Fomesafen; Pesticide Tolerances, 12877-12882 [2011-5070]
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Federal Register / Vol. 76, No. 46 / Wednesday, March 9, 2011 / Rules and Regulations
§ 180.910 Inert ingredients used preharvest and post-harvest; exemptions from
the requirement of a tolerance.
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Inert ingredients
Limits
Uses
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Potassium benzoate (as
No. 582–25–2).
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none ....
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preservative
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3. In § 180.930, the table is amended
by adding alphabetically the following
inert ingredients to read as follows:
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§ 180.930 Inert ingredients applied to
animals; exemptions from the requirement
of a tolerance.
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Inert ingredients
Limits
Uses
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Potassium benzoate (as
No. 582–25–2).
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none ....
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preservative
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I. General Information
[FR Doc. 2011–5051 Filed 3–8–11; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2010–0122; FRL–8858–5]
Fomesafen; Pesticide Tolerances
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
This regulation establishes
tolerances for residues of fomesafen in
or on pepper (bell and non-bell), potato,
and tomato. Syngenta Crop Protection,
Inc. requested these tolerances under
the Federal Food, Drug, and Cosmetic
Act (FFDCA).
DATES: This regulation is effective
March 9, 2011. Objections and requests
for hearings must be received on or
before May 9, 2011, and must be filed
in accordance with the instructions
provided in 40 CFR part 178 (see also
Unit I.C. of the SUPPLEMENTARY
INFORMATION).
ADDRESSES: EPA has established a
docket for this action under docket
identification (ID) number EPA–HQ–
OPP–2010–0122. All documents in the
docket are listed in the docket index
available at https://www.regulations.gov.
Although listed in the index, some
information is not publicly available,
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SUMMARY:
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e.g., Confidential Business Information
(CBI) or other information whose
disclosure is restricted by statute.
Certain other material, such as
copyrighted material, is not placed on
the Internet and will be publicly
available only in hard copy form.
Publicly available docket materials are
available in the electronic docket at
https://www.regulations.gov, or, if only
available in hard copy, at the OPP
Regulatory Public Docket in Rm. S–
4400, One Potomac Yard (South Bldg.),
2777 S. Crystal Dr., Arlington, VA. The
Docket Facility is open from 8:30 a.m.
to 4 p.m., Monday through Friday,
excluding legal holidays. The Docket
Facility telephone number is (703) 305–
5805.
FOR FURTHER INFORMATION CONTACT:
Susan Stanton, Registration Division
(7505P), Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington,
DC 20460–0001; telephone number:
(703) 305–5218; e-mail address:
stanton.susan@epa.gov.
SUPPLEMENTARY INFORMATION:
A. Does this action apply to me?
You may be potentially affected by
this action if you are an agricultural
producer, food manufacturer, or
pesticide manufacturer. Potentially
affected entities may include, but are
not limited to those engaged in the
following activities:
• Crop production (NAICS code 111).
• Animal production (NAICS code
112).
• Food manufacturing (NAICS code
311).
• Pesticide manufacturing (NAICS
code 32532).
This listing is not intended to be
exhaustive, but rather to provide a guide
for readers regarding entities likely to be
affected by this action. Other types of
entities not listed in this unit could also
be affected. The North American
Industrial Classification System
(NAICS) codes have been provided to
assist you and others in determining
whether this action might apply to
certain entities. If you have any
questions regarding the applicability of
this action to a particular entity, consult
the person listed under FOR FURTHER
INFORMATION CONTACT.
B. How can I 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.gpoaccess.gov/ecfr.
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C. How can I file an objection or hearing
request?
Under FFDCA section 408(g), 21
U.S.C. 346a, any person may file an
objection to any aspect of this regulation
and may also request a hearing on those
objections. You must file your objection
or request a hearing on this regulation
in accordance with the instructions
provided in 40 CFR part 178. To ensure
proper receipt by EPA, you must
identify docket ID number EPA–HQ–
OPP–2010–0122 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 May 9, 2011. 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 that does not
contain any 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 a copy of
your non-CBI objection or hearing
request, identified by docket ID number
EPA–HQ–OPP–2010–0122, by one of
the following methods:
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the on-line
instructions for submitting comments.
• Mail: Office of Pesticide Programs
(OPP) Regulatory Public Docket (7502P),
Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington,
DC 20460–0001.
• Delivery: OPP Regulatory Public
Docket (7502P), Environmental
Protection Agency, Rm. S–4400, One
Potomac Yard (South Bldg.), 2777 S.
Crystal Dr., Arlington, VA. Deliveries
are only accepted during the Docket
Facility’s normal hours of operation
(8:30 a.m. to 4 p.m., Monday through
Friday, excluding legal holidays).
Special arrangements should be made
for deliveries of boxed information. The
Docket Facility telephone number is
(703) 305–5805.
II. Summary of Petitioned-for Tolerance
In the Federal Registers of September
4, 2009 (74 FR 45848) (FRL–8434–4)
and March 19, 2010 (75 FR 13277)
(FRL–8813–2), EPA issued notices
pursuant to section 408(d)(3) of FFDCA,
21 U.S.C. 346a(d)(3), announcing the
filing of pesticide petitions (PP 9F7563
and PP 9F7667) by Syngenta Crop
Protection, Inc., PO Box 18300,
Greensboro, NC 27419–8300. The
petitions requested that 40 CFR 180.433
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be amended by establishing tolerances
for residues of the herbicide fomesafen,
5-[2-cloro-4-(trifluoromethyl)phenoxy]N-(methylsulfonyl)-2-nitrobenzamide,
in or on potato and tomato (PP 9F7563);
and pepper (PP 9F7667) at 0.025 parts
per million (ppm). Those notices
referenced summaries of the petitions
prepared by Syngenta Crop Protection,
Inc., the registrant, which are available
in the dockets, https://
www.regulations.gov. There were no
comments received in response to the
notice of filing of PP 9F7563. Comments
were received on the notice of filing of
PP 9F7667. EPA’s response to these
comments is discussed in Unit IV.C.
EPA has revised the proposed
tolerance expression and the commodity
terms for peppers in accordance with
current Agency policy. These revisions
are discussed in Unit IV.D.
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III. Aggregate Risk Assessment and
Determination of Safety
Section 408(b)(2)(A)(i) of FFDCA
allows EPA to establish a tolerance (the
legal limit for a pesticide chemical
residue in or on a food) only if EPA
determines that the tolerance is ‘‘safe.’’
