Metrafenone; Pesticide Tolerance, 54912-54917 [E6-15475]
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54912
Federal Register / Vol. 71, No. 182 / Wednesday, September 20, 2006 / Rules and Regulations
This action does not involve technical
standards. Therefore, EPA did not
consider the use of any voluntary
consensus standards.
J. Congressional Review Act
The Congressional Review Act, 5
U.S.C. 801 et seq., as added by the Small
Business Regulatory Enforcement
Fairness Act of 1996, generally provides
that before a rule may take effect, the
agency promulgating the rule must
submit a rule report, which includes a
copy of the rule, 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 the rule in
the Federal Register. A major rule
cannot take effect until 60 days after it
is published in the Federal Register.
This action is not a ‘‘major rule’’ as
defined by 5 U.S.C. 804(2). This rule
will be effective January 1, 2007.
List of Subjects in 40 CFR Part 80
Environmental protection, Fuel
additives, Gasoline, Imports, Labeling,
Motor vehicle pollution, Penalties,
Reporting and recordkeeping
requirements.
Dated: September 14, 2006.
Stephen L. Johnson,
Administrator.
For the reasons set forth in the
preamble, title 40, Chapter 1 of the Code
of Federal Regulations is amended as
follows:
I
PART 80—REGULATION OF FUELS
AND FUEL ADDITIVES
1. The authority citation for part 80
continues to read as follows:
I
Authority: 42 U.S.C. 7414, 7545 and
7601(a).
2. Section 80.285 is amended by
revising paragraph (b)(1)(ii) to read as
follows:
I
§ 80.285 Who may generate credits under
the ABT program?
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(b) * * *
(1) * * *
(ii) Refiners and importers of gasoline
designated as GPA gasoline under
§ 80.219, using the least of 150.00 ppm,
or the refinery’s or importer’s 1997–98
baseline calculated under § 80.295 plus
30.00 ppm, or the refinery’s lowest
annual average sulfur level for any year
from 2000 through 2003 during which
the refinery generated credits or
allotments plus 30.00 ppm (for any
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party generating credits under both
paragraphs (b)(1)(i) of this section and
this paragraph (b)(1)(ii), such credits
must be calculated separately); or
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I 3. Section 80.310 is amended by
revising paragraphs (a) and (b) to read
as follows:
§ 80.310 How are credits generated
beginning in 2004?
(a) A refiner for any refinery, or an
importer, may generate credits in 2004
and thereafter if the annual average
sulfur level for gasoline produced or
imported for the averaging period is less
than 30.00 ppm; or, for refiners that are
subject to the small refiner standards in
§ 80.240, the small refiner annual
average sulfur standard applicable to
that refinery; or, for refiners and
importers subject to the GPA standards
in § 80.216, the least of 150.00 ppm, or
the refinery’s or importer’s 1997–1998
sulfur level calculated under § 80.295
plus 30.00 ppm, or the refinery’s lowest
annual average sulfur level for any year
from 2000 through 2003 during which
the refinery generated credits or
allotments plus 30.00 ppm.
(b) Credits are calculated as follows:
CRa = Va × (SCredit ¥ Sa)
Where:
CRa = Credits generated for the averaging
period.
Va = Total annual volume of gasoline
produced at a refinery or imported
during the averaging period.
SCredit = 30.00 ppm; or the sulfur standard for
a small refinery established under
§ 80.240; or, for gasoline designated as
GPA gasoline under § 80.219, the least of
150.00 ppm, or the refinery’s or
importer’s 1997–1998 sulfur level
calculated under § 80.295 plus 30.00
ppm, or the refinery’s lowest annual
average sulfur level for any year from
2000 through 2003 during which the
refinery generated credits or allotments
plus 30.00 ppm.
Sa = Actual annual average sulfur level,
calculated in accordance with the
provisions of § 80.205, for gasoline
produced at a refinery or imported
during the averaging period, exclusive of
any credits.
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4. Section 80.415 is amended by
revising paragraph (a)(2)(iii) to read as
follows:
I
§ 80.415 What are the attest engagement
requirements for gasoline sulfur
compliance applicable to refiners and
importers?
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(a) * * *
(2) * * *
(iii) If the annual average sulfur level
for any year in which credits were
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generated for 2000 through 2003 was
less than the baseline level under
paragraph (a)(1) of this section, for small
refiners report as a finding the lowest
annual sulfur level as the new baseline
value for purposes of establishing the
small refiner standards under § 80.240,
and for GPA gasoline report as a finding
the lowest annual sulfur level plus
30.00 ppm as the new sulfur level for
purposes of credit generation under
§ 80.310, if lower than 150.00 ppm.
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[FR Doc. 06–7809 Filed 9–19–06; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2006–0324; FRL–8093–7]
Metrafenone; Pesticide Tolerance
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
SUMMARY: This regulation establishes a
tolerance for residues of metrafenone,
(3-bromo-6-methoxy-2methylphenyl)(2,3,4-trimethoxy-6methylphenyl)methanone, in or on
imported grape at 0.6 parts per million
(ppm), with no U.S. registration. BASF
Corporation requested this tolerance
under the Federal Food, Drug, and
Cosmetic Act (FFDCA), as amended by
the Food Quality Protection Act of 1996
(FQPA).
DATES: This regulation is effective
September 20, 2006. Objections and
requests for hearings must be received
on or before November 20, 2006, and
must be filed in accordance with the
instructions provided in 40 CFR part
178 (see also Unit I.C. of the
SUPPLEMENTARY INFORMATION).
ADDRESSES: EPA has established a
docket for this action under docket
identification (ID) number EPA–HQ–
OPP–2006–0324. All documents in the
docket are listed in the index for the
docket. 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–
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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:
Janet Whitehurst, Registration Division
(7505P), Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington,
DC 20460–0001; telephone number:
(703) 305–6129; e-mail address:
janet.whitehurst@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
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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:
• Crop production (NAICS code 111),
e.g., agricultural workers; greenhouse,
nursery, and floriculture workers;
farmers.
• Animal production (NAICS code
112), e.g., cattle ranchers and farmers,
dairy cattle farmers, livestock farmers.
• Food manufacturing (NAICS code
311), e.g., agricultural workers; farmers;
greenhouse, nursery, and floriculture
workers; ranchers; pesticide applicators.
• Pesticide manufacturing (NAICS
code 32532), e.g., agricultural workers;
commercial applicators; farmers;
greenhouse, nursery, and floriculture
workers; residential users.
This listing is not intended to be
exhaustive, but rather provides a guide
for readers regarding entities likely to be
affected by this action. Other types of
entities not listed in this unit could also
be affected. The North American
Industrial Classification System
(NAICS) codes have been provided to
assist you and others in determining
whether this action might apply to
certain entities. If you have any
questions regarding the applicability of
this action to a particular entity, consult
the person listed under FOR FURTHER
INFORMATION CONTACT.
B. How Can I Access Electronic Copies
of this Document?
In addition to accessing an electronic
copy of this Federal Register document
through the electronic docket at https://
www.regulations.gov, you may access
this Federal Register document
electronically through the EPA Internet
under the ‘‘Federal Register’’ listings at
https://www.epa.gov/fedrgstr. You may
also access a frequently updated
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electronic version of 40 CFR part 180
through the Government Printing
Office’s pilot e-CFR site at https://
www.gpoaccess.gov/ecfr. To access the
OPPTS Harmonized Guidelines
referenced in this document, go directly
to the guidelines at https://www.epa.gpo/
opptsfrs/home/guidelin.htm.
