80_FR_22726 80 FR 22648 - Bicyclopyrone; Pesticide Tolerances

80 FR 22648 - Bicyclopyrone; Pesticide Tolerances

ENVIRONMENTAL PROTECTION AGENCY

Federal Register Volume 80, Issue 78 (April 23, 2015)

Page Range22648-22654
FR Document2015-09482

This regulation establishes tolerances for residues of bicyclopyrone in or on field corn, forage; field corn, grain; field corn, stover; popcorn, grain; popcorn, stover; sweet corn, forage; sweet corn, ears; sweet corn, stover; sugarcane, stalks; cattle, liver; goat, meat byproducts; sheep, meat byproducts; horse, meat byproducts; and hog, meat byproducts. Syngenta requested these tolerances under the Federal Food, Drug, and Cosmetic Act (FFDCA).

Federal Register, Volume 80 Issue 78 (Thursday, April 23, 2015)
[Federal Register Volume 80, Number 78 (Thursday, April 23, 2015)]
[Rules and Regulations]
[Pages 22648-22654]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2015-09482]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 180

[EPA-HQ-OPP-2014-0355; FRL-9926-66]


Bicyclopyrone; Pesticide Tolerances

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: This regulation establishes tolerances for residues of 
bicyclopyrone

[[Page 22649]]

in or on field corn, forage; field corn, grain; field corn, stover; 
popcorn, grain; popcorn, stover; sweet corn, forage; sweet corn, ears; 
sweet corn, stover; sugarcane, stalks; cattle, liver; goat, meat 
byproducts; sheep, meat byproducts; horse, meat byproducts; and hog, 
meat byproducts. Syngenta requested these tolerances under the Federal 
Food, Drug, and Cosmetic Act (FFDCA).

DATES: This regulation is effective April 23, 2015. Objections and 
requests for hearings must be received on or before June 22, 2015, 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-2014-0355, is available at http://www.regulations.gov or at the Office of Pesticide Programs Regulatory 
Public Docket (OPP Docket) in the Environmental Protection Agency 
Docket Center (EPA/DC), West William Jefferson Clinton 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 http://www.epa.gov/dockets.

FOR FURTHER INFORMATION CONTACT: Susan Lewis, Registration Division 
(7505P), Office of Pesticide Programs, Environmental Protection Agency, 
1200 Pennsylvania Ave. NW., Washington, DC 20460-0001; main telephone 
number: (703) 305-7090; email address: RDFRNotices@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 
Publishing Office's e-CFR site at http://www.ecfr.gov/cgi-bin/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 identify 
docket ID number EPA-HQ-OPP-2014-0355 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 
June 22, 2015. 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-2014-0355, by one of 
the following methods:
     Federal eRulemaking Portal: http://www.regulations.gov. 
Follow the online instructions for submitting comments. Do not submit 
electronically any information you consider to be 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 http://www.epa.gov/dockets/contacts.html.
    Additional instructions on commenting or visiting the docket, along 
with more information about dockets generally, is available at http://www.epa.gov/dockets.

II. Summary of Petitioned-For Tolerance

    In the Federal Register of September 5, 2014 (79 FR 53009) (FRL-
9914-98), 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 
3F8225) by Syngenta Crop Protection, LLC., P.O. Box 18300, Greensboro, 
NC 27419. The petition requested that 40 CFR part 180 be amended by 
establishing tolerances for residues of the herbicide bicyclopyrone, 
herbicide, in or on field corn, forage at 0.4 parts per million (ppm); 
field corn, grain at 0.02 ppm; field corn, stover at 0.5 ppm; popcorn, 
grain at 0.02 ppm; popcorn, stover at 0.5 ppm; sweet corn, forage at 
0.4 ppm; sweet corn, ears at 0.02 ppm; sweet corn, stover at 0.5 ppm; 
sugarcane, stalks at 0.01 ppm; and cattle, liver at 0.06 ppm. That 
document referenced a summary of the petition prepared by Syngenta Crop 
Protection, LLC., the registrant, which is available in the docket, 
http://www.regulations.gov. In the Federal Register of February 11, 
2015 (80 FR 7559) (FRL-9921-94), EPA published a corrected notice of 
filing for the import tolerance on sugarcane petition. Comments were 
received for both items. EPA's response to these comments is discussed 
in Unit IV.C.
    Based upon review of the data supporting the petition, EPA has 
revised the proposed tolerances to corn, field, forage at 0.30 ppm; 
corn, field, grain at 0.02 ppm; corn, field, stover at 0.40 ppm; corn, 
pop, grain at 0.02 ppm; corn, pop, stover at 0.40 ppm; corn, sweet, 
forage at 0.40 ppm; corn, sweet, kernel plus cob with husks removed at 
0.03 ppm; corn, sweet, stover at 0.70 ppm; sugarcane, cane at 0.02 ppm; 
cattle, meat byproducts at 1.5 ppm; goat, meat byproducts at 1.5 ppm; 
sheep, meat byproducts at 1.5 ppm; horse, meat byproducts at 1.5 ppm; 
and hog, meat byproducts at 0.15 ppm. The reasons for these changes are 
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

[[Page 22650]]

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 bicyclopyrone including 
exposure resulting from the tolerances established by this action. 
EPA's assessment of exposures and risks associated with bicyclopyrone 
follows.

A. Toxicological Profile

    EPA has evaluated the available toxicity data and considered its 
validity, completeness, and reliability as well as the relationship of 
the results of the studies to human risk. EPA has also considered 
available information concerning the variability of the sensitivities 
of major identifiable subgroups of consumers, including infants and 
children.
    The effects of bicyclopyrone are indicative of inhibition of 4-
hydroxyphenylpyruvate dioxygenase (HPPD). Plasma tyrosine levels were 
consistently elevated in rats, rabbits, and dogs (levels in mice were 
not tested). Consistent with these elevated tyrosine levels, ocular 
effects (corneal opacity, keratitis) were observed for subchronic and 
chronic durations through the oral and dermal routes in rats, which was 
the most sensitive species tested (minor instances in dogs). There were 
also increased incidences of thyroid follicular hyperplasia and a 
chronic progressive nephropathy. While minor instances of ocular 
effects were observed in dogs, different toxicological effects were 
generally observed. For subchronic oral exposure, clinical signs 
(moderate hypoactivity, slightly unsteady gait, increased heart rate, 
regurgitation, and vomiting) were observed, and clinical pathological 
indicators of toxicity occurred in the eye and the thymus. Following 
chronic exposure, there was a dose-dependent increase in chromatolysis 
and swelling of selected neurons in the dorsal root ganglia, and 
degeneration of nerve fibers in the spinal nerve roots in both sexes. 
In one female dog at the high dose, corneal opacity and light 
sensitivity were observed.
    Across the database, there were decreased absolute body weights 
(the only finding in mice for any duration) and food consumption. There 
were no signs of immunotoxicity or neurotoxicity in rodents.
    Bicyclopyrone treatment resulted in developmental toxicity in both 
rats and rabbits, and there was an increased quantitative fetal 
susceptibility in both species tested. In rats, maternal toxicity was 
not observed up to 1000 mg/kg/day. Fetal effects occurred at all doses 
(>=100 mg/kg/day), and manifested as skeletal variations (increased 
incidences of full or rudimentary supernumerary ribs, pelvic girdle 
malpositioned caudal, costal cartilage 11 long). In New Zealand White 
rabbits, maternal effects consisted of mortality/moribundity in 
conjunction with minimal food consumption at 200 mg/kg/day. Fetal 
effects once again occurred at all doses tested (>=10 mg/kg/day). The 
sole fetal effect at the lowest dose tested was the appearance of the 
27th presacral vertebrae. There were two studies in Himalayan rabbits. 
In both studies, maternal effects consisted of macroscopic findings in 
the stomach wall and an increased incidence of post-implantation loss 
at the 250 mg/kg/day dose level. In the first study, fetal effects 
occurred starting at 50 mg/kg/day and consisted of skeletal variations 
(increased incidence of the 27th prepelvic vertebra and malpositioned 
pelvic girdle). In the second study, the increased quantitative fetal 
susceptibility was not observed due to a change in the dose selection. 
Fetal effects occurred at 250 mg/kg/day and consisted of external, 
visceral, and skeletal abnormalities, and visceral variations, 
skeletal, bone and cartilage variations. In total, the effects in these 
studies are consistent with effects of other chemicals in this class.
    In the two-generation reproductive study in rats, ocular toxicity 
occurred in parents and offspring and there was no increased offspring 
susceptibility of any kind. Reproductive effects included changes in 
sperm parameters, and a decrease of precoital interval.
    To determine the mechanism for the thyroid hyperplasia observed in 
the chronic/carcinogenicity study in rats, two mode-of-action studies 
were performed. In the in vitro study, bicyclopyrone was negative for 
thyroid peroxidase inhibition. The results from the in vivo study 
suggested that the observed thyroid hyperplasia was the result of 
increased metabolism of thyroid hormones indicated by (1) decreased 
plasma T3 and T4 levels, (2) increased thyroid follicular cell 
hypertrophy, (3) increased liver weights associated, and (4) increased 
hepatocellular centrilobular hypertrophy and increased hepatic uridine 
diphosphate glucuronyl transferase (UDPGT) activities.
    Bicyclopyrone is categorized as having low acute lethality via all 
routes of administration (Categories III and IV). Bicyclopyrone 
produces minimal eye irritation and mild acute inhalation toxicity 
(Toxicity Category IV).
    Specific information on the studies received and the nature of the 
adverse effects caused by bicyclopyrone as well as the lowest-observed-
adverse-effect-level (LOAEL) from the toxicity studies can be found at 
http://www.regulations.gov in document titled ``Bicyclopyrone: Human 
Health Risk Assessment for the Section 3 Registration Action on Corn 
and the Establishment of Permanent Tolerances for Residues in/on Corn 
and Imported Sugarcane'' at pp. 30-37 in docket ID number EPA-HQ-OPP-
2014-0355.

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 http://www.epa.gov/pesticides/factsheets/riskassess.htm.
    A summary of the toxicological endpoints for bicyclopyrone used for 
human risk assessment is shown in Table 1 of this unit.

