Quinclorac; Pesticide Tolerances, 75561-75566 [2012-30851]
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Federal Register / Vol. 77, No. 246 / Friday, December 21, 2012 / Rules and Regulations
III. Why is this correction issued as a
final rule?
Section 553 of the Administrative
Procedure Act (APA) (5 U.S.C.
553(b)(3)(B)) provides that, when an
agency for good cause finds that notice
and public procedure are impracticable,
unnecessary, or contrary to the public
interest, the agency may issue a final
rule without providing notice and an
opportunity for public comment. EPA
has determined that there is good cause
for making this technical correction
final without prior proposal and
opportunity for comment, because this
action merely corrects erroneous crop
group names and an erroneous tolerance
level that were due to an inadvertent
error. Both the correct crop group names
and tolerance level received prominent
notice in the published notice of the
petition and in EPA’s preamble to the
final rule. EPA finds that this
constitutes good cause under 5 U.S.C.
553(b)(3)(B).
Rapeseed subgroup 20B; Sunflower
subgroup 20C; Vegetable, foliage of
legume, group 7, forage; and Vegetable,
foliage of legume, group 7, hay.
■ ii. Add alphabetically entries for
Rapeseed subgroup 20A; Sunflower
subgroup 20B; and Vegetable, foliage of
legume, group 7.
The added entries read as follows:
IV. Do any of the statutory and
Executive Order reviews apply to this
action?
No. For a detailed discussion
concerning the statutory and executive
order reviews, refer to Unit VI. of the
October 3, 2007 final rule.
Vegetable, foliage of legume, group 7 ...................
V. Congressional Review Act
Pursuant to the Congressional Review
Act (5 U.S.C. 801 et seq.), EPA will
submit a report containing this rule and
other required information to the U.S.
Senate, the U.S. House of
Representatives, and the Comptroller
General of the United States prior to
publication of the rule in the Federal
Register. This action is not a ‘‘major
rule’’ as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
Dated: December 12, 2012.
Lois Rossi,
Director, Registration Division, Office of
Pesticide Programs.
Therefore, 40 CFR part 180 is
corrected as follows:
PART 180—[AMENDED]
1. The authority citation for part 180
continues to read as follows:
■
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Authority: 21 U.S.C. 321(q), 346a and 371.
2. In Section 180.628, the table to
paragraph (a) is amended as follows:
■ i. Remove the entries for Cotton,
undelinted seed; Lunaria, seed;
■
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or at the Office of Pesticide Programs
Regulatory Public Docket (OPP Docket)
in the Environmental Protection Agency
Docket Center (EPA/DC), EPA West
Bldg., Rm. 3334, 1301 Constitution Ave.
NW., Washington, DC 20460–0001. The
Public Reading Room is open from 8:30
a.m. to 4:30 p.m., Monday through
Friday, excluding legal holidays. The
telephone number for the Public
§ 180.628 Chlorantraniliprole; tolerances
Reading Room is (202) 566–1744, and
for residues.
the telephone number for the OPP
(a) General. * * *
Docket is (703) 305–5805. Please review
the visitor instructions and additional
Parts per
Commodity
information about the docket available
million
at https://www.epa.gov/dockets.
FOR FURTHER INFORMATION CONTACT:
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Laura Nollen, Registration Division
(7505P), Office of Pesticide Programs,
Rapeseed subgroup 20A ....
2.0 Environmental Protection Agency, 1200
Pennsylvania Ave. NW., Washington,
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DC 20460–0001; telephone number:
Sunflower subgroup 20B ....
2.0 (703) 305–7390; email address:
nollen.laura@epa.gov.
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SUPPLEMENTARY INFORMATION:
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I. General Information
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[FR Doc. 2012–30850 Filed 12–20–12; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 180
[EPA–HQ–OPP–2012–0010; FRL–9372–4]
Quinclorac; Pesticide Tolerances
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
This regulation establishes
tolerances for residues of quinclorac in
or on berry, low growing, except
strawberry, subgroup 13–07 H and
rhubarb. Interregional Research Project
Number 4 (IR–4) requested these
tolerances under the Federal Food,
Drug, and Cosmetic Act (FFDCA).
DATES: This regulation is effective
December 21, 2012. Objections and
requests for hearings must be received
on or before February 19, 2013, and
must be filed in accordance with the
instructions provided in 40 CFR part
178 (see also Unit I.C. of the
SUPPLEMENTARY INFORMATION).
ADDRESSES: The docket for this action,
identified by docket identification (ID)
number EPA–HQ–OPP–2012–0010, is
available at https://www.regulations.gov
SUMMARY:
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A. Does this action apply to me?
You may be potentially affected by
this action if you are an agricultural
producer, food manufacturer, or
pesticide manufacturer. The following
list of North American Industrial
Classification System (NAICS) codes is
not intended to be exhaustive, but rather
provides a guide to help readers
determine whether this document
applies to them. Potentially affected
entities may include:
• Crop production (NAICS code 111).
• Animal production (NAICS code
112).
• Food manufacturing (NAICS code
311).
• Pesticide manufacturing (NAICS
code 32532).
B. How can I get electronic access to
other related information?
You may access a frequently updated
electronic version of EPA’s tolerance
regulations at 40 CFR part 180 through
the Government Printing Office’s e-CFR
site at https://ecfr.gpoaccess.gov/cgi/t/
text/text-idx?&c=ecfr&tpl=/ecfrbrowse/
Title40/40tab_02.tpl.
C. How can I file an objection or hearing
request?
Under FFDCA section 408(g), 21
U.S.C. 346a, any person may file an
objection to any aspect of this regulation
and may also request a hearing on those
objections. You must file your objection
or request a hearing on this regulation
in accordance with the instructions
provided in 40 CFR part 178. To ensure
proper receipt by EPA, you must
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identify docket ID number EPA–HQ–
OPP–2012–0010 in the subject line on
the first page of your submission. All
objections and requests for a hearing
must be in writing, and must be
received by the Hearing Clerk on or
before February 19, 2013. Addresses for
mail and hand delivery of objections
and hearing requests are provided in 40
CFR 178.25(b).
In addition to filing an objection or
hearing request with the Hearing Clerk
as described in 40 CFR part 178, please
submit a copy of the filing (excluding
any Confidential Business Information
(CBI)) for inclusion in the public docket.
Information not marked confidential
pursuant to 40 CFR part 2 may be
disclosed publicly by EPA without prior
notice. Submit the non-CBI copy of your
objection or hearing request, identified
by docket ID number EPA–HQ–OPP–
2012–0010, by one of the following
methods:
• Federal eRulemaking Portal: https://
www.regulations.gov. Follow the online
instructions for submitting comments.
Do not submit electronically any
information you consider to be
Confidential Business Information (CBI)
or other information whose disclosure is
restricted by statute.
• Mail: OPP Docket, Environmental
Protection Agency Docket Center (EPA/
DC), (28221T), 1200 Pennsylvania Ave.
NW., Washington, DC 20460–0001.
• Hand Delivery: To make special
arrangements for hand delivery or
delivery of boxed information, please
follow the instructions at https://
www.epa.gov/dockets/contacts.htm.
Additional instructions on commenting
or visiting the docket, along with more
information about dockets generally, is
available at https://www.epa.gov/
dockets.
There were no comments received in
response to the notice of filing.
Based upon review of the data
supporting the petition, EPA has revised
the tolerance levels for the proposed
commodities. The reason for these
changes is explained in Unit IV.C.
