Acequinocyl; Pesticide Tolerance, 17906-17910 [E8-6699]
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Federal Register / Vol. 73, No. 64 / Wednesday, April 2, 2008 / Rules and Regulations
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[FR Doc. E8–6825 Filed 4–1–08; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2006–0678; FRL–8356–6]
Acequinocyl; Pesticide Tolerance
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
SUMMARY: This regulation establishes
tolerances for combined residues of
acequinocyl and its metabolite, 2dodecyl-3-hydroxy-1, 4-naphthoquinone
(acequinocyl-OH) expressed as
acequinocyl equivalents in or on nut,
tree, group 14 and grape and removes
the separate tolerances established for
almond. Arysta LifeScience North
America Corporation requested these
tolerances under the Federal Food,
Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective April
2, 2008. Objections and requests for
hearings must be received on or before
June 2, 2008, and must be filed in
accordance with the instructions
provided in 40 CFR part 178 (see also
Unit I.C. of the SUPPLEMENTARY
INFORMATION).
EPA has established a
docket for this action under docket
identification (ID) number EPA–HQ–
OPP–2006–0678. To access the
electronic docket, go to https://
www.regulations.gov, select ‘‘Advanced
Search,’’ then ‘‘Docket Search.’’ Insert
the docket ID number where indicated
and select the ‘‘Submit’’ button. Follow
the instructions on the regulations.gov
website to view the docket index or
access available documents. All
documents in the docket are listed in
the docket index available in
regulations.gov. Although listed in the
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ADDRESSES:
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Type
Attainment.
Attainment.
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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:
Marilyn Mautz, Registration Division
(7505P), Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington,
DC 20460–0001; telephone number:
(703) 305–6785; e-mail address:
mautz.marilyn@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),
e.g., agricultural workers; greenhouse,
nursery, and floriculture workers;
farmers.
• Animal production (NAICS code
112), e.g., cattle ranchers and farmers,
dairy cattle farmers, livestock farmers.
• Food manufacturing (NAICS code
311), e.g., agricultural workers; farmers;
greenhouse, nursery, and floriculture
workers; ranchers; pesticide applicators.
• Pesticide manufacturing (NAICS
code 32532), e.g., agricultural workers;
commercial applicators; farmers;
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greenhouse, nursery, and floriculture
workers; residential users.
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 an electronic
copy of this Federal Register document
through the electronic docket 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 pilot
e-CFR site at https://www.gpoaccess.gov/
ecfr.
C. Can I File an Objection or Hearing
Request?
Under section 408(g) of FFDCA, any
person may file an objection to any
aspect of this regulation and may also
request a hearing on those objections.
You must file your objection or request
a hearing on this regulation in
accordance with the instructions
provided in 40 CFR part 178. To ensure
proper receipt by EPA, you must
identify docket ID number EPA–HQ–
OPP–2006–0678 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 June 2, 2008.
In addition to filing an objection or
hearing request with the Hearing Clerk
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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–2006–0678, by one of the
following methods:
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the on-line
instructions for submitting comments.
• Mail: Office of Pesticide Programs
(OPP) Regulatory Public Docket (7502P),
Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington,
DC 20460–0001.
• Delivery: OPP Regulatory Public
Docket (7502P), Environmental
Protection Agency, Rm. S–4400, One
Potomac Yard (South Bldg.), 2777 S.
Crystal Dr., Arlington, VA. Deliveries
are only accepted during the Docket’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 August 11,
2006 (71 FR 46223) (FRL–8085–8), 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 6F7040) by Arysta
LifeScience North America Corporation,
15401 Weston Pkwy., Suite 150, Cary,
NC 27513. The petition requested that
40 CFR 180.599 be amended by
establishing a tolerance for combined
residues of the insecticide acequinocyl
and its metabolite 2-dodecyl-3-hydroxy1,4-naphthoquinone (acequinocyl-OH)
expressed as acequinocyl equivalents in
or on tree nuts (crop group 14) at 0.02
parts per million (ppm). That notice
referenced a summary of the petition
prepared by Arysta LifeScience North
America Corporation, the registrant,
which is available to the public in the
docket, https://www.regulations.gov. A
comment was received on the notice of
filing. EPA’s response to the comment is
discussed in Unit IV.C. below. In the
Federal Register of January 23, 2008 (73
FR 3964) (FRL–8345–7), 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 7F7176) by Arysta
LifeScience North America Corporation.
The petition requested that 40 CFR
180.599 be amended by establishing a
tolerance for acequinocyl and its
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metabolite acequinocyl-OH expressed as
acequinocyl equivalents in or on grapes
at 7.0 parts per million (ppm), grape
juice at 0.05 ppm and raisins at 0.1
ppm. The proposed grape tolerance of
7.0 ppm was subsequently amended by
the petitioner to 1.0 ppm.
