Sedaxane; Pesticide Tolerances, 33744-33748 [2013-13267]
Download as PDF
33744
Federal Register / Vol. 78, No. 108 / Wednesday, June 5, 2013 / Rules and Regulations
specified below is to be determined by
measuring only the sum of imidacloprid
(1-[6-chloro-3-pyridinyl)methyl]-Nnitro-2-imidazolidinimine) and its
metabolites containing the 6chloropyridinyl moiety, calculated as
the stoichiometric equivalent of
imidacloprid. These tolerances will
Commodity
expire and are revoked on the dates
specified in the following table:
Parts per million
Sugarcane, cane ................................................................................................
Sugarcane, molasses ........................................................................................
*
*
*
*
*
6.0
50
DC 20460–0001; telephone number:
(703) 308–0034; email address:
garvie.heather@epa.gov.
[FR Doc. 2013–13203 Filed 6–4–13; 8:45 am]
BILLING CODE 6560–50–P
SUPPLEMENTARY INFORMATION:
ENVIRONMENTAL PROTECTION
AGENCY
I. General Information
40 CFR Part 180
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).
A. Does this action apply to me?
[EPA–HQ–OPP–2012–0704; FRL–9386–9]
Sedaxane; Pesticide Tolerances
Environmental Protection
Agency (EPA).
ACTION: Final rule.
TKELLEY on DSK3SPTVN1PROD with RULES
AGENCY:
SUMMARY: This regulation establishes
tolerances for residues of sedaxane in or
on multiple commodities which are
identified and discussed later in this
document. Syngenta Crop Protection,
LLC requested these tolerances under
the Federal Food, Drug, and Cosmetic
Act (FFDCA).
DATES: This regulation is effective June
5, 2013. Objections and requests for
hearings must be received on or before
August 5, 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–2012–0704, 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:
Heather Garvie, Registration Division
(7505P), Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave. NW., Washington,
VerDate Mar<15>2010
16:07 Jun 04, 2013
Jkt 229001
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://www.ecfr.gov/cgi-bin/textidx?&c=ecfr&tpl=/ecfrbrowse/Title40/
40tab_02.tpl.
C. How can I file an objection or hearing
request?
Under FFDCA section 408(g), 21
U.S.C. 346a, any person may file an
objection to any aspect of this regulation
and may also request a hearing on those
objections. You must file your objection
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–2012–0704 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 August 5, 2013. Addresses for
mail and hand delivery of objections
and hearing requests are provided in 40
CFR 178.25(b).
PO 00000
Frm 00056
Fmt 4700
Sfmt 4700
Expiration/revocation date
12/31/15
12/31/15
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–
2012–0704, by one of the following
methods:
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the online
instructions for submitting comments.
Do not submit electronically any
information you consider to be CBI or
other information whose disclosure is
restricted by statute.
• Mail: OPP Docket, Environmental
Protection Agency Docket Center (EPA/
DC), (28221T), 1200 Pennsylvania Ave.
NW., Washington, DC 20460–0001.
• Hand Delivery: To make special
arrangements for hand delivery or
delivery of boxed information, please
follow the instructions at https://
www.epa.gov/dockets/contacts.htm.
Additional instructions on commenting
or visiting the docket, along with more
information about dockets generally, is
available at https://www.epa.gov/
dockets.
II. Summary of Petitioned-For
Tolerance
In the Federal Register of September
28, 2012 (77 FR 59578) (FRL–9364–6),
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 2F8071) by
Syngenta Crop Protection, Inc.,
Regulatory Affairs, P.O. Box 18300,
Greensboro, NC 27419–8300. The
petition requested that 40 CFR 180.665
be amended by establishing tolerances
for residues of the fungicide sedaxane,
in or on corn (grain, forage, stover),
popcorn (grain, stover), and corn ears at
0.01 parts per million (ppm); sorghum
(grain, forage, stover) at 0.01 ppm; pea
and bean, dried, shelled, subgroup 6C
(grain, forage, hay) at 0.01 ppm; and
rapeseed, subgroup 20A (grain) at 0.01
ppm. That document referenced a
E:\FR\FM\05JNR1.SGM
05JNR1
Federal Register / Vol. 78, No. 108 / Wednesday, June 5, 2013 / Rules and Regulations
summary of the petition prepared by
Syngenta Crop Protection, Inc., 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
corrected commodity definitions and
recommended additional tolerances.
The reasons for these changes are
explained in Unit IV.C.
TKELLEY on DSK3SPTVN1PROD with RULES
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 sedaxane
including exposure resulting from the
tolerances established by this action.
EPA’s assessment of exposures and risks
associated with sedaxane follows.