C. Can I File an Objection or Hearing
Request?
Under section 408(g) of FFDCA, as
amended by FQPA, any person may file
an objection to any aspect of this
regulation and may also request a
hearing on those objections. The EPA
procedural regulations which govern the
submission of objections and requests
for hearings appear in 40 CFR part 178.
You must file your objection or request
a hearing on this regulation in
accordance with the instructions
provided in 40 CFR part 178. To ensure
proper receipt by EPA, you must
identify docket ID number EPA–HQ–
OPP–2006–0324 in the subject line on
the first page of your submission. All
requests must be in writing, and must be
mailed or delivered to the Hearing Clerk
on or before November 20, 2006.
In addition to filing an objection or
hearing request with the Hearing Clerk
as described in 40 CFR part 178, please
submit a copy of the filing that does not
contain any CBI for inclusion in the
public docket that is described in
ADDRESSES. Information not marked
confidential pursuant to 40 CFR part 2
may be disclosed publicly by EPA
without prior notice. Submit your
copies, identified by docket ID number
EPA–HQ–OPP–2006–0324, by one of
the following methods:
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the on-line
instructions for submitting comments.
• Mail: Office of Pesticide Programs
(OPP) Regulatory Public Docket (7502P),
Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington,
DC 20460–0001.
• Delivery: OPP Regulatory Public
Docket (7502P), Environmental
Protection Agency, Rm. S–4400, One
Potomac Yard (South Bldg.), 2777 S.
Crystal Dr., Arlington, VA. Deliveries
are only accepted during the Docket’s
normal hours of operation (8:30 a.m. to
4 p.m., Monday through Friday,
excluding legal holidays). Special
arrangements should be made for
deliveries of boxed information. The
Docket Facility telephone number is
(703) 305–5805.
II. Background and Statutory Findings
In the Federal Register of May 10,
2006 (71 FR 27242–27243) (FRL–8058–
2), EPA issued a notice pursuant to
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section 408(d)(3) of FFDCA, 21 U.S.C.
346a(d)(3), announcing the filing of a
pesticide petition (PP 4E6884) by BASF
Corporation, 26 Davis Dr., P.O. Box
13528, Research Triangle Park, NC
27709. The petition requested that 40
CFR 180.624 be amended by
establishing a tolerance for residues of
the fungicide metrafenone, (3-bromo-6methoxy-2-methylphenyl)(2,3,4trimethoxy-6-methylphenyl)methanone,
in or on imported table and wine grapes,
at 0.5 ppm. That notice included a
summary of the petition prepared by
BASF Corporation, the registrant. The
registrant is seeking a tolerance on
imported grapes and its processed
commodities. Following review of the
residue data, EPA has increased the
tolerance level for grapes from 0.5 ppm
to 0.6 ppm and concluded that
tolerances are not necessary for
processed grape commodities. EPA’s
statistical analysis of the residue data
indicates that 0.6 ppm better represents
a value that should not be exceeded in
grapes and processed grape
commodities by any application of the
pesticide in conformity with its uses.
Tolerances are not necessary for
processed grape commodities because
residues on those commodities are
unlikely to exceed the 0.6 ppm level in
the grape tolerance. Under the FFDCA,
tolerances for raw agricultural
commodities also apply to processed
foods made from the raw commodities
(21 U.S.C. 346a(a)(2)). Comments were
received on the notice of filing. EPA’s
response to these comments are
discussed in Unit IV.C.
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...’’
EPA performs a number of analyses to
determine the risks from aggregate
exposure to pesticide residues. For
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further discussion of the regulatory
requirements of section 408 of FFDCA
and a complete description of the risk
assessment process, see:
• https://www.epa.gov/fedrgstr/EPAPEST/1997/November/Day-26/
p30948.htm.
• https://www.epa.gov/oppfead1/trac/
science.
• https://www.epa.gov/pesticides/
factsheets/riskassess.htm.
• https://www.epa.gov/pesticides/trac/
science/aggregate.pdf.
III. Aggregate Risk Assessment and
Determination of Safety
Consistent with 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,
consistent with section 408(b)(2) of
FFDCA, for a tolerance for residues of
metrafenone on grape at 0.6 ppm with
no U.S. registration. EPA’s assessment
of exposures and risks associated with
establishing the import tolerance
follows.
A. Toxicological Profile
EPA has evaluated the available
toxicity data and considered its validity,
completeness, and reliability as well as
the relationship of the results of the
studies to human risk. EPA has also
considered available information
concerning the variability of the
sensitivities of major identifiable
subgroups of consumers, including
infants and children. The toxicology
database for metrafenone is complete
and adequate for selection of doses and
endpoints to be used in this risk
assessment. The toxic effects caused by
metrafenone are discussed in a
document entitled, Metrafenone:
Human Health Risk Assessment for
Proposed Use on Grapes that can be
found at https://www.regulations.gov in
the docket ID number EPA–HQ–OPP–
2006–0324.
B. Toxicological Endpoints
For hazards that have a threshold
below which there is no appreciable
risk, the dose at which no adverse
effects are observed (the NOAEL) from
the toxicology study identified as
appropriate for use in risk assessment is
used to estimate the toxicological level
of concern (LOC). However, the lowest
dose at which adverse effects of concern
are identified (the LOAEL) is sometimes
used for risk assessment if no NOAEL
was achieved in the toxicology study
selected. An uncertainty factor (UF) is
applied to reflect uncertainties inherent
in the extrapolation from laboratory
animal data to humans and in the
variations in sensitivity among members
of the human population as well as
other unknowns.
The linear default risk methodology
(Q*) is the primary method currently
used by the Agency to quantify nonthreshold hazards such as cancer. The
Q* approach assumes that any amount
of exposure will lead to some degree of
cancer risk, estimates risk in terms of
the probability of occurrence of
additional cancer cases. More
information can be found on the general
principles EPA uses in risk
characterization at:
• https://www.epa.gov/pesticides/
factsheets/riskassess.htm.
• https://www.epa.gov/oppfead1/trac/
science.
A summary of the toxicological
endpoints for metrafenone used for
human risk assessment is shown in
Table 1 of this unit:
TABLE 1.—SUMMARY OF TOXICOLOGICAL DOSE AND ENDPOINTS FOR METRAFENONE FOR USE IN HUMAN RISK
ASSESSMENT
Exposure scenario
Chronic dietary
(All populations)
Cancer
(Oral, dermal, inhalation)
Dose used in risk assessment,
UF
NOAEL= 25 milligram/kilogram/
day (mg/kg/day)
UF=100
Chronic RfD=0.25mg/kg/day
Special FQPA SF and level of
concern for risk assessment
Study and toxicological effects
cPAD= cRfD/Special FQPA SF
Special FQPA SF = 1
cPAD= 0.25
Combined
chronic/carcinogenicity—rat
LOAEL 260 (mg/kg/day): Based
on
hepatotoxicity
and
nephrotoxicity in both sexes.
Classification: ‘‘Suggestive Evidence of Carcinogenicity.’’ The chronic RfD is protective of cancer effects.
UF = uncertainty factor, FQPA SF = Special FQPA safety factor, NOAEL = no observed adverse effect level, LOAEL = lowest observed adverse effect level, PAD = population adjusted dose (a = acute, c = chronic) RfD = reference dose.