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II. Summary of Petitioned-for Tolerance
III. Aggregate Risk Assessment and
Determination of Safety
Section 408(b)(2)(A)(i) of FFDCA
allows EPA to establish a tolerance (the
legal limit for a pesticide chemical
residue in or on a food) only if EPA
determines that the tolerance is ‘‘safe.’’
Section 408(b)(2)(A)(ii) of FFDCA
defines ‘‘safe’’ to mean that ‘‘there is a
reasonable certainty that no harm will
result from aggregate exposure to the
pesticide chemical residue, including
all anticipated dietary exposures and all
other exposures for which there is
reliable information.’’ This includes
exposure through drinking water and in
residential settings, but does not include
occupational exposure. Section
408(b)(2)(C) of FFDCA requires EPA to
give special consideration to exposure
of infants and children to the pesticide
chemical residue in establishing a
tolerance and to ‘‘ensure that there is a
reasonable certainty that no harm will
result to infants and children from
aggregate exposure to the pesticide
chemical residue * * *.’’
Consistent with FFDCA section
408(b)(2)(D), and the factors specified in
FFDCA section 408(b)(2)(D), EPA has
reviewed the available scientific data
and other relevant information in
support of this action. EPA has
sufficient data to assess the hazards of
and to make a determination on
aggregate exposure for quinclorac
including exposure resulting from the
tolerances established by this action.
EPA’s assessment of exposures and risks
associated with quinclorac follows.
In the Federal Register of April 4,
2012 (77 FR 20334) (FRL–9340–4), EPA
issued a document pursuant to FFDCA
section 408(d)(3), 21 U.S.C. 346a(d)(3),
announcing the filing of a pesticide
petition (PP 1E7957) by IR–4, 500
College Road East, Suite 201W,
Princeton, NJ 08540. The petition
requested that 40 CFR 180.463 be
amended by establishing tolerances for
residues of the herbicide quinclorac,
3,7-dichloro-8-quinolinecarboxylic acid,
in or on berry, low growing, except
strawberry, subgroup 13–07H at 1.1
parts per million (ppm) and rhubarb at
0.4 ppm. That document referenced a
summary of the petition prepared on
behalf of IR–4 by BASF Corporation, the
registrant, which is available in the
docket, https://www.regulations.gov.
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.
Quinclorac has a low order of acute
toxicity via the oral, dermal, and
inhalation routes of exposure. It is not
a skin irritant, but is a mild eye irritant
and tested positive for dermal
sensitization. Following subchronic
exposures to quinclorac, signs of
toxicity included decreased body weight
gains, increased water intake, increased
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liver enzymes, and focal chronic
interstitial nephritis (rats). Chronic toxic
effects included body weight decrement,
increase in kidney and liver weights,
and hydropic degeneration of the
kidneys (dogs). At high doses, chronic
toxicity also included increased
incidences of pancreatic acinar cell
hyperplasia and adenomas in rats. There
was no evidence of neurotoxicity in any
acute, subchronic and chronic studies
for quinclorac.
There was no increased qualitative or
quantitative fetal or offspring
susceptibility in the prenatal
developmental or postnatal
reproduction studies. Developmental
toxicity in the rabbit consisted of
increased resorptions, post-implantation
loss, decreased number of live fetuses,
and reduced fetal body weight. These
effects occurred at higher doses than the
maternal effects of decreased food
consumption and increased water
consumption and decreased body
weight gain. In the rat, no
developmental toxicity was observed up
to the highest dose tested (HDT). In the
2-generation rat reproduction study,
parental toxicity and offspring toxicity
occurred at the same dose. Parental
toxicity consisted of reduced body
weight in both sexes during premating
and lactation periods, and offspring
toxicity consisted of decreased pup
weight, developmental delays, and
possible marginal effect on pup
viability. No reproductive toxicity
occurred up to the HDT in this study.
Quinclorac is not mutagenic in
bacterial assays and does not cause
unscheduled DNA damage in primary
rat hepatocytes. There is also no
evidence of a genotoxic response in
whole animal test systems (in vivo
mouse bone marrow micronucleus
assay) and was negative in a mammalian
cell in vitro cytogenetic chromosomal
aberration assay in Chinese hamster
ovary cells. Quinclorac produced an
equivocal increase in the incidence of
one type of benign tumor (pancreatic
acinar cell adenomas) in only one sex of
one species of animals (male Wistar
rats). There was no evidence of
carcinogenicity in mice or female rats.
Based on this limited evidence on
cancer, a quantification of cancer risk is
not warranted because the chronic RfD
will adequately account for all chronic
effects, including carcinogenicity, that
may result from exposure to quinclorac.
Specific information on the studies
received and the nature of the adverse
effects caused by quinclorac 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://
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www.regulations.gov in document,
‘‘Quinclorac: First Risk Assessment In
Support of Registration Review and for
New Proposed Use on Rhubarb and
Berry, low growing, except Strawberry,
Subgroup 13–07H,’’ pp. 62–65 in docket
ID number EPA–HQ–OPP–2012–0010.
B. Toxicological Points of Departure/
Levels of Concern
Once a pesticide’s toxicological
profile is determined, EPA identifies
toxicological points of departure (POD)
and levels of concern to use in
evaluating the risk posed by human
exposure to the pesticide. For hazards
that have a threshold below which there
is no appreciable risk, the toxicological
POD is used as the basis for derivation
of reference values for risk assessment.
PODs are developed based on a careful
analysis of the doses in each
toxicological study to determine the
dose at which no adverse effects are
observed (the NOAEL) and the lowest
dose at which adverse effects of concern
are identified (the LOAEL). Uncertainty/
safety factors are used in conjunction
with the POD to calculate a safe
exposure level—generally referred to as
a population-adjusted dose (PAD) or a
reference dose (RfD) and a safe margin
of exposure (MOE). For non-threshold
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risks, the Agency assumes that any
amount of exposure will lead to some
degree of risk. Thus, the Agency
estimates risk in terms of the probability
of an occurrence of the adverse effect
expected in a lifetime. For more
information on the general principles
EPA uses in risk characterization and a
complete description of the risk
assessment process, see https://
www.epa.gov/pesticides/factsheets/
riskassess.htm.
A summary of the toxicological
endpoints for quinclorac used for
human risk assessment is shown in
following Table.
TABLE 1—SUMMARY OF TOXICOLOGICAL DOSES AND ENDPOINTS FOR QUINCLORAC FOR USE IN HUMAN HEALTH RISK
ASSESSMENT
Point of departure and
uncertainty/safety factors
RfD, PAD, LOC for risk
assessment
Study and toxicological effects
Acute dietary (Females 13–49 years
of age).
NOAEL = 200 mg/kg/
day.
UFA = 10x
UFH = 10x
FQPA SF = 1x
Acute RfD = 2.0 mg/kg/
day.
aPAD = 2.0 mg/kg/day
Developmental toxicity study in rabbits.
LOAEL = 600 mg/kg/day based on increased
early resorptions and postimplantation loss, decreased live fetuses, decreased fetal body
weight.
Acute dietary (General population including infants and children).
Not applicable. An endpoint for acute dietary exposure to the general population was not selected because there was no available endpoint attributable to a single exposure that was appropriate for
this scenario (effects observed in the available studies are presumed to require more than one exposure).
Chronic dietary (All populations) .........
NOAEL= 37.5 mg/kg/
day.