Based upon review of the data
supporting the petition, EPA has revised
the tolerances proposed for grape, grape
juice and raisin; and changed the
commodity definition for tree nuts (crop
group 14). The appropriate tolerance for
grape was calculated to be 1.6 ppm. The
grape processing data provided for grape
juice and raisins showed the combined
residues of acequinocyl and
acequinocyl-OH did not concentrate in
either of these commodities and, thus
separate tolerances are not required for
grape juice or raisins. The
recommended tolerance level for grape
was determined considering Agency
guidance (Guidance for Setting Pesticide
Tolerances Based on Field Trial Data).
The commodity definition for tree nuts
(crop group 14) has been changed to
nut, tree, group 14.
acequinocyl-OH expressed as
aceqinocyl equivalents on nut, tree,
group 14 and grape at 0.02 ppm and 1.6
ppm, respectively. EPA’s assessment of
exposures and risks associated with
establishing the tolerance follows.
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. . . .’’ These provisions
were added to FFDCA by the Food
Quality Protection Act (FQPA) of 1996.
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 the petitioned-for
tolerance for combined residues of
acequinocyl and its metabolite
B. Toxicological Endpoints
For hazards that have a threshold
below which there is no appreciable
risk, the toxicological level of concern
(LOC) is derived from the highest dose
at which the NOAEL are observed in the
toxicology study identified as
appropriate for use in risk assessment.
However, if a NOAEL cannot be
determined, the lowest dose at which
the LOAEL of concern are identified is
sometimes used for risk assessment.
Uncertainty/safety factors (UFs) are
used in conjunction with the level of
concern (LOC) 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 risks by comparing
aggregate exposure to the pesticide to
the acute population adjusted (aPAD)
dose and chronic population adjusted
dose (cPAD). The aPAD and cPAD are
calculated by dividing the LOC by all
applicable UFs. Short-term,
intermediate-term, and long-term risks
are evaluated by comparing aggregate
exposure to the LOC to ensure that the
margin of exposure (MOE) called for by
the product of all applicable UFs is not
exceeded.
For non-threshold risks, the Agency
assumes that any amount of exposure
will lead to some degree of risk and
estimates risk in terms of the probability
of occurrence of additional adverse
cases. Generally, cancer risks are
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A. Toxicological Profile
EPA has evaluated the available
toxicity data and considered its validity,
completeness, and reliability as well as
the relationship of the results of the
studies to human risk. EPA has also
considered available information
concerning the variability of the
sensitivities of major identifiable
subgroups of consumers, including
infants and children. Specific
information on the studies received and
the nature of the adverse effects caused
by acequinocyl as well as the noobserved-adverse-effect-level (NOAEL)
and the lowest-observed-adverse-effectlevel (LOAEL) from the toxicity studies
are discussed in the acequinocyl final
rule published in the Federal Register
of July 21, 2004 (69 FR 43525) (FRL–
7364–1).
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considered non-threshold. 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/fedrgstr/EPA-PEST/1997/
November/Day-26/p30948.htm.
A summary of the toxicological
endpoints for acequinocyl used for
human risk assessment can be found at
https://www.regulations.gov in the
document ‘‘Human Health Risk
Assessment for Use of Acequinocyl on
Grapes, the Tree Nut Crop Group, and
Residential Sites (Ornamentals)’’ on
pages 13 and 14 in docket ID number
EPA–HQ–OPP–2006–0678-0006.
C. Exposure Assessment
1. Dietary exposure from food and
feed uses. In evaluating dietary
exposure to acequinocyl, EPA
considered exposure under the
petitioned-for tolerances as well as all
existing acequinocyl tolerances in 40
CFR 180.599. EPA assessed dietary
exposures from acequinocyl 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 acequinocyl;
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 United States Department of
Agriculture (USDA) 1994–1996 and
1998; CSFII. As to residue levels in
food, EPA assumed all foods for which
there are tolerances were treated and
contain tolerance-level residues.
Anticipated residues were not used.
iii. Cancer. The Agency classified
acequinocyl as a ‘‘not likely
carcinogen’’. Therefore, an exposure
assessment for the purpose of estimating
cancer risk is unnecessary.
iv. Anticipated residue and PCT
information. The Agency did not use
anticipated residue estimates or PCT
information in the acequinocyl dietary
exposure assessment.
2. Dietary exposure from drinking
water. The Agency lacks sufficient
monitoring data to complete a
comprehensive dietary exposure
analysis and risk assessment for
acequinocyl in drinking water. Because
the Agency does not have
comprehensive monitoring data,
drinking water concentration estimates
are made by reliance on simulation or
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modeling taking into account data on
the environmental fate characteristics of
acequinocyl. 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) with the index
reservoir scenarios model, the estimated
drinking water concentrations (EDWCs)
of acequinocyl only and of the
combined residues of acequinocyl and
its metabolite (acequinocyl–OH) for
chronic exposures are estimated to be
2.73 and 0.37 parts per billion (ppb),
respectively for surface water. Based on
the Screening Concentration in Ground
Water (SCI-GROW) model, for chronic
ground water exposure, the EDWC value
for the combined residues of
acequinocyl and its metabolite
(acequinocyl–OH) is 0.0036 ppb.
Modeled estimates of drinking water
concentrations were directly entered
into the dietary exposure model. Acute
dietary risk assessments were not
conducted because an end point of
concern attributable to a single dose was
not identified. For chronic dietary risk
assessment, the water concentration
value of 2.73 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).
