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Cyazofamid; Pesticide Tolerances

PDF Version (6 pp, 132K, About PDF)

[Federal Register: April 23, 2008 (Volume 73, Number 79)]
[Rules and Regulations]
[Page 21834-21839]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr23ap08-10]

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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2007-0872; FRL-8360-4]

Cyazofamid; Pesticide Tolerances

AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.

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SUMMARY: This regulation establishes a tolerance for combined residues
of cyazofamid and its metabloite CCIM in or on carrot, roots.
Interregional Research Project Number 4 (IR-4) requested this tolerance
under the Federal Food, Drug, and Cosmetic Act (FFDCA).

DATES: This regulation is effective April 23, 2008. Objections and
requests for hearings must be received on or before June 23, 2008, 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-2007-0872. To access the
electronic docket, go to http://www.regulations.gov, select ``Advanced
Search,'' then ``Docket Search.'' Insert the docket ID number where
indicated and select the ``Submit'' button. Follow the instructions on
the regulations.gov website to view the docket index or access
available documents. All documents in the docket are listed in the
docket index available in 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 http://www.regulations.gov, or,
if only available in hard copy, at the OPP

[[Page 21835]]

Regulatory Public Docket in Rm. S-4400, One Potomac Yard (South Bldg.),
2777 S. Crystal Dr., Arlington, VA. The Docket Facility is open from
8:30 a.m. to 4 p.m., Monday through Friday, excluding legal holidays.
The Docket Facility telephone number is (703) 305-5805.

FOR FURTHER INFORMATION CONTACT: Susan Stanton, Registration Division
(7505P), Office of Pesticide Programs, Environmental Protection Agency,
1200 Pennsylvania Ave., NW., Washington, DC 20460-0001; telephone
number: (703) 305-5218; e-mail address: stanton.susan@epa.gov.

SUPPLEMENTARY INFORMATION:

I. General Information

A. Does this Action Apply to Me?

    You may be potentially affected by this action if you are an
agricultural producer, food manufacturer, or pesticide manufacturer.
Potentially affected entities may include, but are not limited to those
engaged in the following activities:
    • Crop production (NAICS code 111).
    • Animal production (NAICS code 112).
    • Food manufacturing (NAICS code 311).
    • Pesticide manufacturing (NAICS code 32532).
    This listing is not intended to be exhaustive, but rather to
provide a guide for readers regarding entities likely to be affected by
this action. Other types of entities not listed in this unit could also
be affected. The North American Industrial Classification System
(NAICS) codes have been provided to assist you and others in
determining whether this action might apply to certain entities. If you
have any questions regarding the applicability of this action to a
particular entity, consult the person listed under FOR FURTHER
INFORMATION CONTACT.

B. How Can I Access Electronic Copies of this Document?

    In addition to accessing an electronic copy of this Federal
Register document through the electronic docket at http://
www.regulations.gov, you may access this Federal Register document
electronically through the EPA Internet under the ``Federal Register''
listings at http://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 pilot e-CFR
site at http://www.gpoaccess.gov/ecfr.

C. Can I File an Objection or Hearing Request?

    Under section 408(g) of FFDCA, 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-2007-0872 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 June 23, 2008.
    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-2007-0872, by one of the following methods:
    • Federal eRulemaking Portal: http://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. Petition for Tolerance

    In the Federal Register of September 28, 2007 (72 FR 55204) (FRL-
8147-1), 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
7E7244) by Interregional Research Project Number 4 (IR-4), 500 College
Road East, Suite 201W, Princeton, NJ 08540. The petition requested that
40 CFR 180.601 be amended by establishing a tolerance for combined
residues of the fungicide cyazofamid, 4-chloro-2-cyano-N,N-dimethyl-5-
(4-methylphenyl)-1H-imidazole-1-sulfonamide, and its metabolite CCIM,
4-chloro-5-(4-methylphenyl)-1H-imidazole-2-carbonitrile, expressed as
cyazofamid, in or on carrot, roots at 0.06 parts per million (ppm).
That notice referenced a summary of the petition prepared by ISK
Biosciences Corporation, the registrant, which is available to the
public in the docket, http://www.regulations.gov. There were no
comments received in response to the notice of filing.
    Based upon review of the data supporting the petition, EPA has
modified the tolerance level for carrot roots. The reason for this
change is explained in Unit IV.C.

