Spiromesifen; Pesticide Tolerances, 3333-3337 [2013-00728]
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Federal Register / Vol. 78, No. 11 / Wednesday, January 16, 2013 / Rules and Regulations
VII. Congressional Review Act
*
Pursuant to the Congressional Review
Act (5 U.S.C. 801 et seq.), EPA will
submit a report containing this rule and
other required information to the U.S.
Senate, the U.S. House of
Representatives, and the Comptroller
General of the United States prior to
publication of the rule in the Federal
Register. This action is not a ‘‘major
rule’’ as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Dated: January 7, 2013.
Lois Rossi,
Director, Registration 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. In § 180.535, in paragraph (a),
revise the introductory text and add
alphabetically the following
commodities to the table to read as
follows:
■
§ 180.535 Fluroxypyr 1-methylheptyl ester;
tolerances for residues.
(a) General. Tolerances are
established for combined residues of
fluroxypyr 1-methylheptyl ester [1methylheptyl ((4-amino-3,5-dichloro-6fluoro-2-pyridinyl)oxy)acetate] and its
metabolite fluroxypyr [((4-amino-3,5dichloro-6-fluoro-2-pyridinyl)oxy)acetic
acid] in or on the following raw
agricultural commodities. Compliance
with the established tolerance levels is
determined by measuring only the sum
of fluroxypyr 1-methylheptyl ester [1methylheptyl ((4-amino-3, 5-dichloro-6fluoro-2-pyridinyl)oxy)acetate] and its
metabolite fluroxypyr [((4-amino-3,5dichloro-6-fluoro-2-pyridinyl)oxy)acetic
acid] calculated as the stoichiometric
equivalent of fluroxypyr.
Parts per
million
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Rice, bran .....................................
Rice, grain ....................................
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BILLING CODE P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2012–0038; FRL–9374–3]
Spiromesifen; Pesticide Tolerances
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
Commodity
*
[FR Doc. 2013–00562 Filed 1–15–13; 8:45 am]
This regulation establishes
tolerances for residues of spiromesifen
in or on tea, dried. Bayer CropScience
requested these tolerances under the
Federal Food, Drug, and Cosmetic Act
(FFDCA).
DATES: This regulation is effective
January 16, 2013. Objections and
requests for hearings must be received
on or before March 18, 2013, and must
be filed in accordance with the
instructions provided in 40 CFR part
178 (see also Unit I.C. of the
SUPPLEMENTARY INFORMATION).
ADDRESSES: The docket for this action,
identified by docket identification (ID)
number EPA–HQ–OPP–2012–0038, is
available at https://www.regulations.gov
or at the Office of Pesticide Programs
Regulatory Public Docket (OPP Docket)
in the Environmental Protection Agency
Docket Center (EPA/DC), EPA West
Bldg., Rm. 3334, 1301 Constitution Ave.
NW., Washington, DC 20460–0001. The
Public Reading Room is open from 8:30
a.m. to 4:30 p.m., Monday through
Friday, excluding legal holidays. The
telephone number for the Public
Reading Room is (202) 566–1744, and
the telephone number for the OPP
Docket is (703) 305–5805. Please review
the visitor instructions and additional
information about the docket available
at https://www.epa.gov/dockets.
FOR FURTHER INFORMATION CONTACT:
Jennifer Gaines, Registration Division
(7505P), Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave. NW., Washington,
DC 20460–0001; telephone number:
(703) 305–5967; email address:
Gaines.Jennifer@epa.gov.
SUPPLEMENTARY INFORMATION:
SUMMARY:
I. General Information
A. Does this action apply to me?
You may be potentially affected by
3.0 this action if you are an agricultural
1.5
producer, food manufacturer, or
pesticide manufacturer. The following
*
list of North American Industrial
*
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3333
Classification System (NAICS) codes is
not intended to be exhaustive, but rather
provides a guide to help readers
determine whether this document
applies to them. Potentially affected
entities may include:
• Crop production (NAICS code 111).
• Animal production (NAICS code
112).
• Food manufacturing (NAICS code
311).
• Pesticide manufacturing (NAICS
code 32532).
B. How can I get electronic access to
other related information?
You may access a frequently updated
electronic version of EPA’s tolerance
regulations at 40 CFR part 180 through
the Government Printing Office’s e-CFR
site at https://ecfr.gpoaccess.gov/cgi/t/
text/text-idx?&c=ecfr&tpl=/ecfrbrowse/
Title40/40tab_02.tpl.
C. How can I file an objection or hearing
request?
Under FFDCA section 408(g), 21
U.S.C. 346a, any person may file an
objection to any aspect of this regulation
and may also request a hearing on those
objections. You must file your objection
or request a hearing on this regulation
in accordance with the instructions
provided in 40 CFR part 178. To ensure
proper receipt by EPA, you must
identify docket ID number EPA–HQ–
OPP–2012–0038 in the subject line on
the first page of your submission. All
objections and requests for a hearing
must be in writing, and must be
received by the Hearing Clerk on or
before March 18, 2013. Addresses for
mail and hand delivery of objections
and hearing requests are provided in 40
CFR 178.25(b).
In addition to filing an objection or
hearing request with the Hearing Clerk
as described in 40 CFR part 178, please
submit a copy of the filing (excluding
any Confidential Business Information
(CBI)) for inclusion in the public docket.
Information not marked confidential
pursuant to 40 CFR part 2 may be
disclosed publicly by EPA without prior
notice. Submit the non-CBI copy of your
objection or hearing request, identified
by docket ID number EPA–HQ–OPP–
2012–0038, by one of the following
methods:
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the online
instructions for submitting comments.
Do not submit electronically any
information you consider to be
Confidential Business Information (CBI)
or other information whose disclosure is
restricted by statute.
• Mail: OPP Docket, Environmental
Protection Agency Docket Center (EPA/
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DC), (28221T), 1200 Pennsylvania Ave.,
NW., Washington, DC 20460–0001.
• Hand Delivery: To make special
arrangements for hand delivery or
delivery of boxed information, please
follow the instructions at https://
www.epa.gov/dockets/contacts.htm.
Additional instructions on
commenting or visiting the docket,
along with more information about
dockets generally, is available at
https://www.epa.gov/dockets.
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II. Summary of Petitioned-For
Tolerance
In the Federal Register of April 4,
2012 (77 FR 20334–20337) (FRL–9340–
4), EPA issued a document pursuant to
FFDCA section 408(d)(3), 21 U.S.C.
346a(d)(3), announcing the filing of a
pesticide petition (PP 1E7924) by Bayer
CropScience, P.O. Box 12014, 2 T.W.
Alexander Dr., Research Triangle Park,
N.C. 27709. The petition requested that
40 CFR 180.607 be amended by
establishing tolerances for residues of
spiromesifen, (2-oxo-3-(2,4,6trimethylphenyl)-1-oxaspiro[4.4]non-3en-4-yl 3,3-dimethylbutanoate) and its
enol metabolite (4-hydroxy-3-(2,4,6trimethylphenyl)-1-oxaspiro[4.4]non-3en-2-one), in or on tea, dried at 50 parts
per million (ppm). That document
referenced a summary of the petition
prepared by Bayer CropScience, the
registrant, which is available in the
docket, https://www.regulations.gov.
