81_FR_19957 81 FR 19891 - Hexythiazox; Pesticide Tolerances

81 FR 19891 - Hexythiazox; Pesticide Tolerances

ENVIRONMENTAL PROTECTION AGENCY

Federal Register Volume 81, Issue 66 (April 6, 2016)

Page Range19891-19896
FR Document2016-07661

This regulation amends tolerances for residues of hexythiazox in or on citrus and cotton. Gowan Company requested these tolerances under the Federal Food, Drug, and Cosmetic Act (FFDCA).

Federal Register, Volume 81 Issue 66 (Wednesday, April 6, 2016)
[Federal Register Volume 81, Number 66 (Wednesday, April 6, 2016)]
[Rules and Regulations]
[Pages 19891-19896]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-07661]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 180

[EPA-HQ-OPP-2015-0338 and EPA-HQ-OPP-2015-0339; FRL-9942-32]


Hexythiazox; Pesticide Tolerances

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: This regulation amends tolerances for residues of hexythiazox 
in or on citrus and cotton. Gowan Company requested these tolerances 
under the Federal Food, Drug, and Cosmetic Act (FFDCA).

DATES: This regulation is effective April 6, 2016. Objections and 
requests for hearings must be received on or before June 6, 2016, 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 dockets for this action, identified by docket 
identification (ID) number EPA-HQ-OPP-2015-0338 and EPA-HQ-OPP-2015-
0339, are 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: [email protected].

SUPPLEMENTARY INFORMATION:

I. General Information

A. Does this action apply to me?

    You may be potentially affected by this action if you are an 
agricultural producer, food manufacturer, or pesticide manufacturer. 
The following list of North American Industrial Classification System 
(NAICS) codes is not intended to be exhaustive, but rather provides a 
guide to help readers determine whether this document applies to them. 
Potentially affected entities may include:
     Crop production (NAICS code 111).
     Animal production (NAICS code 112).
     Food manufacturing (NAICS code 311).
     Pesticide manufacturing (NAICS code 32532).

B. How can I get electronic access to other related information?

    You may access a frequently updated electronic version of EPA's 
tolerance regulations at 40 CFR part 180 through the Government 
Printing Office's e-CFR site at 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-2015-0338 and EPA-HQ-OPP-2015-0339 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 6, 2016. 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-2015-0338 and EPA-
HQ-OPP-2015-0339, 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 July 17, 2015 (80 FR 42462) (FRL-9929-
13), EPA issued a document pursuant to FFDCA section 408(d)(3), 21 
U.S.C. 346a(d)(3), announcing the filing of pesticide petitions (PP 
5F8346 and PP 5F8356) by Gowan Company, P.O. Box 5569, Yuma, AZ 85366-
5569. The petitions requested that tolerances currently listed in 40 
CFR 180.448 be amended for residues of the insecticide hexythiazox and 
its metabolites containing the (4-chlorophenyl)-4-methyl-2-oxo-3-
thiazolidine moiety, in or on citrus, dried pulp at 0.6 parts per 
million (ppm); citrus, oil at 26 ppm; fruit, citrus, group 10 at 0.6 
ppm; cotton gin byproducts at 15 ppm; and cotton, undelinted seed at 
0.5 ppm. That document referenced a summary of the petitions prepared 
by Gowan Company, the registrant, which is available in the docket, 
http://www.regulations.gov. There were no comments received in response 
to the notice of filing.
    Based upon review of the data supporting the petition, EPA has 
revoked citrus, dried pulp tolerance as it is covered by the 
recommended fruit, citrus, group 10-10 tolerance. For citrus oil, EPA 
revised the tolerance to 25 ppm and for cotton undelinted seed to 0.4

[[Page 19892]]

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 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 hexythiazox including exposure 
resulting from the tolerances established by this action. EPA's 
assessment of exposures and risks associated with hexythiazox 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. Hexythiazox has low acute toxicity by oral, dermal and 
inhalation routes of exposure. It is not a dermal irritant, is negative 
for dermal sensitization and produces only mild eye irritation. 
Hexythiazox is associated with toxicity of the liver and adrenals 
following subchronic and chronic exposure to dogs, rats and mice, with 
the dog being the most sensitive species. The prenatal developmental 
studies in rabbits and rats and the two-generation reproduction study 
in rats showed no indication of increased susceptibility to in utero or 
postnatal exposure to hexythiazox. Reproductive toxicity was not 
observed. There is no concern for immunotoxicity or neurotoxicity 
following exposure to hexythiazox. The toxicology database for 
hexythiazox does not show any evidence of treatment-related effects on 
the immune system. Hexythiazox is classified as ``likely to be 
carcinogenic to humans;'' however, the weight of evidence indicates 
that assessing chronic risk using the chronic population adjusted dose 
will be protective for any potential carcinogenic effects. Since the 
effects seen in the study that serves as the basis for the chronic PAD 
occurred at doses substantially below the lowest dose that induced 
tumors, the chronic PAD is considered protective of all chronic effects 
including potential carcinogenicity.
    Specific information on the studies received and the nature of the 
adverse effects caused by hexythiazox as well as the no-observed-
adverse-effect-level (NOAEL) and the lowest-observed-adverse-effect-
level (LOAEL) from the toxicity studies can be found at http://www.regulations.gov in the document: Hexythiazox. Human Health Risk 
Assessment to Support Amended Uses on Cotton and Citrus in docket ID 
number EPA-HQ-OPP-2015-0338 or EPA-HQ-OPP-2015-0339.

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 hexythiazox used for human risk assessment is shown in 
Table 1 of this unit.

  Table 1--Summary of Toxicological Doses and Endpoints for Hexythiazox 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 (All populations)..  No risk is expected from this exposure scenario as no hazard was identified
                                    in any toxicity study for this duration of exposure.
----------------------------------------------------------------------------------------------------------------
Chronic dietary (All populations)  NOAEL = 2.5 mg/kg/    Chronic RfD = 0.025  1-year toxicity feeding study--Dog
                                    day UFA = 10x.        mg/kg/day.          LOAEL = 12.5 mg/kg/day based on
                                   UFH = 10x...........  cPAD = 0.025 mg/kg/   increased absolute and relative
                                   FQPA SF = 1x........   day.                 adrenal weights and associated
                                                                               adrenal histopathology.
----------------------------------------------------------------------------------------------------------------

[[Page 19893]]

 
Incidental oral short-term (1 to   NOAEL = 30 mg/kg/day  LOC for MOE = 100..  2-generation reproduction study--
 30 days) and intermediate-term     UFA = 10x.                                 Rat.
 (1 to 6 months).                  UFH = 10x...........                       LOAEL = 180 mg/kg/day based on
                                   FQPA SF = 1x........                        decreased pup body weight during
                                                                               lactation and delayed hair growth
                                                                               and/or eye opening, and decreased
                                                                               parental body-weight gain and
                                                                               increased absolute and relative
                                                                               liver, kidney, and adrenal
                                                                               weights.
                                                                              Co-critical
                                                                              13-Week Oral Toxicity Study--Rat.
                                                                              NOAEL = 5.5 mg/kg/day
                                                                              LOAEL = 38 mg/kg/day, based on
                                                                               increased absolute and relative
                                                                               liver weights in both sexes,
                                                                               increased relative ovarian and
                                                                               kidney weights, and fatty
                                                                               degeneration of the adrenal zona
                                                                               fasciculata.
                                                                              @397.5/257.6 mg/kg/day, decreased
                                                                               body-weight gain in females,
                                                                               slight swelling of hepatocytes in
                                                                               central zone (both sexes),
                                                                               increased incidence of
                                                                               glomerulonephrosis in males,
                                                                               increased adrenal weights.
----------------------------------------------------------------------------------------------------------------
Inhalation short-term (1 to 30     Oral study NOAEL =    LOC for MOE = 100..  2-generation reproduction study--
 days) and                          30 mg/kg/day                               Rat.
intermediate-term (1 to 6 months)   (inhalation                               LOAEL = 180 mg/kg/day based on
                                    absorption rate =                          decreased pup body weight during
                                    100%).                                     lactation and delayed hair growth
                                   UFA = 10x...........                        and/or eye opening, and decreased
                                   UFH = 10x...........                        parental body-weight gain and
                                                                               increased absolute and relative
                                                                               liver, kidney, and adrenal
                                                                               weights.
                                                                              Co-Critical
                                                                              13-Week Feeding Study--Rat.
                                                                              LOAEL = 38.1 mg/kg/day, based on
                                                                               increased absolute and relative
                                                                               liver weights in both sexes,
                                                                               increased relative ovarian and
                                                                               kidney weights, and fatty
                                                                               degeneration of the adrenal zona
                                                                               fasciculata.
----------------------------------------------------------------------------------------------------------------
Cancer (Oral, dermal, inhalation)  Classification: ``Likely to be Carcinogenic to Humans''. Insufficient
                                    evidence to warrant a quantitative estimation of human risk using a cancer
                                    slope factor based on the common liver tumors (benign and malignant)
                                    observed only in high dose female mice, and benign mammary gland tumors of
                                    no biological significance, observed only in high dose male rats in the
                                    absence of mutagenic concerns. The chronic RfD is protective of all chronic
                                    effects including potential carcinogenicity of hexythiazox.
----------------------------------------------------------------------------------------------------------------
FQPA SF = Food Quality Protection Act Safety Factor. LOAEL = lowest-observed-adverse-effect-level. LOC = level
  of concern. mg/kg/day = milligram/kilogram/day. MOE = margin of exposure. NOAEL = no-observed-adverse-effect-
  level. PAD = population adjusted dose (a = acute, c = chronic). RfD = reference dose. UF = uncertainty factor.
  UFA = extrapolation from animal to human (interspecies). UFH = potential variation in sensitivity among
  members of the human population (intraspecies).