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C. Exposure Assessment
1. Dietary exposure from food and
feed uses. Tolerances have been
proposed (40 CFR 180.624) for the
residues of metrafenone, in or on
imported table and wine Grapes. There
are no registrations for use of
metrafenone in the United States. There
are no major livestock feed items
associated with the use on imported
grapes. Therefore, residues in livestock
commodities are not relevant to the
establishment of import tolerances for
grapes. Risk assessments were
conducted by EPA to assess dietary
exposures from metrafenone in food as
follows:
i. Acute exposure. Quantitative acute
dietary exposure and risk assessments
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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 acute reference dose was
established nor was a dietary endpoint
identified in either the general
population or for females aged 13–49
years. There were no appropriate
studies that demonstrated evidence of
toxicity attributable to a single dose of
metrafenone for these populations. As a
result, a quantitative acute dietary
exposure assessment is unnecessary.
ii. Chronic exposure. In conducting
the chronic dietary exposure assessment
EPA used the Dietary Exposure
Evaluation Model software with the
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Food Commodity Intake Database
(DEEM-FCIDTM), which incorporates
food consumption data as reported by
respondents in the U.S. Department of
Agriculture (USDA) 1994–1996 and
1998 Nationwide Continuing Surveys of
Food Intake by Individuals (CSFII), and
accumulated exposure to the chemical
for each commodity. The dietary
assessment included just grapes, the
only source of residues for metrafenone.
It was assumed that 100% of all grape
commodities contained tolerance level
residues.
iii. Cancer. Although metrafenone is
considered to be a possible human
carcinogen, the risk assessment based
on chronic effects is considered
protective of cancer effects; therefore, a
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cancer dietary analysis was not
performed. EPA classified metrafenone
as ‘‘Suggestive Evidence of
Carcinogenicity,’’ and concluded that
human risk to liver tumorigenesis
would not be expected at exposure
levels that do not cause tumors in mice.
The NOAEL and LOAEL selected for the
cRfD are based on hepatotoxicity and
nephrotoxicity observed at doses lower
than the liver tumor response dose.
Thus, the cRfD is protective of the
cancer effects. This conclusion was
based on the following weight-ofevidence considerations:
a. There was a treatment-related
increase in hepatocellular adenomas
and adenomas plus carcinomas in male
mice and only at the highest dose tested
(HDT) (limit dose) of 1,109 mg/kg/day.
Although there was an increase in the
incidence of hepatocellular adenomas in
female rats, this increase occurred only
at the HDT, 1,493 mg/kg/day, which
was considered by the EPA to be above
the maximum tolerated dose (MTD) and,
therefore, was not relevant.
b. There were no treatment-related
tumors seen in male rats or female mice.
c. Metrafenone did not appear to be
genotoxic.
d. The registrant submitted three
‘‘mode of action’’ studies in rats. The
EPA considered that, because the
increased incidence in tumors in rats
occurred at a dose above the MTD, these
studies could not be used to explain the
mode of action. The registrant did not
submit any ‘‘mode of action’’ studies in
mice. Therefore, as EPA considered an
increase in hepatocellular adenomas
and adenomas plus carcinomas to be
relevant only in mice, it was determined
that no ‘‘mode of action’’ studies were
applicable to these tumors. EPA
indicated that the results of the mode of
action studies in rats could not be
‘‘assumed’’ to be relevant in the mouse.
iv. Anticipated residue and percent
crop treated (PCT) information.
Anticipated residues and PCT data were
not used for the conservative dietary
exposure analysis.
2. Dietary exposure from drinking
water. As there are no U.S. registrations
or proposed registrations, residues are
not expected in drinking water.
3. From non-dietary exposure. The
term ‘‘residential exposure’’ is used in
this document to refer to nonoccupational, non-dietary exposure
(e.g., for lawn and garden pest control,
indoor pest control, termiticides, and
flea and tick control on pets).
Metrafenone is not registered for use
on any sites that would result in
residential exposure.
4. Cumulative effects from substances
with a common mechanism of toxicity.
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Section 408(b)(2)(D)(v) of FFDCA
requires that, when considering whether
to establish, modify, or revoke a
tolerance, the Agency consider
‘‘available information’’ concerning the
cumulative effects of a particular
pesticide’s residues and ‘‘other
substances that have a common
mechanism of toxicity.’’
Unlike other pesticides for which EPA
has followed a cumulative risk approach
based on a common mechanism of
toxicity, EPA has not made a common
mechanism of toxicity finding as to
metrafenone and any other substances
and metrafenone does not appear to
produce a toxic metabolite produced by
other substances. For the purposes of
this tolerance action, therefore, EPA has
not assumed that metrafenone has a
common mechanism of toxicity with
other substances. For information
regarding EPA’s efforts to determine
which chemicals have a common
mechanism of toxicity and to evaluate
the cumulative effects of such
chemicals, see the policy statements
released by EPA’s Office of Pesticide
Programs concerning common
mechanism determinations and
procedures for cumulating effects from
substances found to have a common
mechanism on EPA’s website at https://
www.epa.gov/pesticides/cumulative.
D. Safety Factor for Infants and
Children
1.In general. Section 408 of FFDCA
provides that EPA shall apply an
additional tenfold margin of safety for
infants and children in the case of
threshold effects to account for prenatal
and postnatal toxicity and the
completeness of the 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. Margins of safety are
incorporated into EPA risk assessments
either directly through use of a MOE
analysis or through using UFs (safety) in
calculating a dose level that poses no
appreciable risk to humans. In applying
this provision, EPA either retains the
default value of 10X when reliable data
do not support the choice of a different
factor, or, if reliable data are available,
EPA uses a different additional safety
factor value based on the use of
traditional UFs and/or special FQPA
SFs, as appropriate.
2. Prenatal and postnatal sensitivity.
The toxicology database for metrafenone
is complete and adequate to characterize
potential pre- and/or postnatal risk for
infants and children. Acceptable/
guideline studies for developmental
toxicity in rats and rabbits as well as a
2–generation reproduction study in rats
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54915
were available for consideration during
endpoint selection.
3. Conclusion. After evaluating the
toxicological and exposure data, EPA
recommends that the FQPA SF be
reduced to 1X because:
i. The toxicology database is
complete.
ii. There was no evidence of increased
qualitative or quantitative susceptibility
observed in the rat or rabbit
developmental as well as the rat
reproduction studies; there are no
residual uncertainties with regard to
pre- and postnatal toxicity.
iii. The dietary food exposure
assessment is based on EPArecommended tolerance-level residues
and assumes 100% crop treated for all
commodities, which results in very
high-end estimates of dietary exposure.
iv. The proposed use is for import
tolerances; therefore, residential and
occupational exposures are not
anticipated.
E. Aggregate Risks and Determination of
Safety
In accordance with the FQPA, EPA
must consider and aggregate pesticide
exposures and risks from three major
sources: Food, drinking water, and
residential exposures. In an aggregate
assessment, exposures from relevant
sources are added together and
compared to quantitative estimates of
hazard (e.g., a NOAEL or PAD), or the
risks themselves can be aggregated.
When aggregating exposures and risks
from various sources, EPA considers
both the route and duration of exposure.