Section 408(b)(2)(A)(ii) of FFDCA
defines ‘‘safe’’ to mean that ‘‘there is a
reasonable certainty that no harm will
result from aggregate exposure to the
pesticide chemical residue, including
all anticipated dietary exposures and all
other exposures for which there is
reliable information.’’ This includes
exposure through drinking water and in
residential settings, but does not include
occupational exposure. Section
408(b)(2)(C) of FFDCA requires EPA to
give special consideration to exposure
of infants and children to the pesticide
chemical residue in establishing a
tolerance and to ‘‘ensure that there is a
reasonable certainty that no harm will
result to infants and children from
aggregate exposure to the pesticide
chemical residue. * * *’’
Consistent with section 408(b)(2)(D)
of FFDCA, and the factors specified in
section 408(b)(2)(D) of FFDCA, EPA has
reviewed the available scientific data
and other relevant information in
support of this action. EPA has
sufficient data to assess the hazards of
and to make a determination on
aggregate exposure for fomesafen
including exposure resulting from the
tolerances established by this action.
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EPA’s assessment of exposures and risks
associated with fomesafen 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.
Fomesafen has a low order of acute
toxicity by the oral route of exposure, is
severely irritating to the eye, and is
moderately irritating to the skin. In the
subchronic and chronic toxicity studies
in rats and mice, food consumption or
food efficiency, body weight/body
weight gain, and histopathological
changes in the liver were the parameters
that were most often affected. Dogs and
mice also showed hematological
changes (e.g., decreased erythrocyte
count, hemoglobin, or hematocrit).
There was no evidence of neurotoxicity
or immunotoxicity in the toxicological
studies with fomesafen. There was no
evidence that fomesafen results in
increased susceptibility of rat or rabbit
fetuses in the prenatal developmental
studies or in young rats in the 2generation reproduction study.
There was no evidence of
carcinogenicity in the rat chronic
toxicity/carcinogenicity study. Liver
tumors were produced in the mouse
carcinogenicity study; however, EPA
classified fomesafen as ‘‘Not Likely to be
Carcinogenic to Humans,’’ based on the
weight-of-evidence supporting
activation of peroxisome proliferatoractivated receptor alpha (PPARa) as the
mode of action for fomesafen-induced
hepatocarcinogenesis in mice. The data
did not support either mutagenesis or
cytotoxicity followed by regenerative
proliferation as alternative modes of
action. While the proposed mode of
action for liver tumors in mice is
theoretically plausible in humans, it is
unlikely to take place in humans based
on quantitative species differences in
PPARa activation and toxicokinetics.
Detailed information on the factors EPA
considered in making this
determination can be found at https://
www.regulations.gov in the document
‘‘FOMESAFEN: Second Report of the
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Cancer Assessment Review Committee’’
in docket ID number EPA–HQ–OPP–
2010–0122.
Specific information on the studies
received and the nature of the adverse
effects caused by fomesafen 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 the document
‘‘Fomesafen Sodium: Human Health
Risk Assessment for the Establishment
of Tolerances and Registration of New
Uses of Fomesafen Sodium on Potatoes
and Peppers,’’ p. 30 in docket ID number
EPA–HQ–OPP–2010–0122.
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 fomesafen used for human
risk assessment is shown the Table of
this unit.
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TABLE—SUMMARY OF TOXICOLOGICAL DOSES AND ENDPOINTS FOR FOMESAFEN FOR USE IN HUMAN HEALTH RISK
ASSESSMENT
Point of departure and
uncertainty/safety factors
Exposure/scenario
Acute dietary (All population subgroups, including Females 13–
49 years of age, infants and children).
Chronic dietary (All populations) ....
RfD, PAD, LOC for risk
assessment
Study and toxicological effects
No toxic effects attributable to a single dose of fomesafen were found in the database.
NOAEL= 0.25 mg/kg/day UFA =
10x.
UFH = 10x FQPA SF = 1x
Chronic RfD = 0.0025 mg/kg/day
Chronic toxicity—rat LOAEL = 5
mg/kg/day based on hyalinization of the liver in males.
cPAD = 0.0025 mg/kg/day.
Fomesafen is classified as ‘‘Not Likely to be Carcinogenic to Humans.’’
Cancer (Oral, dermal, inhalation) ..
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UFA = extrapolation from animal to human (interspecies). UFH = potential variation in sensitivity among members of the human population
(intraspecies). UFL = use of a LOAEL to extrapolate a NOAEL. UFS = use of a short-term study for long-term risk assessment. UFDB = to account for the absence of data or other data deficiency. FQPA SF = Food Quality Protection Act Safety Factor. PAD = population adjusted dose
(a = acute, c = chronic). RfD = reference dose. MOE = margin of exposure. LOC = level of concern.
C. Exposure Assessment
1. Dietary exposure from food and
feed uses. In evaluating dietary
exposure to fomesafen, EPA considered
exposure under the petitioned-for
tolerances as well as all existing
fomesafen tolerances in 40 CFR 180.433.
EPA assessed dietary exposures from
fomesafen 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 fomesafen; therefore, a quantitative
acute dietary exposure assessment is
unnecessary.
ii. Chronic exposure. In conducting
the chronic dietary exposure assessment
EPA used the food consumption data
from the United States Department of
Agriculture (USDA) 1994–1996 and
1998 Nationwide Continuing Surveys of
Food Intakes by Individuals (CSFII). As
to residue levels in food, EPA assumed
that residues would be present in all
commodities at the tolerance level and
that 100% of all crops are treated with
fomesafen. Dietary Exposure Evaluation
Model/Food Commodity Intake
Database (DEEM–FCIDTM), Version 2.03,
default processing factors were used to
determine residues in processed
commodities.
iii. Cancer. Based on the data
summarized in Unit III.A., EPA has
concluded that fomesafen 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 or PCT
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information in the dietary assessment
for fomesafen. Tolerance level residues
and 100 PCT were assumed for all food
commodities.
2. Dietary exposure from drinking
water. The Agency used a screeninglevel water exposure model to estimate
residues of fomesafen in surface water.
This simulation model, the Pesticide
Root Zone Model/Exposure Analysis
Modeling System (PRZM/EXAMS),
takes into account data on the physical,
chemical, and fate/transport
characteristics of fomesafen. 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 model results, the
estimated drinking water concentration
(EDWC) of fomesafen for chronic
exposures for non-cancer assessments is
estimated to be 10.535 parts per billion
(ppb) for surface water.