A. Toxicological Profile
EPA has evaluated the available
toxicity data and considered its validity,
completeness, and reliability as well as
the relationship of the results of the
studies to human risk. EPA has also
considered available information
concerning the variability of the
sensitivities of major identifiable
subgroups of consumers, including
infants and children. The toxicological
effects reported in the submitted animal
studies such as mitochondrial
disintegration and glycogen depletion in
the liver are consistent with the
VerDate Mar<15>2010
16:07 Jun 04, 2013
Jkt 229001
pesticidal mode of action also being the
mode of toxic action in mammals. The
rat is the most sensitive species tested,
and the main target tissue for sedaxane
is the liver. Sedaxane also caused
thyroid hypertrophy/hyperplasia. In the
acute neurotoxicity (ACN) and subchronic neurotoxicity (SCN) studies,
sedaxane caused decreased activity,
decreased muscle tone, decreased
rearing and decreased grip strength.
There are indications of reproductive
toxicity in rats at the high dose, but
these effects did not result in reduced
fertility. In the rat, no adverse effects in
fetuses were seen in developmental
toxicity studies at maternally toxic
doses. However, in the rabbit, fetal
toxicity was observed at the same doses
as the dams. Offspring effects in the
reproduction study occurred at the same
doses causing parental effects, thus
there was no quantitative increase in
sensitivity in rat pups. Sedaxane is
tumorigenic in the liver in the rat and
mouse, and led to tumors in the thyroid
and uterus in the rat and was classified
as ‘‘likely to be carcinogenic to
humans.’’ Sedaxane was negative in the
mutagenicity studies. The 28-day
dermal study did not show systemic
toxicity at the limit dose of 1,000
milligrams/kilogram/day (mg/kg/day).
Sedaxane has low acute toxicity by the
oral, dermal, and inhalation routes. It is
not a dermal sensitizer, causes no skin
irritation and only slight eye irritation.
Specific information on the studies
received and the nature of the adverse
effects caused by sedaxane as well as
the no-observed-adverse-effect-level
(NOAEL) and the lowest-observedadverse-effect-level (LOAEL) from the
toxicity studies are discussed in the
final rule published in the Federal
Register of June 20, 2012 (77 FR 36919)
(FRL–9345–8).
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
PO 00000
Frm 00057
Fmt 4700
Sfmt 4700
33745
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 sedaxane used for human
risk assessment is discussed in Unit
III.B. of the final rule published in the
Federal Register of June 20, 2012.
C. Exposure Assessment
1. Dietary exposure from food and
feed uses. In evaluating dietary
exposure to sedaxane, EPA considered
exposure under the petitioned-for
tolerances as well as all existing
sedaxane tolerances in 40 CFR 180.665.
EPA assessed dietary exposures from
sedaxane in food as follows:
i. Acute exposure. Quantitative acute
dietary exposure and risk assessments
are performed for a food-use pesticide,
if a toxicological study has indicated the
possibility of an effect of concern
occurring as a result of a 1-day or single
exposure. Such effects were identified
for sedaxane. In estimating acute dietary
exposure, EPA used food consumption
information from the U.S. Department of
Agriculture (USDA) 1994–1996 and
1998 Nationwide Continuing Surveys of
Food Intake by Individuals (CSFII). As
to residue levels in food, EPA
conducted a highly conservative acute
dietary risk assessment which used
tolerance level residues and assumed
100 percent crop treated (PCT) for all
commodities.
ii. Chronic exposure. In conducting
the chronic dietary exposure
assessment, EPA used the food
consumption data from the USDA 1994–
1996 and 1998 CSFII. As to residue
levels in food, EPA conducted a highly
conservative chronic dietary risk
assessment which used tolerance level
residues and assumed 100 PCT for all
commodities.
iii. Cancer. EPA determines whether
quantitative cancer exposure and risk
assessments are appropriate for a fooduse pesticide based on the weight of the
evidence from cancer studies and other
relevant data. If a quantitative cancer
risk assessment is appropriate, cancer
risk may be quantified using a linear or
nonlinear approach. If sufficient
E:\FR\FM\05JNR1.SGM
05JNR1
TKELLEY on DSK3SPTVN1PROD with RULES
33746
Federal Register / Vol. 78, No. 108 / Wednesday, June 5, 2013 / Rules and Regulations
information on the carcinogenic mode
of action is available, a threshold or
nonlinear approach is used and a cancer
RfD is calculated based on an earlier
non-cancer key event. If carcinogenic
mode of action data are not available, or
if the mode of action data determines a
mutagenic mode of action, a default
linear cancer slope factor approach is
utilized. Based on significant tumor
increases in two adequate rodent
carcinogenicity studies and as noted in
Unit III.A., EPA has concluded that
sedaxane should be classified as ‘‘Likely
To Be Carcinogenic to Humans.’’ EPA
used a linear approach to quantify
cancer risk because mode of action data
are not available for sedaxane. EPA
assessed exposure for the purpose of
estimating cancer risk assuming
tolerance-level residues and 100 PCT for
all commodities and included modeled
drinking water estimates.
iv. Anticipated residue PCT
information. EPA did not use
anticipated residue and/or PCT
information in the dietary assessment
for sedaxane. One-hundred PCT was
assumed for all food commodities.
2. Dietary exposure from drinking
water. The Agency used screening level
water exposure models in the dietary
exposure analysis and risk assessment
for sedaxane in drinking water. These
simulation models take into account
data on the physical, chemical, and fate/
transport characteristics of sedaxane.
