Ipconazole; Pesticide Tolerances, 69554-69559 [E8-27310]
Download as PDF
69554
Federal Register / Vol. 73, No. 224 / Wednesday, November 19, 2008 / Rules and Regulations
Paperwork Reduction Act of 1995
This rule does not contain collection
of information requirements and would
not be subject to the Paperwork
Reduction Act of 1980, as amended (44
U.S.C. 3501–20).
List of Subjects in 28 CFR Part 0
Authority delegations (Government
agencies), Government employees,
Organization and functions
(Government agencies), Whistleblowing.
■ Accordingly, Title 28, Part 0 of the
Code of Federal Regulations is amended
as follows:
PART 0—[AMENDED]
1. The authority citation for Part 0
continues to read as follows:
■
Authority: 5 U.S.C. 301; 28 U.S.C. 509,
510, 515–519.
§ 0.114
Affairs, 810 Vermont Avenue, NW.,
Washington, DC 20420, (202) 461–9739
(This is not a toll-free number).
SUPPLEMENTARY INFORMATION: VA
published a document in the Federal
Register on September 23, 2008, at 73
FR 54693, revising the portion of the
Rating Schedule regarding traumatic
brain injury (TBI). In the Federal
Register document, a period was left off
the end of Note (4) of diagnostic code
8045 in 38 CFR 4.124a. Additionally, we
provided updates to 38 CFR part 4,
Appendices A and C to reflect the
changes to the TBI rating criteria. An
extra ‘‘4.124a’’ was erroneously added
in Appendix A, and ‘‘Traumatic Brain
Injury residuals’’ with diagnostic code
8045, was not added alphabetically.
This document corrects those errors.
List of Subjects in 38 CFR Part 4
Disability benefits, Pensions,
Veterans.
[Amended]
2. In § 0.114, paragraph (a)(3) is
amended by removing the fee ‘‘$45’’ and
adding the fee ‘‘$55’’ in its place
wherever it occurs.
■
Dated: November 12, 2008.
Michael B. Mukasey,
Attorney General.
[FR Doc. E8–27465 Filed 11–18–08; 8:45 am]
BILLING CODE 4410–04–P
Approved: October 29, 2008.
William F. Russo,
Director, Regulations Management.
For the reasons set out in the
preamble, VA is correcting 38 CFR part
4 as follows.
■
PART 4—SCHEDULE FOR RATING
DISABILITIES
1. The authority citation for part 4
continues to read as follows:
■
DEPARTMENT OF VETERANS
AFFAIRS
Authority: 38 U.S.C. 1155, unless
otherwise noted.
38 CFR Part 4
■
RIN 2900–AM75
Schedule for Rating Disabilities;
Evaluation of Residuals of Traumatic
Brain Injury (TBI); Correction
Department of Veterans Affairs.
Correcting amendment.
AGENCY:
cprice-sewell on PROD1PC64 with RULES
ACTION:
SUMMARY: This document contains a
minor correction to the final rulemaking
that the Department of Veterans Affairs
(VA) published at 73 FR 54693 on
September 23, 2008. The rulemaking
relates to a revision of the portion of
VA’s Schedule for Rating Disabilities
that addresses neurological conditions
and convulsive disorders to provide
detailed and updated criteria for
evaluating residuals of traumatic brain
injury (TBI).
DATES: Effective Date: November 19,
2008.
FOR FURTHER INFORMATION CONTACT:
Rhonda F. Ford, Chief, Regulations Staff
(211D), Compensation and Pension
Service, Veterans Benefits
Administration, Department of Veterans
VerDate Aug<31>2005
14:43 Nov 18, 2008
Jkt 217001
2. In § 4.124a, diagnostic code 8045,
Note (4), add a period at the end of the
paragraph.
■ 3. In Appendix A to Part 4, under the
‘‘Sec.’’ heading, remove from the table
the second entry ‘‘4.124a’’.
■ 4. In Appendix C to Part 4—
Alphabetical Index of Disabilities table,
remove the entry ‘‘Traumatic brain
injury residuals’’ and its diagnostic code
‘‘8045’’ and add it in alphabetical order
after the entry ‘‘Toxic nephropathy’’.
[FR Doc. E8–27457 Filed 11–18–08; 8:45 am]
BILLING CODE 8320–01–P
from seed treatment in or on cotton,
peanut, soybean, dry shelled pea and
bean (Subgroup 6C), cereal grains
(Group 15) except rice, and forage,
fodder, and straw of cereal grains
(Group 16) except rice. Chemtura
Corporation requested these tolerances
under the Federal Food, Drug, and
Cosmetic Act (FFDCA).
DATES: This regulation is effective
November 19, 2008. Objections and
requests for hearings must be received
on or before January 20, 2009, 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–2007–0226. 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:
Tawanda Maignan, Registration
Division (7505P), Office of Pesticide
Programs, Environmental Protection
Agency, 1200 Pennsylvania Ave., NW.,
Washington, DC 20460–0001; telephone
number: (703) 308–8050; e-mail address:
maignan.tawanda@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2007–0226; FRL–8389–1]
Ipconazole; Pesticide Tolerances
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
SUMMARY: This regulation establishes
tolerances for residues of ipconazole
PO 00000
Frm 00034
Fmt 4700
Sfmt 4700
A. Does this Action Apply to Me?
You may be potentially affected by
this action if you are an agricultural
producer, food manufacturer, or
pesticide manufacturer. 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).
E:\FR\FM\19NOR1.SGM
19NOR1
Federal Register / Vol. 73, No. 224 / Wednesday, November 19, 2008 / Rules and Regulations
• 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.
cprice-sewell on PROD1PC64 with RULES
B. How Can I Access Electronic Copies
of this Document?
In addition to accessing electronically
available documents at https://
www.regulations.gov, you may access
this Federal Register document
electronically through the EPA Internet
under the ‘‘Federal Register’’ listings at
https://www.epa.gov/fedrgstr. You may
also access a frequently updated
electronic version of EPA’s tolerance
regulations at 40 CFR part 180 through
the Government Printing Office’s e-CFR
site at https://www.gpoaccess.gov/ecfr.