C. Exposure Assessment

    1. Dietary exposure from food and feed uses. In evaluating dietary 
exposure to hexythiazox, EPA considered exposure under the petitioned-
for tolerances as well as all existing hexythiazox tolerances in 40 CFR 
180.448. EPA assessed dietary exposures from hexythiazox in food as 
follows:
    i. Acute exposure. Quantitative acute dietary exposure and risk 
assessments are performed for a food-use pesticide, if a toxicological 
study has indicated the possibility of an effect of concern occurring 
as a result of a 1-day or single exposure. No such effects were 
identified in the toxicological studies for hexythiazox; therefore, a 
quantitative acute dietary exposure assessment is unnecessary.
    ii. Chronic exposure. In conducting the chronic dietary exposure 
assessment EPA used the food consumption data from the U.S. Department 
of Agriculture's 2003-2008 National Health and Nutrition Examination 
Survey, What We Eat in America (NHANES/WWEIA). As to residue levels in 
food, EPA used tolerance-level residues, assumed 100 percent crop 
treated (PCT), and incorporated DEEM default processing factors when 
processing data were not available.
    iii. Cancer. Based on the data summarized in Unit III.A., EPA has 
concluded that a nonlinear RfD approach is appropriate for assessing 
cancer risk to hexythiazox. Cancer risk was assessed using the same 
exposure estimates as discussed in Unit III.C.1.ii.
    iv. Anticipated residue and percent crop treated (PCT) information. 
EPA did not use anticipated residue and/or PCT information in the 
dietary assessment for hexythiazox. Tolerance-level residues and/or 
100% CT were assumed for all food commodities.
    2. Dietary exposure from drinking water. The Agency used screening-
level water exposure models in the dietary exposure analysis and risk 
assessment for hexythiazox in drinking water. These simulation models 
take into account data on the physical, chemical, and fate/transport 
characteristics of hexythiazox. 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.
    Based on the Surface Water Concentration Calculator, the estimated 
drinking water concentrations (EDWCs) of hexythiazox for chronic 
exposures for non-cancer assessments are estimated to be 4.3 parts per 
billion (ppb) for surface water. Since groundwater residues are not 
expected to exceed surface water residues, surface water residues were 
used in the dietary risk assessment. Modeled estimates of drinking 
water

[[Page 19894]]

concentrations were directly entered into the dietary exposure model.
    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).
    Hexythiazox is currently registered for the following uses that 
could result in residential exposures: Ornamental plantings, lawns, 
recreational sites such as campgrounds and golf courses, turf, and 
fruit and nut trees in residential settings. EPA assessed residential 
exposure using the following assumptions:
    Residential handler exposures are expected to be short-term (1 to 
30 days) via either the dermal or inhalation routes of exposures. 
Intermediate-term exposures are not likely because of the intermittent 
nature of applications by residential applicators. Since hexythiazox 
does not pose a significant dermal risk, a quantitative dermal risk 
assessment was not performed and handler margins of exposure (MOE) were 
calculated for the inhalation route of exposure only.
    Both adults and children may be exposed to hexythiazox residues 
from contact with treated lawns or treated residential plants. Post-
application exposures are expected to be short-term (1 to 30 days) in 
duration for most exposure scenarios, and intermediate-term (1 to 6 
months) in duration for soil ingestion only due to the aerobic soil 
metabolism half-life for hexythiazox. Adult post-application exposures 
were not assessed since no quantitative dermal risk assessment is 
needed for hexythiazox and inhalation exposures are typically 
negligible in outdoor settings. The exposure assessment for children 
included incidental oral exposure resulting from transfer of residues 
from the hands or objects to the mouth, and from incidental ingestion 
of soil.
    Further information regarding EPA standard assumptions and generic 
inputs for residential exposures may be found at http://www.epa.gov/pesticides/trac/science/trac6a05.pdf.
    4. Cumulative effects from substances with a common mechanism of 
toxicity. Section 408(b)(2)(D)(v) of FFDCA requires that, when 
considering whether to establish, modify, or revoke a tolerance, the 
Agency consider ``available information'' concerning the cumulative 
effects of a particular pesticide's residues and ``other substances 
that have a common mechanism of toxicity.'' EPA has not found 
hexythiazox to share a common mechanism of toxicity with any other 
substances, and hexythiazox does not appear to produce a toxic 
metabolite. For the purposes of this tolerance action, therefore, EPA 
has assumed that hexythiazox does not have a common mechanism of 
toxicity with other substances. For information regarding EPA's efforts 
to determine which chemicals have a common mechanism of toxicity and to 
evaluate the cumulative effects of such chemicals, see EPA's Web site 
at http://www.epa.gov/pesticides/cumulative.

D. Safety Factor for Infants and Children

    1. In general. Section 408(b)(2)(C) of FFDCA provides that EPA 
shall apply an additional tenfold (10X) margin of safety for infants 
and children in the case of threshold effects to account for prenatal 
and postnatal toxicity and the completeness of the database on toxicity 
and exposure unless EPA determines based on reliable data that a 
different margin of safety will be safe for infants and children. This 
additional margin of safety is commonly referred to as the FQPA Safety 
Factor (SF). In applying this provision, EPA either retains the default 
value of 10X, or uses a different additional safety factor when 
reliable data available to EPA support the choice of a different 
factor.
    2. Prenatal and postnatal sensitivity. The prenatal development 
studies in rabbits and rats and the two-generation reproduction study 
in rats showed no indication of increased susceptibility to in utero 
and/or postnatal exposure to hexythiazox.
    3. Conclusion. EPA has determined that reliable data show the 
safety of infants and children would be adequately protected if the 
FQPA SF were reduced to 1X. That decision is based on the following 
findings:
    i. The toxicity database for hexythiazox is complete.
    ii. There is no indication that hexythiazox is a neurotoxic 
chemical and there is no need for a developmental neurotoxicity study 
or additional UFs to account for neurotoxicity.
    iii. There is no evidence that hexythiazox results in increased 
susceptibility in in utero rats or rabbits in the prenatal 
developmental studies or in young rats in the 2-generation reproduction 
study.
    iv. There are no residual uncertainties identified in the exposure 
databases. EPA made conservative (protective) assumptions in the ground 
and surface water modeling used to assess exposure to hexythiazox in 
drinking water. EPA used similarly conservative assumptions to assess 
post-application exposure of children as well as incidental oral 
exposure of toddlers. These assessments will not underestimate the 
exposure and risks posed by hexythiazox.