There were no comments received in
response to the notice of filing. Based
upon review of the data supporting the
petition, EPA has changed the tolerance
for tea, dried from 50 ppm to 40 ppm.
The reason for this change is explained
in Unit IV.D.
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
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give special consideration to exposure
of infants and children to the pesticide
chemical residue in establishing a
tolerance and to ‘‘ensure that there is a
reasonable certainty that no harm will
result to infants and children from
aggregate exposure to the pesticide
chemical residue * * *.’’
Consistent with FFDCA section
408(b)(2)(D), and the factors specified in
FFDCA section 408(b)(2)(D), EPA has
reviewed the available scientific data
and other relevant information in
support of this action. EPA has
sufficient data to assess the hazards of
and to make a determination on
aggregate exposure for spiromesifen
including exposure resulting from the
tolerances established by this action.
EPA’s assessment of exposures and risks
associated with spiromesifen follows.
in mutagenicity testing with
spiromesifen. Spiromesifen is not
considered a neurotoxic chemical based
on the chemical’s mode of action and
the available data from multiple studies,
including acute and subchronic
neurotoxicity studies.
Specific information on the studies
received and the nature of the adverse
effects caused by spiromesifen as well
as the no-observed-adverse-effect-level
(NOAEL) and the lowest-observedadverse-effect-level (LOAEL) from the
toxicity studies can be found at https://
www.regulations.gov in document
‘‘Spiromesifen: Human-Health Risk
Assessment for Request for Tolerance
without U.S. Registration in/on Tea.’’ at
pages 20 to 24 in docket ID number
EPA–HQ–OPP–2012–0038.
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.
Spiromesifen was classified as having
low acute toxicity via the oral, dermal
and inhalation routes of exposure. It
was neither an eye nor dermal irritant,
but showed moderate potential as a skin
contact sensitizer. In short- and longterm animal toxicity tests, the critical
effects observed were loss of body
weight, adrenal effects (discoloration,
decrease in fine vesticulation, and the
presence of cytoplasmic eosinophilia in
zona fasciculata cells), thyroid effects
(increased thyroid stimulating hormone,
increased thyroxine binding capacity,
decreased T3 and T4 levels, colloidal
alteration and thyroid follicular cell
hypertrophy), liver effects (increased
alkaline phosphatase, alanine
transaminase (ALT) and decreased
cholesterol, and triglycerides), and
spleen effects (atrophy, decreased
spleen cell count, and increased
macrophages). There were no
developmental or reproductive effects of
concern following oral administration of
spiromesifen in rats or rabbits. EPA
concluded that spiromesifen is not
likely to be carcinogenic to humans
based on a lack of evidence of cancer in
bioassays in rats and mice. There were
no in vivo or in vitro mutagenic effects
B. Toxicological Points of Departure/
Levels of Concern
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Once a pesticide’s toxicological
profile is determined, EPA identifies
toxicological points of departure (POD)
and levels of concern to use in
evaluating the risk posed by human
exposure to the pesticide. For hazards
that have a threshold below which there
is no appreciable risk, the toxicological
POD is used as the basis for derivation
of reference values for risk assessment.
PODs are developed based on a careful
analysis of the doses in each
toxicological study to determine the
dose at which no adverse effects are
observed (the NOAEL) and the lowest
dose at which adverse effects of concern
are identified (the LOAEL). Uncertainty/
safety factors are used in conjunction
with the POD to calculate a safe
exposure level—generally referred to as
a population-adjusted dose (PAD) or a
reference dose (RfD)—and a safe margin
of exposure (MOE). For non-threshold
risks, the Agency assumes that any
amount of exposure will lead to some
degree of risk. Thus, the Agency
estimates risk in terms of the probability
of an occurrence of the adverse effect
expected in a lifetime. For more
information on the general principles
EPA uses in risk characterization and a
complete description of the risk
assessment process, see https://
www.epa.gov/pesticides/factsheets/
riskassess.htm.
A summary of the toxicological
endpoints for spiromesifen used for
human risk assessment is shown in
Table 1 of this unit.
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TABLE 1—SUMMARY OF TOXICOLOGICAL DOSES AND ENDPOINTS FOR SPIROMESIFEN FOR USE IN HUMAN HEALTH RISK
ASSESSMENT
Exposure/scenario
Acute dietary (General population including infants and
children).
Chronic dietary (All populations)
Dermal short-term (1 to 30
days) and Intermediate-term
(1 to 6 months).
Inhalation short-term (1 to 30
days) and Intermediate-Term
(1 to 6 months).
Point of departure
and uncertainty/
safety factors
RfD, PAD, LOC for
risk assessment
Study and toxicological effects
Not applicable ..........
None ........................
An endpoint of concern attributable to a single dose was not
identified. An aRfD was not established.
NOAEL= 2.2 mg/kg/
day.
UFA = 10X
UFH = 10X
FQPA SF = 1X
None ........................
Chronic RfD = 0.022
mg/kg/day..
cPAD = 0.022 mg/
kg/day
2-generation reproduction study in rats. The parental systemic
LOAEL = 8.81 mg/kg/day based on significantly decreased
spleen weight (absolute and relative in parental females and
F1 males) and significantly decreased growing ovarian follicles in females.
No dermal, systemic, or developmental concerns.
Inhalation (or oral)
study NOAEL =
21.1 mg/kg/day
(inhalation absorption rate = 100%).
HEC = 0.06 mg/L
HED = 1.42 mg/kg/
bw/day
Cancer (Oral, dermal, inhalation).
None ........................
LOC for MOE = 30
(3X interspecies
and 10X
intraspecies extrapolations).
Subchronic (30-day) inhalation toxicity study in rats & 5-day inhalation toxicity study in rats.
LOAEL (5-day) = 134.2 mg/kg/day based on the clinical signs
(tremors,
clonic-tonic
convulsions,
reduced
activity,
bradypnea, labored breathing, vocalization, avoidance reaction, giddiness, piloerection, limp, emaciation, cyanosis,
squatted posture, apathy, salivation, gross pathology (dark
red areas or foci in the lungs, bloated stomachs, and pale
liver), and decreased spleen weights.
Spiromesifen has been classified as ‘‘not likely to be carcinogenic to humans.’’
FQPA SF = Food Quality Protection Act Safety Factor. LOAEL = lowest-observed-adverse-effect-level. LOC = level of concern. mg/kg/day =
milligram/kilogram/day. MOE = margin of exposure. NOAEL = no-observed-adverse-effect-level. PAD = population-adjusted dose (a = acute, c =
chronic). RfD = reference dose. UF = uncertainty factor. UFA = extrapolation from animal to human (interspecies). UFH = potential variation in
sensitivity among members of the human population (intraspecies). HEC = human human-equivalent concentration. HED = human human-equivalent dose.