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 FQPA First Index
Reservoir Screening Tool (FIRST) and
Tier II Pesticide Root Zone Model/
Groundwater (PRZM–GW Version 1.0,
12/11/2012), the estimated drinking
water concentrations (EDWCs) of
sedaxane for acute exposures are
estimated to be 4.1 parts per billion
(ppb) for surface water and 9.9 ppb for
ground water. The water exposures for
the chronic dietary and cancer
assessments are estimated to be 1.2 ppb
for surface water and 8.4 ppb for ground
water.
Modeled estimates of drinking water
concentrations were directly entered
into the dietary exposure model. For
acute dietary risk assessment, the water
concentration value of 9.9 ppb was used
to assess the contribution to drinking
water. For chronic and cancer dietary
risk assessment, the water concentration
value of 8.4 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-
VerDate Mar<15>2010
16:07 Jun 04, 2013
Jkt 229001
occupational, non-dietary exposure
(e.g., for lawn and garden pest control,
indoor pest control, termiticides, and
flea and tick control on pets). Sedaxane
is not registered for any specific use
patterns that would result in residential
exposure.
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 sedaxane to share a common
mechanism of toxicity with any other
substances. For the purposes of this
tolerance action, therefore, EPA has
assumed that sedaxane does not have a
common mechanism of toxicity with
other substances. For information
regarding EPA’s efforts to determine
which chemicals have a common
mechanism of toxicity and to evaluate
the cumulative effects of such
chemicals, see EPA’s Web site at https://
www.epa.gov/pesticides/cumulative.
D. Safety Factor for Infants and
Children
1. In general. Section 408(b)(2)(C) of
FFDCA provides that EPA shall apply
an additional tenfold (10X) margin of
safety for infants and children in the
case of threshold effects to account for
prenatal and postnatal toxicity and the
completeness of the database on toxicity
and exposure unless EPA determines
based on reliable data that a different
margin of safety will be safe for infants
and children. This additional margin of
safety is commonly referred to as the
Food Quality Protection Act (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 for increased
susceptibility following prenatal and/or
postnatal exposures to sedaxane based
on effects seen in developmental
toxicity studies in rabbits or rats. There
was no evidence of increased
susceptibility in a 2-generation
reproduction study in rats following
prenatal or postnatal exposure to
sedaxane. Clear NOAELs/LOAELs were
established for the developmental
effects seen in rats and rabbits as well
as for the offspring effects seen in the 2generation reproduction study. The
dose-response relationship for the
PO 00000
Frm 00058
Fmt 4700
Sfmt 4700
effects of concern is well characterized.
The NOAEL used for the acute dietary
risk assessment (30 mg/kg/day), based
on effects observed in the ACN study, is
protective of the developmental and
offspring effects seen in rabbits and rats
(NOAELs of 100–200 mg/kg/day).
In addition, there is no evidence of
neuropathology or abnormalities in the
development of the fetal nervous system
from the available toxicity studies
conducted with sedaxane.
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 sedaxane
is complete.
ii. The sedaxane toxicology database
did not demonstrate evidence of
neurotoxicity. Although sedaxane
caused changes in endpoints such as
decreased activity, decreased muscle
tone, decreased rearing and decreased
grip strength in the ACN study and
reduced locomotor activity in the SCN
study, EPA believes these effects do not
support a finding that sedaxane is a
neurotoxicant. The observed effects in
the ACN and SCN studies were likely
secondary to inhibition of
mitochondrial energy production,
which is the pesticidal mode of action
for sedaxane. Furthermore, there was no
corroborative neuro-histopathology
demonstrated in any study, even at the
highest doses tested (i.e., 2,000 mg/kg/
day). Therefore, based on its chemical
structure, its pesticidal mode of action,
and lack of evidence of neurohistopathology in any acute and
repeated-dose toxicity study, sedaxane
does not demonstrate potential for
neurotoxicity. Since sedaxane did not
demonstrate increased susceptibility to
the young or specific neurotoxicity, a
developmental neurotoxicity (DNT)
study is not required.
iii. There is no evidence that sedaxane
results in increased susceptibility in in
utero rats or rabbits in the prenatal
developmental studies or in young rats
in the 2-generation reproduction study.
iv. There are no residual uncertainties
identified in the exposure databases.
The dietary food exposure assessments
were performed based on 100 PCT and
tolerance-level residues. EPA made
conservative (protective) assumptions in
the ground and surface water modeling
used to assess exposure to sedaxane in
drinking water. These assessments will
not underestimate the exposure and
risks posed by sedaxane.
E:\FR\FM\05JNR1.SGM
05JNR1
Federal Register / Vol. 78, No. 108 / Wednesday, June 5, 2013 / Rules and Regulations
TKELLEY on DSK3SPTVN1PROD with RULES
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.