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.
    1. Acute risk. An acute aggregate risk assessment takes into 
account acute exposure estimates from dietary consumption of food and 
drinking water. No adverse effect, resulting from a single oral 
exposure, was identified and no acute dietary endpoint was selected. 
Therefore, hexythiazox is not expected to pose an acute risk.
    2. Chronic risk. Using the exposure assumptions described in this 
unit for chronic exposure, EPA has concluded that chronic exposure to 
hexythiazox from food and water will utilize 81% of the cPAD for 
children 1 to 2 years of age, the population group receiving the 
greatest exposure. Based on the explanation in Unit III.C.3., regarding 
residential use patterns, chronic residential exposure to residues of 
hexythiazox is not expected.
    3. Short-term risk. Short-term aggregate exposure takes into 
account short-term residential exposure plus chronic exposure to food 
and water (considered to be a background exposure level).
    Hexythiazox is currently registered for uses that could result in 
short-term residential exposure, and the Agency has determined that it 
is appropriate to aggregate chronic exposure through food and water 
with short-term residential exposures to hexythiazox.
    Using the exposure assumptions described in this unit for short-
term exposures, EPA has concluded the combined short-term food, water, 
and residential exposures result in aggregate MOEs of 1,300 for 
children and 9,900 for adults. Because EPA's level of concern for 
hexythiazox is a MOE of 100 or below, these MOEs are not of concern.
    4. Intermediate-term risk. Intermediate-term aggregate exposure 
takes into account intermediate-term residential exposure plus chronic

[[Page 19895]]

exposure to food and water (considered to be a background exposure 
level).
    Hexythiazox is currently registered for uses that could result in 
intermediate-term residential exposure, and the Agency has determined 
that it is appropriate to aggregate chronic exposure through food and 
water with intermediate-term residential exposures to hexythiazox.
    Using the exposure assumptions described in this unit for 
intermediate-term exposures, EPA has concluded that the combined 
intermediate-term food, water, and residential exposures result in 
aggregate MOEs of 1,500 for children and 9,900 for adults. Because 
EPA's level of concern for hexythiazox is a MOE of 100 or below, these 
MOEs are not of concern.
    5. Aggregate cancer risk for U.S. population. As discussed in Unit 
III.C.1.iii., EPA concluded that regulation based on the chronic 
reference dose will be protective for both chronic and carcinogenic 
risks. As noted in this unit, there are no chronic risks of concern.
    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 hexythiazox residues.

IV. Other Considerations

A. Analytical Enforcement Methodology

    Adequate enforcement methodology (high performance liquid 
chromatography method with ultraviolet detection (HPLC/UV)) is 
available to enforce the tolerance expression. This method is listed in 
the U.S. EPA Index of Residue Analytical methods under hexythiazox as 
method AMR-985-87.

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 established MRLs for residues of hexythiazox on 
citrus, fruits but not for cotton. The Codex plant residue definition 
is for hexythiazox as opposed to the U.S. definition which includes 
hexythiazox plus metabolites containing the (4-chlorophenyl)-4-methyl-
2-oxo-3-thiazolidine moiety. The differences in U.S. and Codex residue 
definitions prohibits harmonization.

C. Revisions to Petitioned-for Tolerances

    Although the petitioner requested an amended tolerance for citrus, 
dried pulp at 0.6, the Agency has determined that no such tolerance is 
necessary because that commodity is covered by the established citrus 
group 10-10 tolerance. The Agency is revising the tolerance for citrus 
oil to 25 ppm based on the following: By multiplying the citrus oil 
processing factor (104X) from the 2006 processing study (D334889, 07/
03/2006, T. Bloem) by the highest average field trial (HAFT) residue 
for lemons (0.243 ppm) from the submitted citrus study since lemons are 
the citrus crop that produced the highest residues.
    As noted in its most recent crop group rulemaking in the Federal 
Register of August 22, 2012 (77 FR 50617) (FRL-9354-3), EPA generally 
does not establish new tolerances under pre-existing crop groups that 
have been updated. EPA updated crop group 10 in 2010, making the new 
group 10-10. Therefore, EPA is establishing citrus fruit group 
tolerances for group 10-10, rather than crop group 10 as requested.
    The Agency is amending the tolerance for cotton, undelinted seed at 
0.4 ppm based on the available cotton data that reflect a national use 
at the label specified 35 day pre-harvest internal (PHI) to calculate 
the 0.4 ppm tolerance.

V. Conclusion

    Therefore, tolerances are amended for residues of hexythiazox and 
its metabolites containing the (4-chlorophenyl)-4-methyl-2-oxo-3-
thiazolidine moiety, in or on citrus, oil at 25 ppm; fruit, citrus, 
group 10-10 at 0.6 ppm; cotton, gin byproducts at 15 ppm; cotton, 
undelinted seed at 0.4 ppm. The current citrus, dried pulp tolerance is 
revoked because it is unnecessary due to the establishment of the 
fruit, citrus, group 10-10 tolerance.

VI. Statutory and Executive Order Reviews

    This action amends 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

[[Page 19896]]

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: March 22, 2016.
Susan Lewis,
Director, Registration Division, Office of Pesticide Programs.

    Therefore, 40 CFR chapter I is amended as follows:

PART 180--[AMENDED]

0
1. The authority citation for part 180 continues to read as follows:

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


0
2. In Sec.  180.448:
0
i. Add alphabetically the entries for ``Cotton, gin byproducts'' and 
``Cotton, undelinted seed'' to the table in paragraph (a).
0
ii. Remove the entry for ``Citrus, dried pulp'' from the table in 
paragraph (a).
0
iii. Revise the entry for ``Citrus, oil'' in the table in paragraph 
(a).
0
iv. Remove the entries for ``Cotton, gin byproducts, CA and AZ only'', 
and ``Cotton, undelinted seed, CA and AZ only'' from the table in 
paragraph (c).
0
v. Revise the entry for ``Fruit, citrus group 10 (CA, AZ, TX only)'' in 
the table in paragraph (c).
    The additions and revisions read as follows:


Sec.  180.448  Hexythiazox; tolerances for residues.

    (a) General. * * *

------------------------------------------------------------------------
                                                               Parts per
                          Commodity                             million
------------------------------------------------------------------------
 
                                * * * * *
Citrus, oil.................................................          25
 
                                * * * * *
Cotton, gin byproducts......................................          15
Cotton, undelinted seed.....................................         0.4
 
                                * * * * *
------------------------------------------------------------------------

    (c) Tolerances with regional registrations. * * *

------------------------------------------------------------------------
                                                               Parts per
                          Commodity                             million
------------------------------------------------------------------------
 
                                * * * * *
Fruit, citrus group 10-10 (CA, AZ, TX only).................         0.6
 
                                * * * * *
------------------------------------------------------------------------

* * * * *

[FR Doc. 2016-07661 Filed 4-5-16; 8:45 am]
 BILLING CODE 6560-50-P



                                                                    Federal Register / Vol. 81, No. 66 / Wednesday, April 6, 2016 / Rules and Regulations                                         19891