UFA = 10x
UFH = 10x
FQPA SF = 1x
Chronic RfD = 0.38 mg/
kg/day.
cPAD = 0.38 mg/kg/day
Carcinogenicity study in mice.
LOAEL = 150 mg/kg/day based on decreased
body weight.
Inhalation short-term (1 to 30 days) ....
Oral study NOAEL= 70
mg/kg/day (inhalation
absorption rate =
100%).
UFA = 10x
UFH = 10x
FQPA SF = 1x
LOC for MOE = 100 ......
Developmental toxicity study in rabbits.
LOAEL = 200 mg/kg/day based on decreased
maternal body weight gain and food consumption, and increased water consumption.
Incidental oral short-term (1 to 30
days).
NOAEL= 70 mg/kg/day
UFA = 10x
UFH = 10x
FQPA SF = 1x
LOC for MOE = 100 ......
Developmental toxicity study in rabbits.
LOAEL = 200 mg/kg/day based on decreased
maternal body weight gain and food consumption, and increased water consumption.
Cancer (Oral, dermal, inhalation) ........
The chronic RfD will adequately account for all chronic effects, including carcinogenicity, that may result
from exposure to quinclorac.
Exposure/scenario
FQPA SF = Food Quality Protection Act Safety Factor. LOAEL = lowest-observed-adverse-effect-level. LOC = level of concern. mg/kg/day =
milligram/kilogram/day. MOE = margin of exposure. NOAEL = no-observed-adverse-effect-level. PAD = population adjusted dose (a = acute, c =
chronic). RfD = reference dose. UF = uncertainty factor. UFA = extrapolation from animal to human (interspecies). UFH = potential variation in
sensitivity among members of the human population (intraspecies).
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C. Exposure Assessment
1. Dietary exposure from food and
feed uses. In evaluating dietary
exposure to quinclorac, EPA considered
exposure under the petitioned-for
tolerances as well as all existing
quinclorac tolerances in 40 CFR
180.463. EPA assessed dietary
exposures from quinclorac in food as
follows:
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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 early resorptions and postimplantation loss, decreased live
fetuses, and decreased fetal body weight
in developmental toxicity study in
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rabbits) for the population subgroup
females 13 to 49 years old; however, no
such effect was identified for the general
population, including infants and
children.
In estimating acute dietary exposure
for females 13–49, the population group
identified as having an acute dietary
exposure, EPA used Dietary Exposure
Evaluation Model software with the
Food Commodity Intake Database
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(DEEM–FCID) Version 3.16, which uses
food consumption data from the U.S.
Department of Agriculture’s National
Health and Nutrition Examination
Survey, What We Eat in America,
(NHANES/WWEIA), conducted from
2003–2008. As to residue levels in food,
EPA assumed 100 percent crop treated
(PCT) and tolerance-level residues for
all commodities. In addition, DEEM
version 7.81 default processing factors
were used when appropriate.
ii. Chronic exposure. In conducting
the chronic dietary exposure assessment
EPA used the food consumption data
from the USDA’s 2003–2008 NHANES/
WWEIA. As to residue levels in food,
EPA assumed 100 PCT and tolerancelevel residues for all commodities. In
addition, DEEM version 7.81 default
processing factors were used when
appropriate.
iii. Cancer. Based on the data
summarized in Unit III.A., EPA has
concluded that a nonlinear RfD
approach is appropriate for assessing
cancer risk to quinclorac. Cancer risk
was assessed using the same exposure
estimates as discussed in Unit III.C.1.ii.
iv. Anticipated residue and PCT
information. EPA did not use
anticipated residue and/or PCT
information in the dietary assessment
for quinclorac. 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 quinclorac in drinking water. These
simulation models take into account
data on the physical, chemical, and fate/
transport characteristics of quinclorac.
Further information regarding EPA
drinking water models used in pesticide
exposure assessment can be found at
https://www.epa.gov/oppefed1/models/
water/index.htm.
Based on the Tier I Rice Model,
Version 1.0, the estimated drinking
water concentrations (EDWCs) of
quinclorac for surface water are
estimated to be 511 parts per billion
(ppb) for acute and chronic exposures.
Based on the Screening Concentration
in Ground Water (SCI GROW) model,
the EDWCs for ground water are
estimated to be 29 ppb for acute and
chronic exposures.
Modeled estimates of drinking water
concentrations were directly entered
into the dietary exposure model. For
acute and chronic dietary risk
assessments, the water concentration
value of 511 ppb was used to assess the
contribution to drinking water.
3. From non-dietary exposure. The
term ‘‘residential exposure’’ is used in
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this document to refer to nonoccupational, non-dietary exposure
(e.g., for lawn and garden pest control,
indoor pest control, termiticides, and
flea and tick control on pets).
Quinclorac is currently registered for
the following uses that could result in
residential exposures: Turf grass and
ornamentals. EPA assessed residential
exposure using the following
assumptions: Short-term inhalation
exposures for residential handlers from
mixing, loading, and applying
quinclorac to residential turf and shortterm postapplication incidental oral
exposures (hand-to-mouth activities) of
children from contact with treated turf.
Intermediate-term exposures resulting
from adult handler and postapplication
exposures were not assessed due to a
lack of a dermal point of departure.
Incidental oral scenarios for children are
considered to be short-term only.
Further information regarding EPA
standard assumptions and generic
inputs for residential exposures may be
found at https://www.epa.gov/pesticides/
trac/science/trac6a05.pdf.
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 quinclorac to share
a common mechanism of toxicity with
any other substances, and quinclorac
does not appear to produce a toxic
metabolite produced by other
substances. For the purposes of this
tolerance action, therefore, EPA has
assumed that quinclorac does not have
a common mechanism of toxicity with
other substances. For information
regarding EPA’s efforts to determine
which chemicals have a common
mechanism of toxicity and to evaluate
the cumulative effects of such
chemicals, see EPA’s Web site at
https://www.epa.gov/pesticides/
cumulative.
and children. This additional margin of
safety is commonly referred to as the
FQPA Safety Factor (SF). In applying
this provision, EPA either retains the
default value of 10X, or uses a different
additional safety factor when reliable
data available to EPA support the choice
of a different factor.
2. Prenatal and postnatal sensitivity.
The toxicology database for quinclorac
consists of developmental toxicity
studies in rats and rabbits and a 2generation reproduction study in rats.
There is no indication of increased
qualitative or quantitative susceptibility
of rats or rabbit fetuses to in utero and/
or postnatal exposure in the
developmental and reproductive
toxicity data.
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 quinclorac
is complete.
ii. There is no indication that
quinclorac 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
quinclorac results in increased
susceptibility in in utero rats or rabbits
in the prenatal developmental studies or
in young rats in the 2-generation
reproduction study.
iv. There are no residual uncertainties
identified in the exposure databases.
The dietary food exposure assessments
were performed based on 100 PCT and
tolerance-level residues. EPA made
conservative (protective) assumptions in
the ground and surface water modeling
used to assess exposure to quinclorac in
drinking water. EPA used similarly
conservative assumptions to assess
incidental oral exposures (hand-tomouth activities) of toddlers to
quinclorac. These assessments will not
underestimate the exposure and risks
posed by quinclorac.
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
EPA determines whether acute and
chronic dietary pesticide exposures are
safe by comparing aggregate exposure
estimates to the acute PAD (aPAD) and
chronic PAD (cPAD). For linear cancer
risks, EPA calculates the lifetime
probability of acquiring cancer given the
estimated aggregate exposure. Short-,
intermediate-, and chronic-term risks
are evaluated by comparing the
estimated aggregate food, water, and
residential exposure to the appropriate
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E. Aggregate Risks and Determination of
Safety
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PODs to ensure that an adequate MOE
exists.