[[Page 22651]]



 Table 1--Summary of Toxicological Doses and Endpoints for Bicyclopyrone for Use in Human Health Risk Assessment
----------------------------------------------------------------------------------------------------------------
                                    Point of departure
        Exposure/scenario            and uncertainty/     RfD, PAD, LOC for     Study and toxicological effects
                                      safety factors       risk assessment
----------------------------------------------------------------------------------------------------------------
Acute dietary (Females 13-49       LOAEL = 10 mg/kg/day  Acute RfD = 0.01 mg/ Prenatal Developmental Study (New
 years of age).                    UFA = 10x...........   kg/day.              Zealand White Rabbits).
                                   UFH = 10x...........  aPAD = 0.01 mg/kg/   Developmental LOAEL = 10 mg/kg/day
                                   FQPA SF/UFL = 10x...   day.                 based on skeletal variations (the
                                                                               appearance of the 27th presacral
                                                                               vertebrae).
Acute dietary (General population  No endpoint
 including infants and children).   attributable to a
                                    single dose and
                                    appropriate for the
                                    U.S. general
                                    population was seen
                                    in the
                                    bicyclopyrone
                                    toxicological
                                    database;
                                    therefore, an acute
                                    dietary point of
                                    departure for the
                                    general U.S.
                                    population was not
                                    established.
Chronic dietary (All populations)  LOAEL= 10 mg/kg/day.  Chronic RfD =        Carcinogenicity Study (rat).
                                   UFA = 10x...........   0.00028 mg/kg/day.  LOAEL = 0.28/0.35 mg/kg/day (Male/
                                   UFH = 10x...........  cPAD = 0.00028 mg/    Female) based on a dose dependent
                                   FQPA SF/UFL = 10x...   kg/day.              increase in the incidence of
                                                                               opaque eyes and corneal damage in
                                                                               both sexes compared to controls,
                                                                               an increased incidence of thyroid
                                                                               follicular hyperplasia in males,
                                                                               and an increased incidence of
                                                                               chronic progressive nephropathy
                                                                               in the kidneys of males.
Dermal Short- (1-30 days) and      LOAEL = 10 mg/kg/day  LOC for MOE = 1000.  Prenatal Developmental Study (New
 Intermediate-Term (1-6 months).   DAF = 20.44%........                        Zealand White Rabbits).
                                   UFA = 10x...........                       Developmental LOAEL = 10 mg/kg/day
                                   UFH = 10x...........                        based on skeletal variations (the
                                   FQPA SF/UFL = 10x...                        appearance of the 27th presacral
                                                                               vertebrae).
Inhalation Short- (1-30 days) and  LOAEL = 10 mg/kg/day  LOC for MOE = 1000.  Prenatal Developmental Study (New
 Intermediate-Term (1-6 months).   UFA = 10x...........                        Zealand White Rabbits).
                                   UFH = 10x...........                       Developmental LOAEL = 10 mg/kg/day
                                   FQPA SF/UFL = 10x...                        based on skeletal variations (the
                                                                               appearance of the 27th presacral
                                                                               vertebrae.
Cancer (Oral, dermal, inhalation)  Classification:
                                    ``Suggestive
                                    evidence of
                                    cancer'' based on
                                    the presence of
                                    rare ocular tumors
                                    in male rats.
                                    Quantification of
                                    bicyclopyrone's
                                    carcinogenic
                                    potential is not
                                    required. A non-
                                    linear approach
                                    (i.e., RfD) will
                                    adequately account
                                    for all chronic
                                    toxicity, including
                                    carcinogenicity
                                    that could result
                                    from exposure to
                                    bicyclopyrone.
----------------------------------------------------------------------------------------------------------------
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. PAD = population adjusted dose (a =
  acute, c = chronic). RfD = reference dose. UFA = extrapolation from animal to human (interspecies). UFH =
  potential variation in sensitivity among members of the human population (intraspecies). UFL = use of a LOAEL
  to extrapolate a NOAEL.

C. Exposure Assessment

    1. Dietary exposure from food and feed uses. In evaluating dietary 
exposure to bicyclopyrone, EPA considered exposure under the 
petitioned-for tolerances. EPA assessed dietary exposures from 
bicyclopyrone in food as follows:
    i. Acute exposure. Quantitative acute dietary exposure and risk 
assessments

[[Page 22652]]

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. Such effects were identified for 
bicyclopyrone. In estimating acute dietary exposure, EPA used food 
consumption information from the United States Department of 
Agriculture (USDA) 2003-2008 Nationwide Continuing Surveys of Food 
Intake by Individuals (CSFII). The acute dietary analysis was conducted 
for bicyclopyrone assuming tolerance level residues, default processing 
factors, and 100% crop treated (CT) information.
    ii. Chronic exposure. In conducting the chronic dietary exposure 
assessment EPA used the food consumption data from the USDA 2003-2008 
CSFII. The chronic dietary exposure assessment was conducted for 
bicyclopyrone assuming average field trial residues for crops, 
tolerance-level residues for livestock commodities, default processing 
factors, and 100% CT information.
    iii. Cancer. Based on the data summarized in Unit III.A., EPA has 
concluded that bicyclopyrone should be classified as ``suggestive 
evidence of cancer'' based on the presence of rare ocular tumors in 
male rats. Quantification of bicyclopyrone's carcinogenic potential is 
not required. A non-linear approach (i.e., RfD) will adequately account 
for all chronic toxicity, including carcinogenicity that could result 
from exposure to bicyclopyrone. Using EPA's non-linear approach, the 
1000X combined uncertainty factor used to calculate the cRfD/cPAD for 
the chronic dietary assessment, generates a dose which is 100,000-fold 
lower than the dose at which the ocular tumors were observed and is 
thus protective of their potential formation.
    2. Dietary exposure from drinking water. The Agency used screening 
level water exposure models in the dietary exposure analysis and risk 
assessment for bicyclopyrone in drinking water. These simulation models 
take into account data on the physical, chemical, and fate/transport 
characteristics of bicyclopyrone. 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.
    The Surface Water Concentration Calculator (SWCC) computer model 
was used to generate surface water Estimated Drinking Water 
Concentrations (EDWCs), while the Pesticide Root Zone Model for 
Groundwater (PRZM-GW) and the Screening Concentration in Ground Water 
(SCI-GROW) models were used to generate groundwater EDWCs.
    The maximum acute and chronic surface water EDWCs associated with 
bicyclopyrone use on corn were 2.87 and 0.857 [micro]g/L, respectively. 
For groundwater sources of drinking water, the maximum acute and 
chronic EDWCs of bicyclopyrone in shallow groundwater from PRZM-GW were 
3.76 and 3.23 [mu]g/L, respectively. EDWCs of 0.00376 ppm and 0.00323 
ppm were used in the acute and chronic analyses, respectively.
    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). Bicyclopyrone is not 
registered for any specific use patterns that would result in 
residential exposure.
    4. Cumulative effects from substances with a common mechanism of 
toxicity. Section 408(b)(2)(D)(v) of FFDCA requires that, when 
considering whether to establish, modify, or revoke a tolerance, the 
Agency consider ``available information'' concerning the cumulative 
effects of a particular pesticide's residues and ``other substances 
that have a common mechanism of toxicity.''
    There are marked differences among species in the ocular toxicity 
associated with bicyclopyrone's mechanism of toxicity, the inhibition 
of HPPD. Ocular effects following treatment with HPPD inhibitor 
herbicides are seen in the rat but not in the mouse. Monkeys also seem 
to be recalcitrant to the ocular toxicity induced by HPPD inhibition. 
One explanation for this species-specific response in ocular opacity 
may be related to species differences in the clearance of tyrosine. A 
metabolic pathway exists to remove tyrosine from the blood that 
involves the liver enzyme tyrosine aminotransferase (TAT). In contrast 
to rats where ocular toxicity is observed following exposure to HPPD-
inhibiting herbicides, mice and humans are unlikely to achieve the 
levels of plasma tyrosine necessary to produce ocular opacities because 
the activity of TAT in these species is much greater compared to rats.
    HPPD inhibitors (e.g., nitisinone) are used as an effective 
therapeutic agent to treat patients suffering from rare genetic 
diseases of tyrosine catabolism. Treatment starts in childhood but is 
often sustained throughout patient's lifetime. The human experience 
indicates that a therapeutic dose (1 mg/kg/day dose) of nitisinone has 
an excellent safety record in infants, children, and adults and that 
serious adverse health outcomes have not been observed in a population 
followed for approximately a decade. Rarely, ocular effects are seen in 
patients with high plasma tyrosine levels; however, these effects are 
transient and can be readily reversed upon adherence to a restricted 
protein diet. This observation indicates that an HPPD inhibitor in and 
of itself cannot easily overwhelm the tyrosine-clearance mechanism in 
humans.
    Therefore, exposures to environmental residues of HPPD-inhibiting 
herbicides are unlikely to result in the high blood levels of tyrosine 
and ocular toxicity in humans due to an efficient metabolic process to 
handle excess tyrosine. The EPA continues to study the complex 
relationships between elevated tyrosine levels and biological effects 
in various species. In the future, assessments of HPPD-inhibiting 
herbicides may consider more appropriate models and cross species 
extrapolation methods. EPA has not conducted cumulative risk assessment 
with other HPPD inhibitors.

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. The FQPA SF is retained at 10X for all exposure scenarios based 
on use of a LOAEL for the points of departure. The toxicology database 
for bicyclopyrone is adequate for characterizing toxicity and 
quantification of risk for food and non-food uses; however, a LOAEL 
from the New Zealand white rabbit developmental and chronic/
carcinogenicity rat toxicity studies has been used as the POD for 
several scenarios.
    There is no evidence of neurotoxicity in either of the 
neurotoxicity screening batteries, but there are effects in the chronic 
dog study. The level of concern is low, however, since the study and 
POD chosen for the chronic dietary exposure scenario is protective of 
these

[[Page 22653]]

effects. There is evidence of increased quantitative fetal 
susceptibility following in utero exposure in both rats and rabbits; 
however, these effects are well characterized and the selected 
endpoints are protective of the observed fetal effects. Lastly, there 
are no residual uncertainties in the exposure database.