                                                  control number and adding, in its place,                and the telephone number for the OPP                    In addition to filing an objection or
                                                  ‘‘2900–0219’’.                                          Docket is (703) 305–5805. Please review               hearing request with the Hearing Clerk
                                                     The addition reads as follows:                       the visitor instructions and additional               as described in 40 CFR part 178, please
                                                                                                          information about the docket available                submit a copy of the filing (excluding
                                                  § 17.903   Payme.                                       at http://www.epa.gov/dockets.                        any Confidential Business Information
                                                    (a)(1) * * * For those services or                    FOR FURTHER INFORMATION CONTACT:                      (CBI)) for inclusion in the public docket.
                                                  benefits covered by §§ 17.900 through                   Susan Lewis, Registration Division                    Information not marked confidential
                                                  17.905 but not covered by CHAMPVA                       (7505P), Office of Pesticide Programs,                pursuant to 40 CFR part 2 may be
                                                  we will use payment methodologies the                   Environmental Protection Agency, 1200                 disclosed publicly by EPA without prior
                                                  same or similar to those used for                       Pennsylvania Ave. NW., Washington,                    notice. Submit the non-CBI copy of your
                                                  equivalent services or benefits provided                DC 20460–0001; main telephone                         objection or hearing request, identified
                                                  to veterans.                                            number: (703) 305–7090; email address:                by docket ID number EPA–HQ–OPP–
                                                  *     *     *    *     *                                RDFRNotices@epa.gov.                                  2015–0338 and EPA–HQ–OPP–2015–
                                                                                                          SUPPLEMENTARY INFORMATION:
                                                                                                                                                                0339, by one of the following methods:
                                                  § 17.904   [Amended]                                                                                            • Federal eRulemaking Portal: http://
                                                  ■ 5. Amend § 17.904 by, at the end of                   I. General Information                                www.regulations.gov. Follow the online
                                                  the section, removing ‘‘2900–0578’’                                                                           instructions for submitting comments.
                                                                                                          A. Does this action apply to me?
                                                  from the notice of the Office of                                                                              Do not submit electronically any
                                                  Management and Budget control                              You may be potentially affected by                 information you consider to be CBI or
                                                  number and adding, in its place, ‘‘2900–                this action if you are an agricultural                other information whose disclosure is
                                                  0219’’.                                                 producer, food manufacturer, or                       restricted by statute.
                                                  [FR Doc. 2016–07897 Filed 4–5–16; 8:45 am]              pesticide manufacturer. The following                   • Mail: OPP Docket, Environmental
                                                  BILLING CODE 8320–01–P
                                                                                                          list of North American Industrial                     Protection Agency Docket Center
                                                                                                          Classification System (NAICS) codes is                (EPA/DC), (28221T), 1200 Pennsylvania
                                                                                                          not intended to be exhaustive, but rather             Ave. NW., Washington, DC 20460–0001.
                                                                                                          provides a guide to help readers                        • Hand Delivery: To make special
                                                  ENVIRONMENTAL PROTECTION                                                                                      arrangements for hand delivery or
                                                                                                          determine whether this document
                                                  AGENCY                                                                                                        delivery of boxed information, please
                                                                                                          applies to them. Potentially affected
                                                  40 CFR Part 180                                         entities may include:                                 follow the instructions at http://
                                                                                                             • Crop production (NAICS code 111).                www.epa.gov/dockets/contacts.html.
                                                  [EPA–HQ–OPP–2015–0338 and EPA–HQ–                          • Animal production (NAICS code                    Additional instructions on commenting
                                                  OPP–2015–0339; FRL–9942–32]                             112).                                                 or visiting the docket, along with more
                                                                                                             • Food manufacturing (NAICS code                   information about dockets generally, is
                                                  Hexythiazox; Pesticide Tolerances                                                                             available at http://www.epa.gov/
                                                                                                          311).
                                                  AGENCY:  Environmental Protection                          • Pesticide manufacturing (NAICS                   dockets.
                                                  Agency (EPA).                                           code 32532).
                                                                                                                                                                II. Summary of Petitioned-for Tolerance
                                                  ACTION: Final rule.                                     B. How can I get electronic access to                    In the Federal Register of July 17,
                                                                                                          other related information?                            2015 (80 FR 42462) (FRL–9929–13),
                                                  SUMMARY:   This regulation amends
                                                  tolerances for residues of hexythiazox in                  You may access a frequently updated                EPA issued a document pursuant to
                                                  or on citrus and cotton. Gowan                          electronic version of EPA’s tolerance                 FFDCA section 408(d)(3), 21 U.S.C.
                                                  Company requested these tolerances                      regulations at 40 CFR part 180 through                346a(d)(3), announcing the filing of
                                                  under the Federal Food, Drug, and                       the Government Printing Office’s e-CFR                pesticide petitions (PP 5F8346 and PP
                                                  Cosmetic Act (FFDCA).                                   site at http://www.ecfr.gov/cgi-bin/text-             5F8356) by Gowan Company, P.O. Box
                                                                                                          idx?&c=ecfr&tpl=/ecfrbrowse/Title40/                  5569, Yuma, AZ 85366–5569. The
                                                  DATES: This regulation is effective April
                                                                                                          40tab_02.tpl.                                         petitions requested that tolerances
                                                  6, 2016. Objections and requests for
                                                                                                                                                                currently listed in 40 CFR 180.448 be
                                                  hearings must be received on or before                  C. How can I file an objection or hearing             amended for residues of the insecticide
                                                  June 6, 2016, and must be filed in                      request?                                              hexythiazox and its metabolites
                                                  accordance with the instructions                           Under FFDCA section 408(g), 21                     containing the (4-chlorophenyl)-4-
                                                  provided in 40 CFR part 178 (see also                   U.S.C. 346a, any person may file an                   methyl-2-oxo-3-thiazolidine moiety, in
                                                  Unit I.C. of the SUPPLEMENTARY                          objection to any aspect of this regulation            or on citrus, dried pulp at 0.6 parts per
                                                  INFORMATION).
                                                                                                          and may also request a hearing on those               million (ppm); citrus, oil at 26 ppm;
                                                  ADDRESSES:   The dockets for this action,               objections. You must file your objection              fruit, citrus, group 10 at 0.6 ppm; cotton
                                                  identified by docket identification (ID)                or request a hearing on this regulation               gin byproducts at 15 ppm; and cotton,
                                                  number EPA–HQ–OPP–2015–0338 and                         in accordance with the instructions                   undelinted seed at 0.5 ppm. That
                                                  EPA–HQ–OPP–2015–0339, are available                     provided in 40 CFR part 178. To ensure                document referenced a summary of the
                                                  at http://www.regulations.gov or at the                 proper receipt by EPA, you must                       petitions prepared by Gowan Company,
                                                  Office of Pesticide Programs Regulatory                 identify docket ID number EPA–HQ–                     the registrant, which is available in the
                                                  Public Docket (OPP Docket) in the                       OPP–2015–0338 and EPA–HQ–OPP–                         docket, http://www.regulations.gov.
                                                  Environmental Protection Agency                         2015–0339 in the subject line on the                  There were no comments received in
asabaliauskas on DSK3SPTVN1PROD with RULES




                                                  Docket Center (EPA/DC), West William                    first page of your submission. All                    response to the notice of filing.
                                                  Jefferson Clinton Bldg., Rm. 3334, 1301                 objections and requests for a hearing                    Based upon review of the data
                                                  Constitution Ave. NW., Washington, DC                   must be in writing, and must be                       supporting the petition, EPA has
                                                  20460–0001. The Public Reading Room                     received by the Hearing Clerk on or                   revoked citrus, dried pulp tolerance as
                                                  is open from 8:30 a.m. to 4:30 p.m.,                    before June 6, 2016. Addresses for mail               it is covered by the recommended fruit,
                                                  Monday through Friday, excluding legal                  and hand delivery of objections and                   citrus, group 10–10 tolerance. For citrus
                                                  holidays. The telephone number for the                  hearing requests are provided in 40 CFR               oil, EPA revised the tolerance to 25 ppm
                                                  Public Reading Room is (202) 566–1744,                  178.25(b).                                            and for cotton undelinted seed to 0.4


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                                                  19892             Federal Register / Vol. 81, No. 66 / Wednesday, April 6, 2016 / Rules and Regulations