1. Acute risk. Using the exposure
assumptions discussed in this unit for
acute exposure, the acute dietary
exposure from food and water to
quinclorac will occupy 1.6% of the
aPAD for females 13–49, the population
group for which a potential acute risk
was identified.
2. Chronic risk. Using the exposure
assumptions described in this unit for
chronic exposure, EPA has concluded
that chronic exposure to quinclorac
from food and water will utilize 8.9% of
the cPAD for infants less than 1 year of
age, 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
quinclorac 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). Quinclorac 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
quinclorac.
Using the exposure assumptions
described in this unit for short-term
exposures, EPA has concluded the
combined short-term food, water, and
residential exposures result in aggregate
MOEs of 2,100 for adults and 1,600 for
children 1–2 years old. Because EPA’s
level of concern for quinclorac is a MOE
of 100 or below, these MOEs are not of
concern.
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). An
intermediate-term adverse effect was
identified; however, quinclorac is not
registered for any use patterns that
would result in intermediate-term
residential exposure. Intermediate-term
risk is assessed based on intermediateterm residential exposure plus chronic
dietary exposure. Because there is no
intermediate-term residential exposure
and chronic dietary exposure has
already been assessed under the
appropriately protective cPAD (which is
at least as protective as the POD used to
assess intermediate-term risk), no
further assessment of intermediate-term
risk is necessary, and EPA relies on the
chronic dietary risk assessment for
VerDate Mar<15>2010
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Jkt 229001
evaluating intermediate-term risk for
quinclorac.
5. Aggregate cancer risk for U.S.
population. Based on the discussion in
Unit III.A., EPA has concluded that the
cPAD is protective of possible cancer
effects.
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 quinclorac
residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
An adequate gas chromatography with
electron capture detection (GC/ECD)
method (BASF Method A8902), 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;
email address:
residuemethods@epa.gov.
B. International Residue Limits
In making its tolerance decisions, EPA
seeks to harmonize U.S. tolerances with
international standards whenever
possible, consistent with U.S. food
safety standards and agricultural
practices. EPA considers the
international maximum residue limits
(MRLs) established by the Codex
Alimentarius Commission (Codex), as
required by FFDCA section 408(b)(4).
The Codex Alimentarius is a joint
United Nations Food and Agriculture
Organization/World Health
Organization food standards program,
and it is recognized as an international
food safety standards-setting
organization in trade agreements to
which the United States is a party. EPA
may establish a tolerance that is
different from a Codex MRL; however,
FFDCA section 408(b)(4) requires that
EPA explain the reasons for departing
from the Codex level.
The Codex has not established a MRL
for quinclorac.
C. Revisions to Petitioned-for Tolerances
Based on analysis of the residue field
trial data supporting the petition, EPA
revised the proposed tolerances on
berry, low growing, except strawberry,
subgroup 13–07H from 1.1 ppm to 1.5
ppm and rhubarb from 0.4 ppm to 0.5
ppm. The Agency revised these
tolerance levels based on analysis of the
residue field trial data using the
Organization for Economic Co-operation
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75565
and Development (OECD) tolerance
calculation procedures.
V. Conclusion
Therefore, tolerances are established
for residues of quinclorac, 3,7-dichloro8-quinolinecarboxylic acid, in or on
berry, low growing, except strawberry,
subgroup 13–07H at 1.5 ppm; and
rhubarb at 0.5 ppm.
VI. Statutory and Executive Order
Reviews
This final rule establishes tolerances
under FFDCA section 408(d) in
response to a petition submitted to the
Agency. The Office of Management and
Budget (OMB) has exempted these types
of actions from review under Executive
Order 12866, entitled ‘‘Regulatory
Planning and Review’’ (58 FR 51735,
October 4, 1993). Because this final rule
has been exempted from review under
Executive Order 12866, this final rule is
not subject to Executive Order 13211,
entitled ‘‘Actions Concerning
Regulations That Significantly Affect
Energy Supply, Distribution, or Use’’ (66
FR 28355, May 22, 2001) or Executive
Order 13045, entitled ‘‘Protection of
Children from Environmental Health
Risks and Safety Risks’’ (62 FR 19885,
April 23, 1997). This final rule does not
contain any information collections
subject to OMB approval under the
Paperwork Reduction Act (PRA) (44
U.S.C. 3501 et seq.), nor does it require
any special considerations under
Executive Order 12898, entitled
‘‘Federal Actions to Address
Environmental Justice in Minority
Populations and Low-Income
Populations’’ (59 FR 7629, February 16,
1994).
Since tolerances and exemptions that
are established on the basis of a petition
under FFDCA section 408(d), such as
the tolerance in this final rule, do not
require the issuance of a proposed rule,
the requirements of the Regulatory
Flexibility Act (RFA) (5 U.S.C. 601 et
seq.), do not apply.
This final rule directly regulates
growers, food processors, food handlers,
and food retailers, not States or tribes,
nor does this action alter the
relationships or distribution of power
and responsibilities established by
Congress in the preemption provisions
of FFDCA section 408(n)(4). As such,
the Agency has determined that this
action will not have a substantial direct
effect on States or tribal governments,
on the relationship between the national
government and the States or tribal
governments, or on the distribution of
power and responsibilities among the
various levels of government or between
the Federal Government and Indian
E:\FR\FM\21DER1.SGM
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75566
Federal Register / Vol. 77, No. 246 / Friday, December 21, 2012 / Rules and Regulations
tribes. Thus, the Agency has determined
that Executive Order 13132, entitled
‘‘Federalism’’ (64 FR 43255, August 10,
1999) and Executive Order 13175,
entitled ‘‘Consultation and Coordination
with Indian Tribal Governments’’ (65 FR
67249, November 9, 2000) do not apply
to this final rule. In addition, this final
rule does not impose any enforceable
duty or contain any unfunded mandate
as described under Title II of the
Unfunded Mandates Reform Act of 1995
(UMRA) (2 U.S.C. 1501 et seq.).
This action does not involve any
technical standards that would require
Agency consideration of voluntary
consensus standards pursuant to section
12(d) of the National Technology
Transfer and Advancement Act of 1995
(NTTAA) (15 U.S.C. 272 note).
VII. Congressional Review Act
Pursuant to the Congressional Review
Act (5 U.S.C. 801 et seq.), EPA will
submit a report containing this rule and
other required information to the U.S.
Senate, the U.S. House of
Representatives, and the Comptroller
General of the United States prior to
publication of the rule in the Federal
Register. This action is not a ‘‘major
rule’’ as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
Dated: December 12, 2012.
Lois Rossi,
Director, Registration Division, Office of
Pesticide Programs.
Parts per
million
Commodity
*
*
*
*
*
the applicability of this action to a
particular entity, consult the technical
person listed under FOR FURTHER
INFORMATION CONTACT.
II. What rule is being withdrawn?
*
*
*
*
*
[FR Doc. 2012–30851 Filed 12–20–12; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Parts 9 and 721
[EPA–HQ–OPPT–2012–0740; FRL–9373–8]
RIN 2070–AB27
Significant New Use Rule on Certain
Chemical Substances; Withdrawal of
Significant New Use Rules
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
EPA is withdrawing
significant new use rules (SNURs)
promulgated under the Toxic
Substances Control Act (TSCA) for
chemical substances which were the
subject of premanufacture notices
(PMNs). EPA published these SNURs
using direct final rulemaking
procedures. EPA received notices of
intent to submit adverse comments on
these rules. Therefore, the Agency is
withdrawing these SNURs, as required
under the expedited SNUR rulemaking
process. EPA intends to publish in the
near future proposed SNURs for these
eight chemical substances under
separate notice and comment
procedures.