C. Can I File an Objection or Hearing
Request?
Under section 408(g) of FFDCA, 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–2007–0226 in the subject line on
the first page of your submission. All
requests must be in writing, and must be
mailed or delivered to the Hearing Clerk
as required by 40 CFR part 178 on or
before January 20, 2009.
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 this copy,
identified by docket ID number EPA–
HQ–OPP–2007–0226, 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),
VerDate Aug<31>2005
14:43 Nov 18, 2008
Jkt 217001
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. Petition for Tolerance
In the Federal Register of May 9, 2007
(72 FR 26374) (FRL–8121–5), 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 7F7180) by
Chemtura Corporation, 199 Benson Rd.,
Middlebury, CT 06749. The petition
requested that 40 CFR part 180 be
amended by establishing permanent
tolerances for residues of the fungicide
ipconazole, (2-[(4chlorophenyl)methyl]-5-(1methylethyl)-1-(1H-1,2,4-triazole-1ylmethyl) cyclopentanol) from treatment
of seed prior to planting, in or on food
commodities cereal grains (except rice),
group 15; forage, fodder and straw of
cereal grains (except rice), group 16;
cotton; peanut; soybean; dry pea and
bean (shelled) (Subgroup 6C) at 0.01
parts per million (ppm). That notice
referenced a summary of the petition
prepared by Chemtura Corporation, the
registrant, which is available to the
public in the docket, https://
www.regulations.gov. There were no
comments received in response to the
notice of filing.
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
PO 00000
Frm 00035
Fmt 4700
Sfmt 4700
69555
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 the petitioned-for
tolerances for residues of ipconazole.
EPA’s assessment of exposures and risks
associated with establishing tolerances
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. Ipconazole has
low acute toxicity via the oral, dermal,
and inhalation routes of exposure. It
causes low to mild irritation to the eyes
and skin; it is not a dermal sensitizer.
Ipconazole may cause local, portal-ofentry irritation via all routes following
repeated exposure. Systemic effects that
were noted in dogs, mice, rabbits and/
or rats following exposure to ipconazole
were generally limited to decreased
body weight, body weight gain, and
food consumption; and liver and kidney
effects. Developmental effects were
observed only at the maternally-toxic
dose. Ipconazole is classified as not
likely to be a human carcinogen and
there is no concern for mutagenicity.
Specific information on the studies
received and the nature of the adverse
effects caused by ipconazole as well as
the no-observed-adverse-effect-level
(NOAEL) and the lowest-observedadverse-effect-level (LOAEL) from the
toxicity studies can be found at https://
www.regulations.gov in document
Ipconazole. Human Health Risk
Assessment for the Requested Seed
Treatment Uses on Cotton, Peanut,
Soybean, Dry Shelled Pea and Bean
(Subgroup 6C), Cereal Grains (Groups
15 and 16) Except Rice, page number 16
in docket ID number EPA–HQ–OPP–
2007–0226.
B. Toxicological Endpoints
For hazards that have a threshold
below which there is no appreciable
risk, a toxicological point of departure
E:\FR\FM\19NOR1.SGM
19NOR1
69556
Federal Register / Vol. 73, No. 224 / Wednesday, November 19, 2008 / Rules and Regulations
(POD) is identified as the basis for
derivation of reference values for risk
assessment. The POD may be defined as
the highest dose at which no adverse
effects are observed (the NOAEL) in the
toxicology study identified as
appropriate for use in risk assessment.
However, if a NOAEL cannot be
determined, the lowest dose at which
adverse effects of concern are identified
(the LOAEL) or a Benchmark Dose
(BMD) approach is sometimes used for
risk assessment. Uncertainty/safety
factors (UFs) are used in conjunction
with the POD to take into account
uncertainties inherent in the
extrapolation from laboratory animal
data to humans and in the variations in
sensitivity among members of the
human population as well as other
unknowns. Safety is assessed for acute
and chronic dietary risks by comparing
aggregate food and water exposure to
the pesticide to the acute population
adjusted dose (aPAD) and chronic
population adjusted dose (cPAD). The
aPAD and cPAD are calculated by
dividing the POD by all applicable UFs.
Aggregate short-, intermediate-, and
chronic-term risks are evaluated by
comparing food, water, and residential
exposure to the POD to ensure that the
margin of exposure (MOE) called for by
the product of all applicable UFs is not
exceeded. This latter value is referred to
as the Level of Concern (LOC).
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 greater than that 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 ipconazole used for
human risk assessment is shown in
Table 1 of this unit.
TABLE 1.—SUMMARY OF TOXICOLOGICAL DOSES AND ENDPOINTS FOR IPCONAZOLE FOR USE IN HUMAN RISK
ASSESSMENT
Point of Departure and
Uncertainty/Safety
Factors
Exposure/Scenario
Acute dietary (General Population
Including Infants and Children)
Acute dietary (Females
years of age)
13–50
RfD, PAD, LOC for Risk
Assessment
Study and Toxicological Effects
No appropriate endpoint attributable to a single dose of ipconazole was identified for this population.