The Agency estimated residues of
fomesafen in ground water based on the
results of a prospective ground water
monitoring study, submitted by the
registrant, Syngenta Crop Protection,
Inc. The maximum residue found in the
study, which was conducted on a
vulnerable North Carolina soil using a
soybean cropping system, was 1 ppb, an
order of magnitude lower than the
modeled estimate for surface water.
The modeled estimate of fomesafen in
surface water was used in the dietary
exposure analysis and risk assessment
for fomesafen in drinking water. For
chronic dietary risk assessment, the
water concentration of value 10.535 ppb
was directly entered into the dietary
exposure model to assess the
contribution to drinking water.
3. From non-dietary exposure. The
term ‘‘residential exposure’’ is used in
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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). Fomesafen
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.’’
Fomesafen is a member of the
diphenyl ether chemical family. The
common toxicity that these compounds
share is induction of liver effects (liver
hypertrophy, increase in liver weight,
tumors). Members of this class have
been shown to induce rodent liver
effects/tumors through the activation of
the peroxisome proliferator-activated
receptor (PPARa). It should be noted
that liver hypertrophy and increases in
liver weight are part of the range of
morphological changes that result from
chemically-mediated effects on the
PPARa receptor and
hepatocarcinogenesis. Although PPARa
agonists can induce liver rodent tumors,
the potential for PPARa agonists to
induce liver tumors in other species,
including humans, appears to be
unlikely. This is because evidence
shows that these other species are
quantitatively less sensitive to the
effects of PPARa agonism due to
toxicodynamic differences between the
human and rodent nuclear PPARa
receptor. Thus, while this mode of
action for liver tumors in rodent is
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qualitatively possible in humans, it is
unlikely to take place in humans based
on quantitative species differences in
PPARa activation and toxicokinetics.
Accordingly, although members of the
diphenyl ether family, as well as other
classes of compounds, may share a
common hepatocarcinogenic mode of
action, cumulative exposure to PPARa
agonists is unlikely to induce liver
carcinogenesis in humans.
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.
The pre- and postnatal database for
fomesafen includes a prenatal
developmental toxicity study in rabbits,
two prenatal developmental toxicity
studies in rats, and a 2-generation
reproduction toxicity study in rats. The
rabbit developmental study was
classified as unacceptable because of
bacterial infection in the colony;
however, the study provided
information to assess potential
developmental toxicity in rabbits. There
was no significant difference between
the treated and control animals for
developmental abnormalities in the
rabbit study. In the two rat
developmental studies (considered
together), developmental effects
(postimplantation loss) occurred at the
same dose causing maternal toxicity
(staining of the ventral fur and
significantly decreased body weight
gain (>10%)). In the rat reproduction
study, offspring effects (increased
incidence of liver hyalinization in
males) occurred at the same dose
causing parental effects (liver
histopathology in males and females of
both generations).
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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 fomesafen
is largely complete, lacking only
immunotoxicity and acute and
subchronic neurotoxicity studies. EPA
has evaluated the available toxicity data
for fomesafen and determined that an
additional database uncertainty factor is
not needed to account for the lack of
these studies. As stated in Unit III.A,
fomesafen primarily impacts the
parameters of food consumption or food
efficiency, body weight/body weight
gain, and histopathological changes in
the liver. There is no evidence that
fomesafen causes immunotoxic or
neurotoxic effects in any of the available
toxicity studies, and EPA does not
believe that conducting immunotoxicity
and acute/subchronic neurotoxicity
testing will result in a NOAEL less than
0.25 mg/kg/day, which is presently used
as the point of departure for chronic risk
assessment.
ii. There is no indication that
fomesafen 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
fomesafen 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 surface water modeling used to
assess exposure to fomesafen in
drinking water. These assessments will
not underestimate the exposure and
risks posed by fomesafen.
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.
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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, fomesafen 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 fomesafen from
food and water will utilize 32% of the
cPAD for infants, less than 1 year old,
the population group receiving the
greatest exposure. There are no
residential uses for fomesafen.
3. Short- and intermediate-term risk.
Short- and intermediate-term aggregate
exposure takes into account short- or
intermediate-term residential exposure
plus chronic exposure from food and
water (considered to be a background
exposure level). Short-/intermediateterm adverse effects (hyalinization of
hepatocytes, increased eosinophilia,
reduced granulation, increased liver
weights in males and females, and
increases in plasma alkaline
phosphatase, alanine transminase and
aspartate transaminase in males in the
90-day rat feeding study) were
identified; however, fomesafen is not
registered for any use patterns that
would result in short- or intermediateterm residential exposure. Short- and
intermediate-term risks are assessed
based on short- or intermediate-term
residential exposure plus chronic
dietary exposure. 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 intermediateterm risk is necessary, and EPA relies on
the chronic dietary risk assessment for
evaluating short- and intermediate-term
risk for fomesafen.
4. Aggregate cancer risk for U.S.
population. As explained in Unit III.A,
EPA has concluded that the mode of
action for fomesafen-induced
hepatocarcinogenesis in mice is
unlikely to take place in humans;
therefore, fomesafen is not expected to
pose a cancer risk to humans.
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 fomesafen
residues.
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IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodology
(high performance liquid
chromatography with tandem mass
spectrometry detection (HPLC/MS/MS))
is available to enforce the tolerance
expression. The method may be
requested from: Chief, Analytical
Chemistry Branch, Environmental
Science Center, 701 Mapes Rd., Ft.
Meade, MD 20755–5350; telephone
number: (410) 305–2905; e-mail address:
residuemethods@epa.gov.
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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 U.N.
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
fomesafen on pepper, potato, or tomato.
C. Response to Comments
An anonymous citizen objected to the
presence of any pesticide residues on
food. The Agency understands the
commenter’s concerns and recognizes
that some individuals believe that
pesticides should be banned
completely. However, the existing legal
framework provided by section 408 of
the Federal Food, Drug and Cosmetic
Act (FFDCA) contemplates that
tolerances greater than zero may be set
when persons seeking such tolerances
or exemptions have demonstrated that
the pesticide meets the safety standard
imposed by that statute. This citizen’s
comment appears to be directed at the
underlying statute and not EPA’s
implementation of it; the citizen has
made no contention that EPA has acted
in violation of the statutory framework.
D. Revisions to Petitioned-for
Tolerances
In its petition PP 9F7667, the
registrant proposed a tolerance of 0.025
ppm for residues of fomesafen in or on
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15:00 Mar 08, 2011
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the commodity ‘‘pepper.’’ Consistent
with recommendations in the Agency’s
Food and Feed Commodity Vocabulary,
EPA is establishing separate tolerances
for ‘‘pepper, bell’’ and ‘‘pepper, non-bell’’
at 0.025 ppm each.
