Document ID: EPA-HQ-OPP-2019-0233-0008
Agency: epa
Document Type: Rule
Title: Pesticide Tolerances: 2,4-D
Posted Date: 2020-12-21T05:00Z

[Federal Register Volume 85, Number 245 (Monday, December 21, 2020)]
[Rules and Regulations]
[Pages 82939-82944]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-28128]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 180

[EPA-HQ-OPP-2019-0233; FRL-10017-30]

2,4-D; Pesticide Tolerances

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: This regulation establishes tolerances for residues of 2,4-D 
in or on intermediate wheatgrass bran, forage, grain, and straw and 
sesame seed. Interregional Research Project Number 4 (IR-4) requested 
these tolerances under the Federal Food, Drug, and Cosmetic Act 
(FFDCA).

DATES: This regulation is effective December 21, 2020. Objections and 
requests for hearings must be received on or before February 19, 2021, 
and must be filed in accordance with the instructions provided in 40 
CFR part 178 (see also Unit I.C. of the SUPPLEMENTARY INFORMATION).

ADDRESSES: The docket for this action, identified by docket 
identification (ID) number EPA-HQ-OPP-2019-0233, is available at http://www.regulations.gov or at the Office of Pesticide Programs Regulatory 
Public Docket (OPP Docket) in the Environmental Protection Agency 
Docket Center (EPA/DC), West William Jefferson Clinton Bldg., Rm. 3334, 
1301 Constitution Ave. NW, Washington, DC 20460-0001. The Public 
Reading Room is open from 8:30 a.m. to 4:30 p.m., Monday through 
Friday, excluding legal holidays. The telephone number for the Public 
Reading Room is (202) 566-1744, and the telephone number for the OPP 
Docket is (703) 305-5805.
    Due to the public health concerns related to COVID-19, the EPA 
Docket Center (EPA/DC) and Reading Room is closed to visitors with 
limited exceptions. The staff continues to provide remote customer 
service via email, phone, and webform. For the latest status 
information on EPA/DC services and docket access, visit https://www.epa.gov/dockets.

FOR FURTHER INFORMATION CONTACT: Marietta Echeverria, Registration 
Division (7505P), Office of Pesticide Programs, Environmental 
Protection Agency, 1200 Pennsylvania Ave. NW, Washington, DC 20460-
0001; main telephone number: (703) 305-7090; email address: 
RDFRNotices@epa.gov.

SUPPLEMENTARY INFORMATION: 

I. General Information

A. Does this action apply to me?

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

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

    You may access a frequently updated electronic version of EPA's 
tolerance regulations at 40 CFR part 180 through the Government 
Publishing Office's e-CFR site at http://www.ecfr.gov/cgi-bin/text-idx?&c=ecfr&tpl=/ecfrbrowse/Title40/40tab_02.tpl.

C. How can I file an objection or hearing request?

    Under FFDCA section 408(g), 21 U.S.C. 346a, any person may file an 
objection to any aspect of this regulation and may also request a 
hearing on those objections. You must file your objection or request a 
hearing on this regulation in accordance with the instructions provided 
in 40 CFR part 178. To ensure proper receipt by EPA, you must identify 
docket ID number EPA-HQ-OPP-2019-0233 in the subject line on the first 
page of your submission. All objections and requests for a hearing must 
be in writing, and must be received by the Hearing Clerk on or before 
February 19, 2021. 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-2019-0233, by one of 
the following methods:
     Federal eRulemaking Portal: http://www.regulations.gov. 
Follow the online instructions for submitting comments. Do not submit 
electronically any information you consider to be CBI or other 
information whose disclosure is restricted by statute.
     Mail: OPP Docket, Environmental Protection Agency Docket 
Center (EPA/DC), (28221T), 1200 Pennsylvania Ave. NW, Washington, DC 
20460-0001.
     Hand Delivery: To make special arrangements for hand 
delivery or delivery of boxed information, please follow the 
instructions at http://www.epa.gov/dockets/contacts.html.
    Additional instructions on commenting or visiting the docket, along 
with more information about dockets generally, is available at http://www.epa.gov/dockets.