                                                  ppm. The reasons for these changes are                  the relationship of the results of the                toxicity studies can be found at http://
                                                  explained in Unit IV.C.                                 studies to human risk. EPA has also                   www.regulations.gov in the document:
                                                                                                          considered available information                      Hexythiazox. Human Health Risk
                                                  III. Aggregate Risk Assessment and
                                                                                                          concerning the variability of the                     Assessment to Support Amended Uses
                                                  Determination of Safety
                                                                                                          sensitivities of major identifiable                   on Cotton and Citrus in docket ID
                                                     Section 408(b)(2)(A)(i) of FFDCA                     subgroups of consumers, including                     number EPA–HQ–OPP–2015–0338 or
                                                  allows EPA to establish a tolerance (the                infants and children. Hexythiazox has                 EPA–HQ–OPP–2015–0339.
                                                  legal limit for a pesticide chemical                    low acute toxicity by oral, dermal and
                                                                                                                                                                B. Toxicological Points of Departure/
                                                  residue in or on a food) only if EPA                    inhalation routes of exposure. It is not
                                                                                                                                                                Levels of Concern
                                                  determines that the tolerance is ‘‘safe.’’              a dermal irritant, is negative for dermal
                                                  Section 408(b)(2)(A)(ii) of FFDCA                       sensitization and produces only mild                     Once a pesticide’s toxicological
                                                  defines ‘‘safe’’ to mean that ‘‘there is a              eye irritation. Hexythiazox is associated             profile is determined, EPA identifies
                                                  reasonable certainty that no harm will                  with toxicity of the liver and adrenals               toxicological points of departure (POD)
                                                  result from aggregate exposure to the                   following subchronic and chronic                      and levels of concern to use in
                                                  pesticide chemical residue, including                   exposure to dogs, rats and mice, with                 evaluating the risk posed by human
                                                  all anticipated dietary exposures and all               the dog being the most sensitive species.             exposure to the pesticide. For hazards
                                                  other exposures for which there is                      The prenatal developmental studies in                 that have a threshold below which there
                                                  reliable information.’’ This includes                   rabbits and rats and the two-generation               is no appreciable risk, the toxicological
                                                  exposure through drinking water and in                  reproduction study in rats showed no                  POD is used as the basis for derivation
                                                  residential settings, but does not include              indication of increased susceptibility to             of reference values for risk assessment.
                                                  occupational exposure. Section                          in utero or postnatal exposure to                     PODs are developed based on a careful
                                                  408(b)(2)(C) of FFDCA requires EPA to                   hexythiazox. Reproductive toxicity was                analysis of the doses in each
                                                  give special consideration to exposure                  not observed. There is no concern for                 toxicological study to determine the
                                                  of infants and children to the pesticide                immunotoxicity or neurotoxicity                       dose at which no adverse effects are
                                                  chemical residue in establishing a                      following exposure to hexythiazox. The                observed (the NOAEL) and the lowest
                                                  tolerance and to ‘‘ensure that there is a               toxicology database for hexythiazox                   dose at which adverse effects of concern
                                                  reasonable certainty that no harm will                  does not show any evidence of                         are identified (the LOAEL). Uncertainty/
                                                  result to infants and children from                     treatment-related effects on the immune               safety factors are used in conjunction
                                                  aggregate exposure to the pesticide                     system. Hexythiazox is classified as                  with the POD to calculate a safe
                                                  chemical residue. . . .’’                               ‘‘likely to be carcinogenic to humans;’’              exposure level—generally referred to as
                                                     Consistent with FFDCA section                        however, the weight of evidence                       a population-adjusted dose (PAD) or a
                                                  408(b)(2)(D), and the factors specified in              indicates that assessing chronic risk                 reference dose (RfD)—and a safe margin
                                                  FFDCA section 408(b)(2)(D), EPA has                     using the chronic population adjusted                 of exposure (MOE). For non-threshold
                                                  reviewed the available scientific data                  dose will be protective for any potential             risks, the Agency assumes that any
                                                  and other relevant information in                       carcinogenic effects. Since the effects               amount of exposure will lead to some
                                                  support of this action. EPA has                         seen in the study that serves as the basis            degree of risk. Thus, the Agency
                                                  sufficient data to assess the hazards of                for the chronic PAD occurred at doses                 estimates risk in terms of the probability
                                                  and to make a determination on                          substantially below the lowest dose that              of an occurrence of the adverse effect
                                                  aggregate exposure for hexythiazox                      induced tumors, the chronic PAD is                    expected in a lifetime. For more
                                                  including exposure resulting from the                   considered protective of all chronic                  information on the general principles
                                                  tolerances established by this action.                  effects including potential                           EPA uses in risk characterization and a
                                                  EPA’s assessment of exposures and risks                 carcinogenicity.                                      complete description of the risk
                                                  associated with hexythiazox follows.                       Specific information on the studies                assessment process, see http://
                                                                                                          received and the nature of the adverse                www.epa.gov/pesticides/factsheets/
                                                  A. Toxicological Profile
                                                                                                          effects caused by hexythiazox as well as              riskassess.htm. A summary of the
                                                    EPA has evaluated the available                       the no-observed-adverse-effect-level                  toxicological endpoints for hexythiazox
                                                  toxicity data and considered its validity,              (NOAEL) and the lowest-observed-                      used for human risk assessment is
                                                  completeness, and reliability as well as                adverse-effect-level (LOAEL) from the                 shown in Table 1 of this unit.

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

                                                  Acute dietary (All populations) ..     No risk is expected from this exposure scenario as no hazard was identified in any toxicity study for this dura-
                                                                                         tion of exposure.

                                                  Chronic dietary (All populations)      NOAEL = 2.5 mg/kg/         Chronic RfD = 0.025        1-year toxicity feeding study—Dog
asabaliauskas on DSK3SPTVN1PROD with RULES




                                                                                          day UFA = 10x.              mg/kg/day.               LOAEL = 12.5 mg/kg/day based on increased absolute and rel-
                                                                                         UFH = 10x                  cPAD = 0.025 mg/             ative adrenal weights and associated adrenal histopathology.
                                                                                         FQPA SF = 1x                 kg/day




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                                                                    Federal Register / Vol. 81, No. 66 / Wednesday, April 6, 2016 / Rules and Regulations                                               19893

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

                                                  Incidental oral short-term (1 to       NOAEL = 30 mg/kg/          LOC for MOE = 100          2-generation reproduction study—Rat.
                                                    30 days) and intermediate-            day UFA = 10x.                                       LOAEL = 180 mg/kg/day based on decreased pup body weight
                                                    term (1 to 6 months).                UFH = 10x                                               during lactation and delayed hair growth and/or eye opening,
                                                                                         FQPA SF = 1x                                            and decreased parental body-weight gain and increased ab-
                                                                                                                                                 solute and relative liver, kidney, and adrenal weights.
                                                                                                                                               Co-critical
                                                                                                                                               13-Week Oral Toxicity Study—Rat.
                                                                                                                                               NOAEL = 5.5 mg/kg/day
                                                                                                                                               LOAEL = 38 mg/kg/day, based on increased absolute and rel-
                                                                                                                                                 ative liver weights in both sexes, increased relative ovarian
                                                                                                                                                 and kidney weights, and fatty degeneration of the adrenal
                                                                                                                                                 zona fasciculata.
                                                                                                                                               @397.5/257.6 mg/kg/day, decreased body-weight gain in fe-
                                                                                                                                                 males, slight swelling of hepatocytes in central zone (both
                                                                                                                                                 sexes), increased incidence of glomerulonephrosis in males,
                                                                                                                                                 increased adrenal weights.

                                                  Inhalation short-term (1 to 30         Oral study NOAEL =         LOC for MOE = 100          2-generation reproduction study—Rat.
                                                     days) and                             30 mg/kg/day (in-                                   LOAEL = 180 mg/kg/day based on decreased pup body weight
                                                  intermediate-term (1 to 6                halation absorption                                   during lactation and delayed hair growth and/or eye opening,
                                                     months).                              rate = 100%).                                         and decreased parental body-weight gain and increased ab-
                                                                                         UFA = 10x                                               solute and relative liver, kidney, and adrenal weights.
                                                                                         UFH = 10x                                             Co-Critical
                                                                                                                                               13-Week Feeding Study—Rat.
                                                                                                                                               LOAEL = 38.1 mg/kg/day, based on increased absolute and
                                                                                                                                                 relative liver weights in both sexes, increased relative ovarian
                                                                                                                                                 and kidney weights, and fatty degeneration of the adrenal
                                                                                                                                                 zona fasciculata.

                                                  Cancer (Oral, dermal, inhala-          Classification: ‘‘Likely to be Carcinogenic to Humans’’. Insufficient evidence to warrant a quantitative estimation
                                                    tion).                               of human risk using a cancer slope factor based on the common liver tumors (benign and malignant) observed
                                                                                         only in high dose female mice, and benign mammary gland tumors of no biological significance, observed only
                                                                                         in high dose male rats in the absence of mutagenic concerns. The chronic RfD is protective of all chronic ef-
                                                                                         fects including potential carcinogenicity of hexythiazox.
                                                    FQPA SF = Food Quality Protection Act Safety Factor. LOAEL = lowest-observed-adverse-effect-level. LOC = level of concern. mg/kg/day =
                                                  milligram/kilogram/day. MOE = margin of exposure. NOAEL = no-observed-adverse-effect-level. PAD = population adjusted dose (a = acute, c =
                                                  chronic). RfD = reference dose. UF = uncertainty factor. UFA = extrapolation from animal to human (interspecies). UFH = potential variation in
                                                  sensitivity among members of the human population (intraspecies).