E. Aggregate Risks and Determination of Safety

    EPA determines whether acute and chronic dietary pesticide 
exposures are safe by comparing aggregate exposure estimates to the 
acute PAD (aPAD) and chronic PAD (cPAD). For linear cancer risks, EPA 
calculates the lifetime probability of acquiring cancer given the 
estimated aggregate exposure. Short-, intermediate-, and chronic-term 
risks are evaluated by comparing the estimated aggregate food, water, 
and residential exposure to the appropriate PODs to ensure that an 
adequate MOE exists.
    Because there are no uses for bicyclopyrone that may result in 
residential exposures, the aggregate risk consists only of food and 
water.
    1. Acute risk. Using the exposure assumptions discussed in this 
unit for acute exposure, the acute dietary exposure from food and water 
to bicyclopyrone will occupy 2.9% of the aPAD for females 13-49 years 
old, the population group receiving the greatest exposure.
    2. Chronic risk. Using the exposure assumptions described in this 
unit for chronic exposure, EPA has concluded that chronic exposure to 
bicyclopyrone from food and water will utilize 91% of the cPAD for 
children 1-2 years old the population group receiving the greatest 
exposure. There are no residential uses for bicyclopyrone.
    3. Short-term risk. A short-term adverse effect was identified; 
however, bicyclopyrone is not registered for any use patterns that 
would result in short-term residential exposure. Short-term risk is 
assessed based on short-term residential exposure plus chronic dietary 
exposure. Because there is no short-term residential exposure and 
chronic dietary exposure has already been assessed under the 
appropriately protective cPAD (which is at least as protective as the 
POD used to assess short-term risk), no further assessment of short-
term risk is necessary, and EPA relies on the chronic dietary risk 
assessment for evaluating short-term risk for bicyclopyrone.
    4. Intermediate-term risk. An intermediate-term adverse effect was 
identified; however, bicyclopyrone 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 bicyclopyrone.
    5. Aggregate cancer risk for U.S. population. A non-linear approach 
(i.e., RfD) will adequately account for all chronic toxicity, including 
carcinogenicity that could result from exposure to bicyclopyrone.
    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 bicyclopyrone residues.

IV. Other Considerations

A. Analytical Enforcement Methodology

    Adequate enforcement methodology liquid chromatography-mass 
spectroscopy/mass spectroscopy (LC-MS/MS) methods for tolerance 
enforcement have been developed and independently validated. For all 
matrices and analytes, the level of quantification (LOQ), defined as 
the lowest spiking level where acceptable precision and accuracy data 
were obtained, was determined to be 0.01 ppm for each of the common 
moieties, SYN503780 and CSCD686480, for a combined LOQ of 0.02 ppm 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 bicyclopyrone.

C. Response to Comments

    Seven comments were received in response to the September 5, 2014 
notice of filing. Three of the comments were relevant to bicyclopyrone, 
the other four comments were relevant to other actions that were 
batched together with bicyclopryone in the same Federal Register 
document. The commenters noted that pesticides and bicyclopyrone pose a 
risk to pollinators. The agency has determined that bicyclopyrone is 
moderately to practically non-toxic to young adult honey bees (Apis 
mellifera) on an acute exposure basis.
    One comment was received in response to the February 11, 2015 
corrected notice of filing for the import tolerance on sugarcane 
petition. This comment was associated with an action that was batched 
together with bicyclopyrone in the same Federal Register document and 
was not relevant to bicyclopyrone.

D. Revisions to Petitioned-For Tolerances

    The proposed tolerance levels for most corn (field, pop, and sweet) 
raw agricultural commodities (RAC) differ slightly from those being set 
by the EPA. Although both the registrant and EPA have used the OECD 
(Organization for Economic Cooperation and Development) calculation 
procedures to obtain tolerance levels, EPA only included data from 
trials conducted according to the proposed label directions. The 
registrant proposed a tolerance level for sugarcane, cane below the 
method LOQ (0.01 ppm); the appropriate level is at the LOQ (0.02 ppm). 
EPA's tolerance levels for livestock meat byproducts were based on the 
highest tissue-to-feed ratio calculated from the dose closest to 
maximum dietary burdens. As residues are expected in both liver and 
kidney, the appropriate RAC is ``meat byproducts.'' Per EPA policy, 
tolerances are set for all ruminants, not just cattle. EPA made 
numerous changes in the commodity definitions and revisions to the 
tolerance expression in order to conform to current Agency policy.

[[Page 22654]]

V. Conclusion

    Therefore, tolerances are established for residues of the herbicide 
bicyclopyrone in or on corn, field, forage at 0.30 ppm; corn, field, 
grain at 0.02 ppm; corn, field, stover at 0.40 ppm; corn, pop, grain at 
0.02 ppm; corn, pop, stover at 0.40 ppm; corn, sweet, forage at 0.40 
ppm; corn, sweet, kernel plus cob with husks removed at 0.03 ppm; corn, 
sweet, stover at 0.70 ppm; sugarcane, cane at 0.02 ppm; cattle, meat 
byproducts at 1.5 ppm; goat, meat byproducts at 1.5 ppm; sheep, meat 
byproducts at 1.5 ppm; horse, meat byproducts at 1.5 ppm; and hog, meat 
byproducts at 0.15 ppm

VI. Statutory and Executive Order Reviews

    This action 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 action has been 
exempted from review under Executive Order 12866, this action 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 action 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 action 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 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 action. In addition, this 
action does not impose any enforceable duty or contain any unfunded 
mandate as described under Title II of the Unfunded Mandates Reform Act 
(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 (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: April 17, 2015.
William Jordan,
Acting Director, 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. Add Sec.  180.682 to subpart C to read as follows:


Sec.  180.682  Bicyclopyrone; tolerances for residues.

    (a) General. (1) Tolerances are established for residues of the 
herbicide bicyclopyrone (4-hydroxy-3-[[2-[(2-methoxyethoxy)methyl]-6-
(trifluoromethyl)-3-pyridinyl]carbonyl]bicyclo[3.2.1]oct-3-en-2-one), 
including its metabolites and degradates, in or on the commodities in 
the table below. Compliance with the tolerance levels specified below 
is to be determined by measuring only the sum of the common moieties 
SYN503780 (2-[(2-methoxyethoxy)methyl]-6-(trifluoromethyl)-3-
pyridinecarboxylic acid) and CSCD686480 (2-[(2-hydroxyethoxy)methyl]-6-
(trifluoromethyl)-3-pyridinecarboxylic acid), calculated as the 
stoichiometric equivalent of bicyclopyrone, in or on the commodities.

------------------------------------------------------------------------
                                                               Parts per
                          Commodity                              million
------------------------------------------------------------------------
Corn, field, forage..........................................       0.30
Corn, field, grain...........................................       0.02
Corn, field, stover..........................................       0.40
Corn, pop, grain.............................................       0.02
Corn, pop, stover............................................       0.40
Corn, sweet, forage..........................................       0.40
Corn, sweet, kernel plus cob with husks removed..............       0.03
Corn, sweet, stover..........................................       0.70
Sugarcane, cane \1\..........................................       0.02
Cattle, meat byproducts......................................       1.5
Goat, meat byproducts........................................       1.5
Sheep, meat byproducts.......................................       1.5
Horse, meat byproducts.......................................       1.5
Hog, meat byproducts.........................................       0.15
------------------------------------------------------------------------
\1\ There are no U.S. Registrations on Sugarcane as of March 13, 2015.

    (2) [Reserved].
    (b) [Reserved].