Sedaxane is a member of the pyrazole
carboxamide fungicides. Metabolic
processes involving cleavage of the
linkage between the pyrazole and
phenyl rings of these compounds have
the potential to produce common
pyrazole-metabolites. Indeed, confined
rotational crops studies for sedaxane
and isopyrazam demonstrate that low
levels of three common metabolites
form. However, due to the low levels of
these compounds in rotational crops
(<=0.01 ppm), and low concerns about
their potential toxicity relative to parent
molecules, any risks from aggregation of
exposures to common metabolites
across chemicals will be insignificant.
1. Acute risk. Using the exposure
assumptions discussed in this unit for
acute exposure, the acute dietary
exposure from food and water to
sedaxane will occupy <1% of the aPAD
for all populations.
2. Chronic risk. Using the exposure
assumptions described in this unit for
chronic exposure, EPA has concluded
that chronic exposure to sedaxane from
food and water will utilize <1% of the
cPAD for all populations. There are no
residential uses for sedaxane.
3. Short- and intermediate-term risk.
Short- and intermediate-term aggregate
exposure takes into account short- and
intermediate-term residential exposure
plus chronic exposure to food and water
(considered to be a background
exposure level). Short- and
intermediate-term adverse effects were
identified; however, sedaxane is not
registered for any use patterns that
would result in short- or intermediateterm residential exposures. Because
there is no short- or intermediate-term
residential exposure and chronic dietary
exposure has already been assessed
under the appropriately protective
cPAD (which is at least as protective as
the POD used to assess short-term risk),
no further assessment of short- or
intermediate-term risk is necessary, and
EPA relies on the chronic dietary risk
VerDate Mar<15>2010
16:07 Jun 04, 2013
Jkt 229001
33747
assessment for evaluating short- and
intermediate-term risk for sedaxane.
4. Aggregate cancer risk for U.S.
population. The Agency has classified
sedaxane as ‘‘Likely to be Carcinogenic
to Humans’’ based on significant tumor
increases in two adequate rodent
carcinogenicity studies. Accordingly, a
cancer dietary risk assessment was
conducted, indicating a risk estimate of
1 × 10¥6 for the U.S. population.
5. 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 sedaxane
residues.
FFDCA section 408(b)(4) requires that
EPA explain the reasons for departing
from the Codex level. The Codex has not
established MRLs for sedaxane.
IV. Other Considerations
V. Conclusion
Therefore, tolerances are established
for residues of sedaxane, including its
metabolites and degradates in or on
corn, field, forage; corn, field, grain;
corn, field, stover; corn, pop, grain;
corn, pop, stover; corn, sweet, forage;
corn, sweet, kernel plus cob with husks
removed; corn, sweet, stover; pea and
bean, dried shelled, except soybean,
subgroup 6C; rapeseed, subgroup 20A;
sorghum, grain, forage; sorghum, grain,
grain; sorghum, grain, stover; and
vegetable, foliage of legume, except
soybean, subgroup 7A, all at a tolerance
level of 0.01 ppm.
A. Analytical Enforcement Methodology
Adequate enforcement methodology
is available to enforce the tolerance
expression. A modification of the Quick,
Easy, Cheap, Effective, Rugged, and Safe
(QuEChERS) method was developed for
the determination of residues of
sedaxane (as its isomers SYN508210
and SYN508211) in/on various crops. A
successful independent laboratory
validation (ILV) study was also
conducted on the modified QuEChERS
method using samples of wheat green
forage and wheat straw fortified with
SYN508210 and SYN508211 at 0.005
and 0.05 ppm. The analytical standard
for sedaxane, with an expiration date of
June 30, 2014, is currently available in
the EPA National Pesticide Standards
Repository. 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,
PO 00000
Frm 00059
Fmt 4700
Sfmt 4700
C. Revisions to Petitioned-For
Tolerances
The Agency determined that the
application of sedaxane to sweet corn
(resulting in residues on corn, sweet,
kernel plus cob with husks removed)
would result in residues to the livestock
feedstuffs corn, sweet, forage and corn,
sweet, stover; therefore, EPA is
establishing tolerances of 0.01 ppm for
those commodities. EPA is also
correcting commodity definitions for the
tolerances.
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
E:\FR\FM\05JNR1.SGM
05JNR1
33748
Federal Register / Vol. 78, No. 108 / Wednesday, June 5, 2013 / Rules and Regulations
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).
TKELLEY on DSK3SPTVN1PROD with RULES
List of Subjects in 40 CFR Part 180
16:07 Jun 04, 2013
Jkt 229001
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 § 180.665, add alphabetically the
following commodities to the table in
paragraph (a) to read as follows:
■
§ 180.665 Sedaxane; tolerances for
residues.
(a) * * *
Parts per
million
Commodity
*
*
*
*
Corn, field, forage .....................
Corn, field, grain .......................
Corn, field, stover .....................
Corn, pop, grain ........................
Corn, pop, stover ......................
Corn, sweet, forage ..................
Corn, sweet, kernel plus cob
with husks removed ..............
Corn, sweet, stover ..................
*
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
*
*
*
*
Pea and bean, dried shelled,
except soybean, subgroup
6C ..........................................