                                                  C. Exposure Assessment                                  from the U.S. Department of                             2. Dietary exposure from drinking
                                                                                                          Agriculture’s 2003–2008 National                      water. The Agency used screening-level
                                                     1. Dietary exposure from food and
                                                                                                          Health and Nutrition Examination                      water exposure models in the dietary
                                                  feed uses. In evaluating dietary
                                                                                                          Survey, What We Eat in America                        exposure analysis and risk assessment
                                                  exposure to hexythiazox, EPA
                                                                                                          (NHANES/WWEIA). As to residue levels                  for hexythiazox in drinking water.
                                                  considered exposure under the
                                                                                                          in food, EPA used tolerance-level                     These simulation models take into
                                                  petitioned-for tolerances as well as all
                                                                                                          residues, assumed 100 percent crop                    account data on the physical, chemical,
                                                  existing hexythiazox tolerances in 40
                                                                                                          treated (PCT), and incorporated DEEM                  and fate/transport characteristics of
                                                  CFR 180.448. EPA assessed dietary
                                                  exposures from hexythiazox in food as                   default processing factors when                       hexythiazox. Further information
                                                  follows:                                                processing data were not available.                   regarding EPA drinking water models
                                                     i. Acute exposure. Quantitative acute                   iii. Cancer. Based on the data                     used in pesticide exposure assessment
                                                  dietary exposure and risk assessments                   summarized in Unit III.A., EPA has                    can be found at http://www.epa.gov/
                                                  are performed for a food-use pesticide,                 concluded that a nonlinear RfD                        oppefed1/models/water/index.htm.
                                                  if a toxicological study has indicated the              approach is appropriate for assessing                   Based on the Surface Water
                                                  possibility of an effect of concern                     cancer risk to hexythiazox. Cancer risk               Concentration Calculator, the estimated
                                                  occurring as a result of a 1-day or single              was assessed using the same exposure                  drinking water concentrations (EDWCs)
asabaliauskas on DSK3SPTVN1PROD with RULES




                                                  exposure. No such effects were                          estimates as discussed in Unit III.C.1.ii.            of hexythiazox for chronic exposures for
                                                  identified in the toxicological studies                    iv. Anticipated residue and percent                non-cancer assessments are estimated to
                                                  for hexythiazox; therefore, a quantitative              crop treated (PCT) information. EPA did               be 4.3 parts per billion (ppb) for surface
                                                  acute dietary exposure assessment is                    not use anticipated residue and/or PCT                water. Since groundwater residues are
                                                  unnecessary.                                            information in the dietary assessment                 not expected to exceed surface water
                                                     ii. Chronic exposure. In conducting                  for hexythiazox. Tolerance-level                      residues, surface water residues were
                                                  the chronic dietary exposure assessment                 residues and/or 100% CT were assumed                  used in the dietary risk assessment.
                                                  EPA used the food consumption data                      for all food commodities.                             Modeled estimates of drinking water


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                                                  19894             Federal Register / Vol. 81, No. 66 / Wednesday, April 6, 2016 / Rules and Regulations

                                                  concentrations were directly entered                    mechanism of toxicity with any other                  to assess post-application exposure of
                                                  into the dietary exposure model.                        substances, and hexythiazox does not                  children as well as incidental oral
                                                     3. From non-dietary exposure. The                    appear to produce a toxic metabolite.                 exposure of toddlers. These assessments
                                                  term ‘‘residential exposure’’ is used in                For the purposes of this tolerance                    will not underestimate the exposure and
                                                  this document to refer to non-                          action, therefore, EPA has assumed that               risks posed by hexythiazox.
                                                  occupational, non-dietary exposure                      hexythiazox does not have a common
                                                  (e.g., for lawn and garden pest control,                                                                      E. Aggregate Risks and Determination of
                                                                                                          mechanism of toxicity with other
                                                  indoor pest control, termiticides, and                                                                        Safety
                                                                                                          substances. For information regarding
                                                  flea and tick control on pets).                         EPA’s efforts to determine which                         EPA determines whether acute and
                                                     Hexythiazox is currently registered for              chemicals have a common mechanism                     chronic dietary pesticide exposures are
                                                  the following uses that could result in                 of toxicity and to evaluate the                       safe by comparing aggregate exposure
                                                  residential exposures: Ornamental                       cumulative effects of such chemicals,                 estimates to the acute PAD (aPAD) and
                                                  plantings, lawns, recreational sites such               see EPA’s Web site at http://                         chronic PAD (cPAD). For linear cancer
                                                  as campgrounds and golf courses, turf,                  www.epa.gov/pesticides/cumulative.                    risks, EPA calculates the lifetime
                                                  and fruit and nut trees in residential                                                                        probability of acquiring cancer given the
                                                  settings. EPA assessed residential                      D. Safety Factor for Infants and                      estimated aggregate exposure. Short-,
                                                  exposure using the following                            Children                                              intermediate- and chronic-term risks are
                                                  assumptions:                                              1. In general. Section 408(b)(2)(C) of              evaluated by comparing the estimated
                                                     Residential handler exposures are                    FFDCA provides that EPA shall apply                   aggregate food, water, and residential
                                                  expected to be short-term (1 to 30 days)                an additional tenfold (10X) margin of                 exposure to the appropriate PODs to
                                                  via either the dermal or inhalation                     safety for infants and children in the                ensure that an adequate MOE exists.
                                                  routes of exposures. Intermediate-term                  case of threshold effects to account for                 1. Acute risk. An acute aggregate risk
                                                  exposures are not likely because of the                 prenatal and postnatal toxicity and the               assessment takes into account acute
                                                  intermittent nature of applications by                  completeness of the database on toxicity              exposure estimates from dietary
                                                  residential applicators. Since                          and exposure unless EPA determines                    consumption of food and drinking
                                                  hexythiazox does not pose a significant                 based on reliable data that a different               water. No adverse effect, resulting from
                                                  dermal risk, a quantitative dermal risk                 margin of safety will be safe for infants             a single oral exposure, was identified
                                                  assessment was not performed and                        and children. This additional margin of               and no acute dietary endpoint was
                                                  handler margins of exposure (MOE)                       safety is commonly referred to as the                 selected. Therefore, hexythiazox is not
                                                  were calculated for the inhalation route                FQPA Safety Factor (SF). In applying                  expected to pose an acute risk.
                                                  of exposure only.                                       this provision, EPA either retains the                   2. Chronic risk. Using the exposure
                                                     Both adults and children may be                      default value of 10X, or uses a different             assumptions described in this unit for
                                                  exposed to hexythiazox residues from                    additional safety factor when reliable                chronic exposure, EPA has concluded
                                                  contact with treated lawns or treated                   data available to EPA support the choice              that chronic exposure to hexythiazox
                                                  residential plants. Post-application                    of a different factor.                                from food and water will utilize 81% of
                                                  exposures are expected to be short-term                   2. Prenatal and postnatal sensitivity.              the cPAD for children 1 to 2 years of
                                                  (1 to 30 days) in duration for most                     The prenatal development studies in                   age, the population group receiving the
                                                  exposure scenarios, and intermediate-                   rabbits and rats and the two-generation               greatest exposure. Based on the
                                                  term (1 to 6 months) in duration for soil               reproduction study in rats showed no                  explanation in Unit III.C.3., regarding
                                                  ingestion only due to the aerobic soil                  indication of increased susceptibility to             residential use patterns, chronic
                                                  metabolism half-life for hexythiazox.                   in utero and/or postnatal exposure to                 residential exposure to residues of
                                                  Adult post-application exposures were                   hexythiazox.                                          hexythiazox is not expected.
                                                  not assessed since no quantitative                        3. Conclusion. EPA has determined                      3. Short-term risk. Short-term
                                                  dermal risk assessment is needed for                    that reliable data show the safety of                 aggregate exposure takes into account
                                                  hexythiazox and inhalation exposures                    infants and children would be                         short-term residential exposure plus
                                                  are typically negligible in outdoor                     adequately protected if the FQPA SF                   chronic exposure to food and water
                                                  settings. The exposure assessment for                   were reduced to 1X. That decision is                  (considered to be a background
                                                  children included incidental oral                       based on the following findings:                      exposure level).
                                                  exposure resulting from transfer of                       i. The toxicity database for                           Hexythiazox is currently registered for
                                                  residues from the hands or objects to the               hexythiazox is complete.                              uses that could result in short-term
                                                  mouth, and from incidental ingestion of                   ii. There is no indication that                     residential exposure, and the Agency
                                                  soil.                                                   hexythiazox is a neurotoxic chemical                  has determined that it is appropriate to
                                                     Further information regarding EPA                    and there is no need for a                            aggregate chronic exposure through food
                                                  standard assumptions and generic                        developmental neurotoxicity study or                  and water with short-term residential
                                                  inputs for residential exposures may be                 additional UFs to account for                         exposures to hexythiazox.
                                                  found at http://www.epa.gov/pesticides/                 neurotoxicity.                                           Using the exposure assumptions
                                                  trac/science/trac6a05.pdf.                                iii. There is no evidence that                      described in this unit for short-term
                                                     4. Cumulative effects from substances                hexythiazox results in increased                      exposures, EPA has concluded the
                                                  with a common mechanism of toxicity.                    susceptibility in in utero rats or rabbits            combined short-term food, water, and
                                                  Section 408(b)(2)(D)(v) of FFDCA                        in the prenatal developmental studies or              residential exposures result in aggregate
                                                  requires that, when considering whether                 in young rats in the 2-generation                     MOEs of 1,300 for children and 9,900
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                                                  to establish, modify, or revoke a                       reproduction study.                                   for adults. Because EPA’s level of
                                                  tolerance, the Agency consider                            iv. There are no residual uncertainties             concern for hexythiazox is a MOE of 100
                                                  ‘‘available information’’ concerning the                identified in the exposure databases.                 or below, these MOEs are not of
                                                  cumulative effects of a particular                      EPA made conservative (protective)                    concern.
                                                  pesticide’s residues and ‘‘other                        assumptions in the ground and surface                    4. Intermediate-term risk.
                                                  substances that have a common                           water modeling used to assess exposure                Intermediate-term aggregate exposure
                                                  mechanism of toxicity.’’ EPA has not                    to hexythiazox in drinking water. EPA                 takes into account intermediate-term
                                                  found hexythiazox to share a common                     used similarly conservative assumptions               residential exposure plus chronic