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C. Exposure Assessment
1. Dietary exposure from food and
feed uses. In evaluating dietary
exposure to spiromesifen, EPA
considered exposure under the
petitioned-for tolerances as well as all
existing spiromesifen tolerances in 40
CFR 180.607. EPA assessed dietary
exposures from spiromesifen 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 spiromesifen; 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 USDA 1994–1996 and 1998
Cumulative Survey of Food Intake by
Individuals, CSFII. As to residue levels
in food, EPA assumed tolerance-level
residues for all commodities except for
the leafy-green and leafy-Brassica
vegetable subgroups (4A, 4B, and 5B),
spearmint and peppermint tops and oil,
and tea. For these commodities,
residues were also based on tolerance
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levels; however, a correction factor was
applied to the tolerance levels to
account for BSN 2060-4-hydroxymethyl
metabolites of spiromesifen included in
the risk assessment for these
commodities. The additional
metabolites, BSN 2060-4-hydroxymethyl
and BSN 2060-4-hydroxymethylglucoside, were observed in the
metabolism studies of lettuce only,
comprising 21% of the total radioactive
residues. Since the toxicity of the BSN
2060-4-hydroxymethyl metabolites is
expected to be comparable to the parent
compound, it was included in the risk
assessment for leafy crops (including
tea, subgroups 4A, 4B, and 5B and
spearmint and peppermint tops and oil).
To account for this additional exposure,
the recommended tolerance level was
multiplied by a correction factor of
1.3X, where 1.3 = (Metabolites in Risk
Assessment)/(Metabolites in Tolerance
Expression; concentrations from the
lettuce metabolism study). Dietary
Exposure Evaluation Model (DEEM)
7.81 default processing factors and 100
percent crop treated were assumed.
iii. Cancer. Based on the data
summarized in Unit III.A., EPA has
concluded that spiromesifen does not
pose a cancer risk to humans. Therefore,
a dietary exposure assessment for the
purpose of assessing cancer risk is
unnecessary.
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iv. Anticipated residue and percent
crop treated (PCT) information. EPA did
not use anticipated residue and/or PCT
information in the dietary assessment
for spiromesifen. As discussed in Unit
III.C.1.ii., for the leafy-greens and leafy
Brassica greens subgroups (4A, 4B, and
5B) and spearmint and peppermint tops
and oil, and tea, the residue values were
adjusted upward to account for the
metabolite BSN 2060-4-hydroxymethyl
(free and conjugated).
2. Dietary exposure from drinking
water. The Agency used screening level
water exposure models in the dietary
exposure analysis and risk assessment
for spiromesifen in drinking water.
These simulation models take into
account data on the physical, chemical,
and fate/transport characteristics of
spiromesifen. 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 Provisional Cranberry
Model and Screening Concentration in
Ground Water (SCI–GROW) models the
estimated drinking water concentrations
(EDWCs) of spiromesifen for chronic
exposures for non-cancer assessments
are estimated to be 188 ppb for surface
water and 86 ppb for ground water.
Modeled estimates of drinking water
concentrations were directly entered
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into the dietary exposure model. For
chronic dietary risk assessment, the
water concentration of value 188 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).
Spiromesifen is currently registered
for the following uses that could result
in residential exposures: Indoor and
outdoor uses for the control of mites and
whiteflies on ornamental plants in and
around areas such as parks, golf courses,
recreational areas, and residential and
commercial buildings. EPA assessed
residential exposure using the following
assumptions: Residential handler
inhalation exposure was assessed for
adults mixing/loading/applying
spiromesifen using handheld equipment
to ornamentals. Details for the
residential risk exposure and risk
assessment are contained in the EPA
public docket EPA–HQ–OPP–2012–
0038 at https://www.regulations.gov in
document ‘‘Spiromesifen: HumanHealth Risk Assessment for Request for
Tolerance Without U.S. Registration in/
on Tea’’ on pp.15–19.
Further information regarding EPA
standard assumptions and generic
inputs for residential exposures may be
found at
https://www.epa.gov/pesticides/science/
USEPA-OPP-HED_Residential%20
SOPs_Oct2012.pdf.
4. Cumulative effects from substances
with a common mechanism of toxicity.
Section 408(b)(2)(D)(v) of FFDCA
requires that, when considering whether
to establish, modify, or revoke a
tolerance, the Agency consider
‘‘available information’’ concerning the
cumulative effects of a particular
pesticide’s residues and ‘‘other
substances that have a common
mechanism of toxicity.’’
EPA has not found spiromesifen to
share a common mechanism of toxicity
with any other substances, and
spiromesifen does not appear to
produce a toxic metabolite produced by
other substances. For the purposes of
this tolerance action, therefore, EPA has
assumed that spiromesifen does not
have a common mechanism of toxicity
with other substances. For information
regarding EPA’s efforts to determine
which chemicals have a common
mechanism of toxicity and to evaluate
the cumulative effects of such
chemicals, see EPA’s Web site at
https://www.epa.gov/pesticides/
cumulative.
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D. Safety Factor for Infants and
Children
E. Aggregate Risks and Determination of
Safety
1. In general. Section 408(b)(2)(C) of
FFDCA provides that EPA shall apply
an additional tenfold (10X) margin of
safety for infants and children in the
case of threshold effects to account for
prenatal and postnatal toxicity and the
completeness of the database on toxicity
and exposure unless EPA determines
based on reliable data that a different
margin of safety will be safe for infants
and children. This additional margin of
safety is commonly referred to as the
FQPA Safety Factor (SF). In applying
this provision, EPA either retains the
default value of 10X, or uses a different
additional safety factor when reliable
data available to EPA support the choice
of a different factor.
2. Prenatal and postnatal sensitivity.
There is no evidence of increased
susceptibility of rats or rabbits following
in utero and/or postnatal exposure to
spiromesifen. In the prenatal
developmental toxicity studies in rats
and rabbits and in the 2-generation
reproduction study in rats,
developmental toxicity to the offspring
occurred at equivalent or higher doses
than parental toxicity.
3. Conclusion. EPA has determined
that reliable data show the safety of
infants and children would be
adequately protected if the FQPA SF
were reduced to 1X. That decision is
based on the following findings:
i. The toxicity database for
spiromesifen is complete.
ii. There is no indication that
spiromesifen is a neurotoxic chemical
and there is no need for a
developmental neurotoxicity study or
additional UFs to account for
neurotoxicity.
iii. There is no evidence that
spiromesifen results in increased
susceptibility in in utero rats or rabbits
in the prenatal developmental studies or
in young rats in the 2-generation
reproduction study.
iv. There are no residual uncertainties
identified in the exposure databases.
The dietary food exposure assessments
were performed based on 100% CT and
tolerance-level residues. EPA made
conservative (protective) assumptions in
the ground and surface water modeling
used to assess exposure to spiromesifen
in drinking water. EPA used similarly
conservative assumptions to assess
postapplication exposure of children as
well as incidental oral exposure of
toddlers. These assessments will not
underestimate the exposure and risks
posed by spiromesifen.