Rapeseed, subgroup 20A .........
0.01
0.01
*
*
*
*
Sorghum, grain, forage .............
Sorghum, grain, grain ...............
Sorghum, grain, stover .............
*
0.01
0.01
0.01
*
*
*
*
Vegetable, foliage of legume,
except soybean, subgroup
7A ..........................................
*
*
*
*
*
*
*
*
*
0.01
*
*
*
[FR Doc. 2013–13267 Filed 6–4–13; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
Diisopropyl Adipate; Exemption From
the Requirement of a Tolerance
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
PO 00000
Frm 00060
Fmt 4700
SUMMARY: This regulation establishes an
exemption from the requirement of a
tolerance for residues of diisopropyl
adipate when used as an inert
ingredient (solvent) in pesticide
formulations applied to pre- and postharvest crops under EPA regulations at
no more than 40% in formulated
products intended for mosquito control.
Wellmark International submitted a
petition prepared by Technology
Sciences Group Inc. to EPA under the
Federal Food, Drug, and Cosmetic Act
(FFDCA), requesting establishment of an
exemption from the requirement of a
tolerance. This regulation eliminates the
need to establish a maximum
permissible level for residues of
diisopropyl adipate.
DATES: This regulation is effective June
5, 2013. Objections and requests for
hearings must be received on or before
August 5, 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–2012–0469, 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:
David Lieu, Registration Division
(7505P), Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave. NW., Washington,
DC 20460–0001; telephone number:
703–305–0079; email address:
Lieu.David@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
40 CFR Part 180
[EPA–HQ–OPP–2012–0469; FRL–9387–8]
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
VerDate Mar<15>2010
Dated: May 29, 2013.
Lois Rossi,
Director, Registration Division, Office of
Pesticide Programs.
Sfmt 4700
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
E:\FR\FM\05JNR1.SGM
05JNR1
Agencies
[Federal Register Volume 78, Number 108 (Wednesday, June 5, 2013)]
[Rules and Regulations]
[Pages 33744-33748]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-13267]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2012-0704; FRL-9386-9]
Sedaxane; Pesticide Tolerances
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes tolerances for residues of
sedaxane in or on multiple commodities which are identified and
discussed later in this document. Syngenta Crop Protection, LLC
requested these tolerances under the Federal Food, Drug, and Cosmetic
Act (FFDCA).
DATES: This regulation is effective June 5, 2013. Objections and
requests for hearings must be received on or before August 5, 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-2012-0704, 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: Heather Garvie, Registration Division
(7505P), Office of Pesticide Programs, Environmental Protection Agency,
1200 Pennsylvania Ave. NW., Washington, DC 20460-0001; telephone
number: (703) 308-0034; email address: garvie.heather@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://www.ecfr.gov/cgi-bin/text-idx?&c=ecfr&tpl=/ecfrbrowse/Title40/40tab_02.tpl.
C. How can I file an objection or hearing request?
Under FFDCA section 408(g), 21 U.S.C. 346a, any person may file an
objection to any aspect of this regulation and may also request a
hearing on those objections. You must file your objection or request a
hearing on this regulation in accordance with the instructions provided
in 40 CFR part 178. To ensure proper receipt by EPA, you must identify
docket ID number EPA-HQ-OPP-2012-0704 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
August 5, 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-2012-0704, by one of
the following methods:
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the online instructions for submitting comments. Do not submit
electronically any information you consider to be CBI or other
information whose disclosure is restricted by statute.
Mail: OPP Docket, Environmental Protection Agency Docket
Center (EPA/DC), (28221T), 1200 Pennsylvania Ave. NW., Washington, DC
20460-0001.
Hand Delivery: To make special arrangements for hand
delivery or delivery of boxed information, please follow the
instructions at https://www.epa.gov/dockets/contacts.htm. Additional
instructions on commenting or visiting the docket, along with more
information about dockets generally, is available at https://www.epa.gov/dockets.
II. Summary of Petitioned-For Tolerance
In the Federal Register of September 28, 2012 (77 FR 59578) (FRL-
9364-6), 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
2F8071) by Syngenta Crop Protection, Inc., Regulatory Affairs, P.O. Box
18300, Greensboro, NC 27419-8300. The petition requested that 40 CFR
180.665 be amended by establishing tolerances for residues of the
fungicide sedaxane, in or on corn (grain, forage, stover), popcorn
(grain, stover), and corn ears at 0.01 parts per million (ppm); sorghum
(grain, forage, stover) at 0.01 ppm; pea and bean, dried, shelled,
subgroup 6C (grain, forage, hay) at 0.01 ppm; and rapeseed, subgroup
20A (grain) at 0.01 ppm. That document referenced a
[[Page 33745]]
summary of the petition prepared by Syngenta Crop Protection, Inc., 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
corrected commodity definitions and recommended additional tolerances.
The reasons for these changes are explained in Unit IV.C.