III. Aggregate Risk Assessment and Determination of Safety

    Section 408(b)(2)(A)(i) of FFDCA allows EPA to establish a
tolerance (the legal limit for a pesticide chemical residue in or on a
food) only if EPA determines that the tolerance is ``safe.'' Section
408(b)(2)(A)(ii) of FFDCA defines ``safe'' to mean that ``there is a
reasonable certainty that no harm will result from aggregate exposure
to the pesticide chemical residue, including all anticipated dietary
exposures and all other exposures for which there is reliable
information.'' This includes exposure through drinking water and in
residential settings, but does not include occupational exposure.
Section 408(b)(2)(C) of FFDCA requires EPA to give special
consideration to exposure of infants and children to the pesticide
chemical residue in establishing a tolerance and to ``ensure that there
is a reasonable certainty that no harm will result to infants and
children from aggregate exposure to the pesticide chemical residue.''
    Consistent with 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 combined residues of cyazofamid and its metabolite CCIM
on carrot, roots at 0.09 ppm. 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

[[Page 21836]]

concerning the variability of the sensitivities of major identifiable
subgroups of consumers, including infants and children.
    Cyazofamid has a low order of acute toxicity via the oral, dermal
and inhalation routes of exposure. Cyazofamid produces minimal but
reversible eye irritation, is a slight dermal irritant and is a weak
dermal sensitizer. In subchronic toxicity studies in rats cyazofamid
exhibited mild or low toxicity with the kidney being the primary target
organ. Kidney effects included an increased number of ``basophilic
kidney tubules'' and mild increases in urinary volume, pH, and protein.
No adverse kidney effects or any other toxicity findings were noted in
chronic toxicity studies in rats. Similarly, cyazofamid's overall
toxicity profile in dogs seems to be limited. In both the 13 week and
one year dog studies, there were no major toxicity findings up to a
dose of 1,000 milligrams/kilogram body weight/day (mg/kg/bwt day). The
only possible effect was increased cysts in parathyroids of both sexes
and the pituitary in females observed in the high dose groups of the
one year study.
    Skin lesions, which may be due to systemic allergy, were observed
in the males of the 18 month mouse carcinogenicity study. At the high
dose, approaching 1,000 mg/kg/day, male mice suffered hair loss due to
scratching, which was confirmed at necropsy by increased incidence of
body sores (head, neck, trunk, limb, and/or tail) and was correlated
histologically with an increased incidence of acanthosis (hyperplasia),
chronic active dermatitis, ulceration, and premature death. The
sulfonamide moiety in the cyanoimidazole ring might have rendered
cyazofamid an allergen, albeit a weak one. This is supported by the
findings that cyazofamid is a moderate irritant in the primary rabbit
skin test and is a positive weak sensitizer in the guinea pig skin
maximization test. There were no skin allergies in the rat feeding
study, which may be due to possible species variation.
    There were no maternal or developmental effects observed in the
prenatal developmental toxicity study in rabbits and no maternal,
reproductive or offspring effects in the 2-generation reproduction
study in rats. There was some evidence of increased susceptibility
following in utero exposure of rats in the prenatal developmental
toxicity study. At the highest dose tested (HDT) (1,000 mg/kg/day),
developmental effects (increased incidence of bent ribs) were observed
in the absence of maternal toxicity.
    There were no indications of treatment-related adverse
neurotoxicity findings including clinical signs, qualitative or
quantitative neurobehavioral effects, brain weight, or gross/
microscopic pathology in the acute neurotoxicity study and no evidence
of neurotoxicity in other available studies for cyazofamid.
    There was no evidence of carcinogenicity in the rat and mouse
carcinogenicity studies and no evidence that cyazofamid is mutagenic in
several in vivo and in vitro studies. Based on the results of these
studies, EPA has classified cyazofamid as ``not likely to be
carcinogenic to humans.''
    Specific information on the studies received and the nature of the
adverse effects caused by cyazofamid 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 http://
www.regulations.gov in document Human Health Risk Assessment to Support
the Registration of Cyazofamid for Use on Carrot at pages 10 to 17 in
docket ID number EPA-HQ-OPP-2007-0872.

B. Toxicological Endpoints

    For hazards that have a threshold below which there is no
appreciable risk, a toxicological point of departure (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 
http://www.epa.gov/pesticides/factsheets/riskassess.htm.
    A summary of the toxicological endpoints for cyazofamid used for
human risk assessment can be found at http://www.regulations.gov in
document Human Health Risk Assessment to Support the Registration of
Cyazofamid for Use on Carrot at pages 18 to 21 in docket ID number EPA-
HQ-OPP-2007-0872.