EPA determines whether acute and
chronic dietary pesticide exposures are
safe by comparing aggregate exposure
estimates to the acute PAD (aPAD) and
chronic PAD (cPAD). For linear cancer
risks, EPA calculates the lifetime
probability of acquiring cancer given the
estimated aggregate exposure. Short-,
intermediate-, and chronic-term risks
are evaluated by comparing the
estimated aggregate food, water, and
residential exposure to the appropriate
PODs to ensure that an adequate MOE
exists.
1. Acute risk. An acute aggregate risk
assessment takes into account acute
exposure estimates from dietary
consumption of food and drinking
water. No adverse effect resulting from
a single oral exposure was identified
and no acute dietary endpoint was
selected. Therefore, spiromesifen 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 spiromesifen
from food and water will utilize 78% of
the cPAD for all infants (<1 year old),
the population group receiving the
greatest exposure. Based on the
explanation in Unit III.C.3., regarding
residential use patterns, chronic
residential exposure to residues of
spiromesifen is not expected.
3. Short-term risk. Short-term
aggregate exposure takes into account
short-term residential exposure plus
chronic exposure to food and water
(considered to be a background
exposure level). Because no short-term
adverse effect was identified,
spiromesifen is not expected to pose a
short-term risk.
4. Intermediate-term risk.
Intermediate-term aggregate exposure
takes into account intermediate-term
residential exposure plus chronic
exposure to food and water (considered
to be a background exposure level).
Because no intermediate-term adverse
effect was identified, spiromesifen is not
expected to pose an intermediate-term
risk.
5. Aggregate cancer risk for U.S.
population. Based on the lack of
evidence of carcinogenicity in two
adequate rodent carcinogenicity studies,
spiromesifen is not expected to pose a
cancer risk to humans.
6. Determination of safety. Based on
these risk assessments, EPA concludes
that there is a reasonable certainty that
no harm will result to the general
population or to infants and children
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from aggregate exposure to spiromesifen
residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodology
(high-performance liquid
chromatography/tandem mass
spectroscopy (HPLC/MS/MS)/Method
BS001–P09–01 is available to enforce
the tolerance expression.
The method may be requested from:
Chief, Analytical Chemistry Branch,
Environmental Science Center, 701
Mapes Rd., Ft. Meade, MD 20755–5350;
telephone number: (410) 305–2905;
email address:
residuemethods@epa.gov.
B. International Residue Limits
In making its tolerance decisions, EPA
seeks to harmonize U.S. tolerances with
international standards whenever
possible, consistent with U.S. food
safety standards and agricultural
practices. EPA considers the
international maximum residue limits
(MRLs) established by the Codex
Alimentarius Commission (Codex), as
required by FFDCA section 408(b)(4).
The Codex Alimentarius is a joint
United Nations Food and Agriculture
Organization/World Health
Organization food standards program,
and it is recognized as an international
food safety standards-setting
organization in trade agreements to
which the United States is a party. EPA
may establish a tolerance that is
different from a Codex MRL; however,
FFDCA section 408(b)(4) requires that
EPA explain the reasons for departing
from the Codex level.
The Codex has not established a MRL
for spiromesifen in/on dried tea.
C. Response to Comments
There were no comments received.
D. Revisions to Petitioned-For
Tolerances
Based on the analysis of the data
supporting the petition, EPA has revised
the proposed tolerance for tea, dried
from 50 ppm to 40 ppm. EPA revised
this tolerance level based on the
highest-average field trial residue level
and a processing factor for black tea.
srobinson on DSK4SPTVN1PROD with
V. Conclusion
Therefore, tolerances are established
for residues of spiromesifen, (2-oxo-3(2,4,6-trimethylphenyl)-1oxaspiro[4.4]non-3-en-4-yl 3,3dimethylbutanoate) its enol metabolite
(4-hydroxy-3-(2,4,6-trimethylphenyl)-1oxaspiro[4.4]non-3-en-2-one), in or on
tea, dried at 40 ppm.
VerDate Mar<15>2010
17:12 Jan 15, 2013
Jkt 229001
VI. Statutory and Executive Order
Reviews
This final rule establishes tolerances
under FFDCA section 408(d) in
response to a petition submitted to the
Agency. The Office of Management and
Budget (OMB) has exempted these types
of actions from review under Executive
Order 12866, entitled ‘‘Regulatory
Planning and Review’’ (58 FR 51735,
October 4, 1993). Because this final rule
has been exempted from review under
Executive Order 12866, this final rule is
not subject to Executive Order 13211,
entitled ‘‘Actions Concerning
Regulations That Significantly Affect
Energy Supply, Distribution, or Use’’ (66
FR 28355, May 22, 2001) or Executive
Order 13045, entitled ‘‘Protection of
Children from Environmental Health
Risks and Safety Risks’’ (62 FR 19885,
April 23, 1997). This final rule does not
contain any information collections
subject to OMB approval under the
Paperwork Reduction Act (PRA) (44
U.S.C. 3501 et seq.), nor does it require
any special considerations under
Executive Order 12898, entitled
‘‘Federal Actions to Address
Environmental Justice in Minority
Populations and Low-Income
Populations’’ (59 FR 7629, February 16,
1994).
Since tolerances and exemptions that
are established on the basis of a petition
under FFDCA section 408(d), such as
the tolerance in this final rule, do not
require the issuance of a proposed rule,
the requirements of the Regulatory
Flexibility Act (RFA) (5 U.S.C. 601 et
seq.), do not apply.
This final rule directly regulates
growers, food processors, food handlers,
and food retailers, not States or tribes,
nor does this action alter the
relationships or distribution of power
and responsibilities established by
Congress in the preemption provisions
of FFDCA section 408(n)(4). As such,
the Agency has determined that this
action will not have a substantial direct
effect on States or tribal governments,
on the relationship between the national
government and the States or tribal
governments, or on the distribution of
power and responsibilities among the
various levels of government or between
the Federal Government and Indian
tribes. Thus, the Agency has determined
that Executive Order 13132, entitled
‘‘Federalism’’ (64 FR 43255, August 10,
1999) and Executive Order 13175,
entitled ‘‘Consultation and Coordination
with Indian Tribal Governments’’ (65 FR
67249, November 9, 2000) do not apply
to this final rule. In addition, this final
rule does not impose any enforceable
duty or contain any unfunded mandate
PO 00000
Frm 00027
Fmt 4700
Sfmt 9990
as described under Title II of the
Unfunded Mandates Reform Act of 1995
(UMRA) (2 U.S.C. 1501 et seq.).
This action does not involve any
technical standards that would require
Agency consideration of voluntary
consensus standards pursuant to section
12(d) of the National Technology
Transfer and Advancement Act of 1995
(NTTAA) (15 U.S.C. 272 note).
VII. Congressional Review Act
Pursuant to the Congressional Review
Act (5 U.S.C. 801 et seq.), EPA will
submit a report containing this rule and
other required information to the U.S.