Acequinocyl is currently registered
for the following residential non-dietary
sites: Ornamental plants. EPA assessed
residential exposure using the following
assumptions: Exposure is considered to
be short term only, due to the infrequent
use patterns associated with homeowner
products; and individuals are wearing
shorts, short-sleeved shirts, socks, and
shoes. The estimates of exposure to
residential handlers are based on
surrogate data available from the
Outdoor Residential Exposure Task
Force (ORETF) and the Pesticide
Handlers Exposure Data (PHED)
(August, 1998). The residential exposure
assessed was exposure to adults from
residential application of acequinocyl.
Short-term inhalation and dermal
exposure estimates were generated for
residential adult handlers during the
mixing, loading and application of
acequinocyl in residential settings.
Based on the use pattern, no significant
post application exposure in residential
settings is anticipated.
4. Cumulative effects from substances
with a common mechanism of toxicity.
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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.’’
Unlike other pesticides for which EPA
has followed a cumulative risk approach
based on a common mechanism of
toxicity, EPA has not made a common
mechanism of toxicity finding as to
acequinocyl and any other substances
and acequinocyl does not appear to
produce a toxic metabolite produced by
other substances. For the purposes of
this tolerance action, therefore, EPA has
not assumed that acequinocyl has 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 of FFDCA
provides that EPA shall apply an
additional (10X) tenfold 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 data base on
toxicity and exposure unless EPA
determines based on reliable data that a
different margin of safety will be safe for
infants and children. This additional
margin of safety is commonly referred to
as the FQPA safety factor. In applying
this provision, EPA either retains the
default value of 10X when reliable data
do not support the choice of a different
factor, or, if reliable data are available,
EPA uses a different additional FQPA
safety factor value based on the use of
traditional UFs and/or special FQPA
safety factors, as appropriate.
2. Prenatal and postnatal sensitivity.
There is no evidence of increased
quantitative susceptibility following in
utero exposure to acequinocyl in rat or
rabbit developmental studies or
following prenatal and/or postnatal
exposure to acequnocyl in a twogeneration reproduction study in rats.
There is an apparent qualitative increase
in susceptibility in the rat and rabbit
developmental studies as indicated by
increases in resorptions that occurred at
the same or higher dose that caused
maternal toxicity, but the concern is low
since: (1) The fetal effects were noted in
the presence of maternal toxicity; and
(2) the effects are well-characterized in
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that a clear NOAEL was identified. An
increase in mortality in the offsprings of
F1 and/or F2 generation was identified
in the two-generation reproduction
study; however, EPA does not consider
this as evidence for increased
susceptibility because the mortality
occurred after weaning (day 21) during
days 22 to 55 when food intake by the
pups substantially increases,
substantially increasing the
administered dose of pesticide. In any
event these effects occurred in the
presence of maternal toxicity and a clear
NOAEL was identified. There are no
residual uncertainties and low concern
for prenatal and/or postnatal toxicity
following exposure to acequinocyl.
3. Conclusion. EPA has determined
that reliable data show that it would be
safe for infants and children to reduce
the FQPA safety factor to 1X. That
decision is based on the following
findings:
i. The toxicity database for
acequinocyl is complete.
ii. Though two studies showed effects
that could be indicative of
neurotoxicity, EPA concluded that
exposure to acequinocyl does not pose
a neurotoxicity concern and there is no
need for a developmental neurotoxicity
study or additional UFs to account for
neurotoxicity. First, acequinocyl is a
known Vitamin K antagonist; neurotoxic
compounds of similar structure were
not identified. Second, the study effects
are considered as secondary because
they were observed at very high doses
(58.9/69.2 milligrams/kilogram/day
(mg/kg/day) and 111.2/133.5 mg/kg/day
in the rat reproduction study and 252.7/
286.0 mg/kg/day in the rat subchronic
study.) In the two-generation
reproduction study, significant
reduction in startle response in F2 pups
was observed in the high dose groups.
However, other functional development
studies (such as a papillary reflex test at
21 days post partum, an open field
exploration test at 35 to 48 days post
partum) that were performed on pups
did not show significant differences as
compared to control values even at the
highest dosage rate.
iii. There is no evidence that
acequinocyl results in increased
quantitative susceptibility in in utero
rats or rabbits in the prenatal
developmental studies or in young rats
in the two-generation reproduction
study. As discussed above, there is low
concern for any potential qualitative
sensitivity observed in these studies.
iv. There are no residual uncertainties
identified in the exposure databases.
The dietary food exposure assessments
were performed based on 100% crop
treated (CT) and tolerance-level
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residues. Conservative ground water
and surface water modeling estimates
were used. No significant post
application exposure to children is
anticipated from the registered use of
acequinocyl on ornamental plants.
These assessments will not
underestimate the exposure and risks
posed by acequinocyl.