[FR Doc. 2015-09482 Filed 4-22-15; 8:45 am]
 BILLING CODE 6560-50-P



                                              22648              Federal Register / Vol. 80, No. 78 / Thursday, April 23, 2015 / Rules and Regulations

                                              incorporation by reference of the                       appropriate, and legally permissible                    Dated: February 27, 2015.
                                              FRAQMD rules described in the                           methods under Executive Order 12898                   Jared Blumenfeld,
                                              amendments to 40 CFR part 52 set forth                  (59 FR 7629, February 16, 1994).                      Regional Administrator, Region IX.
                                              below. The EPA has made, and will                          The SIP is not approved to apply on                  Part 52, chapter I, title 40 of the Code
                                              continue to make, these documents                       any Indian reservation land or in any                 of Federal Regulations is amended as
                                              available electronically through                        other area where EPA or an Indian tribe               follows:
                                              www.regulations.gov and in hard copy                    has demonstrated that a tribe has
                                              at the appropriate EPA office (see the                  jurisdiction. In those areas of Indian                PART 52—APPROVAL AND
                                              ADDRESSES section of this preamble for                  country, the rule does not have tribal                PROMULGATION OF
                                              more information).                                      implications and will not impose                      IMPLEMENTATION PLANS
                                                                                                      substantial direct costs on tribal
                                              IV. Statutory and Executive Order                       governments or preempt tribal law as                  ■ 1. The authority citation for part 52
                                              Reviews                                                 specified by Executive Order 13175 (65                continues to read as follows:
                                                 Under the Clean Air Act, the                         FR 67249, November 9, 2000).                              Authority: 42 U.S.C. 7401 et seq.
                                              Administrator is required to approve a                     The Congressional Review Act, 5
                                              SIP submission that complies with the                   U.S.C. 801 et seq., as added by the Small             Subpart F—California
                                              provisions of the Act and applicable                    Business Regulatory Enforcement
                                              Federal regulations. 42 U.S.C. 7410(k);                 Fairness Act of 1996, generally provides              ■ 2. Section 52.220, is amended by
                                              40 CFR 52.02(a). Thus, in reviewing SIP                 that before a rule may take effect, the               adding paragraphs (c)(442)(i)(E) and
                                              submissions, EPA’s role is to approve                   agency promulgating the rule must                     (c)(457) to read as follows:
                                              State choices, provided that they meet                  submit a rule report, which includes a                § 52.220    Identification of plan.
                                              the criteria of the Clean Air Act.                      copy of the rule, to each House of the
                                                                                                      Congress and to the Comptroller General               *      *    *     *     *
                                              Accordingly, this action merely                                                                                 (c) * * *
                                              approves State law as meeting Federal                   of the United States. EPA will submit a
                                                                                                                                                              (442) * * *
                                              requirements and does not impose                        report containing this action and other
                                                                                                                                                              (i) * * *
                                              additional requirements beyond those                    required information to the U.S. Senate,                (E) Feather River Air Quality
                                              imposed by State law. For that reason,                  the U.S. House of Representatives, and                Management District.
                                              this action:                                            the Comptroller General of the United                   (1) Rule 3.14, ‘‘Surface Preparation
                                                 • Is not a ‘‘significant regulatory                  States prior to publication of the rule in            and Clean-Up,’’ amended on August 1,
                                              action’’ subject to review by the Office                the Federal Register. A major rule                    2011.
                                              of Management and Budget under                          cannot take effect until 60 days after it               (2) Rule 3.20, ‘‘Wood Products
                                              Executive Order 12866 (58 FR 51735,                     is published in the Federal Register.                 Coating Operations,’’ amended on
                                              October 4, 1993);                                       This action is not a ‘‘major rule’’ as                August 1, 2011.
                                                 • does not impose an information                     defined by 5 U.S.C. 804(2).                             (3) Rule 3.21, ‘‘Industrial,
                                              collection burden under the provisions                     Under section 307(b)(1) of the Clean               Institutional, and Commercial Boilers,
                                              of the Paperwork Reduction Act (44                      Air Act, petitions for judicial review of             Steam Generators, and Process Heaters,’’
                                              U.S.C. 3501 et seq.);                                   this action must be filed in the United               adopted on June 5, 2006.
                                                 • is certified as not having a                       States Court of Appeals for the
                                                                                                                                                            *      *    *     *     *
                                              significant economic impact on a                        appropriate circuit by June 22, 2015.
                                                                                                                                                              (457) New and amended regulations
                                              substantial number of small entities                    Filing a petition for reconsideration by
                                                                                                                                                            for the following APCDs were submitted
                                              under the Regulatory Flexibility Act (5                 the Administrator of this final rule does
                                                                                                                                                            on November 6, 2014 by the Governor’s
                                              U.S.C. 601 et seq.);                                    not affect the finality of this action for
                                                                                                                                                            designee.
                                                 • does not contain any unfunded                      the purposes of judicial review nor does
                                                                                                                                                              (i) Incorporation by reference.
                                              mandate or significantly or uniquely                    it extend the time within which a                       (A) Feather River Air Quality
                                              affect small governments, as described                  petition for judicial review may be filed,            Management District.
                                              in the Unfunded Mandates Reform Act                     and shall not postpone the effectiveness                (1) Rule 10.9, ‘‘Rice Straw Emission
                                              of 1995 (Pub. L. 104–4);                                of such rule or action. Parties with                  Reduction Credits and Banking,’’
                                                 • does not have Federalism                           objections to this direct final rule are              amended on October 6, 2014.
                                              implications as specified in Executive                  encouraged to file a comment in                         (2) Rule 3.22, ‘‘Stationary Internal
                                              Order 13132 (64 FR 43255, August 10,                    response to the parallel notice of                    Combustion Engines,’’ amended on
                                              1999);                                                  proposed rulemaking for this action                   October 6, 2014.
                                                 • is not an economically significant                 published in the Proposed Rules section
                                                                                                                                                            [FR Doc. 2015–09409 Filed 4–22–15; 8:45 am]
                                              regulatory action based on health or                    of this Federal Register, rather than file
                                                                                                                                                            BILLING CODE 6560–50–P
                                              safety risks subject to Executive Order                 an immediate petition for judicial
                                              13045 (62 FR 19885, April 23, 1997);                    review of this direct final rule, so that
                                                 • is not a significant regulatory action             EPA can withdraw this direct final rule               ENVIRONMENTAL PROTECTION
                                              subject to Executive Order 13211 (66 FR                 and address the comment in the                        AGENCY
                                              28355, May 22, 2001);                                   proposed rulemaking. This action may
                                                 • is not subject to requirements of                  not be challenged later in proceedings to             40 CFR Part 180
                                              Section 12(d) of the National                           enforce its requirements (see section
                                              Technology Transfer and Advancement                     307(b)(2)).                                           [EPA–HQ–OPP–2014–0355; FRL–9926–66]
                                              Act of 1995 (15 U.S.C. 272 note) because
                                                                                                      List of Subjects in 40 CFR Part 52                    Bicyclopyrone; Pesticide Tolerances
rljohnson on DSK7TPTVN1PROD with RULES




                                              application of those requirements would
                                              be inconsistent with the Clean Air Act;                   Environmental protection, Air                       AGENCY:  Environmental Protection
                                              and                                                     pollution control, Incorporation by                   Agency (EPA).
                                                 • does not provide EPA with the                      reference, Nitrogen dioxide, Ozone,                   ACTION: Final rule.
                                              discretionary authority to address                      Particulate matter, Reporting and
                                              disproportionate human health or                        recordkeeping requirements, Volatile                  SUMMARY:  This regulation establishes
                                              environmental effects with practical,                   organic compounds.                                    tolerances for residues of bicyclopyrone


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                                                                 Federal Register / Vol. 80, No. 78 / Thursday, April 23, 2015 / Rules and Regulations                                        22649

                                              in or on field corn, forage; field corn,                B. How can I get electronic access to                 II. Summary of Petitioned-For
                                              grain; field corn, stover; popcorn, grain;              other related information?                            Tolerance
                                              popcorn, stover; sweet corn, forage;                                                                             In the Federal Register of September
                                              sweet corn, ears; sweet corn, stover;                     You may access a frequently updated
                                                                                                      electronic version of EPA’s tolerance                 5, 2014 (79 FR 53009) (FRL–9914–98),
                                              sugarcane, stalks; cattle, liver; goat, meat                                                                  EPA issued a document pursuant to
                                              byproducts; sheep, meat byproducts;                     regulations at 40 CFR part 180 through
                                                                                                      the Government Publishing Office’s e-                 FFDCA section 408(d)(3), 21 U.S.C.
                                              horse, meat byproducts; and hog, meat                                                                         346a(d)(3), announcing the filing of a
                                              byproducts. Syngenta requested these                    CFR site at http://www.ecfr.gov/cgi-bin/
                                                                                                      text-idx?&c=ecfr&tpl=/ecfrbrowse/                     pesticide petition (PP 3F8225) by
                                              tolerances under the Federal Food,                                                                            Syngenta Crop Protection, LLC., P.O.
                                              Drug, and Cosmetic Act (FFDCA).                         Title40/40tab_02.tpl
                                                                                                                                                            Box 18300, Greensboro, NC 27419. The
                                              DATES: This regulation is effective April               C. How can I file an objection or hearing             petition requested that 40 CFR part 180
                                              23, 2015. Objections and requests for                   request?                                              be amended by establishing tolerances
                                              hearings must be received on or before                                                                        for residues of the herbicide
                                              June 22, 2015, and must be filed in                       Under FFDCA section 408(g), 21
                                                                                                                                                            bicyclopyrone, herbicide, in or on field
                                              accordance with the instructions                        U.S.C. 346a, any person may file an
                                                                                                                                                            corn, forage at 0.4 parts per million
                                              provided in 40 CFR part 178 (see also                   objection to any aspect of this regulation
                                                                                                                                                            (ppm); field corn, grain at 0.02 ppm;
                                              Unit I.C. of the SUPPLEMENTARY                          and may also request a hearing on those
                                                                                                                                                            field corn, stover at 0.5 ppm; popcorn,
                                              INFORMATION).                                           objections. You must file your objection
                                                                                                                                                            grain at 0.02 ppm; popcorn, stover at 0.5
                                              ADDRESSES: The docket for this action,
                                                                                                      or request a hearing on this regulation
                                                                                                                                                            ppm; sweet corn, forage at 0.4 ppm;
                                              identified by docket identification (ID)                in accordance with the instructions
                                                                                                                                                            sweet corn, ears at 0.02 ppm; sweet
                                              number EPA–HQ–OPP–2014–0355, is                         provided in 40 CFR part 178. To ensure
                                                                                                                                                            corn, stover at 0.5 ppm; sugarcane,
                                              available at http://www.regulations.gov                 proper receipt by EPA, you must
                                                                                                                                                            stalks at 0.01 ppm; and cattle, liver at
                                              or at the Office of Pesticide Programs                  identify docket ID number EPA–HQ–
                                                                                                                                                            0.06 ppm. That document referenced a
                                              Regulatory Public Docket (OPP Docket)                   OPP–2014–0355 in the subject line on
                                                                                                                                                            summary of the petition prepared by
                                              in the Environmental Protection Agency                  the first page of your submission. All
                                                                                                                                                            Syngenta Crop Protection, LLC., the
                                              Docket Center (EPA/DC), West William                    objections and requests for a hearing
                                                                                                                                                            registrant, which is available in the
                                              Jefferson Clinton Bldg., Rm. 3334, 1301                 must be in writing, and must be
                                                                                                                                                            docket, http://www.regulations.gov. In
                                              Constitution Ave. NW., Washington, DC                   received by the Hearing Clerk on or
                                                                                                                                                            the Federal Register of February 11,
                                              20460–0001. The Public Reading Room                     before June 22, 2015. Addresses for mail
                                                                                                                                                            2015 (80 FR 7559) (FRL–9921–94), EPA
                                              is open from 8:30 a.m. to 4:30 p.m.,                    and hand delivery of objections and
                                                                                                                                                            published a corrected notice of filing for
                                              Monday through Friday, excluding legal                  hearing requests are provided in 40 CFR
                                                                                                                                                            the import tolerance on sugarcane
                                              holidays. The telephone number for the                  178.25(b).
                                                                                                                                                            petition. Comments were received for
                                              Public Reading Room is (202) 566–1744,                    In addition to filing an objection or               both items. EPA’s response to these
                                              and the telephone number for the OPP                    hearing request with the Hearing Clerk                comments is discussed in Unit IV.C.
                                              Docket is (703) 305–5805. Please review                 as described in 40 CFR part 178, please                  Based upon review of the data
                                              the visitor instructions and additional                 submit a copy of the filing (excluding                supporting the petition, EPA has revised
                                              information about the docket available                  any Confidential Business Information                 the proposed tolerances to corn, field,
                                              at http://www.epa.gov/dockets.                          (CBI)) for inclusion in the public docket.            forage at 0.30 ppm; corn, field, grain at
                                              FOR FURTHER INFORMATION CONTACT:                        Information not marked confidential                   0.02 ppm; corn, field, stover at 0.40
                                              Susan Lewis, Registration Division                      pursuant to 40 CFR part 2 may be                      ppm; corn, pop, grain at 0.02 ppm; corn,
                                              (7505P), Office of Pesticide Programs,                  disclosed publicly by EPA without prior               pop, stover at 0.40 ppm; corn, sweet,
                                              Environmental Protection Agency, 1200                   notice. Submit the non-CBI copy of your               forage at 0.40 ppm; corn, sweet, kernel
                                              Pennsylvania Ave. NW., Washington,                      objection or hearing request, identified              plus cob with husks removed at 0.03
                                              DC 20460–0001; main telephone                           by docket ID number EPA–HQ–OPP–                       ppm; corn, sweet, stover at 0.70 ppm;
                                              number: (703) 305–7090; email address:                  2014–0355, by one of the following                    sugarcane, cane at 0.02 ppm; cattle,
                                              RDFRNotices@epa.gov.                                    methods:                                              meat byproducts at 1.5 ppm; goat, meat
                                              SUPPLEMENTARY INFORMATION:                                • Federal eRulemaking Portal: http://               byproducts at 1.5 ppm; sheep, meat
                                              I. General Information                                  www.regulations.gov. Follow the online                byproducts at 1.5 ppm; horse, meat
                                                                                                      instructions for submitting comments.                 byproducts at 1.5 ppm; and hog, meat
                                              A. Does this action apply to me?                        Do not submit electronically any                      byproducts at 0.15 ppm. The reasons for
                                                 You may be potentially affected by                   information you consider to be CBI or                 these changes are explained in Unit
                                              this action if you are an agricultural                  other information whose disclosure is                 IV.C.
                                              producer, food manufacturer, or                         restricted by statute.                                III. Aggregate Risk Assessment and
                                              pesticide manufacturer. The following                     • Mail: OPP Docket, Environmental                   Determination of Safety
                                              list of North American Industrial                       Protection Agency Docket Center (EPA/
                                              Classification System (NAICS) codes is                                                                           Section 408(b)(2)(A)(i) of FFDCA
                                                                                                      DC), (28221T), 1200 Pennsylvania Ave.
                                              not intended to be exhaustive, but rather                                                                     allows EPA to establish a tolerance (the
                                                                                                      NW., Washington, DC 20460–0001.
                                              provides a guide to help readers                                                                              legal limit for a pesticide chemical
                                                                                                        • Hand Delivery: To make special                    residue in or on a food) only if EPA
                                              determine whether this document                         arrangements for hand delivery or
                                              applies to them. Potentially affected                                                                         determines that the tolerance is ‘‘safe.’’
                                                                                                      delivery of boxed information, please                 Section 408(b)(2)(A)(ii) of FFDCA
                                              entities may include:                                   follow the instructions at http://
rljohnson on DSK7TPTVN1PROD with RULES