Senate, the U.S. House of
Representatives, and the Comptroller
General of the United States prior to
publication of the rule in the Federal
Register. This action is not a ‘‘major
rule’’ as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
Dated: January 4, 2013.
Lois Rossi,
Director, Registration 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. In § 180.607, the table in paragraph
(a)(1) is amended by adding,
alphabetically, the commodity ‘‘Tea,
dry’’ to read as follows:
■
§ 180.607 Spiromesifen; tolerances for
residues.
(a) General. (1) * * *
Parts per
million
Commodity
*
*
*
*
Tea, dry ......................................
*
*
*
*
*
*
*
*
*
[FR Doc. 2013–00728 Filed 1–15–13; 8:45 am]
BILLING CODE 6560–50–P
E:\FR\FM\16JAR1.SGM
16JAR1
*
40
*
Agencies
[Federal Register Volume 78, Number 11 (Wednesday, January 16, 2013)]
[Rules and Regulations]
[Pages 3333-3337]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-00728]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2012-0038; FRL-9374-3]
Spiromesifen; Pesticide Tolerances
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes tolerances for residues of
spiromesifen in or on tea, dried. Bayer CropScience requested these
tolerances under the Federal Food, Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective January 16, 2013. Objections and
requests for hearings must be received on or before March 18, 2013, and
must be filed in accordance with the instructions provided in 40 CFR
part 178 (see also Unit I.C. of the SUPPLEMENTARY INFORMATION).
ADDRESSES: The docket for this action, identified by docket
identification (ID) number EPA-HQ-OPP-2012-0038, is available at https://www.regulations.gov or at the Office of Pesticide Programs Regulatory
Public Docket (OPP Docket) in the Environmental Protection Agency
Docket Center (EPA/DC), EPA West Bldg., Rm. 3334, 1301 Constitution
Ave. NW., Washington, DC 20460-0001. The Public Reading Room is open
from 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding legal
holidays. The telephone number for the Public Reading Room is (202)
566-1744, and the telephone number for the OPP Docket is (703) 305-
5805. Please review the visitor instructions and additional information
about the docket available at https://www.epa.gov/dockets.
FOR FURTHER INFORMATION CONTACT: Jennifer Gaines, Registration Division
(7505P), Office of Pesticide Programs, Environmental Protection Agency,
1200 Pennsylvania Ave. NW., Washington, DC 20460-0001; telephone
number: (703) 305-5967; email address: Gaines.Jennifer@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
A. Does this action apply to me?
You may be potentially affected by this action if you are an
agricultural producer, food manufacturer, or pesticide manufacturer.
The following list of North American Industrial Classification System
(NAICS) codes is not intended to be exhaustive, but rather provides a
guide to help readers determine whether this document applies to them.
Potentially affected entities may include:
Crop production (NAICS code 111).
Animal production (NAICS code 112).
Food manufacturing (NAICS code 311).
Pesticide manufacturing (NAICS code 32532).
B. How can I get electronic access to other related information?
You may access a frequently updated electronic version of EPA's
tolerance regulations at 40 CFR part 180 through the Government
Printing Office's e-CFR site at https://ecfr.gpoaccess.gov/cgi/t/text/text-idx?&c=ecfr&tpl=/ecfrbrowse/Title40/40tab_02.tpl.
C. How can I file an objection or hearing request?
Under FFDCA section 408(g), 21 U.S.C. 346a, any person may file an
objection to any aspect of this regulation and may also request a
hearing on those objections. You must file your objection or request a
hearing on this regulation in accordance with the instructions provided
in 40 CFR part 178. To ensure proper receipt by EPA, you must identify
docket ID number EPA-HQ-OPP-2012-0038 in the subject line on the first
page of your submission. All objections and requests for a hearing must
be in writing, and must be received by the Hearing Clerk on or before
March 18, 2013. Addresses for mail and hand delivery of objections and
hearing requests are provided in 40 CFR 178.25(b).
In addition to filing an objection or hearing request with the
Hearing Clerk as described in 40 CFR part 178, please submit a copy of
the filing (excluding any Confidential Business Information (CBI)) for
inclusion in the public docket. Information not marked confidential
pursuant to 40 CFR part 2 may be disclosed publicly by EPA without
prior notice. Submit the non-CBI copy of your objection or hearing
request, identified by docket ID number EPA-HQ-OPP-2012-0038, by one of
the following methods:
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the online instructions for submitting comments. Do not submit
electronically any information you consider to be Confidential Business
Information (CBI) or other information whose disclosure is restricted
by statute.
Mail: OPP Docket, Environmental Protection Agency Docket
Center (EPA/
[[Page 3334]]
DC), (28221T), 1200 Pennsylvania Ave., NW., Washington, DC 20460-0001.
Hand Delivery: To make special arrangements for hand
delivery or delivery of boxed information, please follow the
instructions at https://www.epa.gov/dockets/contacts.htm.
Additional instructions on commenting or visiting the docket, along
with more information about dockets generally, is available at https://www.epa.gov/dockets.
II. Summary of Petitioned-For Tolerance
In the Federal Register of April 4, 2012 (77 FR 20334-20337) (FRL-
9340-4), EPA issued a document pursuant to FFDCA section 408(d)(3), 21
U.S.C. 346a(d)(3), announcing the filing of a pesticide petition (PP
1E7924) by Bayer CropScience, P.O. Box 12014, 2 T.W. Alexander Dr.,
Research Triangle Park, N.C. 27709. The petition requested that 40 CFR
180.607 be amended by establishing tolerances for residues of
spiromesifen, (2-oxo-3-(2,4,6-trimethylphenyl)-1-oxaspiro[4.4]non-3-en-
4-yl 3,3-dimethylbutanoate) and its enol metabolite (4-hydroxy-3-
(2,4,6-trimethylphenyl)-1-oxaspiro[4.4]non-3-en-2-one), in or on tea,
dried at 50 parts per million (ppm). That document referenced a summary
of the petition prepared by Bayer CropScience, the registrant, which is
available in the docket, https://www.regulations.gov. There were no
comments received in response to the notice of filing. Based upon
review of the data supporting the petition, EPA has changed the
tolerance for tea, dried from 50 ppm to 40 ppm. The reason for this
change is explained in Unit IV.D.
III. Aggregate Risk Assessment and Determination of Safety
Section 408(b)(2)(A)(i) of FFDCA allows EPA to establish a
tolerance (the legal limit for a pesticide chemical residue in or on a
food) only if EPA determines that the tolerance is ``safe.'' Section
408(b)(2)(A)(ii) of FFDCA defines ``safe'' to mean that ``there is a
reasonable certainty that no harm will result from aggregate exposure
to the pesticide chemical residue, including all anticipated dietary
exposures and all other exposures for which there is reliable
information.'' This includes exposure through drinking water and in
residential settings, but does not include occupational exposure.