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                                                                    Federal Register / Vol. 81, No. 66 / Wednesday, April 6, 2016 / Rules and Regulations                                         19895

                                                  exposure to food and water (considered                  different from a Codex MRL; however,                  Office of Management and Budget
                                                  to be a background exposure level).                     FFDCA section 408(b)(4) requires that                 (OMB) has exempted these types of
                                                     Hexythiazox is currently registered for              EPA explain the reasons for departing                 actions from review under Executive
                                                  uses that could result in intermediate-                 from the Codex level.                                 Order 12866, entitled ‘‘Regulatory
                                                  term residential exposure, and the                        The Codex has established MRLs for                  Planning and Review’’ (58 FR 51735,
                                                  Agency has determined that it is                        residues of hexythiazox on citrus, fruits             October 4, 1993). Because this action
                                                  appropriate to aggregate chronic                        but not for cotton. The Codex plant                   has been exempted from review under
                                                  exposure through food and water with                    residue definition is for hexythiazox as              Executive Order 12866, this action is
                                                  intermediate-term residential exposures                 opposed to the U.S. definition which                  not subject to Executive Order 13211,
                                                  to hexythiazox.                                         includes hexythiazox plus metabolites                 entitled ‘‘Actions Concerning
                                                     Using the exposure assumptions                       containing the (4-chlorophenyl)-4-                    Regulations That Significantly Affect
                                                  described in this unit for intermediate-                methyl-2-oxo-3-thiazolidine moiety. The               Energy Supply, Distribution, or Use’’ (66
                                                  term exposures, EPA has concluded that                  differences in U.S. and Codex residue                 FR 28355, May 22, 2001) or Executive
                                                  the combined intermediate-term food,                    definitions prohibits harmonization.                  Order 13045, entitled ‘‘Protection of
                                                  water, and residential exposures result                                                                       Children from Environmental Health
                                                                                                          C. Revisions to Petitioned-for Tolerances             Risks and Safety Risks’’ (62 FR 19885,
                                                  in aggregate MOEs of 1,500 for children
                                                  and 9,900 for adults. Because EPA’s                        Although the petitioner requested an               April 23, 1997). This action does not
                                                  level of concern for hexythiazox is a                   amended tolerance for citrus, dried pulp              contain any information collections
                                                  MOE of 100 or below, these MOEs are                     at 0.6, the Agency has determined that                subject to OMB approval under the
                                                  not of concern.                                         no such tolerance is necessary because                Paperwork Reduction Act (PRA) (44
                                                     5. Aggregate cancer risk for U.S.                    that commodity is covered by the                      U.S.C. 3501 et seq.), nor does it require
                                                  population. As discussed in Unit                        established citrus group 10–10                        any special considerations under
                                                  III.C.1.iii., EPA concluded that                        tolerance. The Agency is revising the                 Executive Order 12898, entitled
                                                  regulation based on the chronic                         tolerance for citrus oil to 25 ppm based              ‘‘Federal Actions to Address
                                                  reference dose will be protective for                   on the following: By multiplying the                  Environmental Justice in Minority
                                                  both chronic and carcinogenic risks. As                 citrus oil processing factor (104X) from              Populations and Low-Income
                                                  noted in this unit, there are no chronic                the 2006 processing study (D334889, 07/               Populations’’ (59 FR 7629, February 16,
                                                  risks of concern.                                       03/2006, T. Bloem) by the highest                     1994).
                                                     6. Determination of safety. Based on                 average field trial (HAFT) residue for                   Since tolerances and exemptions that
                                                  these risk assessments, EPA concludes                   lemons (0.243 ppm) from the submitted                 are established on the basis of a petition
                                                  that there is a reasonable certainty that               citrus study since lemons are the citrus              under FFDCA section 408(d), such as
                                                  no harm will result to the general                      crop that produced the highest residues.              the tolerance in this final rule, do not
                                                  population, or to infants and children                     As noted in its most recent crop group             require the issuance of a proposed rule,
                                                  from aggregate exposure to hexythiazox                  rulemaking in the Federal Register of                 the requirements of the Regulatory
                                                  residues.                                               August 22, 2012 (77 FR 50617) (FRL–                   Flexibility Act (RFA) (5 U.S.C. 601 et
                                                                                                          9354–3), EPA generally does not                       seq.), do not apply.
                                                  IV. Other Considerations                                establish new tolerances under pre-                      This action directly regulates growers,
                                                  A. Analytical Enforcement Methodology                   existing crop groups that have been                   food processors, food handlers, and food
                                                                                                          updated. EPA updated crop group 10 in                 retailers, not States or tribes, nor does
                                                    Adequate enforcement methodology                      2010, making the new group 10–10.                     this action alter the relationships or
                                                  (high performance liquid                                Therefore, EPA is establishing citrus                 distribution of power and
                                                  chromatography method with                              fruit group tolerances for group 10–10,               responsibilities established by Congress
                                                  ultraviolet detection (HPLC/UV)) is                     rather than crop group 10 as requested.               in the preemption provisions of FFDCA
                                                  available to enforce the tolerance                         The Agency is amending the tolerance               section 408(n)(4). As such, the Agency
                                                  expression. This method is listed in the                for cotton, undelinted seed at 0.4 ppm                has determined that this action will not
                                                  U.S. EPA Index of Residue Analytical                    based on the available cotton data that               have a substantial direct effect on States
                                                  methods under hexythiazox as method                     reflect a national use at the label                   or tribal governments, on the
                                                  AMR–985–87.                                             specified 35 day pre-harvest internal                 relationship between the national
                                                  B. International Residue Limits                         (PHI) to calculate the 0.4 ppm tolerance.             government and the States or tribal
                                                                                                                                                                governments, or on the distribution of
                                                    In making its tolerance decisions, EPA                V. Conclusion                                         power and responsibilities among the
                                                  seeks to harmonize U.S. tolerances with                    Therefore, tolerances are amended for              various levels of government or between
                                                  international standards whenever                        residues of hexythiazox and its                       the Federal Government and Indian
                                                  possible, consistent with U.S. food                     metabolites containing the (4-                        tribes. Thus, the Agency has determined
                                                  safety standards and agricultural                       chlorophenyl)-4-methyl-2-oxo-3-                       that Executive Order 13132, entitled
                                                  practices. EPA considers the                            thiazolidine moiety, in or on citrus, oil             ‘‘Federalism’’ (64 FR 43255, August 10,
                                                  international maximum residue limits                    at 25 ppm; fruit, citrus, group 10–10 at              1999) and Executive Order 13175,
                                                  (MRLs) established by the Codex                         0.6 ppm; cotton, gin byproducts at 15                 entitled ‘‘Consultation and Coordination
                                                  Alimentarius Commission (Codex), as                     ppm; cotton, undelinted seed at 0.4                   with Indian Tribal Governments’’ (65 FR
                                                  required by FFDCA section 408(b)(4).                    ppm. The current citrus, dried pulp                   67249, November 9, 2000) do not apply
                                                  The Codex Alimentarius is a joint                       tolerance is revoked because it is                    to this action. In addition, this action
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                                                  United Nations Food and Agriculture                     unnecessary due to the establishment of               does not impose any enforceable duty or
                                                  Organization/World Health                               the fruit, citrus, group 10–10 tolerance.             contain any unfunded mandate as
                                                  Organization food standards program,                                                                          described under Title II of the Unfunded
                                                  and it is recognized as an international                VI. Statutory and Executive Order                     Mandates Reform Act (UMRA) (2 U.S.C.
                                                  food safety standards-setting                           Reviews                                               1501 et seq.).
                                                  organization in trade agreements to                       This action amends tolerances under                    This action does not involve any
                                                  which the United States is a party. EPA                 FFDCA section 408(d) in response to a                 technical standards that would require
                                                  may establish a tolerance that is                       petition submitted to the Agency. The                 Agency consideration of voluntary