II. Summary of Petitioned-For Tolerance

    In the Federal Register of September 30, 2020 (85 FR 61681) (FRL-
10014-74), EPA issued a document pursuant to FFDCA section 408(d)(3), 
21 U.S.C. 346a(d)(3), announcing the filing of pesticide petitions (an 
amended PP 9E8745 and PP 0E8848) by IR-4, IR-4 Project Headquarters, 
Rutgers, The State University of New Jersey, 500 College Road East, 
Suite 201W, Princeton, NJ 08540. This September 30, 2020 Notice 
supersedes the previous document the Agency published notifying the 
public of the filing of the IR-4 petition PP9E8745 in the Federal 
Register of August 30, 2019 (84 FR 45702) (FRL-9998-15).
    The petitions requested that 40 CFR part 180 be amended by 
establishing tolerances for residues of 2,4-D in or on the raw 
agricultural commodities wheatgrass, intermediate, bran at 4 parts per 
million (ppm); wheatgrass, intermediate, grain at 2 ppm; wheatgrass, 
intermediate, straw at 50 ppm, and wheatgrass, intermediate, forage at 
25 ppm (PP 9E8745) and sesame, seed at 0.05 ppm (PP 0E8848). That 
document referenced summaries of the petitions prepared by Nufarm and 
PBI Gordon, the registrants, which are

[[Page 82940]]

available in the docket, http://www.regulations.gov. There was one 
comment received in response to the notice of filing and it was in 
support of the petition. Although the petitioner requested a tolerance 
for wheatgrass, intermediate, forage at 25 ppm, the available data 
indicate that a tolerance of 30 ppm is appropriate; therefore, EPA is 
establishing that tolerance at 30 ppm. The remaining tolerances are 
being established as requested.

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 2,4-D including exposure 
resulting from the tolerances established by this action. EPA's 
assessment of exposures and risks associated with 2,4-D follows.

A. Toxicological Profile

    EPA has evaluated the available toxicity data and considered its 
validity, completeness, and reliability as well as the relationship of 
the results of the studies to human risk. EPA has also considered 
available information concerning the variability of the sensitivities 
of major identifiable subgroups of consumers, including infants and 
children.
    The toxicity profile of 2,4-D shows that the principal toxic 
effects are changes in the kidney, thyroid, liver, adrenal, eye, and 
ovaries/testes in the rat following exposure to 2,4-D via the oral 
route at dose levels above the threshold of saturation of renal 
clearance; below that level, the kidneys rapidly excrete the chemical 
before it has any toxic effects on the body. No systemic toxicity was 
observed in rabbits following repeated exposure via the dermal route at 
dose levels up to the limit dose. Neurotoxicity was observed in the 
acute neurotoxicity study in rats at the high dose. In an extended 1-
generation reproductive toxicity study in rats, reproductive toxicity, 
developmental neurotoxicity, and immunotoxicity were not observed, and 
the thyroid effects observed at dose levels up to/approaching renal 
saturation were considered treatment-related, although not adverse. 
Maternal and developmental toxicities were observed only at high dose 
levels exceeding the threshold of saturation of renal clearance. 
Regarding carcinogenicity, available data showed no statistically 
significant tumor response in rats and mice. Moreover, EPA's literature 
review found that, overall, there was little substantive evidence to 
suggest a clear associative or causal relationship between exposure to 
2,4-D and cancer.
    Specific information on the studies received and the nature of the 
adverse effects caused by 2,4-D 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 titled ``2,4-D. Second Revision: 
Human Health Risk Assessment for Registration Review'' (hereinafter 
``2,4-D Human Health Risk Assessment for Registration Review'') in 
docket ID number EPA-HQ-OPP-2019-0233.

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://www2.epa.gov/pesticide-science-and-assessing-pesticide-risks/assessing-human-health-risk-pesticide.
    A summary of the toxicological endpoints for 2,4-D used for human 
risk assessment can be found in the 2,4-D Human Health Risk Assessment 
for Registration Review.

C. Exposure Assessment

    1. Dietary exposure from food and feed uses. In evaluating dietary 
exposure to 2,4-D, EPA considered exposure under the petitioned-for 
tolerances as well as all existing 2,4-D tolerances in 40 CFR 180.142. 
EPA assessed dietary exposures from 2,4-D 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.
    Such effects were identified for 2,4-D. In estimating acute dietary 
exposure, EPA used 2003-2008 food consumption information from the 
United States Department of Agriculture's (USDA's) National Health and 
Nutrition Examination Survey, What We Eat in America, (NHANES/WWEIA). 
As to residue levels in food, EPA assumed tolerance-level residues, 
except for transgenic soybeans and cotton (for which a value higher 
than the tolerance was used to account for the 2,4-DCP metabolite), and 
100 percent crop treated (PCT) for all commodities, as well as 
empirical and default processing factors.
    ii. Chronic exposure. In conducting the chronic dietary exposure 
assessment, EPA used the 2003-2008 food consumption data from the 
USDA's NHANES/WWEIA. As to residue levels in food, EPA assumed 
tolerance-level residues, except for transgenic soybeans and cotton 
(for which a value higher than the tolerance was used to account for 
the 2,4-DCP metabolite), and 100 percent crop treated (PCT) for all 
commodities, as well as empirical and default processing factors.