                                                 • Crop production (NAICS code 111).                                                                        defines ‘‘safe’’ to mean that ‘‘there is a
                                                 • Animal production (NAICS code                      www.epa.gov/dockets/contacts.html.                    reasonable certainty that no harm will
                                              112).                                                     Additional instructions on                          result from aggregate exposure to the
                                                 • Food manufacturing (NAICS code                     commenting or visiting the docket,                    pesticide chemical residue, including
                                              311).                                                   along with more information about                     all anticipated dietary exposures and all
                                                 • Pesticide manufacturing (NAICS                     dockets generally, is available at                    other exposures for which there is
                                              code 32532).                                            http://www.epa.gov/dockets.                           reliable information.’’ This includes


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                                              22650              Federal Register / Vol. 80, No. 78 / Thursday, April 23, 2015 / Rules and Regulations

                                              exposure through drinking water and in                  corneal opacity and light sensitivity                 increased thyroid follicular cell
                                              residential settings, but does not include              were observed.                                        hypertrophy, (3) increased liver weights
                                              occupational exposure. Section                             Across the database, there were                    associated, and (4) increased
                                              408(b)(2)(C) of FFDCA requires EPA to                   decreased absolute body weights (the                  hepatocellular centrilobular
                                              give special consideration to exposure                  only finding in mice for any duration)                hypertrophy and increased hepatic
                                              of infants and children to the pesticide                and food consumption. There were no                   uridine diphosphate glucuronyl
                                              chemical residue in establishing a                      signs of immunotoxicity or                            transferase (UDPGT) activities.
                                              tolerance and to ‘‘ensure that there is a               neurotoxicity in rodents.                                Bicyclopyrone is categorized as
                                              reasonable certainty that no harm will                     Bicyclopyrone treatment resulted in                having low acute lethality via all routes
                                              result to infants and children from                     developmental toxicity in both rats and               of administration (Categories III and IV).
                                              aggregate exposure to the pesticide                     rabbits, and there was an increased                   Bicyclopyrone produces minimal eye
                                              chemical residue . . .’’                                quantitative fetal susceptibility in both             irritation and mild acute inhalation
                                                Consistent with FFDCA section                         species tested. In rats, maternal toxicity            toxicity (Toxicity Category IV).
                                              408(b)(2)(D), and the factors specified in              was not observed up to 1000 mg/kg/day.                   Specific information on the studies
                                              FFDCA section 408(b)(2)(D), EPA has                     Fetal effects occurred at all doses (≥100             received and the nature of the adverse
                                              reviewed the available scientific data                  mg/kg/day), and manifested as skeletal                effects caused by bicyclopyrone as well
                                              and other relevant information in                       variations (increased incidences of full              as the lowest-observed-adverse-effect-
                                              support of this action. EPA has                         or rudimentary supernumerary ribs,                    level (LOAEL) from the toxicity studies
                                              sufficient data to assess the hazards of                pelvic girdle malpositioned caudal,                   can be found at http://
                                              and to make a determination on                          costal cartilage 11 long). In New                     www.regulations.gov in document titled
                                              aggregate exposure for bicyclopyrone                    Zealand White rabbits, maternal effects               ‘‘Bicyclopyrone: Human Health Risk
                                              including exposure resulting from the                   consisted of mortality/moribundity in                 Assessment for the Section 3
                                              tolerances established by this action.                  conjunction with minimal food                         Registration Action on Corn and the
                                              EPA’s assessment of exposures and risks                 consumption at 200 mg/kg/day. Fetal                   Establishment of Permanent Tolerances
                                              associated with bicyclopyrone follows.                  effects once again occurred at all doses              for Residues in/on Corn and Imported
                                                                                                      tested (≥10 mg/kg/day). The sole fetal                Sugarcane’’ at pp. 30–37 in docket ID
                                              A. Toxicological Profile                                effect at the lowest dose tested was the              number EPA–HQ–OPP–2014–0355.
                                                 EPA has evaluated the available                      appearance of the 27th presacral
                                              toxicity data and considered its validity,                                                                    B. Toxicological Points of Departure/
                                                                                                      vertebrae. There were two studies in
                                              completeness, and reliability as well as                                                                      Levels of Concern
                                                                                                      Himalayan rabbits. In both studies,
                                              the relationship of the results of the                  maternal effects consisted of                            Once a pesticide’s toxicological
                                              studies to human risk. EPA has also                     macroscopic findings in the stomach                   profile is determined, EPA identifies
                                              considered available information                        wall and an increased incidence of post-              toxicological points of departure (POD)
                                              concerning the variability of the                       implantation loss at the 250 mg/kg/day                and levels of concern to use in
                                              sensitivities of major identifiable                     dose level. In the first study, fetal effects         evaluating the risk posed by human
                                              subgroups of consumers, including                       occurred starting at 50 mg/kg/day and                 exposure to the pesticide. For hazards
                                              infants and children.                                   consisted of skeletal variations                      that have a threshold below which there
                                                 The effects of bicyclopyrone are                     (increased incidence of the 27th                      is no appreciable risk, the toxicological
                                              indicative of inhibition of                             prepelvic vertebra and malpositioned                  POD is used as the basis for derivation
                                              4-hydroxyphenylpyruvate dioxygenase                     pelvic girdle). In the second study, the              of reference values for risk assessment.
                                              (HPPD). Plasma tyrosine levels were                     increased quantitative fetal                          PODs are developed based on a careful
                                              consistently elevated in rats, rabbits,                 susceptibility was not observed due to                analysis of the doses in each
                                              and dogs (levels in mice were not                       a change in the dose selection. Fetal                 toxicological study to determine the
                                              tested). Consistent with these elevated                 effects occurred at 250 mg/kg/day and                 dose at which no adverse effects are
                                              tyrosine levels, ocular effects (corneal                consisted of external, visceral, and                  observed (the NOAEL) and the lowest
                                              opacity, keratitis) were observed for                   skeletal abnormalities, and visceral                  dose at which adverse effects of concern
                                              subchronic and chronic durations                        variations, skeletal, bone and cartilage              are identified (the LOAEL). Uncertainty/
                                              through the oral and dermal routes in                   variations. In total, the effects in these            safety factors are used in conjunction
                                              rats, which was the most sensitive                      studies are consistent with effects of                with the POD to calculate a safe
                                              species tested (minor instances in dogs).               other chemicals in this class.                        exposure level—generally referred to as
                                              There were also increased incidences of                    In the two-generation reproductive                 a population-adjusted dose (PAD) or a
                                              thyroid follicular hyperplasia and a                    study in rats, ocular toxicity occurred in            reference dose (RfD)—and a safe margin
                                              chronic progressive nephropathy. While                  parents and offspring and there was no                of exposure (MOE). For non-threshold
                                              minor instances of ocular effects were                  increased offspring susceptibility of any             risks, the Agency assumes that any
                                              observed in dogs, different toxicological               kind. Reproductive effects included                   amount of exposure will lead to some
                                              effects were generally observed. For                    changes in sperm parameters, and a                    degree of risk. Thus, the Agency
                                              subchronic oral exposure, clinical signs                decrease of precoital interval.                       estimates risk in terms of the probability
                                              (moderate hypoactivity, slightly                           To determine the mechanism for the                 of an occurrence of the adverse effect
                                              unsteady gait, increased heart rate,                    thyroid hyperplasia observed in the                   expected in a lifetime. For more
                                              regurgitation, and vomiting) were                       chronic/carcinogenicity study in rats,                information on the general principles
                                              observed, and clinical pathological                     two mode-of-action studies were                       EPA uses in risk characterization and a
                                              indicators of toxicity occurred in the eye              performed. In the in vitro study,                     complete description of the risk
rljohnson on DSK7TPTVN1PROD with RULES




                                              and the thymus. Following chronic                       bicyclopyrone was negative for thyroid                assessment process, see http://
                                              exposure, there was a dose-dependent                    peroxidase inhibition. The results from               www.epa.gov/pesticides/factsheets/
                                              increase in chromatolysis and swelling                  the in vivo study suggested that the                  riskassess.htm.
                                              of selected neurons in the dorsal root                  observed thyroid hyperplasia was the                     A summary of the toxicological
                                              ganglia, and degeneration of nerve fibers               result of increased metabolism of                     endpoints for bicyclopyrone used for
                                              in the spinal nerve roots in both sexes.                thyroid hormones indicated by (1)                     human risk assessment is shown in
                                              In one female dog at the high dose,                     decreased plasma T3 and T4 levels, (2)                Table 1 of this unit.