EPA is also revising the requested
tolerance expression to clarify the
chemical moieties that are covered by
the tolerances and specify how
compliance with the tolerances is to be
measured. The revised tolerance
expression makes clear that the
tolerances cover residues of the
herbicide fomesafen, including its
metabolites and degradates, but that
compliance with the tolerance levels is
to be determined by measuring only
fomesafen, 5-[2-chloro-4(trifluoromethyl)phenoxy]-N(methylsulfonyl)-2-nitrobenzamide.
V. Conclusion
Therefore, tolerances are established
for residues of fomesafen, including its
metabolites and degradates, in or on
pepper, bell; pepper, non-bell; potato;
and tomato at 0.025 ppm. Compliance
with the tolerance levels is to be
determined by measuring only
fomesafen, 5-[2-chloro-4(trifluoromethyl)phenoxy]-N(methylsulfonyl)-2-nitrobenzamide.
VI. Statutory and Executive Order
Reviews
This final rule establishes tolerances
under section 408(d) of FFDCA in
response to a petition submitted to the
Agency. The Office of Management and
Budget (OMB) has exempted these types
of actions from review under Executive
Order 12866, entitled Regulatory
Planning and Review (58 FR 51735,
October 4, 1993). Because this final rule
has been exempted from review under
Executive Order 12866, this final rule is
not subject to Executive Order 13211,
entitled Actions Concerning Regulations
That Significantly Affect Energy Supply,
Distribution, or Use (66 FR 28355, May
22, 2001) or Executive Order 13045,
entitled Protection of Children from
Environmental Health Risks and Safety
Risks (62 FR 19885, April 23, 1997).
This final rule does not contain any
information collections subject to OMB
approval under the Paperwork
Reduction Act (PRA), 44 U.S.C. 3501 et
seq., nor does it require any special
considerations under Executive Order
12898, entitled Federal Actions to
Address Environmental Justice in
Minority Populations and Low-Income
Populations (59 FR 7629, February 16,
1994).
Since tolerances and exemptions that
are established on the basis of a petition
under section 408(d) of FFDCA, such as
PO 00000
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Fmt 4700
Sfmt 4700
12881
the tolerance in this final rule, do not
require the issuance of a proposed rule,
the requirements of the Regulatory
Flexibility Act (RFA) (5 U.S.C. 601 et
seq.) do not apply.
This final rule directly regulates
growers, food processors, food handlers,
and food retailers, not States or Tribes,
nor does this action alter the
relationships or distribution of power
and responsibilities established by
Congress in the preemption provisions
of section 408(n)(4) of FFDCA. As such,
the Agency has determined that this
action will not have a substantial direct
effect on States or Tribal governments,
on the relationship between the national
government and the States or Tribal
governments, or on the distribution of
power and responsibilities among the
various levels of government or between
the Federal Government and Indian
Tribes. Thus, the Agency has
determined that Executive Order 13132,
entitled Federalism (64 FR 43255,
August 10, 1999) and Executive Order
13175, entitled Consultation and
Coordination with Indian Tribal
Governments (65 FR 67249, November
9, 2000) do not apply to this final rule.
In addition, this final rule does not
impose any enforceable duty or contain
any unfunded mandate as described
under Title II of the Unfunded Mandates
Reform Act of 1995 (UMRA) (Pub. L.
104–4).
This action does not involve any
technical standards that would require
Agency consideration of voluntary
consensus standards pursuant to section
12(d) of the National Technology
Transfer and Advancement Act of 1995
(NTTAA), Public Law 104–113, section
12(d) (15 U.S.C. 272 note).
VII. Congressional Review Act
The Congressional Review Act, 5
U.S.C. 801 et seq., generally provides
that before a rule may take effect, the
agency promulgating the rule must
submit a rule report to each House of
the Congress and to the Comptroller
General of the United States. EPA will
submit a report containing this rule and
other required information to the U.S.
Senate, the U.S. House of
Representatives, and the Comptroller
General of the United States prior to
publication of this final rule in the
Federal Register. This final rule is not
a ‘‘major rule’’ as defined by 5 U.S.C.
804(2).
List of Subjects in 40 CFR Part 180
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
E:\FR\FM\09MRR1.SGM
09MRR1
12882
Federal Register / Vol. 76, No. 46 / Wednesday, March 9, 2011 / Rules and Regulations
mstockstill on DSKH9S0YB1PROD with RULES
Dated: February 28, 2011.
Lois Rossi,
Director, Registration Division, Office of
Pesticide Programs.
NMFS closes the commercial
sector for golden tilefish in the
exclusive economic zone (EEZ) of the
South Atlantic. This closure is
necessary to protect the golden tilefish
Therefore, 40 CFR chapter I is
resource.
amended as follows:
DATES: This rule is effective 12:01 a.m.,
PART 180—[AMENDED]
local time, March 9, 2011, until 12:01
a.m., local time, January 1, 2012.
■ 1. The authority citation for part 180
FOR FURTHER INFORMATION CONTACT:
continues to read as follows:
Catherine Bruger, telephone: 727–824–
Authority: 21 U.S.C. 321(q), 346a and 371.
5305, fax: 727–824–5308, e-mail:
Catherine.Bruger@noaa.gov.
■ 2. Section 180.433 is amended by
revising the introductory text in
SUPPLEMENTARY INFORMATION: The
paragraph (a) and alphabetically adding snapper-grouper fishery of the South
the following commodities to the table
Atlantic is managed under the Fishery
in paragraph (a) to read as follows:
Management Plan for the SnapperGrouper Fishery of the South Atlantic
§ 180.433 Fomesafen; tolerances for
Region (FMP). The FMP was prepared
residues.
by the South Atlantic Fishery
(a) General. Tolerances are
Management Council and is
established for residues of the herbicide
implemented under the authority of the
fomesafen, including its metabolites and
Magnuson-Stevens Fishery
degradates, in or on the following
Conservation and Management Act by
commodities. Compliance with the
regulations at 50 CFR part 622.
tolerance levels specified in the
The commercial quota for golden
following table below is to be
tilefish in the South Atlantic is 282,819
determined by measuring only
lb (128,284 kg) for the current fishing
fomesafen, 5-[2-chloro-4year, January 1 through December 31,
(trifluoromethyl)phenoxy]-N2011, as specified in 50 CFR
(methylsulfonyl)-2-nitrobenzamide, in
622.42(e)(2).
or on the commodity.