E. Aggregate Risks and Determination of
Safety
Safety is assessed for acute and
chronic risks by comparing aggregate
exposure to the pesticide to the aPAD
and cPAD. The aPAD and cPAD are
calculated by dividing the LOC by all
applicable UFs. For linear cancer risks,
EPA calculates the probability of
additional cancer cases given aggregate
exposure. Short-term, intermediateterm, and long-term risks are evaluated
by comparing aggregate exposure to the
LOC to ensure that the MOE called for
by the product of all applicable UFs is
not exceeded.
1. Acute risk. No acute risk is
expected because an endpoint of
concern attributable to a single dose was
not identified.
2. Chronic risk. Using the exposure
assumptions described in this unit for
chronic exposure, EPA has concluded
that exposure to acequinocyl from food
and water will utilize 41% of the cPAD
for the population group children 1 to
2 years old, the most highly exposed
population subgroup. Based on the use
pattern, chronic residential exposure to
residues of Acequinocyl is not expected.
3. Short-term risk. Short-term
aggregate exposure takes into account
residential exposure plus chronic
exposure to food and water (considered
to be a background exposure level).
Acequinocyl is currently registered
for use that could result in short-term
residential exposure and the Agency has
determined that it is appropriate to
aggregate chronic food and water and
short-term exposures for acequinocyl.
Using the exposure assumptions
described in this unit for short-term
exposures, EPA has concluded that
food, water, and residential exposures
aggregated result in aggregate MOEs of
2,700 for adult residential handlers 50+
years old mixing, loading and applying
acequinocyl in residential settings. The
adult 50+ years old population is the
highest exposed population group and
the MOE of 2,700 is considered
protective of the other adult population
groups. Based on the use pattern, no
significant post application exposure is
anticipated, therefore, no residential
post application assessment was
conducted.
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4. Intermediate-term risk.
Intermediate-term aggregate exposure
takes into account residential exposure
plus chronic exposure to food and water
(considered to be a background
exposure level).
Acequinocyl is not registered for use
on any sites that would result in
intermediate-term residential exposure.
Therefore, the aggregate risk is the sum
of the risk from food and water, which
do not exceed the Agency’s level of
concern.
5. Aggregate cancer risk for U.S.
population. Acequinocyl is not
considered to be a carcinogen and thus
is not expected 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 acequinocyl
residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Analytical enforcement methods
include liquid chromatography with
tandem mass spectrometric detection
(LC/MS/MS). The limit of quantitation
(LOQ) is 0.01 ppm for each analyte in
plant and livestock commodities and
the reported limit of detection (LOD) is
0.003 ppm for each analyte in plant
commodities.
Adequate enforcement methodology
(two liquid chromatography with
tandem mass spectrometric detection
LC/MS/MS) methods (Morse Methods
Meth-133 revision #4 and Meth-135,
revision #2 for grape and tree nuts,
respectively) are available to enforce the
tolerance expression. The methods 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 no established or proposed
CODEX, Canadian, or Mexican
maximum residue limits (MRLs) for
acequinocyl.
C. Response to Comments
One comment was received from a
private citizen opposing the
‘‘manufacturing, selling or use’’ of
acequinocyl. The commenter further
stated that it was their wish that no
exemptions be issued and that no
tolerances should be approved. The
Agency understands the commenter’s
concerns and recognizes that some
individuals believe that pesticides
E:\FR\FM\02APR1.SGM
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Federal Register / Vol. 73, No. 64 / Wednesday, April 2, 2008 / Rules and Regulations
should be banned completely. However,
under the existing framework provided
by section 408 of the FFDCA, EPA is
required to establish pesticide
tolerances or exemptions where persons
seeking such tolerances have
demonstrated that the pesticide meets
the safety standard imposed by that
statue. The commenter has not provided
the Agency with specific rationale nor
additional information pertaining to the
legal standards in FFDCA section 408
for opposing the establishment of a
tolerance for acequinocyl. In the
absence of any additional information of
a factual nature, the Agency can not
effectively respond to the commenter’s
disagreement with the Agency’s
decision.
mstockstill on PROD1PC66 with RULES
V. Conclusion
Therefore, the tolerances are
established for combined residues of
acequinocyl and its metabolite, 2dodecyl-3-hydroxy-1,4-naphthoquinone
expressed as acequinocyl equivalents, in
or on grape and nut, tree, group 14 at
1.6 ppm and 0.02 ppm, respectively.
VI. Statutory and Executive Order
Reviews
This final rule establishes a tolerance
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 rule has
been exempted from review under
Executive Order 12866, this rule is not
subject to Executive Order 13211,
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.
VerDate Aug<31>2005
18:23 Apr 01, 2008
Jkt 214001
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 6, 2000) do not apply
to this rule. In addition, This 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).
Dated: March 20, 2008.
Lois Rossi,
Director, Registration Division, Office of
Pesticide Programs.
VII. Congressional Review Act
[EPA–HQ–OPP–2006–0479; FRL–8347–9]
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).
Ferric Citrate; Inert Ingredient;
Exemption from the Requirement of a
Tolerance
List of Subjects in 40 CFR Part 180
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
PO 00000
Frm 00030
Fmt 4700
Sfmt 4700
Therefore, 40 CFR chapter I is
amended as follows:
I
PART 180—[AMENDED]
1. The authority citation for part 180
continues to read as follows:
I
Authority: 21 U.S.C. 321(q), 346a and 371.