The registrant is seeking import
tolerances on grapes and its processed
commodities and the risk assessment
includes only dietary exposure to
metrafenone. There is no expectation
that exposure to metrafenone would
occur via water consumption or
residential use. Therefore, an aggregate
exposure risk assessment is equivalent
to the dietary risk assessment.
1. Acute risk. Because there was no
evidence of toxicity for metrafenone
attributable to a single dose,
metrafenone is not expected to pose an
acute risk.
2. Chronic risk. As there are no U.S.
registrations or proposed registrations,
the chronic aggregate risk is equivalent
to the chronic dietary risk. Based on the
exposure assumptions discussed in this
unit, the chronic exposure for the
general U.S. population is 0.1% of the
cPAD. The most highly exposed
population subgroup is children 1–2
years, which utilizes 0.8% of the cPAD.
The dietary risk estimates are all below
EPA’s level of concern.
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3. Short-term risk. Short-term
aggregate exposure takes into account
residential exposure plus chronic
exposure to food and water (considered
to be a background exposure level. As
there are no U.S. registrations or
proposed registrations for metrafenone,
there will be no exposures from
residential uses or residues in drinking
water. Therefore, the aggregate risk is
the risk from food (grape commodities)
only. The dietary risk estimates are all
below EPA’s level of concern.
4. Intermediate-term risk.
Intermediate-term aggregate exposure
takes into account residential exposure
plus chronic exposure to food and water
(considered to be a background
exposure level). As there are no U.S.
registrations or proposed registrations
for metrafenone, there will be no
exposures from residential uses or
residues in drinking water. Therefore,
the aggregate risk is the risk from food
(grape commodities) only. The dietary
risk estimates are all below EPA’s level
of concern.
5. Aggregate cancer risk for U.S.
population. EPA considers the cRfD to
be protective of the cancer effects and,
as indicated in this unit, exposure is
well below this level.
6. Determination of safety. Based on
these risk assessments, EPA concludes
that there is a reasonable certainty that
no harm will result to the general
population, and to infants and children
from aggregate exposure to metrafenone
residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
The petitioner has submitted gas
chromatography methods with electron
capture and mass selective detection for
determining residues of metrafenone in
grapes and wine. These methods are
considered adequate for tolerance
enforcement purposes. In addition,
there is good recovery of metrafenone
from grapes using the Food and Drug
Administration (FDA) multi-residue
method protocols. The metrafenone
methods may be requested from: Chief,
Analytical Chemistry Branch,
Environmental Science Center, 701
Mapes Rd., Ft. Meade, MD 20755–5350;
telephone number: (410) 305–2905; email address: residuemethods@epa.gov.
rwilkins on PROD1PC63 with RULES
B. International Residue Limits
There are no specific CODEX
maximum residue limits (MRLs) for
metrafenone. Although the European
Food Safety Authority has proposed a
European Union MRL of 0.5 ppm for
grapes, the MRL has yet to be
harmonized between member states.
VerDate Aug<31>2005
18:46 Sep 19, 2006
Jkt 208001
The registrant is seeking import
tolerance on grapes and its processed
commodities. Following review of the
residue and metabolism data, EPA has
made a minor change to the proposed
tolerance. For grapes EPA expanded the
tolerance level for grapes from 0.5 ppm
to 0.6 ppm.
C. Response to Comments
One comment, dated May 10, 2006,
was received from B. Sachau. Ms.
Sachau’s comments regarding general
exposure to pesticides contained no
scientific data or evidence to rebut the
Agency’s conclusion that there is a
reasonable certainty that no harm will
result from aggregate exposure to
metrafenone, including all anticipated
dietary exposures and other exposures
for which there is reliable information.
This comment as well as her comments
regarding animal testing have been
responded to by the Agency on several
occasions. For examples, see the
Federal Register issues of January 7,
2005 (70 FR 1349) (FRL–7691–4) and
October 29, 2004 (69 FR 63083) (FRL–
7681–9).
V. Conclusion
Therefore, the tolerance is established
for residues of metrafenone, (3-bromo-6methoxy-2-methylphenyl)(2,3,4trimethoxy-6-methylphenyl)methanone,
in or on grape at 0.6 ppm, with no U.S.
registration.
VI. Statutory and Executive Order
Reviews
This final rule establishes a tolerance
under section 408(d) of FFDCA in
response to a petition submitted to the
Agency. The Office of Management and
Budget (OMB) has exempted these types
of actions from review under Executive
Order 12866, entitled Regulatory
Planning and Review (58 FR 51735,
October 4, 1993). Because this rule has
been exempted from review under
Executive Order 12866 due to its lack of
significance, this rule is not subject to
Executive Order 13211, Actions
Concerning Regulations That
Significantly Affect Energy Supply,
Distribution, or Use (66 FR 28355, May
22, 2001). 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., or impose any
enforceable duty or contain any
unfunded mandate as described under
Title II of the Unfunded Mandates
Reform Act of 1995 (UMRA) (Public
Law 104–4). Nor does it require any
special considerations under Executive
Order 12898, entitled Federal Actions to
Address Environmental Justice in
PO 00000
Frm 00024
Fmt 4700
Sfmt 4700
Minority Populations and Low-Income
Populations (59 FR 7629, February 16,
1994); or OMB review or any Agency
action under Executive Order 13045,
entitled Protection of Children from
Environmental Health Risks and Safety
Risks (62 FR 19885, April 23, 1997).
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). 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. In addition, the
Agency has determined that this action
will not have a substantial direct effect
on States, on the relationship between
the national government and the States,
or on the distribution of power and
responsibilities among the various
levels of government, as specified in
Executive Order 13132, entitled
Federalism (64 FR 43255, August 10,
1999). Executive Order 13132 requires
EPA to develop an accountable process
to ensure ‘‘meaningful and timely input
by State and local officials in the
development of regulatory policies that
have federalism implications.’’ ‘‘Policies
that have federalism implications’’ is
defined in the Executive order to
include regulations that have
‘‘substantial direct effects on the States,
on the relationship between the national
government and the States, or on the
distribution of power and
responsibilities among the various
levels of government.’’ This final rule
directly regulates growers, food
processors, food handlers, and food
retailers, not States. This action does not
alter the relationships or distribution of
power and responsibilities established
by Congress in the preemption
provisions of section 408(n)(4) of
FFDCA. For these same reasons, the
Agency has determined that this rule
does not have any ‘‘tribal implications’’
as described in Executive Order 13175,
entitled Consultation and Coordination
with Indian Tribal Governments (65 FR
67249, November 6, 2000). Executive
Order 13175, requires EPA to develop
an accountable process to ensure
‘‘meaningful and timely input by tribal
officials in the development of
regulatory policies that have tribal
implications.’’ ‘‘Policies that have tribal
implications’’ is defined in the
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Executive order to include regulations
that have ‘‘substantial direct effects on
one or more Indian tribes, on the
relationship between the Federal
Government and the Indian tribes, or on
the distribution of power and
responsibilities between the Federal
Government and Indian tribes.’’ This
rule will not have substantial direct
effects on tribal governments, on the
relationship between the Federal
Government and Indian tribes, or on the
distribution of power and
responsibilities between the Federal
Government and Indian tribes, as
specified in Executive Order 13175.
Thus, Executive Order 13175 does not
apply to this rule.