C. Exposure Assessment

    1. Dietary exposure from food and feed uses. In evaluating dietary
exposure to cyazofamid, EPA considered exposure under the petitioned-
for tolerances as well as all existing cyazofamid tolerances in 40 CFR
180.601. EPA assessed dietary exposures from cyazofamid 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. EPA identified such an
effect (increased incidence of bent ribs in the rat prenatal
developmental toxicity study) for the population subgroup, females, 13
to 50 years old; however, no such effect was identified for the general
population, including infants and children.
    In estimating acute dietary exposure, EPA used food consumption
information from the United States Department of Agriculture (USDA)
1994-1996 Nationwide Continuing Surveys of Food Intake by Individuals
(CSFII). As to residue levels in food, EPA assumed tolerance-level
residues and 100 PCT for all existing and new uses of cyazofamid.
Default processing factors were set to 1x based on the results of
processing studies indicating that residues of cyazofamid do not
concentrate in processed commodities.
    ii. Chronic exposure. In conducting the chronic dietary exposure
assessment EPA used the food consumption data from the USDA 1994-1996
and 1998 CSFII. As in the acute dietary exposure

[[Page 21837]]

assessment, EPA assumed tolerance-level residues and 100 PCT for all
existing and new uses of cyazofamid and processing factors of 1x for
all processed commodities.
    iii. Cancer. Based on the results of carcinogenicity studies in
rats and mice, EPA classified cyazofamid as ``not likely to be
carcinogenic to humans.'' Therefore, a cancer exposure assessment was
not conducted.
    iv. Anticipated residue and PCT information. EPA did not use
anticipated residue or PCT information in the dietary assessment for
cyazofamid. Tolerance-level residues and 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 cyazofamid in drinking water. These simulation models
take into account data on the physical, chemical, and fate/transport
characteristics of cyazofamid. Further information regarding EPA
drinking water models used in pesticide exposure assessment can be
found at http://www.epa.gov/oppefed1/models/water/index.htm.
    Available environmental fate studies suggest cyazofamid is not very
mobile and quickly degrades into a number of degradation products under
different environmental conditions. Among the three major degradates
for cyazofamid (CCIM, CCIM-AM, and CTCA), the two terminal ones are
CCIM and CTCA. The highest estimated drinking water concentrations
resulted from modeling which assumed application of 100% molar
conversion of the parent into the terminal degradate CTCA. EPA used
these estimates of CTCA in its dietary exposure assessments, a
conservative approach that likely overestimates the exposure
contribution from drinking water. Based on the Pesticide Root Zone
Model/Exposure Analysis Modeling System (PRZM/EXAMS) and Screening
Concentration in Ground Water (SCI-GROW) models, the estimated drinking
water concentrations (EDWCs) of CTCA for acute exposures are estimated
to be 136 parts per billion (ppb) for surface water and 2.18 ppb for
ground water; the EDWCs of CTCA for chronic exposures for non-cancer
assessments are estimated to be 133 ppb for surface water and 2.18 ppb
for ground water.
    Modeled estimates of drinking water concentrations were directly
entered into the dietary exposure model. For acute dietary risk
assessment, the water concentration value of 136 ppb was used to assess
the contribution to drinking water. For chronic dietary risk
assessment, the water concentration of value 133 ppb was used to assess
the contribution to drinking water.
    3. From non-dietary exposure. The term ``residential exposure'' is
used in this document to refer to non-occupational, non-dietary
exposure (e.g., for lawn and garden pest control, indoor pest control,
termiticides, and flea and tick control on pets).
    Cyazofamid is currently registered for the following uses that
could result in residential exposures: Disease control on
professionally managed turf areas, such as golf courses and college/
professional sports fields. EPA assessed residential exposure using the
following assumptions: Application by homeowners to residential turf is
prohibited. Therefore, non-occupational (i.e., residential) handler
exposure is not expected and was not assessed. Short and intermediate
term post-application dermal exposure is possible for recreational
golfers or players of various sports who use college/professional
athletic fields after cyazofamid has been applied. EPA assessed post-
application exposure of adult golfers as well as young golfers
(children 6-12 and children 3-5 years old). Post-application exposures
on college/professional sports fields were assessed only for adults,
since children are not expected to play on these types of athletic
fields. The post-application exposure assessment was conducted using
conservative assumptions, and the resulting exposure estimates are
considered to represent high-end exposures.
    4. Cumulative effects from substances with a common mechanism of
toxicity. Section 408(b)(2)(D)(v) of FFDCA requires that, when
considering whether to establish, modify, or revoke a tolerance, the
Agency consider ``available information'' concerning the cumulative
effects of a particular pesticide's residues and ``other substances
that have a common mechanism of toxicity.''
    EPA has not found cyazofamid to share a common mechanism of
toxicity with any other substances, and cyazofamid does not appear to
produce a toxic metabolite produced by other substances. For the
purposes of this tolerance action, therefore, EPA has assumed that
cyazofamid does not have a common mechanism of toxicity with other
substances. For information regarding EPA's efforts to determine which
chemicals have a common mechanism of toxicity and to evaluate the
cumulative effects of such chemicals, see EPA's website at 
http://www.epa.gov/pesticides/cumulative.

