2.0
* * * * *
Watercress........................................... 2.0
* * * * *
------------------------------------------------------------------------
(b) Section 18 emergency exemptions. [Reserved]
* * * * *
[FR Doc. E9-25689 Filed 10-27-09; 8:45 am]
BILLING CODE 6560-50-S