VII. Congressional Review Act
The Congressional Review Act, 5
U.S.C. 801 et seq., as added by the Small
Business Regulatory Enforcement
Fairness Act of 1996, generally provides
that before a rule may take effect, the
agency promulgating the rule must
submit a rule report, which includes a
copy of the rule, to each House of the
Congress and to the Comptroller General
of the United States. EPA will submit a
report containing this rule and other
required information to the U.S. Senate,
the U.S. House of Representatives, and
the Comptroller General of the United
States prior to publication of this final
rule in the Federal Register. This final
rule is not a ‘‘major rule’’ as defined by
5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
Dated: September 11, 2006.
James J. Jones,
Director, Office of Pesticide Programs.
Therefore, 40 CFR chapter I is
amended as follows:
I
PART 180—[AMENDED]
1. The authority citation for part 180
continues to read as follows:
I
Authority: 21 U.S.C. 321(q), 346a and 371.
2. Section 180.624 is added to subpart
C to read as follows:
I
rwilkins on PROD1PC63 with RULES
§ 180.624 Metrafenone, tolerances for
residues.
(a) General. Tolerances are
established for residues of metrafenone,
(3-bromo-6-methoxy-2methylphenyl)(2,3,4-trimethoxy-6methylphenyl)methanone, in or on the
following commodities.
VerDate Aug<31>2005
18:46 Sep 19, 2006
Jkt 208001
Parts per
million
Commodity
0.61
Grape ........................................
1 There
is no U.S. registration on grapes as
of September 20, 2006.
(b) Section 18 emergency exemption.
[Reserved]
(c) Tolerances with regional
registrations. [Reserved]
(d) Indirect or inadvertent residues.
[Reserved]
[FR Doc. E6–15475 Filed 9–19–06; 8:45 am]
BILLING CODE 6560–50–S
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2006–0623; FRL–8090–5]
Dithianon; Pesticide Tolerance
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
SUMMARY: This regulation establishes a
tolerance for residues of dithianon,
(5,10-dihydro-5,10-dioxonaphtho(2,3-b)1,4-dithiin-2,3-dicarbonitrile in or on
imported fruit, pome, group 11, and
hop, dried cones. BASF Corporation
requested this tolerance under the
Federal Food, Drug, and Cosmetic Act
(FFDCA), as amended by the Food
Quality Protection Act of 1996 (FQPA).
DATES: This regulation is effective
September 20, 2006. Objections and
requests for hearings must be received
on or before November 20, 2006, and
must be filed in accordance with the
instructions provided in 40 CFR part
178 (see also Unit I.C. of the
SUPPLEMENTARY INFORMATION).
ADDRESSES: EPA has established a
docket for this action under docket
identification (ID) number EPA–HQ–
OPP–2006–0623. All documents in the
docket are listed in the index for the
docket. 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 Building),
2777 S. Crystal Drive, Arlington, VA.
The Docket Facility is open from 8:30
PO 00000
Frm 00025
Fmt 4700
Sfmt 4700
54917
a.m. to 4 p.m., Monday through Friday,
excluding legal holidays. The Docket
telephone number is (703) 305-5805.
FOR FURTHER INFORMATION CONTACT: Rose
Mary Kearns, Registration Division
(7505P), Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington,
DC 20460-0001; telephone number:
(703) 305-5611; e-mail address:
kearns.rosemary@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:
• Crop production (NAICS 111), e.g.,
agricultural workers; greenhouse,
nursery, and floriculture workers;
farmers.
• Animal production (NAICS 112),
e.g., cattle ranchers and farmers, dairy
cattle farmers, livestock farmers.
• Food manufacturing (NAICS 311),
e.g., agricultural workers; farmers;
greenhouse, nursery, and floriculture
workers; ranchers; pesticide applicators.
• Pesticide manufacturing (NAICS
32532), e.g., agricultural workers;
commercial applicators; farmers;
greenhouse, nursery, and floriculture
workers; residential users.
This listing is not intended to be
exhaustive, but rather provides a guide
for readers regarding entities likely to be
affected by this action. Other types of
entities not listed in this unit could also
be affected. The North American
Industrial Classification System
(NAICS) codes have been provided to
assist you and others in determining
whether this action might apply to
certain entities. If you have any
questions regarding the applicability of
this action to a particular entity, consult
the person listed under FOR FURTHER
INFORMATION CONTACT.
B. How Can I Access Electronic Copies
of this Document?
In addition to accessing an electronic
copy of this Federal Register document
through the electronic docket at https://
www.regulations.gov, you may access
this Federal Register document
electronically through the EPA Internet
under the ‘‘Federal Register’’ listings at
https://www.epa.gov/fedrgstr. You may
also access a frequently updated
electronic version of 40 CFR part 180
through the Government Printing
Office’s pilot e-CFR site at https://
www.gpoaccess.gov/ecfr. To access the
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20SER1
Agencies
[Federal Register Volume 71, Number 182 (Wednesday, September 20, 2006)]
[Rules and Regulations]
[Pages 54912-54917]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E6-15475]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2006-0324; FRL-8093-7]
Metrafenone; Pesticide Tolerance
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes a tolerance for residues of
metrafenone, (3-bromo-6-methoxy-2-methylphenyl)(2,3,4-trimethoxy-6-
methylphenyl)methanone, in or on imported grape at 0.6 parts per
million (ppm), with no U.S. registration. BASF Corporation requested
this tolerance under the Federal Food, Drug, and Cosmetic Act (FFDCA),
as amended by the Food Quality Protection Act of 1996 (FQPA).
DATES: This regulation is effective September 20, 2006. Objections and
requests for hearings must be received on or before November 20, 2006,
and must be filed in accordance with the instructions provided in 40
CFR part 178 (see also Unit I.C. of the SUPPLEMENTARY INFORMATION).
ADDRESSES: EPA has established a docket for this action under docket
identification (ID) number EPA-HQ-OPP-2006-0324. All documents in the
docket are listed in the index for the docket. 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-
[[Page 54913]]
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: Janet Whitehurst, Registration
Division (7505P), Office of Pesticide Programs, Environmental
Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460-
0001; telephone number: (703) 305-6129; e-mail address:
janet.whitehurst@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:
Crop production (NAICS code 111), e.g., agricultural
workers; greenhouse, nursery, and floriculture workers; farmers.
Animal production (NAICS code 112), e.g., cattle ranchers
and farmers, dairy cattle farmers, livestock farmers.
Food manufacturing (NAICS code 311), e.g., agricultural
workers; farmers; greenhouse, nursery, and floriculture workers;
ranchers; pesticide applicators.
Pesticide manufacturing (NAICS code 32532), e.g.,
agricultural workers; commercial applicators; farmers; greenhouse,
nursery, and floriculture workers; residential users.
This listing is not intended to be exhaustive, but rather provides
a guide for readers regarding entities likely to be affected by this
action. Other types of entities not listed in this unit could also be
affected. The North American Industrial Classification System (NAICS)
codes have been provided to assist you and others in determining
whether this action might apply to certain entities. If you have any
questions regarding the applicability of this action to a particular
entity, consult the person listed under FOR FURTHER INFORMATION
CONTACT.
B. How Can I Access Electronic Copies of this Document?
In addition to accessing an electronic copy of this Federal
Register document through the electronic docket at https://
www.regulations.gov, you may access this Federal Register document
electronically through the EPA Internet under the ``Federal Register''
listings at https://www.epa.gov/fedrgstr. You may also access a
frequently updated electronic version of 40 CFR part 180 through the
Government Printing Office's pilot e-CFR site at https://
www.gpoaccess.gov/ecfr. To access the OPPTS Harmonized Guidelines
referenced in this document, go directly to the guidelines at https://
www.epa.gpo/opptsfrs/home/guidelin.htm.