Under 50 CFR 622.43(a), NMFS is
required to close the commercial sector
Parts per
Commodity
for golden tilefish when its quota has
million
been reached, or is projected to be
reached, by filing a notification to that
*
*
*
*
effect with the Office of the Federal
Pepper, bell ................................
0.025 Register. NMFS has determined that the
Pepper, non-bell .........................
0.025 commercial quota for South Atlantic
Potato .........................................
0.025
golden tilefish will have been reached
by March 9, 2011. Accordingly, the
*
*
*
*
Tomato ........................................
0.025 commercial sector for South Atlantic
golden tilefish is closed effective 12:01
a.m., local time, March 9, 2011, until
*
*
*
*
*
12:01 a.m., local time, January 1, 2012.
[FR Doc. 2011–5070 Filed 3–8–11; 8:45 am]
The operator of a vessel with a valid
BILLING CODE 6560–50–P
commercial vessel permit for South
Atlantic snapper-grouper having golden
tilefish onboard must have landed and
DEPARTMENT OF COMMERCE
bartered, traded, or sold such golden
tilefish prior to 12:01 a.m., local time,
National Oceanic and Atmospheric
March 9, 2011. During the closure, the
Administration
bag limit and possession limits specified
in 50 CFR 622.39(d)(1)(ii) and (d)(2),
50 CFR Part 622
respectively, apply to all harvest or
[Docket No. 040205043–4043–01]
possession of golden tilefish in or from
the South Atlantic EEZ, and the sale or
RIN 0648–XA229
purchase of golden tilefish taken from
Fisheries of the Caribbean, Gulf of
the EEZ is prohibited. The prohibition
Mexico, and South Atlantic; Snapperon sale or purchase does not apply to
Grouper Fishery of the South Atlantic;
the sale or purchase of golden tilefish
Closure
that were harvested, landed ashore, and
sold prior to 12:01 a.m., local time,
AGENCY: National Marine Fisheries
March 9, 2011, and were held in cold
Service (NMFS), National Oceanic and
storage by a dealer or processor. For a
Atmospheric Administration (NOAA),
person on board a vessel for which a
Commerce.
Federal commercial or charter vessel/
ACTION: Temporary rule; closure.
headboat permit for the South Atlantic
VerDate Mar<15>2010
15:00 Mar 08, 2011
Jkt 223001
SUMMARY:
PO 00000
Frm 00058
Fmt 4700
Sfmt 9990
snapper-grouper fishery has been
issued, the sale and purchase provisions
of the commercial closure for golden
tilefish would apply regardless of
whether the fish are harvested in State
or Federal waters, as specified in 50
CFR 622.43(a)(5)(ii).
Classification
This action responds to the best
available information recently obtained
from the fishery. The Assistant
Administrator for Fisheries, NOAA,
(AA), finds that the need to immediately
implement this action to close the
commercial sector for golden tilefish
constitutes good cause to waive the
requirements to provide prior notice
and opportunity for public comment
pursuant to the authority set forth in 5
U.S.C. 553(b)(B), as such procedures
would be unnecessary and contrary to
the public interest. Such procedures
would be unnecessary because the rule
itself has been subject to notice and
comment, and all that remains is to
notify the public of the closure.
Allowing prior notice and
opportunity for public comment is
contrary to the public interest because
of the need to immediately implement
this action to protect the fishery since
the capacity of the fishing fleet allows
for rapid harvest of the quota. Prior
notice and opportunity for public
comment would require time and would
potentially result in a harvest well in
excess of the established quota.
For the aforementioned reasons, the
AA also finds good cause to waive the
30-day delay in the effectiveness of this
action under 5 U.S.C. 553(d)(3).
This action is taken under 50 CFR
622.43(a) and is exempt from review
under Executive Order 12866.
Authority: 16 U.S.C. 1801 et seq.
Dated: March 4, 2011.
Margo Schulze-Haugen,
Acting Director, Office of Sustainable
Fisheries, National Marine Fisheries Service.
[FR Doc. 2011–5360 Filed 3–4–11; 4:15 pm]
BILLING CODE 3510–22–P
E:\FR\FM\09MRR1.SGM
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Agencies
[Federal Register Volume 76, Number 46 (Wednesday, March 9, 2011)]
[Rules and Regulations]
[Pages 12877-12882]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-5070]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2010-0122; FRL-8858-5]
Fomesafen; Pesticide Tolerances
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes tolerances for residues of
fomesafen in or on pepper (bell and non-bell), potato, and tomato.
Syngenta Crop Protection, Inc. requested these tolerances under the
Federal Food, Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective March 9, 2011. Objections and
requests for hearings must be received on or before May 9, 2011, and
must be filed in accordance with the instructions provided in 40 CFR
part 178 (see also Unit I.C. of the SUPPLEMENTARY INFORMATION).
ADDRESSES: EPA has established a docket for this action under docket
identification (ID) number EPA-HQ-OPP-2010-0122. All documents in the
docket are listed in the docket index available at https://www.regulations.gov. Although listed in the index, some information is
not publicly available, e.g., Confidential Business Information (CBI)
or other information whose disclosure is restricted by statute. Certain
other material, such as copyrighted material, is not placed on the
Internet and will be publicly available only in hard copy form.
Publicly available docket materials are available in the electronic
docket at https://www.regulations.gov, or, if only available in hard
copy, at the OPP Regulatory Public Docket in Rm. S-4400, One Potomac
Yard (South Bldg.), 2777 S. Crystal Dr., Arlington, VA. The Docket
Facility is open from 8:30 a.m. to 4 p.m., Monday through Friday,
excluding legal holidays. The Docket Facility telephone number is (703)
305-5805.
FOR FURTHER INFORMATION CONTACT: Susan Stanton, Registration Division
(7505P), Office of Pesticide Programs, Environmental Protection Agency,
1200 Pennsylvania Ave., NW., Washington, DC 20460-0001; telephone
number: (703) 305-5218; e-mail address: stanton.susan@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
A. Does this action apply to me?
You may be potentially affected by this action if you are an
agricultural producer, food manufacturer, or pesticide manufacturer.
Potentially affected entities may include, but are not limited to those
engaged in the following activities:
Crop production (NAICS code 111).
Animal production (NAICS code 112).
Food manufacturing (NAICS code 311).
Pesticide manufacturing (NAICS code 32532).
This listing is not intended to be exhaustive, but rather to
provide a guide for readers regarding entities likely to be affected by
this action. Other types of entities not listed in this unit could also
be affected. The North American Industrial Classification System
(NAICS) codes have been provided to assist you and others in
determining whether this action might apply to certain entities. If you
have any questions regarding the applicability of this action to a
particular entity, consult the person listed under FOR FURTHER
INFORMATION CONTACT.