III. Aggregate Risk Assessment and Determination of Safety
Section 408(b)(2)(A)(i) of FFDCA allows EPA to establish a
tolerance (the legal limit for a pesticide chemical residue in or on a
food) only if EPA determines that the tolerance is ``safe.'' Section
408(b)(2)(A)(ii) of FFDCA defines ``safe'' to mean that ``there is a
reasonable certainty that no harm will result from aggregate exposure
to the pesticide chemical residue, including all anticipated dietary
exposures and all other exposures for which there is reliable
information.'' This includes exposure through drinking water and in
residential settings, but does not include occupational exposure.
Section 408(b)(2)(C) of FFDCA requires EPA to give special
consideration to exposure of infants and children to the pesticide
chemical residue in establishing a tolerance and to ``ensure that there
is a reasonable certainty that no harm will result to infants and
children from aggregate exposure to the pesticide chemical residue. . .
.''
Consistent with FFDCA section 408(b)(2)(D), and the factors
specified in FFDCA section 408(b)(2)(D), EPA has reviewed the available
scientific data and other relevant information in support of this
action. EPA has sufficient data to assess the hazards of and to make a
determination on aggregate exposure for sedaxane including exposure
resulting from the tolerances established by this action. EPA's
assessment of exposures and risks associated with sedaxane follows.
A. Toxicological Profile
EPA has evaluated the available toxicity data and considered its
validity, completeness, and reliability as well as the relationship of
the results of the studies to human risk. EPA has also considered
available information concerning the variability of the sensitivities
of major identifiable subgroups of consumers, including infants and
children. The toxicological effects reported in the submitted animal
studies such as mitochondrial disintegration and glycogen depletion in
the liver are consistent with the pesticidal mode of action also being
the mode of toxic action in mammals. The rat is the most sensitive
species tested, and the main target tissue for sedaxane is the liver.
Sedaxane also caused thyroid hypertrophy/hyperplasia. In the acute
neurotoxicity (ACN) and sub-chronic neurotoxicity (SCN) studies,
sedaxane caused decreased activity, decreased muscle tone, decreased
rearing and decreased grip strength.
There are indications of reproductive toxicity in rats at the high
dose, but these effects did not result in reduced fertility. In the
rat, no adverse effects in fetuses were seen in developmental toxicity
studies at maternally toxic doses. However, in the rabbit, fetal
toxicity was observed at the same doses as the dams. Offspring effects
in the reproduction study occurred at the same doses causing parental
effects, thus there was no quantitative increase in sensitivity in rat
pups. Sedaxane is tumorigenic in the liver in the rat and mouse, and
led to tumors in the thyroid and uterus in the rat and was classified
as ``likely to be carcinogenic to humans.'' Sedaxane was negative in
the mutagenicity studies. The 28-day dermal study did not show systemic
toxicity at the limit dose of 1,000 milligrams/kilogram/day (mg/kg/
day). Sedaxane has low acute toxicity by the oral, dermal, and
inhalation routes. It is not a dermal sensitizer, causes no skin
irritation and only slight eye irritation.
Specific information on the studies received and the nature of the
adverse effects caused by sedaxane 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 final rule
published in the Federal Register of June 20, 2012 (77 FR 36919) (FRL-
9345-8).
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 sedaxane used for
human risk assessment is discussed in Unit III.B. of the final rule
published in the Federal Register of June 20, 2012.
C. Exposure Assessment
1. Dietary exposure from food and feed uses. In evaluating dietary
exposure to sedaxane, EPA considered exposure under the petitioned-for
tolerances as well as all existing sedaxane tolerances in 40 CFR
180.665. EPA assessed dietary exposures from sedaxane in food as
follows:
i. Acute exposure. Quantitative acute dietary exposure and risk
assessments are performed for a food-use pesticide, if a toxicological
study has indicated the possibility of an effect of concern occurring
as a result of a 1-day or single exposure. Such effects were identified
for sedaxane. In estimating acute dietary exposure, EPA used food
consumption information from the U.S. Department of Agriculture (USDA)
1994-1996 and 1998 Nationwide Continuing Surveys of Food Intake by
Individuals (CSFII). As to residue levels in food, EPA conducted a
highly conservative acute dietary risk assessment which used tolerance
level residues and assumed 100 percent crop treated (PCT) for all
commodities.
ii. Chronic exposure. In conducting the chronic dietary exposure
assessment, EPA used the food consumption data from the USDA 1994-1996
and 1998 CSFII. As to residue levels in food, EPA conducted a highly
conservative chronic dietary risk assessment which used tolerance level
residues and assumed 100 PCT for all commodities.
iii. Cancer. EPA determines whether quantitative cancer exposure
and risk assessments are appropriate for a food-use pesticide based on
the weight of the evidence from cancer studies and other relevant data.