C. Can I File an Objection or Hearing Request?
Under section 408(g) of FFDCA, as amended by FQPA, any person may
file an objection to any aspect of this regulation and may also request
a hearing on those objections. The EPA procedural regulations which
govern the submission of objections and requests for hearings appear in
40 CFR part 178. You must file your objection or request a hearing on
this regulation in accordance with the instructions provided in 40 CFR
part 178. To ensure proper receipt by EPA, you must identify docket ID
number EPA-HQ-OPP-2006-0324 in the subject line on the first page of
your submission. All requests must be in writing, and must be mailed or
delivered to the Hearing Clerk on or before November 20, 2006.
In addition to filing an objection or hearing request with the
Hearing Clerk as described in 40 CFR part 178, please submit a copy of
the filing that does not contain any CBI for inclusion in the public
docket that is described in ADDRESSES. Information not marked
confidential pursuant to 40 CFR part 2 may be disclosed publicly by EPA
without prior notice. Submit your copies, identified by docket ID
number EPA-HQ-OPP-2006-0324, by one of the following methods:
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the on-line instructions for submitting comments.
Mail: Office of Pesticide Programs (OPP) Regulatory Public
Docket (7502P), Environmental Protection Agency, 1200 Pennsylvania
Ave., NW., Washington, DC 20460-0001.
Delivery: OPP Regulatory Public Docket (7502P),
Environmental Protection Agency, Rm. S-4400, One Potomac Yard (South
Bldg.), 2777 S. Crystal Dr., Arlington, VA. Deliveries are only
accepted during the Docket's normal hours of operation (8:30 a.m. to 4
p.m., Monday through Friday, excluding legal holidays). Special
arrangements should be made for deliveries of boxed information. The
Docket Facility telephone number is (703) 305-5805.
II. Background and Statutory Findings
In the Federal Register of May 10, 2006 (71 FR 27242-27243) (FRL-
8058-2), EPA issued a notice pursuant to section 408(d)(3) of FFDCA, 21
U.S.C. 346a(d)(3), announcing the filing of a pesticide petition (PP
4E6884) by BASF Corporation, 26 Davis Dr., P.O. Box 13528, Research
Triangle Park, NC 27709. The petition requested that 40 CFR 180.624 be
amended by establishing a tolerance for residues of the fungicide
metrafenone, (3-bromo-6-methoxy-2-methylphenyl)(2,3,4-trimethoxy-6-
methylphenyl)methanone, in or on imported table and wine grapes, at 0.5
ppm. That notice included a summary of the petition prepared by BASF
Corporation, the registrant. The registrant is seeking a tolerance on
imported grapes and its processed commodities. Following review of the
residue data, EPA has increased the tolerance level for grapes from 0.5
ppm to 0.6 ppm and concluded that tolerances are not necessary for
processed grape commodities. EPA's statistical analysis of the residue
data indicates that 0.6 ppm better represents a value that should not
be exceeded in grapes and processed grape commodities by any
application of the pesticide in conformity with its uses. Tolerances
are not necessary for processed grape commodities because residues on
those commodities are unlikely to exceed the 0.6 ppm level in the grape
tolerance. Under the FFDCA, tolerances for raw agricultural commodities
also apply to processed foods made from the raw commodities (21 U.S.C.
346a(a)(2)). Comments were received on the notice of filing. EPA's
response to these comments are discussed in Unit IV.C.
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...''
EPA performs a number of analyses to determine the risks from
aggregate exposure to pesticide residues. For
[[Page 54914]]
further discussion of the regulatory requirements of section 408 of
FFDCA and a complete description of the risk assessment process, see:
https://www.epa.gov/fedrgstr/EPA-PEST/1997/November/Day-26/
p30948.htm.
https://www.epa.gov/oppfead1/trac/science.
https://www.epa.gov/pesticides/factsheets/riskassess.htm.
https://www.epa.gov/pesticides/trac/science/aggregate.pdf.
III. Aggregate Risk Assessment and Determination of Safety
Consistent with 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, consistent with section
408(b)(2) of FFDCA, for a tolerance for residues of metrafenone on
grape at 0.6 ppm with no U.S. registration. EPA's assessment of
exposures and risks associated with establishing the import tolerance
follows.
A. Toxicological Profile
EPA has evaluated the available toxicity data and considered its
validity, completeness, and reliability as well as the relationship of
the results of the studies to human risk. EPA has also considered
available information concerning the variability of the sensitivities
of major identifiable subgroups of consumers, including infants and
children. The toxicology database for metrafenone is complete and
adequate for selection of doses and endpoints to be used in this risk
assessment. The toxic effects caused by metrafenone are discussed in a
document entitled, Metrafenone: Human Health Risk Assessment for
Proposed Use on Grapes that can be found at https://www.regulations.gov
in the docket ID number EPA-HQ-OPP-2006-0324.
B. Toxicological Endpoints
For hazards that have a threshold below which there is no
appreciable risk, the dose at which no adverse effects are observed
(the NOAEL) from the toxicology study identified as appropriate for use
in risk assessment is used to estimate the toxicological level of
concern (LOC). However, the lowest dose at which adverse effects of
concern are identified (the LOAEL) is sometimes used for risk
assessment if no NOAEL was achieved in the toxicology study selected.
An uncertainty factor (UF) is applied to reflect uncertainties inherent
in the extrapolation from laboratory animal data to humans and in the
variations in sensitivity among members of the human population as well
as other unknowns.
The linear default risk methodology (Q*) is the primary method
currently used by the Agency to quantify non-threshold hazards such as
cancer. The Q* approach assumes that any amount of exposure will lead
to some degree of cancer risk, estimates risk in terms of the
probability of occurrence of additional cancer cases. More information
can be found on the general principles EPA uses in risk
characterization at:
https://www.epa.gov/pesticides/factsheets/riskassess.htm.
https://www.epa.gov/oppfead1/trac/science.
A summary of the toxicological endpoints for metrafenone used for
human risk assessment is shown in Table 1 of this unit:
Table 1.--Summary of Toxicological Dose and Endpoints for Metrafenone for Use in Human Risk Assessment
----------------------------------------------------------------------------------------------------------------
Special FQPA SF and
Exposure scenario Dose used in risk level of concern for Study and toxicological
assessment, UF risk assessment effects
----------------------------------------------------------------------------------------------------------------
Chronic dietary NOAEL= 25 milligram/ cPAD= cRfD/Special FQPA Combined chronic/
(All populations).................... kilogram/day (mg/kg/ SF carcinogenicity--rat
day) Special FQPA SF = 1.... LOAEL 260 (mg/kg/day):
UF=100................. cPAD= 0.25............. Based on
Chronic RfD=0.25mg/kg/ hepatotoxicity and
day. nephrotoxicity in both
sexes.
Cancer Classification: ``Suggestive Evidence of Carcinogenicity.'' The chronic
(Oral, dermal, inhalation)........... RfD is protective of cancer effects.
----------------------------------------------------------------------------------------------------------------
UF = uncertainty factor, FQPA SF = Special FQPA safety factor, NOAEL = no observed adverse effect level, LOAEL =
lowest observed adverse effect level, PAD = population adjusted dose (a = acute, c = chronic) RfD = reference
dose.