2. Section 180. 599 is amended by
removing from the table in paragraph (a)
the entry for almond, and adding new
commodities to the table to read as
follows:
I
§ 180.599 Acequinocyl; Tolerances for
residues.
(a) *
*
*
Commodity
*
*
Parts per million
*
*
Grape ..............................
*
*
*
Nut, tree, group 14 .........
*
*
*
*
*
*
*
*
*
*
1.6
*
0.02
*
*
[FR Doc. E8–6699 Filed 4–1–08; 8:45 am]
BILLING CODE 6560–50–S
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
SUMMARY: This regulation establishes an
exemption from the requirement of a
tolerance under 40 CFR 180.910 for
residues of ferric citrate (CAS Reg. No.
2338–05–8) in or on raw agricultural
commodities when applied/used as
inert ingredients in pesticide
formulations. The Shepherd Chemical
Company submitted a petition to EPA
under the Federal Food, Drug, and
Cosmetic Act (FFDCA), as amended by
the Food Quality Protection Act of 1996,
requesting an exemption from the
requirement of a tolerance. This
regulation eliminates the need to
establish a maximum permissible level
for residues of ferric citrate.
DATES: This regulation is effective April
2, 2008. Objections and requests for
E:\FR\FM\02APR1.SGM
02APR1
Agencies
[Federal Register Volume 73, Number 64 (Wednesday, April 2, 2008)]
[Rules and Regulations]
[Pages 17906-17910]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-6699]
=======================================================================
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2006-0678; FRL-8356-6]
Acequinocyl; Pesticide Tolerance
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes tolerances for combined residues
of acequinocyl and its metabolite, 2-dodecyl-3-hydroxy-1, 4-
naphthoquinone (acequinocyl-OH) expressed as acequinocyl equivalents in
or on nut, tree, group 14 and grape and removes the separate tolerances
established for almond. Arysta LifeScience North America Corporation
requested these tolerances under the Federal Food, Drug, and Cosmetic
Act (FFDCA).
DATES: This regulation is effective April 2, 2008. Objections and
requests for hearings must be received on or before June 2, 2008, 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-2006-0678. To access the
electronic docket, go to https://www.regulations.gov, select ``Advanced
Search,'' then ``Docket Search.'' Insert the docket ID number where
indicated and select the ``Submit'' button. Follow the instructions on
the regulations.gov website to view the docket index or access
available documents. All documents in the docket are listed in the
docket index available in 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: Marilyn Mautz, Registration Division
(7505P), Office of Pesticide Programs, Environmental Protection Agency,
1200 Pennsylvania Ave., NW., Washington, DC 20460-0001; telephone
number: (703) 305-6785; e-mail address: mautz.marilyn@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), e.g., agricultural
workers; greenhouse, nursery, and floriculture workers; farmers.
Animal production (NAICS code 112), e.g., cattle ranchers
and farmers, dairy cattle farmers, livestock farmers.
Food manufacturing (NAICS code 311), e.g., agricultural
workers; farmers; greenhouse, nursery, and floriculture workers;
ranchers; pesticide applicators.
Pesticide manufacturing (NAICS code 32532), e.g.,
agricultural workers; commercial applicators; farmers; greenhouse,
nursery, and floriculture workers; residential users.
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 an electronic copy of this Federal
Register document through the electronic docket 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 pilot e-CFR
site at https://www.gpoaccess.gov/ecfr.
C. Can I File an Objection or Hearing Request?
Under section 408(g) of FFDCA, any person may file an objection to
any aspect of this regulation and may also request a hearing on those
objections. You must file your objection or request a hearing on this
regulation in accordance with the instructions provided in 40 CFR part
178. To ensure proper receipt by EPA, you must identify docket ID
number EPA-HQ-OPP-2006-0678 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 June 2, 2008.
In addition to filing an objection or hearing request with the
Hearing Clerk
[[Page 17907]]
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-2006-0678,
by one of the following methods:
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the on-line instructions for submitting comments.
Mail: Office of Pesticide Programs (OPP) Regulatory Public
Docket (7502P), Environmental Protection Agency, 1200 Pennsylvania
Ave., NW., Washington, DC 20460-0001.
Delivery: OPP Regulatory Public Docket (7502P),
Environmental Protection Agency, Rm. S-4400, One Potomac Yard (South
Bldg.), 2777 S. Crystal Dr., Arlington, VA. Deliveries are only
accepted during the Docket'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 August 11, 2006 (71 FR 46223) (FRL-8085-
8), 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
6F7040) by Arysta LifeScience North America Corporation, 15401 Weston
Pkwy., Suite 150, Cary, NC 27513. The petition requested that 40 CFR
180.599 be amended by establishing a tolerance for combined residues of
the insecticide acequinocyl and its metabolite 2-dodecyl-3-hydroxy-1,4-
naphthoquinone (acequinocyl-OH) expressed as acequinocyl equivalents in
or on tree nuts (crop group 14) at 0.02 parts per million (ppm). That
notice referenced a summary of the petition prepared by Arysta
LifeScience North America Corporation, the registrant, which is
available to the public in the docket, https://www.regulations.gov. A
comment was received on the notice of filing. EPA's response to the
comment is discussed in Unit IV.C. below. In the Federal Register of
January 23, 2008 (73 FR 3964) (FRL-8345-7), 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 7F7176) by Arysta
LifeScience North America Corporation. The petition requested that 40
CFR 180.599 be amended by establishing a tolerance for acequinocyl and
its metabolite acequinocyl-OH expressed as acequinocyl equivalents in
or on grapes at 7.0 parts per million (ppm), grape juice at 0.05 ppm
and raisins at 0.1 ppm. The proposed grape tolerance of 7.0 ppm was
subsequently amended by the petitioner to 1.0 ppm.