NOAEL = 10 mg/kg/day
UFA = 10x
UFH = 10x
FQPA SF = 1x
Acute RfD = 0.1 mg/kg/
day
aPAD = 0.1 mg/kg/day
Developmental Toxicity Studies in Rats and Rabbits
LOAELrats = 30 mg/kg/day, based on increased
visceral and skeletal variations
LOAELrabbits = 50 mg/kg/day, based on increased
incidence of skeletal variations and malformations
Chronic dietary (All populations)
NOAEL = 1.5 mg/kg/day
UFA = 10x
UFH = 10x
FQPA SF = 1x
Chronic RfD = 0.015 mg/
kg/day
cPAD = 0.015 mg/kg/day
Chronic Toxicity Study in Dogs
LOAEL = 5 mg/kg/day, based on skin reddening
(both sexes) and decreased body weight gain in
females
Dermal Short-Term (1 to 30 days)
And Intermediate-Term (1 to 6
months)
NOAEL = 150 mg/kg/day
UFA = 10x
UFH = 10x
LOC for MOE = 100
28–Day Dermal Toxicity Study in Rats
LOAEL = 1,000 mg/kg/day, based on decreased
body weight, body weight gain, and food consumption, as well as, increased incidences of
dermal irritation
Inhalation Short-Term (1 to 30
days) And Intermediate-Term (1
to 6 months)
NOAEL = 26.1 mg/kg/
day
UFA = 10x
UFH = 10x
LOC for MOE = 100
28–Day Inhalation Toxicity Study in Rats
LOAEL = 78.3 mg/kg/day, based on decreased
body weight, body weight gain, and food consumption in males; clinical findings, such as alopecia, in males and/or females; meta/
hyperplasia and inflammatory cells in the respiration tract in males and/or females; and increased leukocytes in females
Cancer (Oral, dermal, inhalation)
Classification: Not likely to be a human carcinogen, based on two adequate rodent carcinogenicity studies.
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 = FQPA Safety Factor. PAD = population adjusted dose (a = acute, c = chronic). RfD = reference dose. MOE = margin of exposure. LOC = level of concern. N/A = Not Applicable.
cprice-sewell on PROD1PC64 with RULES
C. Exposure Assessment
1. Dietary exposure from food and
feed uses. In evaluating dietary
exposure to ipconazole, EPA considered
exposure under the petitioned-for
tolerances. EPA assessed dietary
VerDate Aug<31>2005
14:43 Nov 18, 2008
Jkt 217001
exposures from ipconazole in food as
follows:
i. Acute and chronic exposure. In
conducting the acute and chronic
dietary exposure assessments EPA used
the food consumption data from the
USDA 1994–1996 and 1998 CSFII. As to
residue levels in food, EPA acute and
PO 00000
Frm 00036
Fmt 4700
Sfmt 4700
chronic assessments used tolerancelevel residues, assumed 100% crop
treated, and incorporated modelderived, conservative estimates of
ipconazole residues in drinking water.
ii. Cancer. Ipconazole has been
classified as not likely to be
carcinogenic based on carcinogenicity
E:\FR\FM\19NOR1.SGM
19NOR1
cprice-sewell on PROD1PC64 with RULES
Federal Register / Vol. 73, No. 224 / Wednesday, November 19, 2008 / Rules and Regulations
studies in the rat and mouse which
showed no evidence of an increase in
the incidence of tumors. Therefore a
cancer dietary exposure assessment is
not needed to assess cancer risk.
iii. Anticipated residue and/or
percent crop treated (PCT) information.
EPA did not use anticipated residue
and/or PCT information in the dietary
assessment for ipconazole. Tolerance
level residues and/or 100 PCT were
assumed for all food commodities.
2. Dietary exposure from drinking
water. The Agency used screening level
water exposure models in the dietary
exposure analysis and risk assessment
for ipconazole in drinking water. These
simulation models take into account
data on the physical, chemical, and fate/
transport characteristics of ipconazole.
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.
Ipconazole is persistent and immobile
in terrestrial and aquatic environments.
Data are not available to estimate the
leaching potential of ipconazole from
treated seeds. Because ipconazole is
persistent in soil, there is a potential for
it to accumulate in soil on sites with use
over consecutive years. Steady-state
ipconazole concentrations in soil are
predicted to plateau at 0.7 lbs a.i./A
after 20 years of consecutive use.
Based on the First Index Reservoir
Screening Tool (FIRST) and Screening
Concentration in Ground Water (SCIGROW) models, the estimated drinking
water concentrations (EDWCs) of
ipconazole from newly proposed seed
uses on cotton, peanuts, soybean, cereal
grains (except rice), and pea and bean
(dry shelled) would not exceed the
drinking water concentrations
previously assessed for the seed
treatment for potatoes. Potatoes are
expected to yield the highest
concentration of ipconazole due to the
high seeding rates. Therefore, the
Agency incorporated the drinking water
concentrations from potatoes directly
into the dietary analysis.
For acute dietary risk assessment, the
surface water concentration value of
4.589 part per billion (ppb) was used to
assess the contribution to drinking
water.
For chronic (non-cancer) dietary risk
assessment, the surface water
concentration value of 1.840 ppb was
used to assess the contribution of
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,
VerDate Aug<31>2005
14:43 Nov 18, 2008
Jkt 217001
indoor pest control, termiticides, and
flea and tick control on pets).
Ipconazole 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.’’
Ipconazole is a member of the
triazole-containing class of pesticides,
often referred to as the conazoles.
Although conazoles act similarly in
plants (fungi) by inhibiting ergosterol
biosynthesis, there is not necessarily a
relationship between their pesticidal
activity and their mechanism of toxicity
in mammals. Structural similarities do
not constitute a common mechanism of
toxicity. Evidence is needed to establish
that the chemicals operate by the same,
or essentially the same, sequence of
major biochemical events. In conazoles,
however, a variable pattern of
toxicological responses is found. Some
are hepatotoxic and hepatocarcinogenic
in mice. Some induce thyroid tumors in
rats. Some induce developmental,
reproductive, and neurological effects in
rodents. Furthermore, the conazoles
produce a diverse range of biochemical
events including altered cholesterol
levels, stress responses, and altered
DNA methylation. It is not clearly
understood whether these biochemical
events are directly connected to their
toxicological outcomes. Thus, there is
currently no evidence to indicate that
conazoles share common mechanisms of
toxicity and EPA is not following a
cumulative risk approach based on a
common mechanism of toxicity for the
conazoles. For information regarding
EPA’s procedures for cumulating effects
from substances found to have a
common mechanism of toxicity, see
EPA’s website at https://www.epa.gov/
pesticides/cumulative.