SUMMARY:
In the Federal Register of November
2, 2012 (77 FR 66149), EPA issued
several direct final SNURs, including
SNURs for the chemical substances that
are the subject of this withdrawal. These
direct final rules were issued pursuant
to the procedures in 40 CFR part 721,
subpart D. In accordance with
§ 721.160(c)(3)(ii), EPA is withdrawing
the rule issued for eight chemical
substances which were the subject of
PMNs P–11–327, P–11–328, P–11–329,
P–11–330, P–11–331, P–11–332, P–12–
298, and P–12–299, because the Agency
received notices of intent to submit
adverse comments. EPA intends to
publish a proposed SNUR for these
chemical substances under separate
notice and comment procedures.
For further information regarding
EPA’s expedited process for issuing
SNURs, interested parties are directed to
40 CFR part 721, subpart D, and the
Federal Register of July 27, 1989 (54 FR
31314). The record for the direct final
SNURs for the chemical substances that
are being withdrawn was established at
EPA–HQ–OPPT–2012–0740. That
record includes information considered
by the Agency in developing these rules
and the notices of intent to submit
adverse comments.
III. How do I access the docket?
Therefore, 40 CFR chapter I is
amended as follows:
DATES:
PART 180—[AMENDED]
FOR FURTHER INFORMATION CONTACT:
For technical information contact:
Kenneth Moss, Chemical Control
Division (7405M), Office of Pollution
Prevention and Toxics, Environmental
Protection Agency, 1200 Pennsylvania
Ave. NW., Washington, DC 20460–0001;
telephone number: (202) 564–9232;
email address: Moss.Kenneth@epa.gov.
For general information contact: The
TSCA-Hotline, ABVI-Goodwill, 422
South Clinton Ave., Rochester, NY
14620; telephone number: (202) 554–
1404; email address: TSCAHotline@epa.gov.
To access the electronic docket,
please go to https://www.regulations.gov
and follow the online instructions to
access docket ID number EPA–HQ–
OPPT–2012–0740. Additional
information about the Docket Facility is
provided under ADDRESSES in the
Federal Register of November 2, 2012
(77 FR 66149). If you have questions,
consult the technical person listed
under FOR FURTHER INFORMATION
CONTACT.
IV. Statutory and Executive Order
Reviews
This final rule is effective
January 2, 2013.
1. The authority citation for part 180
continues to read as follows:
■
Authority: 21 U.S.C. 321(q), 346a and 371.
2. In § 180.463, add alphabetically the
following commodities to the table in
paragraph (a) to read as follows:
■
§ 180.463 Quinclorac; tolerances for
residues.
(a) * * *
Parts per
million
mstockstill on DSK4VPTVN1PROD with
Commodity
*
*
*
Berry, low growing, except
strawberry, subgroup 13–
07H ....................................
*
*
*
*
Rhubarb ................................
*
VerDate Mar<15>2010
16:08 Dec 20, 2012
SUPPLEMENTARY INFORMATION:
*
I. Does this action apply to me?
1.5
*
0.5
Jkt 229001
A list of potentially affected entities is
provided in the Federal Register of
November 2, 2012 (77 FR 66149) (FRL–
9366–7). If you have questions regarding
PO 00000
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This final rule revokes or eliminates
an existing regulatory requirements and
does not contain any new or amended
requirements. As such, the Agency has
determined that this withdrawal will
not have any adverse impacts, economic
or otherwise. The statutory and
executive order review requirements
applicable to the direct final rules were
discussed in the Federal Register of
November 2, 2012 (77 FR 66149). Those
review requirements do not apply to
this action because it is a withdrawal
E:\FR\FM\21DER1.SGM
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Agencies
[Federal Register Volume 77, Number 246 (Friday, December 21, 2012)]
[Rules and Regulations]
[Pages 75561-75566]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-30851]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2012-0010; FRL-9372-4]
Quinclorac; Pesticide Tolerances
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes tolerances for residues of
quinclorac in or on berry, low growing, except strawberry, subgroup 13-
07 H and rhubarb. Interregional Research Project Number 4 (IR-4)
requested these tolerances under the Federal Food, Drug, and Cosmetic
Act (FFDCA).
DATES: This regulation is effective December 21, 2012. Objections and
requests for hearings must be received on or before February 19, 2013,
and must be filed in accordance with the instructions provided in 40
CFR part 178 (see also Unit I.C. of the SUPPLEMENTARY INFORMATION).
ADDRESSES: The docket for this action, identified by docket
identification (ID) number EPA-HQ-OPP-2012-0010, is available at https://www.regulations.gov or at the Office of Pesticide Programs Regulatory
Public Docket (OPP Docket) in the Environmental Protection Agency
Docket Center (EPA/DC), EPA West Bldg., Rm. 3334, 1301 Constitution
Ave. NW., Washington, DC 20460-0001. The Public Reading Room is open
from 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding legal
holidays. The telephone number for the Public Reading Room is (202)
566-1744, and the telephone number for the OPP Docket is (703) 305-
5805. Please review the visitor instructions and additional information
about the docket available at https://www.epa.gov/dockets.
FOR FURTHER INFORMATION CONTACT: Laura Nollen, Registration Division
(7505P), Office of Pesticide Programs, Environmental Protection Agency,
1200 Pennsylvania Ave. NW., Washington, DC 20460-0001; telephone
number: (703) 305-7390; email address: nollen.laura@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
A. Does this action apply to me?
You may be potentially affected by this action if you are an
agricultural producer, food manufacturer, or pesticide manufacturer.
The following list of North American Industrial Classification System
(NAICS) codes is not intended to be exhaustive, but rather provides a
guide to help readers determine whether this document applies to them.
Potentially affected entities may include:
Crop production (NAICS code 111).
Animal production (NAICS code 112).
Food manufacturing (NAICS code 311).
Pesticide manufacturing (NAICS code 32532).
B. How can I get electronic access to other related information?
You may access a frequently updated electronic version of EPA's
tolerance regulations at 40 CFR part 180 through the Government
Printing Office's e-CFR site at https://ecfr.gpoaccess.gov/cgi/t/text/text-idx?&c=ecfr&tpl=/ecfrbrowse/Title40/40tab_02.tpl.
C. How can I file an objection or hearing request?
Under FFDCA section 408(g), 21 U.S.C. 346a, any person may file an
objection to any aspect of this regulation and may also request a
hearing on those objections. You must file your objection or request a
hearing on this regulation in accordance with the instructions provided
in 40 CFR part 178. To ensure proper receipt by EPA, you must
[[Page 75562]]
identify docket ID number EPA-HQ-OPP-2012-0010 in the subject line on
the first page of your submission. All objections and requests for a
hearing must be in writing, and must be received by the Hearing Clerk
on or before February 19, 2013. Addresses for mail and hand delivery of
objections and hearing requests are provided in 40 CFR 178.25(b).