If a quantitative cancer risk assessment is appropriate, cancer risk
may be quantified using a linear or nonlinear approach. If sufficient
[[Page 33746]]
information on the carcinogenic mode of action is available, a
threshold or nonlinear approach is used and a cancer RfD is calculated
based on an earlier non-cancer key event. If carcinogenic mode of
action data are not available, or if the mode of action data determines
a mutagenic mode of action, a default linear cancer slope factor
approach is utilized. Based on significant tumor increases in two
adequate rodent carcinogenicity studies and as noted in Unit III.A.,
EPA has concluded that sedaxane should be classified as ``Likely To Be
Carcinogenic to Humans.'' EPA used a linear approach to quantify cancer
risk because mode of action data are not available for sedaxane. EPA
assessed exposure for the purpose of estimating cancer risk assuming
tolerance-level residues and 100 PCT for all commodities and included
modeled drinking water estimates.
iv. Anticipated residue PCT information. EPA did not use
anticipated residue and/or PCT information in the dietary assessment
for sedaxane. One-hundred PCT was assumed for all food commodities.
2. Dietary exposure from drinking water. The Agency used screening
level water exposure models in the dietary exposure analysis and risk
assessment for sedaxane in drinking water. These simulation models take
into account data on the physical, chemical, and fate/transport
characteristics of sedaxane. 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 FQPA First Index Reservoir Screening Tool (FIRST) and
Tier II Pesticide Root Zone Model/Groundwater (PRZM-GW Version 1.0, 12/
11/2012), the estimated drinking water concentrations (EDWCs) of
sedaxane for acute exposures are estimated to be 4.1 parts per billion
(ppb) for surface water and 9.9 ppb for ground water. The water
exposures for the chronic dietary and cancer assessments are estimated
to be 1.2 ppb for surface water and 8.4 ppb for ground water.
Modeled estimates of drinking water concentrations were directly
entered into the dietary exposure model. For acute dietary risk
assessment, the water concentration value of 9.9 ppb was used to assess
the contribution to drinking water. For chronic and cancer dietary risk
assessment, the water concentration value of 8.4 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). Sedaxane is not
registered for any specific use patterns that would result in
residential exposure.
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 sedaxane
to share a common mechanism of toxicity with any other substances. For
the purposes of this tolerance action, therefore, EPA has assumed that
sedaxane does not have a common mechanism of toxicity with other
substances. For information regarding EPA's efforts to determine which
chemicals have a common mechanism of toxicity and to evaluate the
cumulative effects of such chemicals, see EPA's Web site at https://www.epa.gov/pesticides/cumulative.
D. Safety Factor for Infants and Children
1. In general. Section 408(b)(2)(C) of FFDCA provides that EPA
shall apply an additional tenfold (10X) margin of safety for infants
and children in the case of threshold effects to account for prenatal
and postnatal toxicity and the completeness of the database on toxicity
and exposure unless EPA determines based on reliable data that a
different margin of safety will be safe for infants and children. This
additional margin of safety is commonly referred to as the Food Quality
Protection Act (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 for
increased susceptibility following prenatal and/or postnatal exposures
to sedaxane based on effects seen in developmental toxicity studies in
rabbits or rats. There was no evidence of increased susceptibility in a
2-generation reproduction study in rats following prenatal or postnatal
exposure to sedaxane. Clear NOAELs/LOAELs were established for the
developmental effects seen in rats and rabbits as well as for the
offspring effects seen in the 2-generation reproduction study. The
dose-response relationship for the effects of concern is well
characterized. The NOAEL used for the acute dietary risk assessment (30
mg/kg/day), based on effects observed in the ACN study, is protective
of the developmental and offspring effects seen in rabbits and rats
(NOAELs of 100-200 mg/kg/day).
In addition, there is no evidence of neuropathology or
abnormalities in the development of the fetal nervous system from the
available toxicity studies conducted with sedaxane.
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 sedaxane is complete.
ii. The sedaxane toxicology database did not demonstrate evidence
of neurotoxicity. Although sedaxane caused changes in endpoints such as
decreased activity, decreased muscle tone, decreased rearing and
decreased grip strength in the ACN study and reduced locomotor activity
in the SCN study, EPA believes these effects do not support a finding
that sedaxane is a neurotoxicant. The observed effects in the ACN and
SCN studies were likely secondary to inhibition of mitochondrial energy
production, which is the pesticidal mode of action for sedaxane.
Furthermore, there was no corroborative neuro-histopathology
demonstrated in any study, even at the highest doses tested (i.e.,
2,000 mg/kg/day). Therefore, based on its chemical structure, its
pesticidal mode of action, and lack of evidence of neuro-histopathology
in any acute and repeated-dose toxicity study, sedaxane does not
demonstrate potential for neurotoxicity. Since sedaxane did not
demonstrate increased susceptibility to the young or specific
neurotoxicity, a developmental neurotoxicity (DNT) study is not
required.
iii. There is no evidence that sedaxane results in increased
susceptibility in in utero rats or rabbits in the prenatal
developmental studies or in young rats in the 2-generation reproduction
study.
iv. There are no residual uncertainties identified in the exposure
databases. The dietary food exposure assessments were performed based
on 100 PCT and tolerance-level residues. EPA made conservative
(protective) assumptions in the ground and surface water modeling used
to assess exposure to sedaxane in drinking water. These assessments
will not underestimate the exposure and risks posed by sedaxane.