Triazole-derived pesticides can form
the common metabolite 1,2,4-triazole
and two triazole conjugates (triazole
alanine and triazole acetic acid). To
support existing tolerances and to
establish new tolerances for triazolederivative pesticides, including
ipconazole, EPA conducted a human
health risk assessment for exposure to
1,2,4-triazole, triazole alanine, and
triazole acetic acid resulting from the
use of all current and pending uses of
any triazole-derived fungicide as of
September 1, 2005. The risk assessment
PO 00000
Frm 00037
Fmt 4700
Sfmt 4700
69557
is a highly conservative, screening-level
evaluation in terms of hazards
associated with common metabolites
(e.g., use of a maximum combination of
uncertainty factors) and potential
dietary and non-dietary exposures (i.e.,
high end estimates of both dietary and
non-dietary exposures). In addition, the
Agency retained the additional 10X
FQPA safety factor for the protection of
infants and children. The assessment
includes evaluations of risks for various
subgroups, including those comprised
of infants and children. The Agency’s
September 1, 2005 risk assessment can
be found in the propiconazole
reregistration docket at https://
www.regulations.gov (Docket ID EPA–
HQ–OPP–2005–0497). An addendum to
the risk assessment, Dietary Exposure
Assessments for the Common Triazole
Metabolites 1,2,4-triazole,
Triazolylalanine, Triazolylacetic Acid
and Triazolylypyruvic Acid; Updated to
Include New Uses of Fenbuconazole,
Ipconazole, Metconazole, Tebuconazole,
and Uniconazole; and a Change in
Plant-back Restriction for Tetraconazole
can be found at https://
www.regulations.gov in docket ID EPA–
HQ–OPP–2007–0226.
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.
Offspring effects only occurred in the
presence of maternal toxicity; offspring
effects were not considered more severe
than the parental effects. Therefore,
HED concluded that there is no
quantitative or qualitative evidence of
increased susceptibility to rat or rabbit
fetuses exposed in utero and/or postnatally to ipconazole.
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:
E:\FR\FM\19NOR1.SGM
19NOR1
69558
Federal Register / Vol. 73, No. 224 / Wednesday, November 19, 2008 / Rules and Regulations
i. The toxicity database for ipconazole
is adequate for the purposes of this risk
assessment.
ii. There is no indication that
ipconazole 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
ipconazole 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.
EPA made conservative (protective)
assumptions in the ground and surface
water modeling used to assess exposure
to ipconazole in drinking water. EPA
used similarly conservative assumptions
to assess post-application exposure of
children as well as incidental oral
exposure of toddlers. These assessments
will not underestimate the exposure and
risks posed by ipconazole.
cprice-sewell on PROD1PC64 with RULES
E. Aggregate Risks and Determination of
Safety
EPA determines whether acute and
chronic pesticide exposures are safe by
comparing aggregate exposure estimates
to the aPAD and cPAD. The aPAD and
cPAD represent the highest safe
exposures, taking into account all
appropriate SFs. EPA calculates the
aPAD and cPAD by dividing the POD by
all applicable UFs. For linear cancer
risks, EPA calculates the probability of
additional cancer cases 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 POD to
ensure that the MOE called for by the
product of all applicable UFs is not
exceeded.
1. Acute risk. An acute aggregate risk
assessment takes into account exposure
estimates from acute dietary
consumption of food and drinking
water. Using the exposure assumptions
described in this unit for acute
exposure, EPA has concluded that acute
exposure to ipconazole from food and
water will utilize <1% of the aPAD for
the population group females 13–49
years old, the only population subgroup
appropriate for inclusion in an acute
dietary exposure assessment.
2. Chronic risk. Using the exposure
assumptions described in this unit for
chronic exposure, EPA has concluded
that chronic exposure to ipconazole
from food and water will utilize 1.2% of
the cPAD for all infants (the population
group receiving the greatest exposure).
VerDate Aug<31>2005
14:43 Nov 18, 2008
Jkt 217001
3. Short-term and intermediate-term
risk. Short-term and intermediate-term
aggregate exposure takes into account
short-term and intermediate-term
residential exposure plus chronic
exposure to food and water (considered
to be a background exposure level).
Ipconazole is not registered for any
use patterns that would result in shortterm and intermediate-term residential
exposure. Therefore, the short-term and
intermediate-term aggregate risk,
individually is the sum of the risk from
exposure to ipconazole through food
and water, which has already been
addressed, and will not be greater than
the chronic aggregate risk.
4. Aggregate cancer risk for U.S.
population. Ipconazole has been
classified as not likely to be
carcinogenic, and 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 ipconazole
residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate liquid chromatography/
mass spectrometry/mass spectrometry
(LC/MS/MS) enforcement methodology
(AC/3020) 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
No Codex MRLs have been
established for ipconazole. No Canadian
or Mexican MRLs have been
established.
C. Revisions to Petitioned-For
Tolerances
The proposed tolerance for crop
subgroup 6C has been modified to
reflect the correct commodity definition:
‘‘Pea and bean, dried shelled, except
soybean, subgroup 6C.’’
V. Conclusion
Therefore, tolerances are established
for residues of ipconazole, (2-[(4chlorophenyl)methyl]-5-(1methylethyl)-1-(1H-1,2,4-triazole-1ylmethyl) cyclopentanol) from treatment
of seed prior to planting, in or on cotton,
peanut, soybean, pea and bean, dried
shelled, except soybean (Subgroup 6C),
cereal grains (Group 15) except rice, and
PO 00000
Frm 00038
Fmt 4700
Sfmt 4700
forage, fodder, and straw of cereal grains
(Group 16) except rice at 0.01 ppm.
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
E:\FR\FM\19NOR1.SGM
19NOR1
Federal Register / Vol. 73, No. 224 / Wednesday, November 19, 2008 / Rules and Regulations
duty or contain any unfunded mandate
as described under Title II of the
Unfunded Mandates Reform Act of 1995
(UMRA) (Public Law 104–4).
This action does not involve any
technical standards that would require
Agency consideration of voluntary
consensus standards pursuant to section
12(d) of the National Technology
Transfer and Advancement Act of 1995
(NTTAA), Public Law 104–113, section
12(d) (15 U.S.C. 272 note).