D. Safety Factor for Infants and Children

    1. In general. Section 408(b)(2)(c) of FFDCA provides that EPA
shall apply an additional tenfold (10X) margin of safety for infants
and children in the case of threshold effects to account for pre-natal
and post-natal 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. Pre-natal and post-natal sensitivity. The pre- and post-natal
toxicology database for cyazofamid includes rat and rabbit
developmental toxicity studies and a 2-generation reproduction toxicity
study in rats. In the prenatal developmental toxicity study in rabbits,
there were no maternal or developmental effects at any dose up to the
limit dose of 1,000 mg/kg/day. Similarly, in the 2-generation
reproduction study, the HDT (>1,000 mg/kg/day) did not cause maternal
systemic, reproductive or offspring toxicity. There was some evidence
of increased susceptibility following in utero exposure of rats in the
prenatal developmental toxicity study. At the HDT (1,000 mg/kg/day),
developmental effects (increased incidence of bent ribs) were observed
in the absence of maternal toxicity.
    EPA concluded that the concern is low for the quantitative
susceptibility seen in the rat developmental toxicity study and that
there are no residual uncertainties because:
    i. The developmental effect is well identified with clear NOAEL/LOAEL;
    ii. The developmental effect (increased bent ribs) is a reversible
variation rather than a malformation;
    iii. The developmental effect is seen only at the limit dose of
1,000 mg/kg/day;
    iv. This endpoint is used to establish the acute RfD for Females
13-49; and
    v. The overall toxicity profile indicates that cyazofamid is not a
very toxic compound.
    3. Conclusion. EPA has determined that reliable data show the safety
of infants and children would be adequately protected if the FQPA SF were
reduced to 1X. That decision is based on the following findings:
    i. The toxicity database for cyazofamid is complete.

[[Page 21838]]

    ii. There is no indication that cyazofamid 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 cyazofamid results in increased
susceptibility in in utero rabbits in the prenatal developmental study
or in young rats in the 2-generation reproduction study. Although there
is quantitative evidence of increased susceptibility in the pre-natal
developmental study in rats, the degree of concern for pre-natal
toxicity is low and the Agency did not identify any residual
uncertainties after establishing toxicity endpoints and traditional UFs
to be used in the risk assessment of cyazofamid.
    iv. There are no residual uncertainties identified in the exposure
databases. The dietary food exposure assessments were performed based
on 100 PCT and tolerance-level residues. EPA made conservative
(protective) assumptions in the ground and surface water modeling used
to assess exposure to cyazofamid in drinking water. EPA used similarly
conservative assumptions to assess post-application exposure of
children (young golfers). These assessments will not underestimate the
exposure and risks posed by cyazofamid.