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                                                  19896             Federal Register / Vol. 81, No. 66 / Wednesday, April 6, 2016 / Rules and Regulations

                                                  consensus standards pursuant to section                                                                Parts per    Memorandum Opinion & Order
                                                                                                                          Commodity
                                                  12(d) of the National Technology                                                                        million     (MO&O), ET Docket No. 13–49, FCC 16–
                                                  Transfer and Advancement Act                                                                                        24, adopted March 1, 2015, and released
                                                  (NTTAA) (15 U.S.C. 272 note).                           Cotton, undelinted seed .............                 0.4   March 2, 2016. The full text of this
                                                                                                                                                                      document is available for inspection
                                                  VII. Congressional Review Act                           *           *            *           *            *
                                                                                                                                                                      and copying during normal business
                                                    Pursuant to the Congressional Review                                                                              hours in the FCC Reference Center
                                                  Act (5 U.S.C. 801 et seq.), EPA will                      (c) Tolerances with regional                              (Room CY–A257), 445 12th Street SW.,
                                                  submit a report containing this rule and                registrations. * * *                                        Washington, DC 20554. The full text
                                                  other required information to the U.S.                                                                              may also be downloaded at:
                                                  Senate, the U.S. House of                                                                              Parts per    www.fcc.gov. People with Disabilities:
                                                  Representatives, and the Comptroller                                    Commodity                       million     To request materials in accessible
                                                  General of the United States prior to                                                                               formats for people with disabilities
                                                  publication of the rule in the Federal                                                                              (braille, large print, electronic files,
                                                  Register. This action is not a ‘‘major                  *           *            *           *            *
                                                                                                                                                                      audio format), send an email to fcc504@
                                                  rule’’ as defined by 5 U.S.C. 804(2).                                                                               fcc.gov or call the Consumer &
                                                                                                          Fruit, citrus group 10–10 (CA,
                                                  List of Subjects in 40 CFR Part 180                       AZ, TX only) ............................           0.6   Governmental Affairs Bureau at 202–
                                                                                                                                                                      418–0530 (voice), 202–418–0432 (tty).
                                                    Environmental protection,                             *           *            *           *            *
                                                  Administrative practice and procedure,                                                                              Summary of Memorandum Opinion
                                                  Agricultural commodities, Pesticides                                                                                and Order
                                                  and pests, Reporting and recordkeeping                  *       *        *       *      *                           A. U–NII–3 Band Proposals for Changes
                                                  requirements.                                           [FR Doc. 2016–07661 Filed 4–5–16; 8:45 am]                  to the First R&O
                                                    Dated: March 22, 2016.                                BILLING CODE 6560–50–P                                         1. Prior to adoption of the First R&O,
                                                  Susan Lewis,                                                                                                        the FCC’s rules permitted the
                                                  Director, Registration Division, Office of                                                                          certification of devices that operate in
                                                  Pesticide Programs.                                     FEDERAL COMMUNICATIONS                                      the 5.725–5.85 GHz (U–NII–3) band
                                                    Therefore, 40 CFR chapter I is                        COMMISSION                                                  under two different rule sections (i.e.
                                                  amended as follows:                                                                                                 Sections 15.247 and 15.407). In some
                                                                                                          47 CFR Part 15                                              instances, and especially for devices
                                                  PART 180—[AMENDED]                                      [ET Docket No. 13–49; FCC 16–24]                            that operate in point-to-point
                                                                                                                                                                      configurations with high gain antennas,
                                                  ■ 1. The authority citation for part 180                Unlicensed—National Information                             the old Section 15.247 out-of-band
                                                  continues to read as follows:                           Infrastructure, Order on                                    emission (OOBE) limits were as much as
                                                      Authority: 21 U.S.C. 321(q), 346a and 371.          Reconsideration                                             47 dB more permissive than the Section
                                                                                                                                                                      15.407 OOBE limits and, therefore
                                                  ■  2. In § 180.448:                                     AGENCY:  Federal Communications
                                                                                                                                                                      devices certified under the old limits
                                                  ■  i. Add alphabetically the entries for                Commission.
                                                                                                                                                                      were significantly more likely to create
                                                  ‘‘Cotton, gin byproducts’’ and ‘‘Cotton,                ACTION: Final rule.                                         harmful interference to other operations.
                                                  undelinted seed’’ to the table in                                                                                   In the First R&O, the Commission
                                                  paragraph (a).                                          SUMMARY:         This document responds to
                                                                                                                seven petitions for reconsideration of                adopted a consolidated set of rules for
                                                  ■ ii. Remove the entry for ‘‘Citrus, dried
                                                                                                                certain rules adopted in the First Report             the 5.725–5.85 GHz band devices under
                                                  pulp’’ from the table in paragraph (a).                                                                             the Section 15.407 U–NII rules to
                                                  ■ iii. Revise the entry for ‘‘Citrus, oil’’ in                and Order (First R&O) in this
                                                                                                                proceeding, the Commission amends its                 resolve interference issues to Terminal
                                                  the table in paragraph (a).
                                                                                                                Part 15 rules governing the operation of              Doppler Weather Radar (TDWR) and
                                                  ■ iv. Remove the entries for ‘‘Cotton, gin
                                                                                                                unlicensed National Information                       other radar facilities in the adjacent
                                                  byproducts, CA and AZ only’’, and
                                                                                                                Infrastructure (U–NII) devices in the 5               band. In the First R&O, the Commission
                                                  ‘‘Cotton, undelinted seed, CA and AZ
                                                                                                                GHz band. These rule changes are                      recognized that point-to-point systems
                                                  only’’ from the table in paragraph (c).
                                                                                                                intended to make broadband                            utilizing high gain transmit antennas
                                                  ■ v. Revise the entry for ‘‘Fruit, citrus
                                                                                                                technologies more widely available for                certified under the old Section 15.247
                                                  group 10 (CA, AZ, TX only)’’ in the
                                                                                                                consumers and businesses by                           requirement may have to be modified to
                                                  table in paragraph (c).
                                                                                                                temporarily increasing the in-band                    comply with the lower OOBE limit
                                                     The additions and revisions read as
                                                                                                                power limits and permanently                          required for operation under Section
                                                  follows:
                                                                                                                increasing the out-of- band power limits              15.407. The Commission stated that
                                                  § 180.448 Hexythiazox; tolerances for                         for certain U–NII–3 band devices. The                 manufacturers had the flexibility to
                                                  residues.                                                     Commission also takes steps to maintain               determine how they should meet the
                                                     (a) General. * * *                                         certain levels of interference protection             lower OOBE limits, whether by
                                                                                                                for other authorized operations within                reducing output power, decreasing the
                                                               Commodity                            Parts per   the 5 GHz band.                                       transmit antenna gain, or utilizing
                                                                                                     million                                                          improved bandpass filters.
                                                                                                                DATES: Effective May 6, 2016.
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                                                                                                                                                                         2. In response to the First R&O, the
                                                                                                                FOR FURTHER INFORMATION CONTACT: Aole
                                                                                                                                                                      Commission received several petitions
                                                  *          *               *               *        *         Wilkins, Office of Engineering and                    for reconsideration of its decision.
                                                                                                                Technology, (202) 418–2406, email:                    Petitioners, mainly manufacturers and
                                                  Citrus, oil .....................................          25 Aole.Wilkins@fcc.gov, TTY (202) 418–
                                                                                                                                                                      operators of high gain point-to-point
                                                                                                                2989.                                                 communication systems, ask that the
                                                  *          *               *               *        *
                                                                                                                SUPPLEMENTARY INFORMATION: This is a                  Commission’s decision to impose more
                                                  Cotton, gin byproducts ...............                     15 summary of the Commission’s                           restrictive OOBE limits for devices in


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Document Created: 2018-02-07 13:51:46
Document Modified: 2018-02-07 13:51:46
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 6, 2016. Objections and requests for hearings must be received on or before June 6, 2016, 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 Citation81 FR 19891 
CFR AssociatedEnvironmental Protection; Administrative Practice and Procedure; Agricultural Commodities; Pesticides and Pests and Reporting and Recordkeeping Requirements

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