B. How can I 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.gpoaccess.gov/ecfr.
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-2010-0122 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
May 9, 2011. 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 that does not contain any 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 a copy of
your non-CBI objection or hearing request, identified by docket ID
number EPA-HQ-OPP-2010-0122, by one of the following methods:
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the on-line instructions for submitting comments.
Mail: Office of Pesticide Programs (OPP) Regulatory Public
Docket (7502P), Environmental Protection Agency, 1200 Pennsylvania
Ave., NW., Washington, DC 20460-0001.
Delivery: OPP Regulatory Public Docket (7502P),
Environmental Protection Agency, Rm. S-4400, One Potomac Yard (South
Bldg.), 2777 S. Crystal Dr., Arlington, VA. Deliveries are only
accepted during the Docket Facility's normal hours of operation (8:30
a.m. to 4 p.m., Monday through Friday, excluding legal holidays).
Special arrangements should be made for deliveries of boxed
information. The Docket Facility telephone number is (703) 305-5805.
II. Summary of Petitioned-for Tolerance
In the Federal Registers of September 4, 2009 (74 FR 45848) (FRL-
8434-4) and March 19, 2010 (75 FR 13277) (FRL-8813-2), EPA issued
notices pursuant to section 408(d)(3) of FFDCA, 21 U.S.C. 346a(d)(3),
announcing the filing of pesticide petitions (PP 9F7563 and PP 9F7667)
by Syngenta Crop Protection, Inc., PO Box 18300, Greensboro, NC 27419-
8300. The petitions requested that 40 CFR 180.433
[[Page 12878]]
be amended by establishing tolerances for residues of the herbicide
fomesafen, 5-[2-cloro-4-(trifluoromethyl)phenoxy]-N-(methylsulfonyl)-2-
nitrobenzamide, in or on potato and tomato (PP 9F7563); and pepper (PP
9F7667) at 0.025 parts per million (ppm). Those notices referenced
summaries of the petitions prepared by Syngenta Crop Protection, Inc.,
the registrant, which are available in the dockets, https://www.regulations.gov. There were no comments received in response to the
notice of filing of PP 9F7563. Comments were received on the notice of
filing of PP 9F7667. EPA's response to these comments is discussed in
Unit IV.C.
EPA has revised the proposed tolerance expression and the commodity
terms for peppers in accordance with current Agency policy. These
revisions are discussed 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 section 408(b)(2)(D) of FFDCA, and the factors
specified in section 408(b)(2)(D) of FFDCA, EPA has reviewed the
available scientific data and other relevant information in support of
this action. EPA has sufficient data to assess the hazards of and to
make a determination on aggregate exposure for fomesafen including
exposure resulting from the tolerances established by this action.
EPA's assessment of exposures and risks associated with fomesafen
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.
Fomesafen has a low order of acute toxicity by the oral route of
exposure, is severely irritating to the eye, and is moderately
irritating to the skin. In the subchronic and chronic toxicity studies
in rats and mice, food consumption or food efficiency, body weight/body
weight gain, and histopathological changes in the liver were the
parameters that were most often affected. Dogs and mice also showed
hematological changes (e.g., decreased erythrocyte count, hemoglobin,
or hematocrit). There was no evidence of neurotoxicity or
immunotoxicity in the toxicological studies with fomesafen. There was
no evidence that fomesafen results in increased susceptibility of rat
or rabbit fetuses in the prenatal developmental studies or in young
rats in the 2-generation reproduction study.
There was no evidence of carcinogenicity in the rat chronic
toxicity/carcinogenicity study. Liver tumors were produced in the mouse
carcinogenicity study; however, EPA classified fomesafen as ``Not
Likely to be Carcinogenic to Humans,'' based on the weight-of-evidence
supporting activation of peroxisome proliferator-activated receptor
alpha (PPAR[alpha]) as the mode of action for fomesafen-induced
hepatocarcinogenesis in mice. The data did not support either
mutagenesis or cytotoxicity followed by regenerative proliferation as
alternative modes of action. While the proposed mode of action for
liver tumors in mice is theoretically plausible in humans, it is
unlikely to take place in humans based on quantitative species
differences in PPAR[alpha] activation and toxicokinetics. Detailed
information on the factors EPA considered in making this determination
can be found at https://www.regulations.gov in the document ``FOMESAFEN:
Second Report of the Cancer Assessment Review Committee'' in docket ID
number EPA-HQ-OPP-2010-0122.
Specific information on the studies received and the nature of the
adverse effects caused by fomesafen 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 the document ``Fomesafen Sodium: Human Health
Risk Assessment for the Establishment of Tolerances and Registration of
New Uses of Fomesafen Sodium on Potatoes and Peppers,'' p. 30 in docket
ID number EPA-HQ-OPP-2010-0122.
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 fomesafen used for
human risk assessment is shown the Table of this unit.
[[Page 12879]]
Table--Summary of Toxicological Doses and Endpoints for Fomesafen for Use in Human Health Risk Assessment
----------------------------------------------------------------------------------------------------------------
Point of departure and
Exposure/scenario uncertainty/safety RfD, PAD, LOC for risk Study and toxicological
factors assessment effects
----------------------------------------------------------------------------------------------------------------
Acute dietary (All population No toxic effects attributable to a single dose of fomesafen were found in
subgroups, including Females 13-49 the database.
years of age, infants and children).
--------------------------------------------------------------------------
Chronic dietary (All populations).... NOAEL= 0.25 mg/kg/day Chronic RfD = 0.0025 mg/ Chronic toxicity--rat
UFA = 10x. kg/day. LOAEL = 5 mg/kg/day
UFH = 10x FQPA SF = 1x. based on hyalinization
of the liver in males.
cPAD = 0.0025 mg/kg/
day.
--------------------------------------------------------------------------
Cancer (Oral, dermal, inhalation).... Fomesafen is classified as ``Not Likely to be Carcinogenic to Humans.''
----------------------------------------------------------------------------------------------------------------
UFA = extrapolation from animal to human (interspecies). UFH = potential variation in sensitivity among members
of the human population (intraspecies). UFL = use of a LOAEL to extrapolate a NOAEL. UFS = use of a short-term
study for long-term risk assessment. UFDB = to account for the absence of data or other data deficiency. FQPA
SF = Food Quality Protection Act Safety Factor. PAD = population adjusted dose (a = acute, c = chronic). RfD =
reference dose. MOE = margin of exposure. LOC = level of concern.