In addition to filing an objection or hearing request with the
Hearing Clerk as described in 40 CFR part 178, please submit a copy of
the filing (excluding any Confidential Business Information (CBI)) for
inclusion in the public docket. Information not marked confidential
pursuant to 40 CFR part 2 may be disclosed publicly by EPA without
prior notice. Submit the non-CBI copy of your objection or hearing
request, identified by docket ID number EPA-HQ-OPP-2012-0010, by one of
the following methods:
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the online instructions for submitting comments. Do not submit
electronically any information you consider to be Confidential Business
Information (CBI) or other information whose disclosure is restricted
by statute.
Mail: OPP Docket, Environmental Protection Agency Docket
Center (EPA/DC), (28221T), 1200 Pennsylvania Ave. NW., Washington, DC
20460-0001.
Hand Delivery: To make special arrangements for hand
delivery or delivery of boxed information, please follow the
instructions at https://www.epa.gov/dockets/contacts.htm.
Additional instructions on commenting or visiting the docket, along
with more information about dockets generally, is available at https://www.epa.gov/dockets.
II. Summary of Petitioned-for Tolerance
In the Federal Register of April 4, 2012 (77 FR 20334) (FRL-9340-
4), EPA issued a document pursuant to FFDCA section 408(d)(3), 21
U.S.C. 346a(d)(3), announcing the filing of a pesticide petition (PP
1E7957) by IR-4, 500 College Road East, Suite 201W, Princeton, NJ
08540. The petition requested that 40 CFR 180.463 be amended by
establishing tolerances for residues of the herbicide quinclorac, 3,7-
dichloro-8-quinolinecarboxylic acid, in or on berry, low growing,
except strawberry, subgroup 13-07H at 1.1 parts per million (ppm) and
rhubarb at 0.4 ppm. That document referenced a summary of the petition
prepared on behalf of IR-4 by BASF Corporation, the registrant, which
is available in the docket, https://www.regulations.gov. There were no
comments received in response to the notice of filing.
Based upon review of the data supporting the petition, EPA has
revised the tolerance levels for the proposed commodities. The reason
for these changes 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 FFDCA section 408(b)(2)(D), and the factors
specified in FFDCA section 408(b)(2)(D), EPA has reviewed the available
scientific data and other relevant information in support of this
action. EPA has sufficient data to assess the hazards of and to make a
determination on aggregate exposure for quinclorac including exposure
resulting from the tolerances established by this action. EPA's
assessment of exposures and risks associated with quinclorac 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.
Quinclorac has a low order of acute toxicity via the oral, dermal,
and inhalation routes of exposure. It is not a skin irritant, but is a
mild eye irritant and tested positive for dermal sensitization.
Following subchronic exposures to quinclorac, signs of toxicity
included decreased body weight gains, increased water intake, increased
liver enzymes, and focal chronic interstitial nephritis (rats). Chronic
toxic effects included body weight decrement, increase in kidney and
liver weights, and hydropic degeneration of the kidneys (dogs). At high
doses, chronic toxicity also included increased incidences of
pancreatic acinar cell hyperplasia and adenomas in rats. There was no
evidence of neurotoxicity in any acute, subchronic and chronic studies
for quinclorac.
There was no increased qualitative or quantitative fetal or
offspring susceptibility in the prenatal developmental or postnatal
reproduction studies. Developmental toxicity in the rabbit consisted of
increased resorptions, post-implantation loss, decreased number of live
fetuses, and reduced fetal body weight. These effects occurred at
higher doses than the maternal effects of decreased food consumption
and increased water consumption and decreased body weight gain. In the
rat, no developmental toxicity was observed up to the highest dose
tested (HDT). In the 2-generation rat reproduction study, parental
toxicity and offspring toxicity occurred at the same dose. Parental
toxicity consisted of reduced body weight in both sexes during
premating and lactation periods, and offspring toxicity consisted of
decreased pup weight, developmental delays, and possible marginal
effect on pup viability. No reproductive toxicity occurred up to the
HDT in this study.
Quinclorac is not mutagenic in bacterial assays and does not cause
unscheduled DNA damage in primary rat hepatocytes. There is also no
evidence of a genotoxic response in whole animal test systems (in vivo
mouse bone marrow micronucleus assay) and was negative in a mammalian
cell in vitro cytogenetic chromosomal aberration assay in Chinese
hamster ovary cells. Quinclorac produced an equivocal increase in the
incidence of one type of benign tumor (pancreatic acinar cell adenomas)
in only one sex of one species of animals (male Wistar rats). There was
no evidence of carcinogenicity in mice or female rats. Based on this
limited evidence on cancer, a quantification of cancer risk is not
warranted because the chronic RfD will adequately account for all
chronic effects, including carcinogenicity, that may result from
exposure to quinclorac.
Specific information on the studies received and the nature of the
adverse effects caused by quinclorac 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://
[[Page 75563]]
www.regulations.gov in document, ``Quinclorac: First Risk Assessment In
Support of Registration Review and for New Proposed Use on Rhubarb and
Berry, low growing, except Strawberry, Subgroup 13-07H,'' pp. 62-65 in
docket ID number EPA-HQ-OPP-2012-0010.
B. Toxicological Points of Departure/Levels of Concern
Once a pesticide's toxicological profile is determined, EPA
identifies toxicological points of departure (POD) and levels of
concern to use in evaluating the risk posed by human exposure to the
pesticide. For hazards that have a threshold below which there is no
appreciable risk, the toxicological POD is used as the basis for
derivation of reference values for risk assessment. PODs are developed
based on a careful analysis of the doses in each toxicological study to
determine the dose at which no adverse effects are observed (the NOAEL)
and the lowest dose at which adverse effects of concern are identified
(the LOAEL). Uncertainty/safety factors are used in conjunction with
the POD to calculate a safe exposure level--generally referred to as a
population-adjusted dose (PAD) or a reference dose (RfD) and a safe
margin of exposure (MOE). For non-threshold risks, the Agency assumes
that any amount of exposure will lead to some degree of risk. Thus, the
Agency estimates risk in terms of the probability of an occurrence of
the adverse effect expected in a lifetime. For more information on the
general principles EPA uses in risk characterization and a complete
description of the risk assessment process, see https://www.epa.gov/pesticides/factsheets/riskassess.htm.
A summary of the toxicological endpoints for quinclorac used for
human risk assessment is shown in following Table.
Table 1--Summary of Toxicological Doses and Endpoints for Quinclorac for Use in Human Health Risk Assessment
----------------------------------------------------------------------------------------------------------------
Point of departure and
Exposure/scenario uncertainty/safety RfD, PAD, LOC for risk Study and toxicological
factors assessment effects
----------------------------------------------------------------------------------------------------------------
Acute dietary (Females 13-49 years NOAEL = 200 mg/kg/day. Acute RfD = 2.0 mg/kg/ Developmental toxicity
of age). UFA = 10x............. day. study in rabbits.
UFH = 10x............. aPAD = 2.0 mg/kg/day.. LOAEL = 600 mg/kg/day based
FQPA SF = 1x.......... on increased early
resorptions and
postimplantation loss,
decreased live fetuses,
decreased fetal body
weight.
----------------------------------------------------------------------------------------------------------------
Acute dietary (General population Not applicable. An endpoint for acute dietary exposure to the general
including infants and children). population was not selected because there was no available endpoint
attributable to a single exposure that was appropriate for this scenario
(effects observed in the available studies are presumed to require more
than one exposure).
----------------------------------------------------------------------------------------------------------------
Chronic dietary (All populations).. NOAEL= 37.5 mg/kg/day. Chronic RfD = 0.38 mg/ Carcinogenicity study in
UFA = 10x............. kg/day. mice.