VII. Congressional Review Act
The Congressional Review Act, 5
U.S.C. 801 et seq., generally provides
that before a rule may take effect, the
agency promulgating the rule must
submit a rule report to each House of
the Congress and to the Comptroller
General of the United States. EPA will
submit a report containing this rule and
other required information to the U.S.
Senate, the U.S. House of
Representatives, and the Comptroller
General of the United States prior to
publication of this final rule in the
Federal Register. This final rule is not
a ‘‘major rule’’ as defined by 5 U.S.C.
804(2).
List of Subjects in 40 CFR Part 180
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
Dated: November 5, 2008.
Debra Edwards,
Director, Office of Pesticide Programs.
PART 180—[AMENDED]
1. The authority citation for part 180
continues to read as follows:
■
Authority: 21 U.S.C. 321(q), 346a and 371.
2. Section 180.646 is added to subpart
C to read as follows:
■
§ 180.646 Ipconazole; tolerances for
residues.
(a) General. Tolerances are
established for residues of ipconazole,
(2-[(4-chlorophenyl)methyl]-5-(1methylethyl)-1-(1H-1,2,4-triazole-1ylmethyl) cyclopentanol) from seed
treatment in or on the following
commodities:
Therefore, 40 CFR Chapter I is
amended as follows:
■
Commodity
Parts per million
Cotton, gin byproducts .............................................................................................
Cotton, undelinted seed ...........................................................................................
Grain, cereal, forage, fodder and straw, group 16, except rice ..............................
Grain, cereal group 15, except rice .........................................................................
Pea and bean, dried shelled, except soybean, subgroup 6C .................................
Peanut ......................................................................................................................
Soybean, forage ......................................................................................................
Soybean, seed .........................................................................................................
(b) Section 18 emergency exemptions.
[Reserved]
(c) Tolerances with regional
registrations. [Reserved]
(d) Indirect or inadvertent residues.
[Reserved]
[FR Doc. E8–27310 Filed 11–18–08; 8:45 am]
BILLING CODE 6560–50–S
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2008–0417; FRL–8389–5]
Polyoxin D Zinc Salt; Exemption from
the Requirement of a Tolerance
Environmental Protection
Agency (EPA).
ACTION: Final rule.
cprice-sewell on PROD1PC64 with RULES
AGENCY:
SUMMARY: This regulation establishes an
exemption from the requirement of a
tolerance for residues of the polyoxin D
zinc salt (zinc 5-[[2-amino-5-o(aminocarbonyl)-2-deoxy-Lxylonoyl]amino]-1-(5-carboxy-3,4dihydro-2,4-dioxo-1(2H)-pyrimidinyl)1,5-dideoxy-b-D-allofuranuronatein) on
almonds, cucurbit vegetables, fruiting
vegetables, ginseng, grapes, pistachios,
pome fruits, potatoes and strawberries
when applied/used as a biochemical
VerDate Aug<31>2005
14:43 Nov 18, 2008
Jkt 217001
69559
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
pesticide to control and suppress fungal
diseases. Arysta LifeScience North
America Corporation submitted a
petition to EPA under the Federal Food,
Drug, and Cosmetic Act (FFDCA),
requesting an exemption from the
requirement of a tolerance. This
regulation eliminates the need to
establish a maximum permissible level
for residues of polyoxin D zinc salt (zinc
5-[[2-amino-5-o-(aminocarbonyl)-2deoxy-L-xylonoyl]amino]-1-(5-carboxy3,4-dihydro-2,4-dioxo-1(2H)pyrimidinyl)-1,5-dideoxy-b-Dallofuranuronatein).
DATES: This regulation is effective
November 19, 2008. Objections and
requests for hearings must be received
on or before January 20, 2009, 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–2008––0417. 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.
PO 00000
Frm 00039
Fmt 4700
Sfmt 4700
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:
Chris Pfeifer, Biopesticides and
Pollution Prevention Division (7511P),
Office of Pesticide Programs,
Environmental Protection Agency, 1200
Pennsylvania Ave., NW., Washington,
DC 20460–0001; telephone number:
(703) 308–0031; e-mail address:
pfeifer.chris@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
E:\FR\FM\19NOR1.SGM
19NOR1
Agencies
[Federal Register Volume 73, Number 224 (Wednesday, November 19, 2008)]
[Rules and Regulations]
[Pages 69554-69559]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-27310]
=======================================================================
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2007-0226; FRL-8389-1]
Ipconazole; Pesticide Tolerances
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes tolerances for residues of
ipconazole from seed treatment in or on cotton, peanut, soybean, dry
shelled pea and bean (Subgroup 6C), cereal grains (Group 15) except
rice, and forage, fodder, and straw of cereal grains (Group 16) except
rice. Chemtura Corporation requested these tolerances under the Federal
Food, Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective November 19, 2008. Objections and
requests for hearings must be received on or before January 20, 2009,
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-2007-0226. 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: Tawanda Maignan, Registration Division
(7505P), Office of Pesticide Programs, Environmental Protection Agency,
1200 Pennsylvania Ave., NW., Washington, DC 20460-0001; telephone
number: (703) 308-8050; e-mail address: maignan.tawanda@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).
[[Page 69555]]
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 Access Electronic Copies of this Document?
In addition to accessing electronically available documents at
https://www.regulations.gov, you may access this Federal Register
document electronically through the EPA Internet under the ``Federal
Register'' listings at https://www.epa.gov/fedrgstr. You may also access
a frequently updated electronic version of EPA's tolerance regulations
at 40 CFR part 180 through the Government Printing Office's e-CFR site
at https://www.gpoaccess.gov/ecfr.
C. Can I File an Objection or Hearing Request?
Under section 408(g) of FFDCA, 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-2007-0226 in the subject line on the first
page of your submission. All requests must be in writing, and must be
mailed or delivered to the Hearing Clerk as required by 40 CFR part 178
on or before January 20, 2009.