Section 408(b)(2)(C) of FFDCA requires EPA to give special
consideration to exposure of infants and children to the pesticide
chemical residue in establishing a tolerance and to ``ensure that there
is a reasonable certainty that no harm will result to infants and
children from aggregate exposure to the pesticide chemical residue * *
*.''
Consistent with FFDCA section 408(b)(2)(D), and the factors
specified in FFDCA section 408(b)(2)(D), EPA has reviewed the available
scientific data and other relevant information in support of this
action. EPA has sufficient data to assess the hazards of and to make a
determination on aggregate exposure for spiromesifen including exposure
resulting from the tolerances established by this action. EPA's
assessment of exposures and risks associated with spiromesifen 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.
Spiromesifen was classified as having low acute toxicity via the
oral, dermal and inhalation routes of exposure. It was neither an eye
nor dermal irritant, but showed moderate potential as a skin contact
sensitizer. In short- and long-term animal toxicity tests, the critical
effects observed were loss of body weight, adrenal effects
(discoloration, decrease in fine vesticulation, and the presence of
cytoplasmic eosinophilia in zona fasciculata cells), thyroid effects
(increased thyroid stimulating hormone, increased thyroxine binding
capacity, decreased T3 and T4 levels, colloidal alteration and thyroid
follicular cell hypertrophy), liver effects (increased alkaline
phosphatase, alanine transaminase (ALT) and decreased cholesterol, and
triglycerides), and spleen effects (atrophy, decreased spleen cell
count, and increased macrophages). There were no developmental or
reproductive effects of concern following oral administration of
spiromesifen in rats or rabbits. EPA concluded that spiromesifen is not
likely to be carcinogenic to humans based on a lack of evidence of
cancer in bioassays in rats and mice. There were no in vivo or in vitro
mutagenic effects in mutagenicity testing with spiromesifen.
Spiromesifen is not considered a neurotoxic chemical based on the
chemical's mode of action and the available data from multiple studies,
including acute and subchronic neurotoxicity studies.
Specific information on the studies received and the nature of the
adverse effects caused by spiromesifen as well as the no-observed-
adverse-effect-level (NOAEL) and the lowest-observed-adverse-effect-
level (LOAEL) from the toxicity studies can be found at https://www.regulations.gov in document ``Spiromesifen: Human-Health Risk
Assessment for Request for Tolerance without U.S. Registration in/on
Tea.'' at pages 20 to 24 in docket ID number EPA-HQ-OPP-2012-0038.
B. Toxicological Points of Departure/Levels of Concern
Once a pesticide's toxicological profile is determined, EPA
identifies toxicological points of departure (POD) and levels of
concern to use in evaluating the risk posed by human exposure to the
pesticide. For hazards that have a threshold below which there is no
appreciable risk, the toxicological POD is used as the basis for
derivation of reference values for risk assessment. PODs are developed
based on a careful analysis of the doses in each toxicological study to
determine the dose at which no adverse effects are observed (the NOAEL)
and the lowest dose at which adverse effects of concern are identified
(the LOAEL). Uncertainty/safety factors are used in conjunction with
the POD to calculate a safe exposure level--generally referred to as a
population-adjusted dose (PAD) or a reference dose (RfD)--and a safe
margin of exposure (MOE). For non-threshold risks, the Agency assumes
that any amount of exposure will lead to some degree of risk. Thus, the
Agency estimates risk in terms of the probability of an occurrence of
the adverse effect expected in a lifetime. For more information on the
general principles EPA uses in risk characterization and a complete
description of the risk assessment process, see https://www.epa.gov/pesticides/factsheets/riskassess.htm.
A summary of the toxicological endpoints for spiromesifen used for
human risk assessment is shown in Table 1 of this unit.
[[Page 3335]]
Table 1--Summary of Toxicological Doses and Endpoints for Spiromesifen for Use in Human Health Risk Assessment
----------------------------------------------------------------------------------------------------------------
Point of departure
Exposure/scenario and uncertainty/ RfD, PAD, LOC for Study and toxicological effects
safety factors risk assessment
----------------------------------------------------------------------------------------------------------------
Acute dietary (General population Not applicable...... None............... An endpoint of concern
including infants and children). attributable to a single dose was
not identified. An aRfD was not
established.
Chronic dietary (All populations) NOAEL= 2.2 mg/kg/day Chronic RfD = 0.022 2-generation reproduction study in
UFA = 10X........... mg/kg/day.. rats. The parental systemic LOAEL
UFH = 10X........... cPAD = 0.022 mg/kg/ = 8.81 mg/kg/day based on
FQPA SF = 1X........ day. significantly decreased spleen
weight (absolute and relative in
parental females and F1 males)
and significantly decreased
growing ovarian follicles in
females.
Dermal short-term (1 to 30 days) None................ None............... No dermal, systemic, or
and Intermediate-term (1 to 6 developmental concerns.
months).
Inhalation short-term (1 to 30 Inhalation (or oral) LOC for MOE = 30 Subchronic (30-day) inhalation
days) and Intermediate-Term (1 study NOAEL = 21.1 (3X interspecies toxicity study in rats & 5-day
to 6 months). mg/kg/day and 10X inhalation toxicity study in
(inhalation intraspecies rats.
absorption rate = extrapolations). LOAEL (5-day) = 134.2 mg/kg/day
100%). based on the clinical signs
HEC = 0.06 mg/L..... (tremors, clonic-tonic
HED = 1.42 mg/kg/bw/ convulsions, reduced activity,
day. bradypnea, labored breathing,
vocalization, avoidance reaction,
giddiness, piloerection, limp,
emaciation, cyanosis, squatted
posture, apathy, salivation,
gross pathology (dark red areas
or foci in the lungs, bloated
stomachs, and pale liver), and
decreased spleen weights.
------------------------------------------------------------------------------
Cancer (Oral, dermal, inhalation) Spiromesifen has been classified as ``not likely to be carcinogenic to
humans.''
----------------------------------------------------------------------------------------------------------------
FQPA SF = Food Quality Protection Act Safety Factor. LOAEL = lowest-observed-adverse-effect-level. LOC = level
of concern. mg/kg/day = milligram/kilogram/day. MOE = margin of exposure. NOAEL = no-observed-adverse-effect-
level. PAD = population-adjusted dose (a = acute, c = chronic). RfD = reference dose. UF = uncertainty factor.
UFA = extrapolation from animal to human (interspecies). UFH = potential variation in sensitivity among
members of the human population (intraspecies). HEC = human human-equivalent concentration. HED = human human-
equivalent dose.