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                                                                 Federal Register / Vol. 80, No. 78 / Thursday, April 23, 2015 / Rules and Regulations                                        22651

                                               TABLE 1—SUMMARY OF TOXICOLOGICAL DOSES AND ENDPOINTS FOR BICYCLOPYRONE FOR USE IN HUMAN HEALTH RISK
                                                                                          ASSESSMENT
                                                                                             Point of
                                                                                          departure and          RfD, PAD, LOC for
                                                     Exposure/scenario                                                                                      Study and toxicological effects
                                                                                           uncertainty/           risk assessment
                                                                                          safety factors

                                              Acute dietary (Females 13–49           LOAEL = 10 mg/kg/          Acute RfD = 0.01           Prenatal Developmental Study (New Zealand White Rabbits).
                                                years of age).                         day.                       mg/kg/day.               Developmental LOAEL = 10 mg/kg/day based on skeletal vari-
                                                                                     UFA = 10x                  aPAD = 0.01 mg/kg/           ations (the appearance of the 27th presacral vertebrae).
                                                                                     UFH = 10x                    day
                                                                                     FQPA SF/UFL = 10x
                                              Acute dietary (General popu-           No endpoint attrib-
                                                lation including infants and           utable to a single
                                                children).                             dose and appro-
                                                                                       priate for the U.S.
                                                                                       general population
                                                                                       was seen in the
                                                                                       bicyclopyrone toxi-
                                                                                       cological data-
                                                                                       base; therefore, an
                                                                                       acute dietary point
                                                                                       of departure for
                                                                                       the general U.S.
                                                                                       population was not
                                                                                       established.
                                              Chronic dietary (All populations)      LOAEL= 10 mg/kg/           Chronic RfD =        Carcinogenicity Study (rat).
                                                                                       day.                       0.00028 mg/kg/day. LOAEL = 0.28/0.35 mg/kg/day (Male/Female) based on a dose
                                                                                     UFA = 10x                  cPAD = 0.00028 mg/     dependent increase in the incidence of opaque eyes and cor-
                                                                                     UFH = 10x                    kg/day               neal damage in both sexes compared to controls, an in-
                                                                                     FQPA SF/UFL = 10x                                 creased incidence of thyroid follicular hyperplasia in males,
                                                                                                                                       and an increased incidence of chronic progressive
                                                                                                                                       nephropathy in the kidneys of males.
                                              Dermal Short- (1–30 days) and          LOAEL = 10 mg/kg/          LOC for MOE =        Prenatal Developmental Study (New Zealand White Rabbits).
                                                Intermediate-Term (1–6                 day.                       1000.              Developmental LOAEL = 10 mg/kg/day based on skeletal vari-
                                                months).                             DAF = 20.44%                                      ations (the appearance of the 27th presacral vertebrae).
                                                                                     UFA = 10x
                                                                                     UFH = 10x
                                                                                     FQPA SF/UFL = 10x
                                              Inhalation Short- (1–30 days)          LOAEL = 10 mg/kg/          LOC for MOE =              Prenatal Developmental Study (New Zealand White Rabbits).
                                                and Intermediate-Term (1–6             day.                       1000.                    Developmental LOAEL = 10 mg/kg/day based on skeletal vari-
                                                months).                             UFA = 10x                                               ations (the appearance of the 27th presacral vertebrae.
                                                                                     UFH = 10x
                                                                                     FQPA SF/UFL = 10x
                                              Cancer (Oral, dermal, inhala-          Classification: ‘‘Sug-
                                                tion).                                 gestive evidence
                                                                                       of cancer’’ based
                                                                                       on the presence of
                                                                                       rare ocular tumors
                                                                                       in male rats.
                                                                                       Quantification of
                                                                                       bicyclopyrone’s
                                                                                       carcinogenic po-
                                                                                       tential is not re-
                                                                                       quired. A non-lin-
                                                                                       ear approach (i.e.,
                                                                                       RfD) will ade-
                                                                                       quately account for
                                                                                       all chronic toxicity,
                                                                                       including carcino-
                                                                                       genicity that could
                                                                                       result from expo-
                                                                                       sure to
                                                                                       bicyclopyrone.
                                                 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. PAD = population adjusted dose (a = acute, c = chronic). RfD = reference dose. UFA = ex-
                                              trapolation from animal to human (interspecies). UFH = potential variation in sensitivity among members of the human population (intraspecies).
rljohnson on DSK7TPTVN1PROD with RULES




                                              UFL = use of a LOAEL to extrapolate a NOAEL.


                                              C. Exposure Assessment                                  exposure to bicyclopyrone, EPA                        dietary exposures from bicyclopyrone in
                                                                                                      considered exposure under the                         food as follows:
                                                1. Dietary exposure from food and                     petitioned-for tolerances. EPA assessed                 i. Acute exposure. Quantitative acute
                                              feed uses. In evaluating dietary                                                                              dietary exposure and risk assessments


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                                              22652              Federal Register / Vol. 80, No. 78 / Thursday, April 23, 2015 / Rules and Regulations

                                              are performed for a food-use pesticide,                 were used to generate groundwater                     children, and adults and that serious
                                              if a toxicological study has indicated the              EDWCs.                                                adverse health outcomes have not been
                                              possibility of an effect of concern                        The maximum acute and chronic                      observed in a population followed for
                                              occurring as a result of a 1-day or single              surface water EDWCs associated with                   approximately a decade. Rarely, ocular
                                              exposure. Such effects were identified                  bicyclopyrone use on corn were 2.87                   effects are seen in patients with high
                                              for bicyclopyrone. In estimating acute                  and 0.857 mg/L, respectively. For                     plasma tyrosine levels; however, these
                                              dietary exposure, EPA used food                         groundwater sources of drinking water,                effects are transient and can be readily
                                              consumption information from the                        the maximum acute and chronic EDWCs                   reversed upon adherence to a restricted
                                              United States Department of Agriculture                 of bicyclopyrone in shallow                           protein diet. This observation indicates
                                              (USDA) 2003–2008 Nationwide                             groundwater from PRZM–GW were 3.76                    that an HPPD inhibitor in and of itself
                                              Continuing Surveys of Food Intake by                    and 3.23 mg/L, respectively. EDWCs of                 cannot easily overwhelm the tyrosine-
                                              Individuals (CSFII). The acute dietary                  0.00376 ppm and 0.00323 ppm were                      clearance mechanism in humans.
                                              analysis was conducted for                              used in the acute and chronic analyses,                  Therefore, exposures to
                                              bicyclopyrone assuming tolerance level                  respectively.                                         environmental residues of HPPD-
                                              residues, default processing factors, and                  3. From non-dietary exposure. The                  inhibiting herbicides are unlikely to
                                              100% crop treated (CT) information.                     term ‘‘residential exposure’’ is used in              result in the high blood levels of
                                                 ii. Chronic exposure. In conducting                  this document to refer to non-                        tyrosine and ocular toxicity in humans
                                              the chronic dietary exposure assessment                 occupational, non-dietary exposure                    due to an efficient metabolic process to
                                              EPA used the food consumption data                      (e.g., for lawn and garden pest control,              handle excess tyrosine. The EPA
                                              from the USDA 2003–2008 CSFII. The                      indoor pest control, termiticides, and                continues to study the complex
                                              chronic dietary exposure assessment                     flea and tick control on pets).                       relationships between elevated tyrosine
                                              was conducted for bicyclopyrone                         Bicyclopyrone is not registered for any               levels and biological effects in various
                                              assuming average field trial residues for               specific use patterns that would result               species. In the future, assessments of
                                              crops, tolerance-level residues for                     in residential exposure.                              HPPD-inhibiting herbicides may
                                              livestock commodities, default                             4. Cumulative effects from substances              consider more appropriate models and
                                              processing factors, and 100% CT                         with a common mechanism of toxicity.                  cross species extrapolation methods.
                                              information.                                            Section 408(b)(2)(D)(v) of FFDCA                      EPA has not conducted cumulative risk
                                                 iii. Cancer. Based on the data                       requires that, when considering whether               assessment with other HPPD inhibitors.
                                              summarized in Unit III.A., EPA has                      to establish, modify, or revoke a
                                              concluded that bicyclopyrone should be                  tolerance, the Agency consider                        D. Safety Factor for Infants and
                                              classified as ‘‘suggestive evidence of                  ‘‘available information’’ concerning the              Children
                                              cancer’’ based on the presence of rare                  cumulative effects of a particular                       1. In general. Section 408(b)(2)(C) of
                                              ocular tumors in male rats.                             pesticide’s residues and ‘‘other                      FFDCA provides that EPA shall apply
                                              Quantification of bicyclopyrone’s                       substances that have a common                         an additional tenfold (10X) margin of
                                              carcinogenic potential is not required. A               mechanism of toxicity.’’                              safety for infants and children in the
                                              non-linear approach (i.e., RfD) will                       There are marked differences among                 case of threshold effects to account for
                                              adequately account for all chronic                      species in the ocular toxicity associated             prenatal and postnatal toxicity and the
                                              toxicity, including carcinogenicity that                with bicyclopyrone’s mechanism of                     completeness of the database on toxicity
                                              could result from exposure to                           toxicity, the inhibition of HPPD. Ocular              and exposure unless EPA determines
                                              bicyclopyrone. Using EPA’s non-linear                   effects following treatment with HPPD                 based on reliable data that a different
                                              approach, the 1000X combined                            inhibitor herbicides are seen in the rat              margin of safety will be safe for infants
                                              uncertainty factor used to calculate the                but not in the mouse. Monkeys also                    and children. This additional margin of
                                              cRfD/cPAD for the chronic dietary                       seem to be recalcitrant to the ocular                 safety is commonly referred to as the
                                              assessment, generates a dose which is                   toxicity induced by HPPD inhibition.                  FQPA Safety Factor (SF). In applying
                                              100,000-fold lower than the dose at                     One explanation for this species-specific             this provision, EPA either retains the
                                              which the ocular tumors were observed                   response in ocular opacity may be                     default value of 10X, or uses a different
                                              and is thus protective of their potential               related to species differences in the                 additional safety factor when reliable
                                              formation.                                              clearance of tyrosine. A metabolic                    data available to EPA support the choice
                                                 2. Dietary exposure from drinking                    pathway exists to remove tyrosine from                of a different factor.
                                              water. The Agency used screening level                  the blood that involves the liver enzyme                 2. The FQPA SF is retained at 10X for
                                              water exposure models in the dietary                    tyrosine aminotransferase (TAT). In                   all exposure scenarios based on use of
                                              exposure analysis and risk assessment                   contrast to rats where ocular toxicity is             a LOAEL for the points of departure.
                                              for bicyclopyrone in drinking water.                    observed following exposure to HPPD-                  The toxicology database for
                                              These simulation models take into                       inhibiting herbicides, mice and humans                bicyclopyrone is adequate for
                                              account data on the physical, chemical,                 are unlikely to achieve the levels of                 characterizing toxicity and
                                              and fate/transport characteristics of                   plasma tyrosine necessary to produce                  quantification of risk for food and non-
                                              bicyclopyrone. Further information                      ocular opacities because the activity of              food uses; however, a LOAEL from the
                                              regarding EPA drinking water models                     TAT in these species is much greater                  New Zealand white rabbit
                                              used in pesticide exposure assessment                   compared to rats.                                     developmental and chronic/
                                              can be found at http://www.epa.gov/                        HPPD inhibitors (e.g., nitisinone) are             carcinogenicity rat toxicity studies has
                                              oppefed1/models/water/index.htm.                        used as an effective therapeutic agent to             been used as the POD for several
                                                 The Surface Water Concentration                      treat patients suffering from rare genetic            scenarios.
rljohnson on DSK7TPTVN1PROD with RULES