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 this copy, identified by docket ID number
EPA-HQ-OPP-2007-0226, 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. Petition for Tolerance
In the Federal Register of May 9, 2007 (72 FR 26374) (FRL-8121-5),
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 7F7180)
by Chemtura Corporation, 199 Benson Rd., Middlebury, CT 06749. The
petition requested that 40 CFR part 180 be amended by establishing
permanent tolerances for residues of the fungicide ipconazole, (2-[(4-
chlorophenyl)methyl]-5-(1-methylethyl)-1-(1H-1,2,4-triazole-1-ylmethyl)
cyclopentanol) from treatment of seed prior to planting, in or on food
commodities cereal grains (except rice), group 15; forage, fodder and
straw of cereal grains (except rice), group 16; cotton; peanut;
soybean; dry pea and bean (shelled) (Subgroup 6C) at 0.01 parts per
million (ppm). That notice referenced a summary of the petition
prepared by Chemtura Corporation, the registrant, which is available to
the public in the docket, https://www.regulations.gov. There were no
comments received in response to the notice of filing.
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 the petitioned-for
tolerances for residues of ipconazole. EPA's assessment of exposures
and risks associated with establishing tolerances 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. Ipconazole has low acute toxicity via the oral, dermal, and
inhalation routes of exposure. It causes low to mild irritation to the
eyes and skin; it is not a dermal sensitizer. Ipconazole may cause
local, portal-of-entry irritation via all routes following repeated
exposure. Systemic effects that were noted in dogs, mice, rabbits and/
or rats following exposure to ipconazole were generally limited to
decreased body weight, body weight gain, and food consumption; and
liver and kidney effects. Developmental effects were observed only at
the maternally-toxic dose. Ipconazole is classified as not likely to be
a human carcinogen and there is no concern for mutagenicity. Specific
information on the studies received and the nature of the adverse
effects caused by ipconazole as well as the no-observed-adverse-effect-
level (NOAEL) and the lowest-observed-adverse-effect-level (LOAEL) from
the toxicity studies can be found at https://www.regulations.gov in
document Ipconazole. Human Health Risk Assessment for the Requested
Seed Treatment Uses on Cotton, Peanut, Soybean, Dry Shelled Pea and
Bean (Subgroup 6C), Cereal Grains (Groups 15 and 16) Except Rice, page
number 16 in docket ID number EPA-HQ-OPP-2007-0226.
B. Toxicological Endpoints
For hazards that have a threshold below which there is no
appreciable risk, a toxicological point of departure
[[Page 69556]]
(POD) is identified as the basis for derivation of reference values for
risk assessment. The POD may be defined as the highest dose at which no
adverse effects are observed (the NOAEL) in the toxicology study
identified as appropriate for use in risk assessment. However, if a
NOAEL cannot be determined, the lowest dose at which adverse effects of
concern are identified (the LOAEL) or a Benchmark Dose (BMD) approach
is sometimes used for risk assessment. Uncertainty/safety factors (UFs)
are used in conjunction with the POD to take into account uncertainties
inherent in the extrapolation from laboratory animal data to humans and
in the variations in sensitivity among members of the human population
as well as other unknowns. Safety is assessed for acute and chronic
dietary risks by comparing aggregate food and water exposure to the
pesticide to the acute population adjusted dose (aPAD) and chronic
population adjusted dose (cPAD). The aPAD and cPAD are calculated by
dividing the POD by all applicable UFs. Aggregate short-, intermediate-
, and chronic-term risks are evaluated by comparing food, water, and
residential exposure to the POD to ensure that the margin of exposure
(MOE) called for by the product of all applicable UFs is not exceeded.
This latter value is referred to as the Level of Concern (LOC).
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
greater than that 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 ipconazole used for
human risk assessment is shown in Table 1 of this unit.
Table 1.--Summary of Toxicological Doses and Endpoints for Ipconazole for Use in Human Risk Assessment
----------------------------------------------------------------------------------------------------------------
Point of Departure and
Exposure/Scenario Uncertainty/Safety RfD, PAD, LOC for Risk Study and Toxicological
Factors Assessment Effects
----------------------------------------------------------------------------------------------------------------
Acute dietary (General Population No appropriate endpoint attributable to a single dose of ipconazole was
Including Infants and Children) identified for this population.
--------------------------------------
Acute dietary (Females 13-50 years of NOAEL = 10 mg/kg/day Acute RfD = 0.1 mg/kg/ Developmental Toxicity
age) UFA = 10x.............. day Studies in Rats and
UFH = 10x.............. aPAD = 0.1 mg/kg/day... Rabbits
FQPA SF = 1x........... LOAELrats = 30 mg/kg/
day, based on
increased visceral and
skeletal variations
LOAELrabbits = 50 mg/kg/
day, based on
increased incidence of
skeletal variations
and malformations
--------------------------------------
Chronic dietary (All populations) NOAEL = 1.5 mg/kg/day Chronic RfD = 0.015 mg/ Chronic Toxicity Study
UFA = 10x.............. kg/day in Dogs
UFH = 10x.............. cPAD = 0.015 mg/kg/day. LOAEL = 5 mg/kg/day,
FQPA SF = 1x........... based on skin
reddening (both sexes)
and decreased body
weight gain in females
--------------------------------------
Dermal Short-Term (1 to 30 days) And NOAEL = 150 mg/kg/day LOC for MOE = 100 28-Day Dermal Toxicity
Intermediate-Term (1 to 6 months) UFA = 10x.............. Study in Rats
UFH = 10x.............. LOAEL = 1,000 mg/kg/
day, based on
decreased body weight,
body weight gain, and
food consumption, as
well as, increased
incidences of dermal
irritation
--------------------------------------
Inhalation Short-Term (1 to 30 days) NOAEL = 26.1 mg/kg/day LOC for MOE = 100 28-Day Inhalation
And Intermediate-Term (1 to 6 UFA = 10x.............. Toxicity Study in Rats
months) UFH = 10x.............. LOAEL = 78.3 mg/kg/day,
based on decreased
body weight, body
weight gain, and food
consumption in males;
clinical findings,
such as alopecia, in
males and/or females;
meta/hyperplasia and
inflammatory cells in
the respiration tract
in males and/or
females; and increased
leukocytes in females
--------------------------------------
Cancer (Oral, dermal, inhalation) Classification: Not likely to be a human carcinogen, based on two
adequate rodent carcinogenicity studies.