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 discussed in this unit
for acute exposure, the acute dietary exposure from food and water to
cyazofamid will occupy <1% of the aPAD for females 13-50 years old, the
population group of concern for acute effects. Cyazofamid is not
expected to pose an acute risk to the general population, including
infants and children.
    2. Chronic risk. Using the exposure assumptions described in this
unit for chronic exposure, EPA has concluded that chronic exposure to
cyazofamid from food and water will utilize 1.1% of the cPAD for
infants less than 1 year old, the population group receiving the
greatest exposure. Based on the explanation in Unit III.C.3., regarding
residential use patterns, chronic residential exposure to residues of
cyazofamid is not expected.
    3. Short-term risk. Short-term aggregate exposure takes into
account short-term residential exposure plus chronic exposure to food
and water (considered to be a background exposure level). Cyazofamid is
currently registered for uses that could result in short-term
residential exposure and the Agency has determined that it is
appropriate to aggregate chronic exposure through food and water with
short-term residential exposures to cyazofamid.
    Using the exposure assumptions described in this unit for short-
term exposures, EPA has concluded the combined short-term food, water,
and residential exposures aggregated result in aggregate MOEs of 330
for adults, 7,100 for children 3-5 years old and 9,100 for children 6-
12 years old. The aggregate MOE for adults includes post-application
exposures on athletic fields treated with cyazofamid, the worst-case
post-application exposure scenario. The aggregate MOEs for children
include post-application exposure of young golfers on treated golf courses.
    4. Intermediate-term risk. Intermediate-term aggregate exposure
takes into account intermediate-term residential exposure plus chronic
exposure to food and water (considered to be a background exposure
level). Cyazofamid is currently registered for uses that could result
in intermediate-term residential exposure and the Agency has determined
that it is appropriate to aggregate chronic exposure to cyazofamid
through food and water with intermediate-term exposures for cyazofamid.
Since the endpoints and points of departure (NOAELs) are identical for
short and intermediate-term exposures, the aggregate MOEs for
intermediate-term exposure are the same as those for short-term
exposure (330 for adults, 7,100 for children 3-5 years old and 9,100
for children 6-12 years old).
    5. Aggregate cancer risk for U.S. population. EPA has classified
cyazofamid into the category ``Not likely to be carcinogenic to
humans''. Cyazofamid is not expected to pose a cancer risk.
    6. Determination of safety. Based on these risk assessments, EPA
concludes that there is a reasonable certainty that no harm will result
to the general population, or to infants and children from aggregate
exposure to cyazofamid residues.

IV. Other Considerations

A. Analytical Enforcement Methodology

    Adequate analytical methodology is available to enforce the
tolerance on carrot roots. Cyazofamid and the metabolite CCIM are
completely recovered (>80% recovery) using FDA's Multi-Residue Protocol
D (without cleanup). In addition, the petitioner has submitted the
results of an Independent Laboratory Validation (ILV) for an HPLC/UV
method (high performance liquid chromatography method using an ultra
violet detector) which can be used as a single analyte confirmatory
method. The 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 maximum residue limits (MRLs) established by Codex,
Canada or Mexico for cyazofamid.

C. Revisions to Petitioned-For Tolerances

    Based upon review of the data supporting the petition, EPA
determined that the proposed tolerance on ``carrot, roots'' should be
increased from 0.06 ppm to 0.09 ppm. EPA revised the tolerance level
based on analysis of the residue field trial data using the Agency's
Tolerance Spreadsheet in accordance with the Agency's Guidance for
Setting Pesticide Tolerances Based on Field Trial Data.

V. Conclusion

    Therefore, a tolerance is established for combined residues of
cyazofamid, 4-chloro-2-cyano-N,N-dimethyl-5-(4-methylphenyl)-1H-
imidazole-1-sulfonamide, and its metabolite CCIM, 4-chloro-5-(4-
methylphenyl)-1H-imidazole-2-carbonitrile, expressed as cyazofamid, in
or on carrot, roots at 0.09 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

[[Page 21839]]

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, 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 (59 FR 22951, November
9, 2000) do not apply to this final rule. In addition,
this final rule does not impose any enforceable duty or contain any
unfunded mandate as described under Title II of the Unfunded Mandates
Reform Act of 1995 (UMRA) (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: April 10, 2008.
Donald R. Stubbs,
Acting Director, Registration Division, Office of Pesticide Programs.

• Therefore, 40 CFR chapter I is amended as follows:

PART 180--[AMENDED]

• 1. The authority citation for part 180 continues to read as follows:

    Authority: 21 U.S.C. 321(q), 346a and 371.

• 2. Section 180.601 is amended by alphabetically adding the following
commodity to the table in paragraph (a) to read as follows:

Sec.  180.601  Cyazofamid; tolerances for residues.

    (a) * * *

------------------------------------------------------------------------
                      Commodity                        Parts per million
------------------------------------------------------------------------
Carrot, roots........................................               0.09
                                * * * * *
------------------------------------------------------------------------

* * * * *

[FR Doc. E8-8371 Filed 4-22-08; 8:45 am]
BILLING CODE 6560-50-S

 
 


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