[[Page 33747]]
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.
Sedaxane is a member of the pyrazole carboxamide fungicides.
Metabolic processes involving cleavage of the linkage between the
pyrazole and phenyl rings of these compounds have the potential to
produce common pyrazole-metabolites. Indeed, confined rotational crops
studies for sedaxane and isopyrazam demonstrate that low levels of
three common metabolites form. However, due to the low levels of these
compounds in rotational crops (<=0.01 ppm), and low concerns about
their potential toxicity relative to parent molecules, any risks from
aggregation of exposures to common metabolites across chemicals will be
insignificant.
1. Acute risk. Using the exposure assumptions discussed in this
unit for acute exposure, the acute dietary exposure from food and water
to sedaxane will occupy <1% of the aPAD for all populations.
2. Chronic risk. Using the exposure assumptions described in this
unit for chronic exposure, EPA has concluded that chronic exposure to
sedaxane from food and water will utilize <1% of the cPAD for all
populations. There are no residential uses for sedaxane.
3. Short- and intermediate-term risk. Short- and intermediate-term
aggregate exposure takes into account short- and intermediate-term
residential exposure plus chronic exposure to food and water
(considered to be a background exposure level). Short- and
intermediate-term adverse effects were identified; however, sedaxane is
not registered for any use patterns that would result in short- or
intermediate-term residential exposures. Because there is no short- or
intermediate-term residential exposure and chronic dietary exposure has
already been assessed under the appropriately protective cPAD (which is
at least as protective as the POD used to assess short-term risk), no
further assessment of short- or intermediate-term risk is necessary,
and EPA relies on the chronic dietary risk assessment for evaluating
short- and intermediate-term risk for sedaxane.
4. Aggregate cancer risk for U.S. population. The Agency has
classified sedaxane as ``Likely to be Carcinogenic to Humans'' based on
significant tumor increases in two adequate rodent carcinogenicity
studies. Accordingly, a cancer dietary risk assessment was conducted,
indicating a risk estimate of 1 x 10-6 for the U.S.
population.
5. 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 sedaxane residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodology is available to enforce the
tolerance expression. A modification of the Quick, Easy, Cheap,
Effective, Rugged, and Safe (QuEChERS) method was developed for the
determination of residues of sedaxane (as its isomers SYN508210 and
SYN508211) in/on various crops. A successful independent laboratory
validation (ILV) study was also conducted on the modified QuEChERS
method using samples of wheat green forage and wheat straw fortified
with SYN508210 and SYN508211 at 0.005 and 0.05 ppm. The analytical
standard for sedaxane, with an expiration date of June 30, 2014, is
currently available in the EPA National Pesticide Standards Repository.
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 MRLs for sedaxane.
C. Revisions to Petitioned-For Tolerances
The Agency determined that the application of sedaxane to sweet
corn (resulting in residues on corn, sweet, kernel plus cob with husks
removed) would result in residues to the livestock feedstuffs corn,
sweet, forage and corn, sweet, stover; therefore, EPA is establishing
tolerances of 0.01 ppm for those commodities. EPA is also correcting
commodity definitions for the tolerances.
V. Conclusion
Therefore, tolerances are established for residues of sedaxane,
including its metabolites and degradates in or on corn, field, forage;
corn, field, grain; corn, field, stover; corn, pop, grain; corn, pop,
stover; corn, sweet, forage; corn, sweet, kernel plus cob with husks
removed; corn, sweet, stover; pea and bean, dried shelled, except
soybean, subgroup 6C; rapeseed, subgroup 20A; sorghum, grain, forage;
sorghum, grain, grain; sorghum, grain, stover; and vegetable, foliage
of legume, except soybean, subgroup 7A, all at a tolerance level of
0.01 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
[[Page 33748]]
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: May 29, 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. 180.665, add alphabetically the following commodities to
the table in paragraph (a) to read as follows:
Sec. 180.665 Sedaxane; tolerances for residues.
(a) * * *
------------------------------------------------------------------------
Parts per
Commodity million
------------------------------------------------------------------------
* * * * *
Corn, field, forage........................................ 0.01
Corn, field, grain......................................... 0.01
Corn, field, stover........................................ 0.01
Corn, pop, grain........................................... 0.01
Corn, pop, stover.......................................... 0.01
Corn, sweet, forage........................................ 0.01
Corn, sweet, kernel plus cob with husks removed............ 0.01
Corn, sweet, stover........................................ 0.01
* * * * *
Pea and bean, dried shelled, except soybean, subgroup 6C... 0.01
Rapeseed, subgroup 20A..................................... 0.01
* * * * *
Sorghum, grain, forage..................................... 0.01
Sorghum, grain, grain...................................... 0.01
Sorghum, grain, stover..................................... 0.01
* * * * *
Vegetable, foliage of legume, except soybean, subgroup 7A.. 0.01
* * * * *
------------------------------------------------------------------------
* * * * *
[FR Doc. 2013-13267 Filed 6-4-13; 8:45 am]
BILLING CODE 6560-50-P