----------------------------------------------------------------------------------------------------------------
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 = FQPA Safety Factor. PAD = population adjusted dose (a = acute, c = chronic). RfD = reference dose. MOE =
margin of exposure. LOC = level of concern. N/A = Not Applicable.
C. Exposure Assessment
1. Dietary exposure from food and feed uses. In evaluating dietary
exposure to ipconazole, EPA considered exposure under the petitioned-
for tolerances. EPA assessed dietary exposures from ipconazole in food
as follows:
i. Acute and chronic exposure. In conducting the acute and chronic
dietary exposure assessments EPA used the food consumption data from
the USDA 1994-1996 and 1998 CSFII. As to residue levels in food, EPA
acute and chronic assessments used tolerance-level residues, assumed
100% crop treated, and incorporated model-derived, conservative
estimates of ipconazole residues in drinking water.
ii. Cancer. Ipconazole has been classified as not likely to be
carcinogenic based on carcinogenicity
[[Page 69557]]
studies in the rat and mouse which showed no evidence of an increase in
the incidence of tumors. Therefore a cancer dietary exposure assessment
is not needed to assess cancer risk.
iii. Anticipated residue and/or percent crop treated (PCT)
information. EPA did not use anticipated residue and/or PCT information
in the dietary assessment for ipconazole. Tolerance level residues and/
or 100 PCT were assumed for all food commodities.
2. Dietary exposure from drinking water. The Agency used screening
level water exposure models in the dietary exposure analysis and risk
assessment for ipconazole in drinking water. These simulation models
take into account data on the physical, chemical, and fate/transport
characteristics of ipconazole. 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.
Ipconazole is persistent and immobile in terrestrial and aquatic
environments. Data are not available to estimate the leaching potential
of ipconazole from treated seeds. Because ipconazole is persistent in
soil, there is a potential for it to accumulate in soil on sites with
use over consecutive years. Steady-state ipconazole concentrations in
soil are predicted to plateau at 0.7 lbs a.i./A after 20 years of
consecutive use.
Based on the First Index Reservoir Screening Tool (FIRST) and
Screening Concentration in Ground Water (SCI-GROW) models, the
estimated drinking water concentrations (EDWCs) of ipconazole from
newly proposed seed uses on cotton, peanuts, soybean, cereal grains
(except rice), and pea and bean (dry shelled) would not exceed the
drinking water concentrations previously assessed for the seed
treatment for potatoes. Potatoes are expected to yield the highest
concentration of ipconazole due to the high seeding rates. Therefore,
the Agency incorporated the drinking water concentrations from potatoes
directly into the dietary analysis.
For acute dietary risk assessment, the surface water concentration
value of 4.589 part per billion (ppb) was used to assess the
contribution to drinking water.
For chronic (non-cancer) dietary risk assessment, the surface water
concentration value of 1.840 ppb was used to assess the contribution of
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).
Ipconazole 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.''
Ipconazole is a member of the triazole-containing class of
pesticides, often referred to as the conazoles. Although conazoles act
similarly in plants (fungi) by inhibiting ergosterol biosynthesis,
there is not necessarily a relationship between their pesticidal
activity and their mechanism of toxicity in mammals. Structural
similarities do not constitute a common mechanism of toxicity. Evidence
is needed to establish that the chemicals operate by the same, or
essentially the same, sequence of major biochemical events. In
conazoles, however, a variable pattern of toxicological responses is
found. Some are hepatotoxic and hepatocarcinogenic in mice. Some induce
thyroid tumors in rats. Some induce developmental, reproductive, and
neurological effects in rodents. Furthermore, the conazoles produce a
diverse range of biochemical events including altered cholesterol
levels, stress responses, and altered DNA methylation. It is not
clearly understood whether these biochemical events are directly
connected to their toxicological outcomes. Thus, there is currently no
evidence to indicate that conazoles share common mechanisms of toxicity
and EPA is not following a cumulative risk approach based on a common
mechanism of toxicity for the conazoles. For information regarding
EPA's procedures for cumulating effects from substances found to have a
common mechanism of toxicity, see EPA's website at https://www.epa.gov/
pesticides/cumulative.
Triazole-derived pesticides can form the common metabolite 1,2,4-
triazole and two triazole conjugates (triazole alanine and triazole
acetic acid). To support existing tolerances and to establish new
tolerances for triazole-derivative pesticides, including ipconazole,
EPA conducted a human health risk assessment for exposure to 1,2,4-
triazole, triazole alanine, and triazole acetic acid resulting from the
use of all current and pending uses of any triazole-derived fungicide
as of September 1, 2005. The risk assessment is a highly conservative,
screening-level evaluation in terms of hazards associated with common
metabolites (e.g., use of a maximum combination of uncertainty factors)
and potential dietary and non-dietary exposures (i.e., high end
estimates of both dietary and non-dietary exposures). In addition, the
Agency retained the additional 10X FQPA safety factor for the
protection of infants and children. The assessment includes evaluations
of risks for various subgroups, including those comprised of infants
and children. The Agency's September 1, 2005 risk assessment can be
found in the propiconazole reregistration docket at https://
www.regulations.gov (Docket ID EPA-HQ-OPP-2005-0497). An addendum to
the risk assessment, Dietary Exposure Assessments for the Common
Triazole Metabolites 1,2,4-triazole, Triazolylalanine, Triazolylacetic
Acid and Triazolylypyruvic Acid; Updated to Include New Uses of
Fenbuconazole, Ipconazole, Metconazole, Tebuconazole, and Uniconazole;
and a Change in Plant-back Restriction for Tetraconazole can be found
at https://www.regulations.gov in docket ID EPA-HQ-OPP-2007-0226.