                                              Calculator (SWCC) computer model was                    diseases of tyrosine catabolism.                         There is no evidence of neurotoxicity
                                              used to generate surface water Estimated                Treatment starts in childhood but is                  in either of the neurotoxicity screening
                                              Drinking Water Concentrations                           often sustained throughout patient’s                  batteries, but there are effects in the
                                              (EDWCs), while the Pesticide Root Zone                  lifetime. The human experience                        chronic dog study. The level of concern
                                              Model for Groundwater (PRZM–GW)                         indicates that a therapeutic dose (1 mg/              is low, however, since the study and
                                              and the Screening Concentration in                      kg/day dose) of nitisinone has an                     POD chosen for the chronic dietary
                                              Ground Water (SCI–GROW) models                          excellent safety record in infants,                   exposure scenario is protective of these


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                                                                 Federal Register / Vol. 80, No. 78 / Thursday, April 23, 2015 / Rules and Regulations                                         22653

                                              effects. There is evidence of increased                 residential exposure. Intermediate-term               Organization food standards program,
                                              quantitative fetal susceptibility                       risk is assessed based on intermediate-               and it is recognized as an international
                                              following in utero exposure in both rats                term residential exposure plus chronic                food safety standards-setting
                                              and rabbits; however, these effects are                 dietary exposure. Because there is no                 organization in trade agreements to
                                              well characterized and the selected                     intermediate-term residential exposure                which the United States is a party. EPA
                                              endpoints are protective of the observed                and chronic dietary exposure has                      may establish a tolerance that is
                                              fetal effects. Lastly, there are no residual            already been assessed under the                       different from a Codex MRL; however,
                                              uncertainties in the exposure database.                 appropriately protective cPAD (which is               FFDCA section 408(b)(4) requires that
                                              E. Aggregate Risks and Determination of                 at least as protective as the POD used to             EPA explain the reasons for departing
                                              Safety                                                  assess intermediate-term risk), no                    from the Codex level. The Codex has not
                                                                                                      further assessment of intermediate-term               established a MRL for bicyclopyrone.
                                                 EPA determines whether acute and                     risk is necessary, and EPA relies on the
                                              chronic dietary pesticide exposures are                 chronic dietary risk assessment for                   C. Response to Comments
                                              safe by comparing aggregate exposure                    evaluating intermediate-term risk for
                                              estimates to the acute PAD (aPAD) and                                                                           Seven comments were received in
                                                                                                      bicyclopyrone.                                        response to the September 5, 2014
                                              chronic PAD (cPAD). For linear cancer                      5. Aggregate cancer risk for U.S.
                                              risks, EPA calculates the lifetime                                                                            notice of filing. Three of the comments
                                                                                                      population. A non-linear approach (i.e.,              were relevant to bicyclopyrone, the
                                              probability of acquiring cancer given the               RfD) will adequately account for all
                                              estimated aggregate exposure. Short-,                                                                         other four comments were relevant to
                                                                                                      chronic toxicity, including
                                              intermediate-, and chronic-term risks                                                                         other actions that were batched together
                                                                                                      carcinogenicity that could result from
                                              are evaluated by comparing the                                                                                with bicyclopryone in the same Federal
                                                                                                      exposure to bicyclopyrone.
                                              estimated aggregate food, water, and                                                                          Register document. The commenters
                                                                                                         6. Determination of safety. Based on
                                              residential exposure to the appropriate                                                                       noted that pesticides and bicyclopyrone
                                                                                                      these risk assessments, EPA concludes
                                              PODs to ensure that an adequate MOE                                                                           pose a risk to pollinators. The agency
                                                                                                      that there is a reasonable certainty that
                                              exists.                                                                                                       has determined that bicyclopyrone is
                                                                                                      no harm will result to the general
                                                 Because there are no uses for                                                                              moderately to practically non-toxic to
                                                                                                      population, or to infants and children
                                              bicyclopyrone that may result in                        from aggregate exposure to                            young adult honey bees (Apis mellifera)
                                              residential exposures, the aggregate risk               bicyclopyrone residues.                               on an acute exposure basis.
                                              consists only of food and water.                                                                                One comment was received in
                                                 1. Acute risk. Using the exposure                    IV. Other Considerations                              response to the February 11, 2015
                                              assumptions discussed in this unit for                                                                        corrected notice of filing for the import
                                                                                                      A. Analytical Enforcement Methodology
                                              acute exposure, the acute dietary                                                                             tolerance on sugarcane petition. This
                                              exposure from food and water to                            Adequate enforcement methodology
                                                                                                                                                            comment was associated with an action
                                              bicyclopyrone will occupy 2.9% of the                   liquid chromatography-mass
                                                                                                      spectroscopy/mass spectroscopy (LC–                   that was batched together with
                                              aPAD for females 13–49 years old, the                                                                         bicyclopyrone in the same Federal
                                              population group receiving the greatest                 MS/MS) methods for tolerance
                                                                                                      enforcement have been developed and                   Register document and was not relevant
                                              exposure.                                                                                                     to bicyclopyrone.
                                                 2. Chronic risk. Using the exposure                  independently validated. For all
                                              assumptions described in this unit for                  matrices and analytes, the level of                   D. Revisions to Petitioned-For
                                              chronic exposure, EPA has concluded                     quantification (LOQ), defined as the                  Tolerances
                                              that chronic exposure to bicyclopyrone                  lowest spiking level where acceptable
                                              from food and water will utilize 91% of                 precision and accuracy data were                         The proposed tolerance levels for
                                              the cPAD for children 1–2 years old the                 obtained, was determined to be 0.01                   most corn (field, pop, and sweet) raw
                                              population group receiving the greatest                 ppm for each of the common moieties,                  agricultural commodities (RAC) differ
                                              exposure. There are no residential uses                 SYN503780 and CSCD686480, for a                       slightly from those being set by the EPA.
                                              for bicyclopyrone.                                      combined LOQ of 0.02 ppm is available                 Although both the registrant and EPA
                                                 3. Short-term risk. A short-term                     to enforce the tolerance expression.                  have used the OECD (Organization for
                                              adverse effect was identified; however,                    The method may be requested from:                  Economic Cooperation and
                                              bicyclopyrone is not registered for any                 Chief, Analytical Chemistry Branch,                   Development) calculation procedures to
                                              use patterns that would result in short-                Environmental Science Center, 701                     obtain tolerance levels, EPA only
                                              term residential exposure. Short-term                   Mapes Rd., Ft. Meade, MD 20755–5350;                  included data from trials conducted
                                              risk is assessed based on short-term                    telephone number: (410) 305–2905;                     according to the proposed label
                                              residential exposure plus chronic                       email address: residuemethods@                        directions. The registrant proposed a
                                              dietary exposure. Because there is no                   epa.gov.                                              tolerance level for sugarcane, cane
                                              short-term residential exposure and                                                                           below the method LOQ (0.01 ppm); the
                                                                                                      B. International Residue Limits                       appropriate level is at the LOQ (0.02
                                              chronic dietary exposure has already
                                              been assessed under the appropriately                     In making its tolerance decisions, EPA              ppm). EPA’s tolerance levels for
                                              protective cPAD (which is at least as                   seeks to harmonize U.S. tolerances with               livestock meat byproducts were based
                                              protective as the POD used to assess                    international standards whenever                      on the highest tissue-to-feed ratio
                                              short-term risk), no further assessment                 possible, consistent with U.S. food                   calculated from the dose closest to
                                              of short-term risk is necessary, and EPA                safety standards and agricultural                     maximum dietary burdens. As residues
                                              relies on the chronic dietary risk                      practices. EPA considers the                          are expected in both liver and kidney,
rljohnson on DSK7TPTVN1PROD with RULES




                                              assessment for evaluating short-term                    international maximum residue limits                  the appropriate RAC is ‘‘meat
                                              risk for bicyclopyrone.                                 (MRLs) established by the Codex                       byproducts.’’ Per EPA policy, tolerances
                                                 4. Intermediate-term risk. An                        Alimentarius Commission (Codex), as                   are set for all ruminants, not just cattle.
                                              intermediate-term adverse effect was                    required by FFDCA section 408(b)(4).                  EPA made numerous changes in the
                                              identified; however, bicyclopyrone is                   The Codex Alimentarius is a joint                     commodity definitions and revisions to
                                              not registered for any use patterns that                United Nations Food and Agriculture                   the tolerance expression in order to
                                              would result in intermediate-term                       Organization/World Health                             conform to current Agency policy.