UFH = 10x............. cPAD = 0.38 mg/kg/day. LOAEL = 150 mg/kg/day based
FQPA SF = 1x.......... on decreased body weight.
----------------------------------------------------------------------------------------------------------------
Inhalation short-term (1 to 30 Oral study NOAEL= 70 LOC for MOE = 100..... Developmental toxicity
days). mg/kg/day (inhalation study in rabbits.
absorption rate = LOAEL = 200 mg/kg/day based
100%). on decreased maternal body
UFA = 10x............. weight gain and food
UFH = 10x............. consumption, and increased
FQPA SF = 1x.......... water consumption.
----------------------------------------------------------------------------------------------------------------
Incidental oral short-term (1 to 30 NOAEL= 70 mg/kg/day... LOC for MOE = 100..... Developmental toxicity
days). UFA = 10x............. study in rabbits.
UFH = 10x............. LOAEL = 200 mg/kg/day based
FQPA SF = 1x.......... on decreased maternal body
weight gain and food
consumption, and increased
water consumption.
----------------------------------------------------------------------------------------------------------------
Cancer (Oral, dermal, inhalation).. The chronic RfD will adequately account for all chronic effects, including
carcinogenicity, that may result from exposure to quinclorac.
----------------------------------------------------------------------------------------------------------------
FQPA SF = Food Quality Protection Act Safety Factor. LOAEL = lowest-observed-adverse-effect-level. LOC = level
of concern. mg/kg/day = milligram/kilogram/day. MOE = margin of exposure. NOAEL = no-observed-adverse-effect-
level. PAD = population adjusted dose (a = acute, c = chronic). RfD = reference dose. UF = uncertainty factor.
UFA = extrapolation from animal to human (interspecies). UFH = potential variation in sensitivity among
members of the human population (intraspecies).
C. Exposure Assessment
1. Dietary exposure from food and feed uses. In evaluating dietary
exposure to quinclorac, EPA considered exposure under the petitioned-
for tolerances as well as all existing quinclorac tolerances in 40 CFR
180.463. EPA assessed dietary exposures from quinclorac 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 early resorptions and post-implantation loss,
decreased live fetuses, and decreased fetal body weight in
developmental toxicity study in rabbits) for the population subgroup
females 13 to 49 years old; however, no such effect was identified for
the general population, including infants and children.
In estimating acute dietary exposure for females 13-49, the
population group identified as having an acute dietary exposure, EPA
used Dietary Exposure Evaluation Model software with the Food Commodity
Intake Database
[[Page 75564]]
(DEEM-FCID) Version 3.16, which uses food consumption data from the
U.S. Department of Agriculture's National Health and Nutrition
Examination Survey, What We Eat in America, (NHANES/WWEIA), conducted
from 2003-2008. As to residue levels in food, EPA assumed 100 percent
crop treated (PCT) and tolerance-level residues for all commodities. In
addition, DEEM version 7.81 default processing factors were used when
appropriate.
ii. Chronic exposure. In conducting the chronic dietary exposure
assessment EPA used the food consumption data from the USDA's 2003-2008
NHANES/WWEIA. As to residue levels in food, EPA assumed 100 PCT and
tolerance-level residues for all commodities. In addition, DEEM version
7.81 default processing factors were used when appropriate.
iii. Cancer. Based on the data summarized in Unit III.A., EPA has
concluded that a nonlinear RfD approach is appropriate for assessing
cancer risk to quinclorac. Cancer risk was assessed using the same
exposure estimates as discussed in Unit III.C.1.ii.
iv. Anticipated residue and PCT information. EPA did not use
anticipated residue and/or PCT information in the dietary assessment
for quinclorac. 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 quinclorac in drinking water. These simulation models
take into account data on the physical, chemical, and fate/transport
characteristics of quinclorac. Further information regarding EPA
drinking water models used in pesticide exposure assessment can be
found at https://www.epa.gov/oppefed1/models/water/index.htm.
Based on the Tier I Rice Model, Version 1.0, the estimated drinking
water concentrations (EDWCs) of quinclorac for surface water are
estimated to be 511 parts per billion (ppb) for acute and chronic
exposures. Based on the Screening Concentration in Ground Water (SCI
GROW) model, the EDWCs for ground water are estimated to be 29 ppb for
acute and chronic exposures.
Modeled estimates of drinking water concentrations were directly
entered into the dietary exposure model. For acute and chronic dietary
risk assessments, the water concentration value of 511 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). Quinclorac is
currently registered for the following uses that could result in
residential exposures: Turf grass and ornamentals. EPA assessed
residential exposure using the following assumptions: Short-term
inhalation exposures for residential handlers from mixing, loading, and
applying quinclorac to residential turf and short-term postapplication
incidental oral exposures (hand-to-mouth activities) of children from
contact with treated turf. Intermediate-term exposures resulting from
adult handler and postapplication exposures were not assessed due to a
lack of a dermal point of departure. Incidental oral scenarios for
children are considered to be short-term only. Further information
regarding EPA standard assumptions and generic inputs for residential
exposures may be found at https://www.epa.gov/pesticides/trac/science/trac6a05.pdf.
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 quinclorac to share a common mechanism of
toxicity with any other substances, and quinclorac does not appear to
produce a toxic metabolite produced by other substances. For the
purposes of this tolerance action, therefore, EPA has assumed that
quinclorac does not have a common mechanism of toxicity with other
substances. For information regarding EPA's efforts to determine which
chemicals have a common mechanism of toxicity and to evaluate the
cumulative effects of such chemicals, see EPA's Web site at https://www.epa.gov/pesticides/cumulative.
D. Safety Factor for Infants and Children
1. In general. Section 408(b)(2)(C) of FFDCA provides that EPA
shall apply an additional tenfold (10X) margin of safety for infants
and children in the case of threshold effects to account for prenatal
and postnatal toxicity and the completeness of the database on toxicity
and exposure unless EPA determines based on reliable data that a
different margin of safety will be safe for infants and children. This
additional margin of safety is commonly referred to as the FQPA Safety
Factor (SF). In applying this provision, EPA either retains the default
value of 10X, or uses a different additional safety factor when
reliable data available to EPA support the choice of a different
factor.
2. Prenatal and postnatal sensitivity. The toxicology database for
quinclorac consists of developmental toxicity studies in rats and
rabbits and a 2-generation reproduction study in rats. There is no
indication of increased qualitative or quantitative susceptibility of
rats or rabbit fetuses to in utero and/or postnatal exposure in the
developmental and reproductive toxicity data.
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 quinclorac is complete.
ii. There is no indication that quinclorac 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 quinclorac results in increased
susceptibility in in utero rats or rabbits in the prenatal
developmental studies or in young rats in the 2-generation reproduction
study.
iv. There are no residual uncertainties identified in the exposure
databases. The dietary food exposure assessments were performed based
on 100 PCT and tolerance-level residues. EPA made conservative
(protective) assumptions in the ground and surface water modeling used
to assess exposure to quinclorac in drinking water. EPA used similarly
conservative assumptions to assess incidental oral exposures (hand-to-
mouth activities) of toddlers to quinclorac. These assessments will not
underestimate the exposure and risks posed by quinclorac.