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. Offspring effects only
occurred in the presence of maternal toxicity; offspring effects were
not considered more severe than the parental effects. Therefore, HED
concluded that there is no quantitative or qualitative evidence of
increased susceptibility to rat or rabbit fetuses exposed in utero and/
or post-natally to ipconazole.
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:
[[Page 69558]]
i. The toxicity database for ipconazole is adequate for the
purposes of this risk assessment.
ii. There is no indication that ipconazole 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 ipconazole 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. EPA made conservative (protective) assumptions in the ground
and surface water modeling used to assess exposure to ipconazole in
drinking water. EPA used similarly conservative assumptions to assess
post-application exposure of children as well as incidental oral
exposure of toddlers. These assessments will not underestimate the
exposure and risks posed by ipconazole.
E. Aggregate Risks and Determination of Safety
EPA determines whether acute and chronic pesticide exposures are
safe by comparing aggregate exposure estimates to the aPAD and cPAD.
The aPAD and cPAD represent the highest safe exposures, taking into
account all appropriate SFs. EPA calculates the aPAD and cPAD by
dividing the POD by all applicable UFs. For linear cancer risks, EPA
calculates the probability of additional cancer cases 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 POD to ensure that the MOE called for
by the product of all applicable UFs is not exceeded.
1. Acute risk. An acute aggregate risk assessment takes into
account exposure estimates from acute dietary consumption of food and
drinking water. Using the exposure assumptions described in this unit
for acute exposure, EPA has concluded that acute exposure to ipconazole
from food and water will utilize <1% of the aPAD for the population
group females 13-49 years old, the only population subgroup appropriate
for inclusion in an acute dietary exposure assessment.
2. Chronic risk. Using the exposure assumptions described in this
unit for chronic exposure, EPA has concluded that chronic exposure to
ipconazole from food and water will utilize 1.2% of the cPAD for all
infants (the population group receiving the greatest exposure).
3. Short-term and intermediate-term risk. Short-term and
intermediate-term aggregate exposure takes into account short-term and
intermediate-term residential exposure plus chronic exposure to food
and water (considered to be a background exposure level).
Ipconazole is not registered for any use patterns that would result
in short-term and intermediate-term residential exposure. Therefore,
the short-term and intermediate-term aggregate risk, individually is
the sum of the risk from exposure to ipconazole through food and water,
which has already been addressed, and will not be greater than the
chronic aggregate risk.
4. Aggregate cancer risk for U.S. population. Ipconazole has been
classified as not likely to be carcinogenic, and 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 ipconazole residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
Adequate liquid chromatography/mass spectrometry/mass spectrometry
(LC/MS/MS) enforcement methodology (AC/3020) 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
No Codex MRLs have been established for ipconazole. No Canadian or
Mexican MRLs have been established.
C. Revisions to Petitioned-For Tolerances
The proposed tolerance for crop subgroup 6C has been modified to
reflect the correct commodity definition: ``Pea and bean, dried
shelled, except soybean, subgroup 6C.''
V. Conclusion
Therefore, tolerances are established for residues of ipconazole,
(2-[(4-chlorophenyl)methyl]-5-(1-methylethyl)-1-(1H-1,2,4-triazole-1-
ylmethyl) cyclopentanol) from treatment of seed prior to planting, in
or on cotton, peanut, soybean, pea and bean, dried shelled, except
soybean (Subgroup 6C), cereal grains (Group 15) except rice, and
forage, fodder, and straw of cereal grains (Group 16) except rice at
0.01 ppm.
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
[[Page 69559]]
duty or contain any unfunded mandate as described under Title II of the
Unfunded Mandates Reform Act of 1995 (UMRA) (Public Law 104-4).
This action does not involve any technical standards that would
require Agency consideration of voluntary consensus standards pursuant
to section 12(d) of the National Technology Transfer and Advancement
Act of 1995 (NTTAA), Public Law 104-113, section 12(d) (15 U.S.C. 272
note).
VII. Congressional Review Act
The Congressional Review Act, 5 U.S.C. 801 et seq., generally
provides that before a rule may take effect, the agency promulgating
the rule must submit a rule report to each House of the Congress and to
the Comptroller General of the United States. EPA will submit a report
containing this rule and other required information to the U.S. Senate,
the U.S. House of Representatives, and the Comptroller General of the
United States prior to publication of this final rule in the Federal
Register. This final rule is not a ``major rule'' as defined by 5
U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection, Administrative practice and procedure,
Agricultural commodities, Pesticides and pests, Reporting and
recordkeeping requirements.
Dated: November 5, 2008.
Debra Edwards,
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 180.646 is added to subpart C to read as follows:
Sec. 180.646 Ipconazole; tolerances for residues.
(a) General. Tolerances are established for residues of ipconazole,
(2-[(4-chlorophenyl)methyl]-5-(1-methylethyl)-1-(1H-1,2,4-triazole-1-
ylmethyl) cyclopentanol) from seed treatment in or on the following
commodities:
----------------------------------------------------------------------------------------------------------------
Commodity Parts per million
----------------------------------------------------------------------------------------------------------------
Cotton, gin byproducts................................ 0.01
Cotton, undelinted seed............................... 0.01
Grain, cereal, forage, fodder and straw, group 16, 0.01
except rice..........................................
Grain, cereal group 15, except rice................... 0.01
Pea and bean, dried shelled, except soybean, subgroup 0.01
6C...................................................
Peanut................................................ 0.01
Soybean, forage....................................... 0.01
Soybean, seed......................................... 0.01
----------------------------------------------------------------------------------------------------------------
(b) Section 18 emergency exemptions. [Reserved]
(c) Tolerances with regional registrations. [Reserved]
(d) Indirect or inadvertent residues. [Reserved]
[FR Doc. E8-27310 Filed 11-18-08; 8:45 am]
BILLING CODE 6560-50-S