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                                              22654              Federal Register / Vol. 80, No. 78 / Thursday, April 23, 2015 / Rules and Regulations

                                              V. Conclusion                                           have a substantial direct effect on States            pyridinyl]carbonyl]bicyclo[3.2.1]oct-3-
                                                Therefore, tolerances are established                 or tribal governments, on the                         en-2-one), including its metabolites and
                                              for residues of the herbicide                           relationship between the national                     degradates, in or on the commodities in
                                              bicyclopyrone in or on corn, field,                     government and the States or tribal                   the table below. Compliance with the
                                              forage at 0.30 ppm; corn, field, grain at               governments, or on the distribution of                tolerance levels specified below is to be
                                              0.02 ppm; corn, field, stover at 0.40                   power and responsibilities among the                  determined by measuring only the sum
                                              ppm; corn, pop, grain at 0.02 ppm; corn,                various levels of government or between               of the common moieties SYN503780 (2-
                                              pop, stover at 0.40 ppm; corn, sweet,                   the Federal Government and Indian                     [(2-methoxyethoxy)methyl]-6-
                                              forage at 0.40 ppm; corn, sweet, kernel                 tribes. Thus, the Agency has determined               (trifluoromethyl)-3-pyridinecarboxylic
                                              plus cob with husks removed at 0.03                     that Executive Order 13132, entitled                  acid) and CSCD686480 (2-[(2-
                                              ppm; corn, sweet, stover at 0.70 ppm;                   ‘‘Federalism’’ (64 FR 43255, August 10,               hydroxyethoxy)methyl]-6-
                                              sugarcane, cane at 0.02 ppm; cattle,                    1999) and Executive Order 13175,                      (trifluoromethyl)-3-pyridinecarboxylic
                                              meat byproducts at 1.5 ppm; goat, meat                  entitled ‘‘Consultation and Coordination              acid), calculated as the stoichiometric
                                              byproducts at 1.5 ppm; sheep, meat                      with Indian Tribal Governments’’ (65 FR               equivalent of bicyclopyrone, in or on
                                              byproducts at 1.5 ppm; horse, meat                      67249, November 9, 2000) do not apply                 the commodities.
                                              byproducts at 1.5 ppm; and hog, meat                    to this action. In addition, this action
                                                                                                      does not impose any enforceable duty or                                                                 Parts per
                                              byproducts at 0.15 ppm                                                                                                        Commodity                          million
                                                                                                      contain any unfunded mandate as
                                              VI. Statutory and Executive Order                       described under Title II of the Unfunded               Corn, field, forage .........................         0.30
                                              Reviews                                                 Mandates Reform Act (UMRA) (2 U.S.C.                   Corn, field, grain ...........................        0.02
                                                 This action establishes tolerances                   1501 et seq.).                                         Corn, field, stover .........................         0.40
                                              under FFDCA section 408(d) in                              This action does not involve any                    Corn, pop, grain ............................         0.02
                                              response to a petition submitted to the                 technical standards that would require                 Corn, pop, stover ..........................          0.40
                                              Agency. The Office of Management and                    Agency consideration of voluntary                      Corn, sweet, forage ......................            0.40
                                              Budget (OMB) has exempted these types                   consensus standards pursuant to section                Corn, sweet, kernel plus cob with
                                                                                                      12(d) of the National Technology                         husks removed ..........................            0.03
                                              of actions from review under Executive                                                                         Corn, sweet, stover ......................            0.70
                                              Order 12866, entitled ‘‘Regulatory                      Transfer and Advancement Act
                                                                                                      (NTTAA) (15 U.S.C. 272 note).                          Sugarcane, cane 1 ........................            0.02
                                              Planning and Review’’ (58 FR 51735,                                                                            Cattle, meat byproducts ...............               1.5
                                              October 4, 1993). Because this action                   VII. Congressional Review Act                          Goat, meat byproducts .................               1.5
                                              has been exempted from review under                                                                            Sheep, meat byproducts ..............                 1.5
                                                                                                        Pursuant to the Congressional Review                 Horse, meat byproducts ...............                1.5
                                              Executive Order 12866, this action is
                                                                                                      Act (5 U.S.C. 801 et seq.), EPA will                   Hog, meat byproducts ..................               0.15
                                              not subject to Executive Order 13211,
                                                                                                      submit a report containing this rule and
                                              entitled ‘‘Actions Concerning                                                                                   1 There are no U.S. Registrations on Sugar-
                                                                                                      other required information to the U.S.
                                              Regulations That Significantly Affect                                                                         cane as of March 13, 2015.
                                                                                                      Senate, the U.S. House of
                                              Energy Supply, Distribution, or Use’’ (66                                                                         (2) [Reserved].
                                                                                                      Representatives, and the Comptroller
                                              FR 28355, May 22, 2001) or Executive                                                                              (b) [Reserved].
                                                                                                      General of the United States prior to
                                              Order 13045, entitled ‘‘Protection of
                                                                                                      publication of the rule in the Federal                [FR Doc. 2015–09482 Filed 4–22–15; 8:45 am]
                                              Children from Environmental Health
                                                                                                      Register. This action is not a ‘‘major                BILLING CODE 6560–50–P
                                              Risks and Safety Risks’’ (62 FR 19885,
                                                                                                      rule’’ as defined by 5 U.S.C. 804(2).
                                              April 23, 1997). This action does not
                                              contain any information collections                     List of Subjects in 40 CFR Part 180
                                              subject to OMB approval under the                                                                             DEPARTMENT OF HEALTH AND
                                                                                                        Environmental protection,
                                              Paperwork Reduction Act (PRA) (44                                                                             HUMAN SERVICES
                                                                                                      Administrative practice and procedure,
                                              U.S.C. 3501 et seq.), nor does it require               Agricultural commodities, Pesticides
                                              any special considerations under                                                                              Centers for Medicare & Medicaid
                                                                                                      and pests, Reporting and recordkeeping                Services
                                              Executive Order 12898, entitled                         requirements.
                                              ‘‘Federal Actions to Address
                                              Environmental Justice in Minority                        Dated: April 17, 2015.                               42 CFR Part 435
                                              Populations and Low-Income                              William Jordan,
                                                                                                      Acting Director, Office of Pesticide Programs.
                                                                                                                                                            Eligibility in the States, District of
                                              Populations’’ (59 FR 7629, February 16,                                                                       Columbia, the Northern Mariana
                                              1994).                                                    Therefore, 40 CFR chapter I is                      Islands, and American Samoa
                                                 Since tolerances and exemptions that                 amended as follows:
                                              are established on the basis of a petition                                                                    CFR Correction
                                              under FFDCA section 408(d), such as                     PART 180—[AMENDED]                                       In Title 42 of the Code of Federal
                                              the tolerance in this final rule, do not                                                                      Regulations, Parts 430 to 481, revised as
                                              require the issuance of a proposed rule,                ■ 1. The authority citation for part 180
                                                                                                      continues to read as follows:                         of October 1, 2014, on page 198, in
                                              the requirements of the Regulatory                                                                            § 435.912, revise paragraphs (a) and (b);
                                              Flexibility Act (RFA) (5 U.S.C. 601 et                      Authority: 21 U.S.C. 321(q), 346a and 371.        redesignate paragraphs (c), (d), and (e)
                                              seq.), do not apply.                                    ■ 2. Add § 180.682 to subpart C to read               as paragraphs (e), (f), and (g),
                                                 This action directly regulates growers,              as follows:                                           respectively; and add new paragraphs
                                              food processors, food handlers, and food                                                                      (c) and (d) to read as follows:
rljohnson on DSK7TPTVN1PROD with RULES




                                              retailers, not States or tribes, nor does               § 180.682 Bicyclopyrone; tolerances for
                                              this action alter the relationships or                  residues.                                             § 435.912 Timely determination of
                                              distribution of power and                                  (a) General. (1) Tolerances are                    eligibility. [Corrected]
                                              responsibilities established by Congress                established for residues of the herbicide               (a) For purposes of this section—
                                              in the preemption provisions of FFDCA                   bicyclopyrone (4-hydroxy-3-[[2-[(2-                     (1) ‘‘Timeliness standards’’ refer to the
                                              section 408(n)(4). As such, the Agency                  methoxyethoxy)methyl]-6-                              maximum period of time in which every
                                              has determined that this action will not                (trifluoromethyl)-3-                                  applicant is entitled to a determination


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Document Created: 2015-12-16 08:41:22
Document Modified: 2015-12-16 08:41:22
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal rule.
DatesThis regulation is effective April 23, 2015. Objections and requests for hearings must be received on or before June 22, 2015, and must be filed in accordance with the instructions provided in 40 CFR part 178 (see also Unit I.C. of the SUPPLEMENTARY INFORMATION).
ContactSusan Lewis, Registration Division (7505P), Office of Pesticide Programs, Environmental Protection Agency, 1200 Pennsylvania Ave. NW., Washington, DC 20460-0001; main telephone
FR Citation80 FR 22648 
CFR AssociatedEnvironmental Protection; Administrative Practice and Procedure; Agricultural Commodities; Pesticides and Pests and Reporting and Recordkeeping Requirements

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