C. Exposure Assessment
1. Dietary exposure from food and feed uses. In evaluating dietary
exposure to fomesafen, EPA considered exposure under the petitioned-for
tolerances as well as all existing fomesafen tolerances in 40 CFR
180.433. EPA assessed dietary exposures from fomesafen 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 fomesafen; therefore, a
quantitative acute dietary exposure assessment is unnecessary.
ii. Chronic exposure. In conducting the chronic dietary exposure
assessment EPA used the food consumption data from the United States
Department of Agriculture (USDA) 1994-1996 and 1998 Nationwide
Continuing Surveys of Food Intakes by Individuals (CSFII). As to
residue levels in food, EPA assumed that residues would be present in
all commodities at the tolerance level and that 100% of all crops are
treated with fomesafen. Dietary Exposure Evaluation Model/Food
Commodity Intake Database (DEEM-FCID\TM\), Version 2.03, default
processing factors were used to determine residues in processed
commodities.
iii. Cancer. Based on the data summarized in Unit III.A., EPA has
concluded that fomesafen 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 or PCT information in the dietary
assessment for fomesafen. Tolerance level residues and 100 PCT were
assumed for all food commodities.
2. Dietary exposure from drinking water. The Agency used a
screening-level water exposure model to estimate residues of fomesafen
in surface water. This simulation model, the Pesticide Root Zone Model/
Exposure Analysis Modeling System (PRZM/EXAMS), takes into account data
on the physical, chemical, and fate/transport characteristics of
fomesafen. 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 model results, the estimated drinking water
concentration (EDWC) of fomesafen for chronic exposures for non-cancer
assessments is estimated to be 10.535 parts per billion (ppb) for
surface water.
The Agency estimated residues of fomesafen in ground water based on
the results of a prospective ground water monitoring study, submitted
by the registrant, Syngenta Crop Protection, Inc. The maximum residue
found in the study, which was conducted on a vulnerable North Carolina
soil using a soybean cropping system, was 1 ppb, an order of magnitude
lower than the modeled estimate for surface water.
The modeled estimate of fomesafen in surface water was used in the
dietary exposure analysis and risk assessment for fomesafen in drinking
water. For chronic dietary risk assessment, the water concentration of
value 10.535 ppb was directly entered into the dietary exposure model
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). Fomesafen 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.''
Fomesafen is a member of the diphenyl ether chemical family. The
common toxicity that these compounds share is induction of liver
effects (liver hypertrophy, increase in liver weight, tumors). Members
of this class have been shown to induce rodent liver effects/tumors
through the activation of the peroxisome proliferator-activated
receptor (PPAR[alpha]). It should be noted that liver hypertrophy and
increases in liver weight are part of the range of morphological
changes that result from chemically-mediated effects on the PPAR[alpha]
receptor and hepatocarcinogenesis. Although PPAR[alpha] agonists can
induce liver rodent tumors, the potential for PPAR[alpha] agonists to
induce liver tumors in other species, including humans, appears to be
unlikely. This is because evidence shows that these other species are
quantitatively less sensitive to the effects of PPAR[alpha] agonism due
to toxicodynamic differences between the human and rodent nuclear
PPAR[alpha] receptor. Thus, while this mode of action for liver tumors
in rodent is
[[Page 12880]]
qualitatively possible in humans, it is unlikely to take place in
humans based on quantitative species differences in PPAR[alpha]
activation and toxicokinetics. Accordingly, although members of the
diphenyl ether family, as well as other classes of compounds, may share
a common hepatocarcinogenic mode of action, cumulative exposure to
PPAR[alpha] agonists is unlikely to induce liver carcinogenesis in
humans.
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. The pre- and postnatal
database for fomesafen includes a prenatal developmental toxicity study
in rabbits, two prenatal developmental toxicity studies in rats, and a
2-generation reproduction toxicity study in rats. The rabbit
developmental study was classified as unacceptable because of bacterial
infection in the colony; however, the study provided information to
assess potential developmental toxicity in rabbits. There was no
significant difference between the treated and control animals for
developmental abnormalities in the rabbit study. In the two rat
developmental studies (considered together), developmental effects
(postimplantation loss) occurred at the same dose causing maternal
toxicity (staining of the ventral fur and significantly decreased body
weight gain (>10%)). In the rat reproduction study, offspring effects
(increased incidence of liver hyalinization in males) occurred at the
same dose causing parental effects (liver histopathology in males and
females of both generations).
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 fomesafen is largely complete, lacking
only immunotoxicity and acute and subchronic neurotoxicity studies. EPA
has evaluated the available toxicity data for fomesafen and determined
that an additional database uncertainty factor is not needed to account
for the lack of these studies. As stated in Unit III.A, fomesafen
primarily impacts the parameters of food consumption or food
efficiency, body weight/body weight gain, and histopathological changes
in the liver. There is no evidence that fomesafen causes immunotoxic or
neurotoxic effects in any of the available toxicity studies, and EPA
does not believe that conducting immunotoxicity and acute/subchronic
neurotoxicity testing will result in a NOAEL less than 0.25 mg/kg/day,
which is presently used as the point of departure for chronic risk
assessment.
ii. There is no indication that fomesafen 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 fomesafen 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 surface water modeling used to assess
exposure to fomesafen in drinking water. These assessments will not
underestimate the exposure and risks posed by fomesafen.
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,
fomesafen 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
fomesafen from food and water will utilize 32% of the cPAD for infants,
less than 1 year old, the population group receiving the greatest
exposure. There are no residential uses for fomesafen.
3. Short- and intermediate-term risk. Short- and intermediate-term
aggregate exposure takes into account short- or intermediate-term
residential exposure plus chronic exposure from food and water
(considered to be a background exposure level). Short-/intermediate-
term adverse effects (hyalinization of hepatocytes, increased
eosinophilia, reduced granulation, increased liver weights in males and
females, and increases in plasma alkaline phosphatase, alanine
transminase and aspartate transaminase in males in the 90-day rat
feeding study) were identified; however, fomesafen is not registered
for any use patterns that would result in short- or intermediate-term
residential exposure. Short- and intermediate-term risks are assessed
based on short- or intermediate-term residential exposure plus chronic
dietary exposure. 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 fomesafen.
4. Aggregate cancer risk for U.S. population. As explained in Unit
III.A, EPA has concluded that the mode of action for fomesafen-induced
hepatocarcinogenesis in mice is unlikely to take place in humans;
therefore, fomesafen is not expected to pose a cancer risk to humans.