C. Exposure Assessment
1. Dietary exposure from food and feed uses. Tolerances have been
proposed (40 CFR 180.624) for the residues of metrafenone, in or on
imported table and wine Grapes. There are no registrations for use of
metrafenone in the United States. There are no major livestock feed
items associated with the use on imported grapes. Therefore, residues
in livestock commodities are not relevant to the establishment of
import tolerances for grapes. Risk assessments were conducted by EPA to
assess dietary exposures from metrafenone 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 acute reference dose was established nor was a dietary endpoint
identified in either the general population or for females aged 13-49
years. There were no appropriate studies that demonstrated evidence of
toxicity attributable to a single dose of metrafenone for these
populations. As a result, a quantitative acute dietary exposure
assessment is unnecessary.
ii. Chronic exposure. In conducting the chronic dietary exposure
assessment EPA used the Dietary Exposure Evaluation Model software with
the Food Commodity Intake Database (DEEM-FCID\TM\), which incorporates
food consumption data as reported by respondents in the U.S. Department
of Agriculture (USDA) 1994-1996 and 1998 Nationwide Continuing Surveys
of Food Intake by Individuals (CSFII), and accumulated exposure to the
chemical for each commodity. The dietary assessment included just
grapes, the only source of residues for metrafenone. It was assumed
that 100% of all grape commodities contained tolerance level residues.
iii. Cancer. Although metrafenone is considered to be a possible
human carcinogen, the risk assessment based on chronic effects is
considered protective of cancer effects; therefore, a
[[Page 54915]]
cancer dietary analysis was not performed. EPA classified metrafenone
as ``Suggestive Evidence of Carcinogenicity,'' and concluded that human
risk to liver tumorigenesis would not be expected at exposure levels
that do not cause tumors in mice. The NOAEL and LOAEL selected for the
cRfD are based on hepatotoxicity and nephrotoxicity observed at doses
lower than the liver tumor response dose. Thus, the cRfD is protective
of the cancer effects. This conclusion was based on the following
weight-of-evidence considerations:
a. There was a treatment-related increase in hepatocellular
adenomas and adenomas plus carcinomas in male mice and only at the
highest dose tested (HDT) (limit dose) of 1,109 mg/kg/day. Although
there was an increase in the incidence of hepatocellular adenomas in
female rats, this increase occurred only at the HDT, 1,493 mg/kg/day,
which was considered by the EPA to be above the maximum tolerated dose
(MTD) and, therefore, was not relevant.
b. There were no treatment-related tumors seen in male rats or
female mice.
c. Metrafenone did not appear to be genotoxic.
d. The registrant submitted three ``mode of action'' studies in
rats. The EPA considered that, because the increased incidence in
tumors in rats occurred at a dose above the MTD, these studies could
not be used to explain the mode of action. The registrant did not
submit any ``mode of action'' studies in mice. Therefore, as EPA
considered an increase in hepatocellular adenomas and adenomas plus
carcinomas to be relevant only in mice, it was determined that no
``mode of action'' studies were applicable to these tumors. EPA
indicated that the results of the mode of action studies in rats could
not be ``assumed'' to be relevant in the mouse.
iv. Anticipated residue and percent crop treated (PCT) information.
Anticipated residues and PCT data were not used for the conservative
dietary exposure analysis.
2. Dietary exposure from drinking water. As there are no U.S.
registrations or proposed registrations, residues are not expected in
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).
Metrafenone is not registered for use on any sites 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.''
Unlike other pesticides for which EPA has followed a cumulative
risk approach based on a common mechanism of toxicity, EPA has not made
a common mechanism of toxicity finding as to metrafenone and any other
substances and metrafenone does not appear to produce a toxic
metabolite produced by other substances. For the purposes of this
tolerance action, therefore, EPA has not assumed that metrafenone has a
common mechanism of toxicity with other substances. For information
regarding EPA's efforts to determine which chemicals have a common
mechanism of toxicity and to evaluate the cumulative effects of such
chemicals, see the policy statements released by EPA's Office of
Pesticide Programs concerning common mechanism determinations and
procedures for cumulating effects from substances found to have a
common mechanism on EPA's website at https://www.epa.gov/pesticides/
cumulative.
D. Safety Factor for Infants and Children
1.In general. Section 408 of FFDCA provides that EPA shall apply an
additional tenfold margin of safety for infants and children in the
case of threshold effects to account for prenatal and postnatal
toxicity and the completeness of the 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. Margins of safety are
incorporated into EPA risk assessments either directly through use of a
MOE analysis or through using UFs (safety) in calculating a dose level
that poses no appreciable risk to humans. In applying this provision,
EPA either retains the default value of 10X when reliable data do not
support the choice of a different factor, or, if reliable data are
available, EPA uses a different additional safety factor value based on
the use of traditional UFs and/or special FQPA SFs, as appropriate.
2. Prenatal and postnatal sensitivity. The toxicology database for
metrafenone is complete and adequate to characterize potential pre-
and/or postnatal risk for infants and children. Acceptable/guideline
studies for developmental toxicity in rats and rabbits as well as a 2-
generation reproduction study in rats were available for consideration
during endpoint selection.
3. Conclusion. After evaluating the toxicological and exposure
data, EPA recommends that the FQPA SF be reduced to 1X because:
i. The toxicology database is complete.
ii. There was no evidence of increased qualitative or quantitative
susceptibility observed in the rat or rabbit developmental as well as
the rat reproduction studies; there are no residual uncertainties with
regard to pre- and postnatal toxicity.
iii. The dietary food exposure assessment is based on EPA-
recommended tolerance-level residues and assumes 100% crop treated for
all commodities, which results in very high-end estimates of dietary
exposure.
iv. The proposed use is for import tolerances; therefore,
residential and occupational exposures are not anticipated.
E. Aggregate Risks and Determination of Safety
In accordance with the FQPA, EPA must consider and aggregate
pesticide exposures and risks from three major sources: Food, drinking
water, and residential exposures. In an aggregate assessment, exposures
from relevant sources are added together and compared to quantitative
estimates of hazard (e.g., a NOAEL or PAD), or the risks themselves can
be aggregated. When aggregating exposures and risks from various
sources, EPA considers both the route and duration of exposure.
The registrant is seeking import tolerances on grapes and its
processed commodities and the risk assessment includes only dietary
exposure to metrafenone. There is no expectation that exposure to
metrafenone would occur via water consumption or residential use.
Therefore, an aggregate exposure risk assessment is equivalent to the
dietary risk assessment.
1. Acute risk. Because there was no evidence of toxicity for
metrafenone attributable to a single dose, metrafenone is not expected
to pose an acute risk.
2. Chronic risk. As there are no U.S. registrations or proposed
registrations, the chronic aggregate risk is equivalent to the chronic
dietary risk. Based on the exposure assumptions discussed in this unit,
the chronic exposure for the general U.S. population is 0.1% of the
cPAD. The most highly exposed population subgroup is children 1-2
years, which utilizes 0.8% of the cPAD. The dietary risk estimates are
all below EPA's level of concern.
[[Page 54916]]
3. Short-term risk. Short-term aggregate exposure takes into
account residential exposure plus chronic exposure to food and water
(considered to be a background exposure level. As there are no U.S.
registrations or proposed registrations for metrafenone, there will be
no exposures from residential uses or residues in drinking water.