E. Aggregate Risks and Determination of Safety
EPA determines whether acute and chronic dietary pesticide
exposures are safe by comparing aggregate exposure estimates to the
acute PAD (aPAD) and chronic PAD (cPAD). For linear cancer risks, EPA
calculates the lifetime probability of acquiring cancer given the
estimated aggregate exposure. Short-, intermediate-, and chronic-term
risks are evaluated by comparing the estimated aggregate food, water,
and residential exposure to the appropriate
[[Page 75565]]
PODs to ensure that an adequate MOE exists.
1. Acute risk. Using the exposure assumptions discussed in this
unit for acute exposure, the acute dietary exposure from food and water
to quinclorac will occupy 1.6% of the aPAD for females 13-49, the
population group for which a potential acute risk was identified.
2. Chronic risk. Using the exposure assumptions described in this
unit for chronic exposure, EPA has concluded that chronic exposure to
quinclorac from food and water will utilize 8.9% of the cPAD for
infants less than 1 year of age, 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
quinclorac 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). Quinclorac 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 quinclorac.
Using the exposure assumptions described in this unit for short-
term exposures, EPA has concluded the combined short-term food, water,
and residential exposures result in aggregate MOEs of 2,100 for adults
and 1,600 for children 1-2 years old. Because EPA's level of concern
for quinclorac is a MOE of 100 or below, these MOEs are not of concern.
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). An intermediate-term adverse effect was identified; however,
quinclorac is not registered for any use patterns that would result in
intermediate-term residential exposure. Intermediate-term risk is
assessed based on intermediate-term residential exposure plus chronic
dietary exposure. Because there is no intermediate-term residential
exposure and chronic dietary exposure has already been assessed under
the appropriately protective cPAD (which is at least as protective as
the POD used to assess intermediate-term risk), no further assessment
of intermediate-term risk is necessary, and EPA relies on the chronic
dietary risk assessment for evaluating intermediate-term risk for
quinclorac.
5. Aggregate cancer risk for U.S. population. Based on the
discussion in Unit III.A., EPA has concluded that the cPAD is
protective of possible cancer effects.
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 quinclorac residues.
IV. Other Considerations
A. Analytical Enforcement Methodology
An adequate gas chromatography with electron capture detection (GC/
ECD) method (BASF Method A8902), 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; email address:
residuemethods@epa.gov.
B. International Residue Limits
In making its tolerance decisions, EPA seeks to harmonize U.S.
tolerances with international standards whenever possible, consistent
with U.S. food safety standards and agricultural practices. EPA
considers the international maximum residue limits (MRLs) established
by the Codex Alimentarius Commission (Codex), as required by FFDCA
section 408(b)(4). The Codex Alimentarius is a joint United Nations
Food and Agriculture Organization/World Health Organization food
standards program, and it is recognized as an international food safety
standards-setting organization in trade agreements to which the United
States is a party. EPA may establish a tolerance that is different from
a Codex MRL; however, FFDCA section 408(b)(4) requires that EPA explain
the reasons for departing from the Codex level.
The Codex has not established a MRL for quinclorac.
C. Revisions to Petitioned-for Tolerances
Based on analysis of the residue field trial data supporting the
petition, EPA revised the proposed tolerances on berry, low growing,
except strawberry, subgroup 13-07H from 1.1 ppm to 1.5 ppm and rhubarb
from 0.4 ppm to 0.5 ppm. The Agency revised these tolerance levels
based on analysis of the residue field trial data using the
Organization for Economic Co-operation and Development (OECD) tolerance
calculation procedures.
V. Conclusion
Therefore, tolerances are established for residues of quinclorac,
3,7-dichloro-8-quinolinecarboxylic acid, in or on berry, low growing,
except strawberry, subgroup 13-07H at 1.5 ppm; and rhubarb at 0.5 ppm.
VI. Statutory and Executive Order Reviews
This final rule establishes tolerances under FFDCA section 408(d)
in response to a petition submitted to the Agency. The Office of
Management and Budget (OMB) has exempted these types of actions from
review under Executive Order 12866, entitled ``Regulatory Planning and
Review'' (58 FR 51735, October 4, 1993). Because this final rule has
been exempted from review under Executive Order 12866, this final rule
is not subject to Executive Order 13211, entitled ``Actions Concerning
Regulations That Significantly Affect Energy Supply, Distribution, or
Use'' (66 FR 28355, May 22, 2001) or Executive Order 13045, entitled
``Protection of Children from Environmental Health Risks and Safety
Risks'' (62 FR 19885, April 23, 1997). This final rule does not contain
any information collections subject to OMB approval under the Paperwork
Reduction Act (PRA) (44 U.S.C. 3501 et seq.), nor does it require any
special considerations under Executive Order 12898, entitled ``Federal
Actions to Address Environmental Justice in Minority Populations and
Low-Income Populations'' (59 FR 7629, February 16, 1994).
Since tolerances and exemptions that are established on the basis
of a petition under FFDCA section 408(d), such as the tolerance in this
final rule, do not require the issuance of a proposed rule, the
requirements of the Regulatory Flexibility Act (RFA) (5 U.S.C. 601 et
seq.), do not apply.
This final rule directly regulates growers, food processors, food
handlers, and food retailers, not States or tribes, nor does this
action alter the relationships or distribution of power and
responsibilities established by Congress in the preemption provisions
of FFDCA section 408(n)(4). As such, the Agency has determined that
this action will not have a substantial direct effect on States or
tribal governments, on the relationship between the national government
and the States or tribal governments, or on the distribution of power
and responsibilities among the various levels of government or between
the Federal Government and Indian
[[Page 75566]]
tribes. Thus, the Agency has determined that Executive Order 13132,
entitled ``Federalism'' (64 FR 43255, August 10, 1999) and Executive
Order 13175, entitled ``Consultation and Coordination with Indian
Tribal Governments'' (65 FR 67249, November 9, 2000) do not apply to
this final rule. In addition, this final rule does not impose any
enforceable duty or contain any unfunded mandate as described under
Title II of the Unfunded Mandates Reform Act of 1995 (UMRA) (2 U.S.C.
1501 et seq.).
This action does not involve any technical standards that would
require Agency consideration of voluntary consensus standards pursuant
to section 12(d) of the National Technology Transfer and Advancement
Act of 1995 (NTTAA) (15 U.S.C. 272 note).
VII. Congressional Review Act
Pursuant to the Congressional Review Act (5 U.S.C. 801 et seq.),
EPA will submit a report containing this rule and other required
information to the U.S. Senate, the U.S. House of Representatives, and
the Comptroller General of the United States prior to publication of
the rule in the Federal Register. This action is not a ``major rule''
as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection, Administrative practice and procedure,
Agricultural commodities, Pesticides and pests, Reporting and
recordkeeping requirements.
Dated: December 12, 2012.
Lois Rossi,
Director, Registration Division, Office of Pesticide Programs.
Therefore, 40 CFR chapter I is amended as follows:
PART 180--[AMENDED]
0
1. The authority citation for part 180 continues to read as follows:
Authority: 21 U.S.C. 321(q), 346a and 371.
0
2. In Sec. 180.463, add alphabetically the following commodities to
the table in paragraph (a) to read as follows:
Sec. 180.463 Quinclorac; tolerances for residues.
(a) * * *
------------------------------------------------------------------------
Parts per
Commodity million
------------------------------------------------------------------------
* * * * *
Berry, low growing, except strawberry, subgroup 13-07H.. 1.5
* * * * *
Rhubarb................................................. 0.5
* * * * *
------------------------------------------------------------------------
* * * * *
[FR Doc. 2012-30851 Filed 12-20-12; 8:45 am]
BILLING CODE 6560-50-P