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 fomesafen residues.
[[Page 12881]]
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate enforcement methodology (high performance liquid
chromatography with tandem mass spectrometry detection (HPLC/MS/MS)) is
available to enforce the tolerance expression. The method may be
requested from: Chief, Analytical Chemistry Branch, Environmental
Science Center, 701 Mapes Rd., Ft. Meade, MD 20755-5350; telephone
number: (410) 305-2905; e-mail address: residuemethods@epa.gov.
B. International Residue Limits
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 U.N. 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 fomesafen on pepper, potato, or tomato.
C. Response to Comments
An anonymous citizen objected to the presence of any pesticide
residues on food. The Agency understands the commenter's concerns and
recognizes that some individuals believe that pesticides should be
banned completely. However, the existing legal framework provided by
section 408 of the Federal Food, Drug and Cosmetic Act (FFDCA)
contemplates that tolerances greater than zero may be set when persons
seeking such tolerances or exemptions have demonstrated that the
pesticide meets the safety standard imposed by that statute. This
citizen's comment appears to be directed at the underlying statute and
not EPA's implementation of it; the citizen has made no contention that
EPA has acted in violation of the statutory framework.
D. Revisions to Petitioned-for Tolerances
In its petition PP 9F7667, the registrant proposed a tolerance of
0.025 ppm for residues of fomesafen in or on the commodity ``pepper.''
Consistent with recommendations in the Agency's Food and Feed Commodity
Vocabulary, EPA is establishing separate tolerances for ``pepper,
bell'' and ``pepper, non-bell'' at 0.025 ppm each.
EPA is also revising the requested tolerance expression to clarify
the chemical moieties that are covered by the tolerances and specify
how compliance with the tolerances is to be measured. The revised
tolerance expression makes clear that the tolerances cover residues of
the herbicide fomesafen, including its metabolites and degradates, but
that compliance with the tolerance levels is to be determined by
measuring only fomesafen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-N-
(methylsulfonyl)-2-nitrobenzamide.
V. Conclusion
Therefore, tolerances are established for residues of fomesafen,
including its metabolites and degradates, in or on pepper, bell;
pepper, non-bell; potato; and tomato at 0.025 ppm. Compliance with the
tolerance levels is to be determined by measuring only fomesafen, 5-[2-
chloro-4-(trifluoromethyl)phenoxy]-N-(methylsulfonyl)-2-nitrobenzamide.
VI. Statutory and Executive Order Reviews
This final rule establishes tolerances under section 408(d) of
FFDCA in response to a petition submitted to the Agency. The Office of
Management and Budget (OMB) has exempted these types of actions from
review under Executive Order 12866, entitled Regulatory Planning and
Review (58 FR 51735, October 4, 1993). Because this final rule has been
exempted from review under Executive Order 12866, this final rule is
not subject to Executive Order 13211, entitled Actions Concerning
Regulations That Significantly Affect Energy Supply, Distribution, or
Use (66 FR 28355, May 22, 2001) or Executive Order 13045, entitled
Protection of Children from Environmental Health Risks and Safety Risks
(62 FR 19885, April 23, 1997). This final rule does not contain any
information collections subject to OMB approval under the Paperwork
Reduction Act (PRA), 44 U.S.C. 3501 et seq., nor does it require any
special considerations under Executive Order 12898, entitled Federal
Actions to Address Environmental Justice in Minority Populations and
Low-Income Populations (59 FR 7629, February 16, 1994).
Since tolerances and exemptions that are established on the basis
of a petition under section 408(d) of FFDCA, such as the tolerance in
this final rule, do not require the issuance of a proposed rule, the
requirements of the Regulatory Flexibility Act (RFA) (5 U.S.C. 601 et
seq.) do not apply.
This final rule directly regulates growers, food processors, food
handlers, and food retailers, not States or Tribes, nor does this
action alter the relationships or distribution of power and
responsibilities established by Congress in the preemption provisions
of section 408(n)(4) of FFDCA. As such, the Agency has determined that
this action will not have a substantial direct effect on States or
Tribal governments, on the relationship between the national government
and the States or Tribal governments, or on the distribution of power
and responsibilities among the various levels of government or between
the Federal Government and Indian Tribes. Thus, the Agency has
determined that Executive Order 13132, entitled Federalism (64 FR
43255, August 10, 1999) and Executive Order 13175, entitled
Consultation and Coordination with Indian Tribal Governments (65 FR
67249, November 9, 2000) do not apply to this final rule. In addition,
this final rule does not impose any enforceable duty or contain any
unfunded mandate as described under Title II of the Unfunded Mandates
Reform Act of 1995 (UMRA) (Pub. L. 104-4).
This action does not involve any technical standards that would
require Agency consideration of voluntary consensus standards pursuant
to section 12(d) of the National Technology Transfer and Advancement
Act of 1995 (NTTAA), Public Law 104-113, section 12(d) (15 U.S.C. 272
note).
VII. Congressional Review Act
The Congressional Review Act, 5 U.S.C. 801 et seq., generally
provides that before a rule may take effect, the agency promulgating
the rule must submit a rule report to each House of the Congress and to
the Comptroller General of the United States. EPA will submit a report
containing this rule and other required information to the U.S. Senate,
the U.S. House of Representatives, and the Comptroller General of the
United States prior to publication of this final rule in the Federal
Register. This final rule is not a ``major rule'' as defined by 5
U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection, Administrative practice and procedure,
Agricultural commodities, Pesticides and pests, Reporting and
recordkeeping requirements.
[[Page 12882]]
Dated: February 28, 2011.
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. Section 180.433 is amended by revising the introductory text in
paragraph (a) and alphabetically adding the following commodities to
the table in paragraph (a) to read as follows:
Sec. 180.433 Fomesafen; tolerances for residues.
(a) General. Tolerances are established for residues of the
herbicide fomesafen, including its metabolites and degradates, in or on
the following commodities. Compliance with the tolerance levels
specified in the following table below is to be determined by measuring
only fomesafen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-N-
(methylsulfonyl)-2-nitrobenzamide, in or on the commodity.
------------------------------------------------------------------------
Parts per
Commodity million
------------------------------------------------------------------------
* * * *
Pepper, bell................................................ 0.025
Pepper, non-bell............................................ 0.025
Potato...................................................... 0.025
* * * *
Tomato...................................................... 0.025
------------------------------------------------------------------------
* * * * *
[FR Doc. 2011-5070 Filed 3-8-11; 8:45 am]
BILLING CODE 6560-50-P