Therefore, the aggregate risk is the risk from food (grape commodities)
only. The dietary risk estimates are all below EPA's level of concern.
4. Intermediate-term risk. Intermediate-term aggregate exposure
takes into account residential exposure plus chronic exposure to food
and water (considered to be a background exposure level). As there are
no U.S. registrations or proposed registrations for metrafenone, there
will be no exposures from residential uses or residues in drinking
water. Therefore, the aggregate risk is the risk from food (grape
commodities) only. The dietary risk estimates are all below EPA's level
of concern.
5. Aggregate cancer risk for U.S. population. EPA considers the
cRfD to be protective of the cancer effects and, as indicated in this
unit, exposure is well below this level.
6. Determination of safety. Based on these risk assessments, EPA
concludes that there is a reasonable certainty that no harm will result
to the general population, and to infants and children from aggregate
exposure to metrafenone residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
The petitioner has submitted gas chromatography methods with
electron capture and mass selective detection for determining residues
of metrafenone in grapes and wine. These methods are considered
adequate for tolerance enforcement purposes. In addition, there is good
recovery of metrafenone from grapes using the Food and Drug
Administration (FDA) multi-residue method protocols. The metrafenone
methods may be requested from: Chief, Analytical Chemistry Branch,
Environmental Science Center, 701 Mapes Rd., Ft. Meade, MD 20755-5350;
telephone number: (410) 305-2905; e-mail address:
residuemethods@epa.gov.
B. International Residue Limits
There are no specific CODEX maximum residue limits (MRLs) for
metrafenone. Although the European Food Safety Authority has proposed a
European Union MRL of 0.5 ppm for grapes, the MRL has yet to be
harmonized between member states. The registrant is seeking import
tolerance on grapes and its processed commodities. Following review of
the residue and metabolism data, EPA has made a minor change to the
proposed tolerance. For grapes EPA expanded the tolerance level for
grapes from 0.5 ppm to 0.6 ppm.
C. Response to Comments
One comment, dated May 10, 2006, was received from B. Sachau. Ms.
Sachau's comments regarding general exposure to pesticides contained no
scientific data or evidence to rebut the Agency's conclusion that there
is a reasonable certainty that no harm will result from aggregate
exposure to metrafenone, including all anticipated dietary exposures
and other exposures for which there is reliable information. This
comment as well as her comments regarding animal testing have been
responded to by the Agency on several occasions. For examples, see the
Federal Register issues of January 7, 2005 (70 FR 1349) (FRL-7691-4)
and October 29, 2004 (69 FR 63083) (FRL-7681-9).
V. Conclusion
Therefore, the tolerance is established for residues of
metrafenone, (3-bromo-6-methoxy-2-methylphenyl)(2,3,4-trimethoxy-6-
methylphenyl)methanone, in or on grape at 0.6 ppm, with no U.S.
registration.
VI. Statutory and Executive Order Reviews
This final rule establishes a tolerance under section 408(d) of
FFDCA in response to a petition submitted to the Agency. The Office of
Management and Budget (OMB) has exempted these types of actions from
review under Executive Order 12866, entitled Regulatory Planning and
Review (58 FR 51735, October 4, 1993). Because this rule has been
exempted from review under Executive Order 12866 due to its lack of
significance, this rule is not subject to Executive Order 13211,
Actions Concerning Regulations That Significantly Affect Energy Supply,
Distribution, or Use (66 FR 28355, May 22, 2001). 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., or impose
any enforceable duty or contain any unfunded mandate as described under
Title II of the Unfunded Mandates Reform Act of 1995 (UMRA) (Public Law
104-4). 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); or OMB review or any Agency action under Executive
Order 13045, entitled Protection of Children from Environmental Health
Risks and Safety Risks (62 FR 19885, April 23, 1997). 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). 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. In addition, the Agency has determined that this
action will not have a substantial direct effect on States, on the
relationship between the national government and the States, or on the
distribution of power and responsibilities among the various levels of
government, as specified in Executive Order 13132, entitled Federalism
(64 FR 43255, August 10, 1999). Executive Order 13132 requires EPA to
develop an accountable process to ensure ``meaningful and timely input
by State and local officials in the development of regulatory policies
that have federalism implications.'' ``Policies that have federalism
implications'' is defined in the Executive order to include regulations
that have ``substantial direct effects on the States, on the
relationship between the national government and the States, or on the
distribution of power and responsibilities among the various levels of
government.'' This final rule directly regulates growers, food
processors, food handlers, and food retailers, not States. This action
does not alter the relationships or distribution of power and
responsibilities established by Congress in the preemption provisions
of section 408(n)(4) of FFDCA. For these same reasons, the Agency has
determined that this rule does not have any ``tribal implications'' as
described in Executive Order 13175, entitled Consultation and
Coordination with Indian Tribal Governments (65 FR 67249, November 6,
2000). Executive Order 13175, requires EPA to develop an accountable
process to ensure ``meaningful and timely input by tribal officials in
the development of regulatory policies that have tribal implications.''
``Policies that have tribal implications'' is defined in the
[[Page 54917]]
Executive order to include regulations that have ``substantial direct
effects on one or more Indian tribes, on the relationship between the
Federal Government and the Indian tribes, or on the distribution of
power and responsibilities between the Federal Government and Indian
tribes.'' This rule will not have substantial direct effects on tribal
governments, on the relationship between the Federal Government and
Indian tribes, or on the distribution of power and responsibilities
between the Federal Government and Indian tribes, as specified in
Executive Order 13175. Thus, Executive Order 13175 does not apply to
this rule.
VII. Congressional Review Act
The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the
Small Business Regulatory Enforcement Fairness Act of 1996, generally
provides that before a rule may take effect, the agency promulgating
the rule must submit a rule report, which includes a copy of the rule,
to each House of the Congress and to the Comptroller General of the
United States. EPA will submit a report containing this rule and other
required information to the U.S. Senate, the U.S. House of
Representatives, and the Comptroller General of the United States prior
to publication of this final rule in the Federal Register. This final
rule is not a ``major rule'' as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection, Administrative practice and procedure,
Agricultural commodities, Pesticides and pests, Reporting and
recordkeeping requirements.
Dated: September 11, 2006.
James J. Jones,
Director, Office of Pesticide Programs.
0
Therefore, 40 CFR chapter I is amended as follows:
PART 180--[AMENDED]
0
1. The authority citation for part 180 continues to read as follows:
Authority: 21 U.S.C. 321(q), 346a and 371.
0
2. Section 180.624 is added to subpart C to read as follows:
Sec. 180.624 Metrafenone, tolerances for residues.
(a) General. Tolerances are established for residues of
metrafenone, (3-bromo-6-methoxy-2-methylphenyl)(2,3,4-trimethoxy-6-
methylphenyl)methanone, in or on the following commodities.
------------------------------------------------------------------------
Parts per
Commodity million
------------------------------------------------------------------------
Grape...................................................... 0.6\1\
------------------------------------------------------------------------
\1\ There is no U.S. registration on grapes as of September 20, 2006.
(b) Section 18 emergency exemption. [Reserved]
(c) Tolerances with regional registrations. [Reserved]
(d) Indirect or inadvertent residues. [Reserved]
[FR Doc. E6-15475 Filed 9-19-06; 8:45 am]
BILLING CODE 6560-50-S