Based upon review of the data supporting the petition, EPA has
revised the tolerances proposed for grape, grape juice and raisin; and
changed the commodity definition for tree nuts (crop group 14). The
appropriate tolerance for grape was calculated to be 1.6 ppm. The grape
processing data provided for grape juice and raisins showed the
combined residues of acequinocyl and acequinocyl-OH did not concentrate
in either of these commodities and, thus separate tolerances are not
required for grape juice or raisins. The recommended tolerance level
for grape was determined considering Agency guidance (Guidance for
Setting Pesticide Tolerances Based on Field Trial Data). The commodity
definition for tree nuts (crop group 14) has been changed to nut, tree,
group 14.
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. . .
.'' These provisions were added to FFDCA by the Food Quality Protection
Act (FQPA) of 1996.
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 the petitioned-for tolerance
for combined residues of acequinocyl and its metabolite acequinocyl-OH
expressed as aceqinocyl equivalents on nut, tree, group 14 and grape at
0.02 ppm and 1.6 ppm, respectively. EPA's assessment of exposures and
risks associated with establishing the tolerance 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. Specific information on the studies received and the nature
of the adverse effects caused by acequinocyl as well as the no-
observed-adverse-effect-level (NOAEL) and the lowest-observed-adverse-
effect-level (LOAEL) from the toxicity studies are discussed in the
acequinocyl final rule published in the Federal Register of July 21,
2004 (69 FR 43525) (FRL-7364-1).
B. Toxicological Endpoints
For hazards that have a threshold below which there is no
appreciable risk, the toxicological level of concern (LOC) is derived
from the highest dose at which the NOAEL are observed in the toxicology
study identified as appropriate for use in risk assessment. However, if
a NOAEL cannot be determined, the lowest dose at which the LOAEL of
concern are identified is sometimes used for risk assessment.
Uncertainty/safety factors (UFs) are used in conjunction with the level
of concern (LOC) 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 risks by
comparing aggregate exposure to the pesticide to the acute population
adjusted (aPAD) dose and chronic population adjusted dose (cPAD). The
aPAD and cPAD are calculated by dividing the LOC by all applicable UFs.
Short-term, intermediate-term, and long-term risks are evaluated by
comparing aggregate exposure to the LOC to ensure that the margin of
exposure (MOE) called for by the product of all applicable UFs is not
exceeded.
For non-threshold risks, the Agency assumes that any amount of
exposure will lead to some degree of risk and estimates risk in terms
of the probability of occurrence of additional adverse cases.
Generally, cancer risks are
[[Page 17908]]
considered non-threshold. 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/fedrgstr/EPA-
PEST/1997/November/Day-26/p30948.htm.
A summary of the toxicological endpoints for acequinocyl used for
human risk assessment can be found at https://www.regulations.gov in the
document ``Human Health Risk Assessment for Use of Acequinocyl on
Grapes, the Tree Nut Crop Group, and Residential Sites (Ornamentals)''
on pages 13 and 14 in docket ID number EPA-HQ-OPP-2006-0678-0006.
C. Exposure Assessment
1. Dietary exposure from food and feed uses. In evaluating dietary
exposure to acequinocyl, EPA considered exposure under the petitioned-
for tolerances as well as all existing acequinocyl tolerances in 40 CFR
180.599. EPA assessed dietary exposures from acequinocyl 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
acequinocyl; 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 United States
Department of Agriculture (USDA) 1994-1996 and 1998; CSFII. As to
residue levels in food, EPA assumed all foods for which there are
tolerances were treated and contain tolerance-level residues.
Anticipated residues were not used.
iii. Cancer. The Agency classified acequinocyl as a ``not likely
carcinogen''. Therefore, an exposure assessment for the purpose of
estimating cancer risk is unnecessary.
iv. Anticipated residue and PCT information. The Agency did not use
anticipated residue estimates or PCT information in the acequinocyl
dietary exposure assessment.
2. Dietary exposure from drinking water. The Agency lacks
sufficient monitoring data to complete a comprehensive dietary exposure
analysis and risk assessment for acequinocyl in drinking water. Because
the Agency does not have comprehensive monitoring data, drinking water
concentration estimates are made by reliance on simulation or modeling
taking into account data on the environmental fate characteristics of
acequinocyl. 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) with the index reservoir scenarios model, the
estimated drinking water concentrations (EDWCs) of acequinocyl only and
of the combined residues of acequinocyl and its metabolite
(acequinocyl-OH) for chronic exposures are estimated to be 2.73 and
0.37 parts per billion (ppb), respectively for surface water. Based on
the Screening Concentration in Ground Water (SCI-GROW) model, for
chronic ground water exposure, the EDWC value for the combined residues
of acequinocyl and its metabolite (acequinocyl-OH) is 0.0036 ppb.