C. Exposure Assessment
1. Dietary exposure from food and feed uses. In evaluating dietary
exposure to spiromesifen, EPA considered exposure under the petitioned-
for tolerances as well as all existing spiromesifen tolerances in 40
CFR 180.607. EPA assessed dietary exposures from spiromesifen 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 spiromesifen; 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 USDA 1994-1996
and 1998 Cumulative Survey of Food Intake by Individuals, CSFII. As to
residue levels in food, EPA assumed tolerance-level residues for all
commodities except for the leafy-green and leafy-Brassica vegetable
subgroups (4A, 4B, and 5B), spearmint and peppermint tops and oil, and
tea. For these commodities, residues were also based on tolerance
levels; however, a correction factor was applied to the tolerance
levels to account for BSN 2060-4-hydroxymethyl metabolites of
spiromesifen included in the risk assessment for these commodities. The
additional metabolites, BSN 2060-4-hydroxymethyl and BSN 2060-4-
hydroxymethyl-glucoside, were observed in the metabolism studies of
lettuce only, comprising 21% of the total radioactive residues. Since
the toxicity of the BSN 2060-4-hydroxymethyl metabolites is expected to
be comparable to the parent compound, it was included in the risk
assessment for leafy crops (including tea, subgroups 4A, 4B, and 5B and
spearmint and peppermint tops and oil). To account for this additional
exposure, the recommended tolerance level was multiplied by a
correction factor of 1.3X, where 1.3 = (Metabolites in Risk
Assessment)/(Metabolites in Tolerance Expression; concentrations from
the lettuce metabolism study). Dietary Exposure Evaluation Model (DEEM)
7.81 default processing factors and 100 percent crop treated were
assumed.
iii. Cancer. Based on the data summarized in Unit III.A., EPA has
concluded that spiromesifen does not pose a cancer risk to humans.
Therefore, a dietary exposure assessment for the purpose of assessing
cancer risk is unnecessary.
iv. Anticipated residue and percent crop treated (PCT) information.
EPA did not use anticipated residue and/or PCT information in the
dietary assessment for spiromesifen. As discussed in Unit III.C.1.ii.,
for the leafy-greens and leafy Brassica greens subgroups (4A, 4B, and
5B) and spearmint and peppermint tops and oil, and tea, the residue
values were adjusted upward to account for the metabolite BSN 2060-4-
hydroxymethyl (free and conjugated).
2. Dietary exposure from drinking water. The Agency used screening
level water exposure models in the dietary exposure analysis and risk
assessment for spiromesifen in drinking water. These simulation models
take into account data on the physical, chemical, and fate/transport
characteristics of spiromesifen. 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 Provisional Cranberry Model and Screening
Concentration in Ground Water (SCI-GROW) models the estimated drinking
water concentrations (EDWCs) of spiromesifen for chronic exposures for
non-cancer assessments are estimated to be 188 ppb for surface water
and 86 ppb for ground water.
Modeled estimates of drinking water concentrations were directly
entered
[[Page 3336]]
into the dietary exposure model. For chronic dietary risk assessment,
the water concentration of value 188 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).
Spiromesifen is currently registered for the following uses that
could result in residential exposures: Indoor and outdoor uses for the
control of mites and whiteflies on ornamental plants in and around
areas such as parks, golf courses, recreational areas, and residential
and commercial buildings. EPA assessed residential exposure using the
following assumptions: Residential handler inhalation exposure was
assessed for adults mixing/loading/applying spiromesifen using handheld
equipment to ornamentals. Details for the residential risk exposure and
risk assessment are contained in the EPA public docket EPA-HQ-OPP-2012-
0038 at https://www.regulations.gov in document ``Spiromesifen: Human-
Health Risk Assessment for Request for Tolerance Without U.S.
Registration in/on Tea'' on pp.15-19.
Further information regarding EPA standard assumptions and generic
inputs for residential exposures may be found at https://www.epa.gov/pesticides/science/USEPA-OPP-HED_Residential%20SOPs_Oct2012.pdf.
4. Cumulative effects from substances with a common mechanism of
toxicity. Section 408(b)(2)(D)(v) of FFDCA requires that, when
considering whether to establish, modify, or revoke a tolerance, the
Agency consider ``available information'' concerning the cumulative
effects of a particular pesticide's residues and ``other substances
that have a common mechanism of toxicity.''
EPA has not found spiromesifen to share a common mechanism of
toxicity with any other substances, and spiromesifen does not appear to
produce a toxic metabolite produced by other substances. For the
purposes of this tolerance action, therefore, EPA has assumed that
spiromesifen does not have a common mechanism of toxicity with other
substances. For information regarding EPA's efforts to determine which
chemicals have a common mechanism of toxicity and to evaluate the
cumulative effects of such chemicals, see EPA's Web site at https://www.epa.gov/pesticides/cumulative.
D. Safety Factor for Infants and Children
1. In general. Section 408(b)(2)(C) of FFDCA provides that EPA
shall apply an additional tenfold (10X) margin of safety for infants
and children in the case of threshold effects to account for prenatal
and postnatal toxicity and the completeness of the database on toxicity
and exposure unless EPA determines based on reliable data that a
different margin of safety will be safe for infants and children. This
additional margin of safety is commonly referred to as the FQPA Safety
Factor (SF). In applying this provision, EPA either retains the default
value of 10X, or uses a different additional safety factor when
reliable data available to EPA support the choice of a different
factor.
2. Prenatal and postnatal sensitivity. There is no evidence of
increased susceptibility of rats or rabbits following in utero and/or
postnatal exposure to spiromesifen. In the prenatal developmental
toxicity studies in rats and rabbits and in the 2-generation
reproduction study in rats, developmental toxicity to the offspring
occurred at equivalent or higher doses than parental toxicity.
3. Conclusion. EPA has determined that reliable data show the
safety of infants and children would be adequately protected if the
FQPA SF were reduced to 1X. That decision is based on the following
findings:
i. The toxicity database for spiromesifen is complete.
ii. There is no indication that spiromesifen is a neurotoxic
chemical and there is no need for a developmental neurotoxicity study
or additional UFs to account for neurotoxicity.
iii. There is no evidence that spiromesifen results in increased
susceptibility in in utero rats or rabbits in the prenatal
developmental studies or in young rats in the 2-generation reproduction
study.
iv. There are no residual uncertainties identified in the exposure
databases. The dietary food exposure assessments were performed based
on 100% CT and tolerance-level residues. EPA made conservative
(protective) assumptions in the ground and surface water modeling used
to assess exposure to spiromesifen in drinking water. EPA used
similarly conservative assumptions to assess postapplication exposure
of children as well as incidental oral exposure of toddlers. These
assessments will not underestimate the exposure and risks posed by
spiromesifen.
E. Aggregate Risks and Determination of Safety
EPA determines whether acute and chronic dietary pesticide
exposures are safe by comparing aggregate exposure estimates to the
acute PAD (aPAD) and chronic PAD (cPAD). For linear cancer risks, EPA
calculates the lifetime probability of acquiring cancer given the
estimated aggregate exposure. Short-, intermediate-, and chronic-term
risks are evaluated by comparing the estimated aggregate food, water,
and residential exposure to the appropriate PODs to ensure that an
adequate MOE exists.