Modeled estimates of drinking water concentrations were directly
entered into the dietary exposure model. Acute dietary risk assessments
were not conducted because an end point of concern attributable to a
single dose was not identified. For chronic dietary risk assessment,
the water concentration value of 2.73 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).
Acequinocyl is currently registered for the following residential
non-dietary sites: Ornamental plants. EPA assessed residential exposure
using the following assumptions: Exposure is considered to be short
term only, due to the infrequent use patterns associated with homeowner
products; and individuals are wearing shorts, short-sleeved shirts,
socks, and shoes. The estimates of exposure to residential handlers are
based on surrogate data available from the Outdoor Residential Exposure
Task Force (ORETF) and the Pesticide Handlers Exposure Data (PHED)
(August, 1998). The residential exposure assessed was exposure to
adults from residential application of acequinocyl. Short-term
inhalation and dermal exposure estimates were generated for residential
adult handlers during the mixing, loading and application of
acequinocyl in residential settings. Based on the use pattern, no
significant post application exposure in residential settings is
anticipated.
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.''
Unlike other pesticides for which EPA has followed a cumulative
risk approach based on a common mechanism of toxicity, EPA has not made
a common mechanism of toxicity finding as to acequinocyl and any other
substances and acequinocyl does not appear to produce a toxic
metabolite produced by other substances. For the purposes of this
tolerance action, therefore, EPA has not assumed that acequinocyl has 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 of FFDCA provides that EPA shall apply
an additional (10X) tenfold 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 data base on toxicity and exposure
unless EPA determines based on reliable data that a different margin of
safety will be safe for infants and children. This additional margin of
safety is commonly referred to as the FQPA safety factor. In applying
this provision, EPA either retains the default value of 10X when
reliable data do not support the choice of a different factor, or, if
reliable data are available, EPA uses a different additional FQPA
safety factor value based on the use of traditional UFs and/or special
FQPA safety factors, as appropriate.
2. Prenatal and postnatal sensitivity. There is no evidence of
increased quantitative susceptibility following in utero exposure to
acequinocyl in rat or rabbit developmental studies or following
prenatal and/or postnatal exposure to acequnocyl in a two-generation
reproduction study in rats. There is an apparent qualitative increase
in susceptibility in the rat and rabbit developmental studies as
indicated by increases in resorptions that occurred at the same or
higher dose that caused maternal toxicity, but the concern is low
since: (1) The fetal effects were noted in the presence of maternal
toxicity; and (2) the effects are well-characterized in
[[Page 17909]]
that a clear NOAEL was identified. An increase in mortality in the
offsprings of F1 and/or F2 generation was identified in the two-
generation reproduction study; however, EPA does not consider this as
evidence for increased susceptibility because the mortality occurred
after weaning (day 21) during days 22 to 55 when food intake by the
pups substantially increases, substantially increasing the administered
dose of pesticide. In any event these effects occurred in the presence
of maternal toxicity and a clear NOAEL was identified. There are no
residual uncertainties and low concern for prenatal and/or postnatal
toxicity following exposure to acequinocyl.
3. Conclusion. EPA has determined that reliable data show that it
would be safe for infants and children to reduce the FQPA safety factor
to 1X. That decision is based on the following findings:
i. The toxicity database for acequinocyl is complete.
ii. Though two studies showed effects that could be indicative of
neurotoxicity, EPA concluded that exposure to acequinocyl does not pose
a neurotoxicity concern and there is no need for a developmental
neurotoxicity study or additional UFs to account for neurotoxicity.
First, acequinocyl is a known Vitamin K antagonist; neurotoxic
compounds of similar structure were not identified. Second, the study
effects are considered as secondary because they were observed at very
high doses (58.9/69.2 milligrams/kilogram/day (mg/kg/day) and 111.2/
133.5 mg/kg/day in the rat reproduction study and 252.7/286.0 mg/kg/day
in the rat subchronic study.) In the two-generation reproduction study,
significant reduction in startle response in F2 pups was observed in
the high dose groups. However, other functional development studies
(such as a papillary reflex test at 21 days post partum, an open field
exploration test at 35 to 48 days post partum) that were performed on
pups did not show significant differences as compared to control values
even at the highest dosage rate.
iii. There is no evidence that acequinocyl results in increased
quantitative susceptibility in in utero rats or rabbits in the prenatal
developmental studies or in young rats in the two-generation
reproduction study. As discussed above, there is low concern for any
potential qualitative sensitivity observed in these studies.
iv. There are no residual uncertainties identified in the exposure
databases. The dietary food exposure assessments were performed based
on 100% crop treated (CT) and tolerance-level residues. Conservative
ground water and surface water modeling estimates were used. No
significant post application exposure to children is anticipated from
the registered use of acequinocyl on ornamental plants. These
assessments will not underestimate the exposure and risks posed by
acequinocyl.