1. Acute risk. An acute aggregate risk assessment takes into
account acute exposure estimates from dietary consumption of food and
drinking water. No adverse effect resulting from a single oral exposure
was identified and no acute dietary endpoint was selected. Therefore,
spiromesifen 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
spiromesifen from food and water will utilize 78% of the cPAD for all
infants (<1 year old), the population group receiving the greatest
exposure. Based on the explanation in Unit III.C.3., regarding
residential use patterns, chronic residential exposure to residues of
spiromesifen is not expected.
3. Short-term risk. Short-term aggregate exposure takes into
account short-term residential exposure plus chronic exposure to food
and water (considered to be a background exposure level). Because no
short-term adverse effect was identified, spiromesifen is not expected
to pose a short-term risk.
4. Intermediate-term risk. Intermediate-term aggregate exposure
takes into account intermediate-term residential exposure plus chronic
exposure to food and water (considered to be a background exposure
level). Because no intermediate-term adverse effect was identified,
spiromesifen is not expected to pose an intermediate-term risk.
5. Aggregate cancer risk for U.S. population. Based on the lack of
evidence of carcinogenicity in two adequate rodent carcinogenicity
studies, spiromesifen is not expected to pose a cancer risk to humans.
6. Determination of safety. Based on these risk assessments, EPA
concludes that there is a reasonable certainty that no harm will result
to the general population or to infants and children
[[Page 3337]]
from aggregate exposure to spiromesifen residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodology (high-performance liquid
chromatography/tandem mass spectroscopy (HPLC/MS/MS)/Method BS001-P09-
01 is available to enforce the tolerance expression.
The method may be requested from: Chief, Analytical Chemistry
Branch, Environmental Science Center, 701 Mapes Rd., Ft. Meade, MD
20755-5350; telephone number: (410) 305-2905; email address:
residuemethods@epa.gov.
B. International Residue Limits
In making its tolerance decisions, EPA seeks to harmonize U.S.
tolerances with international standards whenever possible, consistent
with U.S. food safety standards and agricultural practices. EPA
considers the international maximum residue limits (MRLs) established
by the Codex Alimentarius Commission (Codex), as required by FFDCA
section 408(b)(4). The Codex Alimentarius is a joint United Nations
Food and Agriculture Organization/World Health Organization food
standards program, and it is recognized as an international food safety
standards-setting organization in trade agreements to which the United
States is a party. EPA may establish a tolerance that is different from
a Codex MRL; however, FFDCA section 408(b)(4) requires that EPA explain
the reasons for departing from the Codex level.
The Codex has not established a MRL for spiromesifen in/on dried
tea.
C. Response to Comments
There were no comments received.
D. Revisions to Petitioned-For Tolerances
Based on the analysis of the data supporting the petition, EPA has
revised the proposed tolerance for tea, dried from 50 ppm to 40 ppm.
EPA revised this tolerance level based on the highest-average field
trial residue level and a processing factor for black tea.
V. Conclusion
Therefore, tolerances are established for residues of spiromesifen,
(2-oxo-3-(2,4,6-trimethylphenyl)-1-oxaspiro[4.4]non-3-en-4-yl 3,3-
dimethylbutanoate) its enol metabolite (4-hydroxy-3-(2,4,6-
trimethylphenyl)-1-oxaspiro[4.4]non-3-en-2-one), in or on tea, dried at
40 ppm.
VI. Statutory and Executive Order Reviews
This final rule establishes tolerances under FFDCA section 408(d)
in response to a petition submitted to the Agency. The Office of
Management and Budget (OMB) has exempted these types of actions from
review under Executive Order 12866, entitled ``Regulatory Planning and
Review'' (58 FR 51735, October 4, 1993). Because this final rule has
been exempted from review under Executive Order 12866, this final rule
is not subject to Executive Order 13211, entitled ``Actions Concerning
Regulations That Significantly Affect Energy Supply, Distribution, or
Use'' (66 FR 28355, May 22, 2001) or Executive Order 13045, entitled
``Protection of Children from Environmental Health Risks and Safety
Risks'' (62 FR 19885, April 23, 1997). This final rule does not contain
any information collections subject to OMB approval under the Paperwork
Reduction Act (PRA) (44 U.S.C. 3501 et seq.), nor does it require any
special considerations under Executive Order 12898, entitled ``Federal
Actions to Address Environmental Justice in Minority Populations and
Low-Income Populations'' (59 FR 7629, February 16, 1994).
Since tolerances and exemptions that are established on the basis
of a petition under FFDCA section 408(d), such as the tolerance in this
final rule, do not require the issuance of a proposed rule, the
requirements of the Regulatory Flexibility Act (RFA) (5 U.S.C. 601 et
seq.), do not apply.
This final rule directly regulates growers, food processors, food
handlers, and food retailers, not States or tribes, nor does this
action alter the relationships or distribution of power and
responsibilities established by Congress in the preemption provisions
of FFDCA section 408(n)(4). As such, the Agency has determined that
this action will not have a substantial direct effect on States or
tribal governments, on the relationship between the national government
and the States or tribal governments, or on the distribution of power
and responsibilities among the various levels of government or between
the Federal Government and Indian tribes. Thus, the Agency has
determined that Executive Order 13132, entitled ``Federalism'' (64 FR
43255, August 10, 1999) and Executive Order 13175, entitled
``Consultation and Coordination with Indian Tribal Governments'' (65 FR
67249, November 9, 2000) do not apply to this final rule. In addition,
this final rule does not impose any enforceable duty or contain any
unfunded mandate as described under Title II of the Unfunded Mandates
Reform Act of 1995 (UMRA) (2 U.S.C. 1501 et seq.).
This action does not involve any technical standards that would
require Agency consideration of voluntary consensus standards pursuant
to section 12(d) of the National Technology Transfer and Advancement
Act of 1995 (NTTAA) (15 U.S.C. 272 note).
VII. Congressional Review Act
Pursuant to the Congressional Review Act (5 U.S.C. 801 et seq.),
EPA will submit a report containing this rule and other required
information to the U.S. Senate, the U.S. House of Representatives, and
the Comptroller General of the United States prior to publication of
the rule in the Federal Register. This action is not a ``major rule''
as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection, Administrative practice and procedure,
Agricultural commodities, Pesticides and pests, Reporting and
recordkeeping requirements.
Dated: January 4, 2013.
Lois Rossi,
Director, Registration Division, Office of Pesticide Programs.
Therefore, 40 CFR chapter I is amended as follows:
PART 180--[AMENDED]
0
1. The authority citation for part 180 continues to read as follows:
Authority: 21 U.S.C. 321(q), 346a and 371.
0
2. In Sec. 180.607, the table in paragraph (a)(1) is amended by
adding, alphabetically, the commodity ``Tea, dry'' to read as follows:
Sec. 180.607 Spiromesifen; tolerances for residues.
(a) General. (1) * * *
------------------------------------------------------------------------
Parts per
Commodity million
------------------------------------------------------------------------
* * * * *
Tea, dry.................................................... 40
* * * * *
------------------------------------------------------------------------
* * * * *
[FR Doc. 2013-00728 Filed 1-15-13; 8:45 am]
BILLING CODE 6560-50-P