E. Aggregate Risks and Determination of Safety
Safety is assessed for acute and chronic risks by comparing
aggregate exposure to the pesticide to the aPAD and cPAD. The aPAD and
cPAD are calculated by dividing the LOC by all applicable UFs. For
linear cancer risks, EPA calculates the probability of additional
cancer cases given aggregate exposure. Short-term, intermediate-term,
and long-term risks are evaluated by comparing aggregate exposure to
the LOC to ensure that the MOE called for by the product of all
applicable UFs is not exceeded.
1. Acute risk. No acute risk is expected because an endpoint of
concern attributable to a single dose was not identified.
2. Chronic risk. Using the exposure assumptions described in this
unit for chronic exposure, EPA has concluded that exposure to
acequinocyl from food and water will utilize 41% of the cPAD for the
population group children 1 to 2 years old, the most highly exposed
population subgroup. Based on the use pattern, chronic residential
exposure to residues of Acequinocyl is not expected.
3. Short-term risk. Short-term aggregate exposure takes into
account residential exposure plus chronic exposure to food and water
(considered to be a background exposure level).
Acequinocyl is currently registered for use that could result in
short-term residential exposure and the Agency has determined that it
is appropriate to aggregate chronic food and water and short-term
exposures for acequinocyl.
Using the exposure assumptions described in this unit for short-
term exposures, EPA has concluded that food, water, and residential
exposures aggregated result in aggregate MOEs of 2,700 for adult
residential handlers 50+ years old mixing, loading and applying
acequinocyl in residential settings. The adult 50+ years old population
is the highest exposed population group and the MOE of 2,700 is
considered protective of the other adult population groups. Based on
the use pattern, no significant post application exposure is
anticipated, therefore, no residential post application assessment was
conducted.
4. Intermediate-term risk. Intermediate-term aggregate exposure
takes into account residential exposure plus chronic exposure to food
and water (considered to be a background exposure level).
Acequinocyl is not registered for use on any sites that would
result in intermediate-term residential exposure. Therefore, the
aggregate risk is the sum of the risk from food and water, which do not
exceed the Agency's level of concern.
5. Aggregate cancer risk for U.S. population. Acequinocyl is not
considered to be a carcinogen and thus is not expected 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 acequinocyl residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Analytical enforcement methods include liquid chromatography with
tandem mass spectrometric detection (LC/MS/MS). The limit of
quantitation (LOQ) is 0.01 ppm for each analyte in plant and livestock
commodities and the reported limit of detection (LOD) is 0.003 ppm for
each analyte in plant commodities.
Adequate enforcement methodology (two liquid chromatography with
tandem mass spectrometric detection LC/MS/MS) methods (Morse Methods
Meth-133 revision 4 and Meth-135, revision 2 for
grape and tree nuts, respectively) are available to enforce the
tolerance expression. The methods 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 no established or proposed CODEX, Canadian, or Mexican
maximum residue limits (MRLs) for acequinocyl.
C. Response to Comments
One comment was received from a private citizen opposing the
``manufacturing, selling or use'' of acequinocyl. The commenter further
stated that it was their wish that no exemptions be issued and that no
tolerances should be approved. The Agency understands the commenter's
concerns and recognizes that some individuals believe that pesticides
[[Page 17910]]
should be banned completely. However, under the existing framework
provided by section 408 of the FFDCA, EPA is required to establish
pesticide tolerances or exemptions where persons seeking such
tolerances have demonstrated that the pesticide meets the safety
standard imposed by that statue. The commenter has not provided the
Agency with specific rationale nor additional information pertaining to
the legal standards in FFDCA section 408 for opposing the establishment
of a tolerance for acequinocyl. In the absence of any additional
information of a factual nature, the Agency can not effectively respond
to the commenter's disagreement with the Agency's decision.
V. Conclusion
Therefore, the tolerances are established for combined residues of
acequinocyl and its metabolite, 2-dodecyl-3-hydroxy-1,4-naphthoquinone
expressed as acequinocyl equivalents, in or on grape and nut, tree,
group 14 at 1.6 ppm and 0.02 ppm, respectively.
VI. Statutory and Executive Order Reviews
This final rule establishes a tolerance 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 rule has been
exempted from review under Executive Order 12866, this rule is not
subject to Executive Order 13211, 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 6, 2000) do not apply to this rule. In addition, This
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: March 20, 2008.
Lois Rossi,
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. 599 is amended by removing from the table in paragraph
(a) the entry for almond, and adding new commodities to the table to
read as follows:
Sec. 180.599 Acequinocyl; Tolerances for residues.
(a) * * *
------------------------------------------------------------------------
Commodity Parts per million
------------------------------------------------------------------------
* * * * *
Grape................................................ 1.6
* * * * *
Nut, tree, group 14.................................. 0.02
* * * * *
------------------------------------------------------------------------
* * * * *
[FR Doc. E8-6699 Filed 4-1-08; 8:45 am]
BILLING CODE 6560-50-S