[[Page 82941]]

    iii. Cancer. Based on the data summarized in the 2,4-D Human Health 
Risk Assessment for Registration Review in docket ID number EPA-HQ-OPP-
2019-0233, EPA has concluded that 2,4-D is not expected to pose a 
cancer risk to humans. Therefore, a dietary exposure assessment for the 
purpose of assessing cancer risk is unnecessary.
    iv. Anticipated residue and PCT information. EPA did not use 
anticipated residue or PCT information in the dietary assessment for 
2,4-D. Tolerance-level residues (except for transgenic soybeans and 
cotton, for which a value higher than the tolerance was used to account 
for the 2,4-DCP metabolite) and 100 PCT were assumed for all food 
commodities.
    2. Dietary exposure from drinking water. The Agency used screening-
level water exposure models in the dietary exposure analysis and risk 
assessment for 2,4-D in drinking water. These simulation models take 
into account data on the physical, chemical, and fate/transport 
characteristics of 2,4-D. Further information regarding EPA drinking 
water models used in pesticide exposure assessment can be found at 
http://www2.epa.gov/pesticide-science-and-assessing-pesticide-risks/about-water-exposure-models-used-pesticide.
    Based on the Surface Water Concentration Calculator (SWCC), 
Pesticide Root Zone Model Ground Water (PRZM GW) model, and monitoring 
data, the estimated drinking water concentrations (EDWCs) of 2,4-D for 
acute exposures are estimated to be 298 parts per billion (ppb) for 
surface water and 14.89 ppb for ground water, and for chronic exposures 
are estimated to be 34.5 ppb for surface water and 14.89 ppb for ground 
water.
    Modeled estimates of drinking water concentrations were directly 
entered into the dietary exposure model. For the acute dietary risk 
assessment, the water concentration value of 298 ppb was used to assess 
the contribution to drinking water. For the chronic dietary risk 
assessment, the water concentration of value 34.5 ppb was used to 
assess the contribution to drinking water.
    3. From non-dietary exposure. The term ``residential exposure'' is 
used in this document to refer to non-occupational, non-dietary 
exposure (e.g., for lawn and garden pest control, indoor pest control, 
termiticides, and flea and tick control on pets).
    2,4-D is currently registered for the following uses that could 
result in residential exposures: Ornamental turf, including lawns, 
parks, sports fields, and golf courses, as well as aquatic uses. EPA 
assessed residential exposure using the following assumptions: There is 
no potential hazard via the dermal route for 2,4-D; therefore, the 
handler assessment included only the inhalation route of exposure. 
There are registered 2,4-D products for use in residential sites (e.g., 
lawns and turf) that have been considered in the short-term residential 
handler assessment for 2,4-D. As the aquatic use product labels include 
PPE requirements, and state that coordination and approval of local and 
state authorities and/or permits may be required prior to application, 
those applications are assumed to be made only by occupational 
applicators.
    There is potential for short-term post-application exposure for 
individuals as a result of being in an environment that has been 
previously treated with 2,4-D. The quantitative exposure/risk 
assessment for residential post-application exposures is based on the 
following scenarios:
     Incidental ingestion (i.e., hand-to-mouth, object-to-
mouth, soil ingestion exposure) from contact with treated turf 
(children 1 to less than 2 years old only),
     Episodic granular ingestion on treated turf (children 1 to 
less than 2 years old only), and
     Incidental ingestion of water during recreational swimming 
(both adults and children 3 to less than 6 years old).
    The residential exposure scenario used in the adult and children 3 
to less than 6 years aggregate assessments reflects short-term 
incidental oral exposure from post-application exposure swimmer 
scenario.
    The residential exposure scenario used in the children 1 to less 
than 2 years old aggregate assessment reflects short-term hand-to-mouth 
exposures from post-application turf scenario (i.e., post-application 
exposure to turf applications).
    These scenarios are considered worst-case and are protective of all 
other exposure scenarios.
    Further information regarding EPA standard assumptions and generic 
inputs for residential exposures may be found at http://www2.epa.gov/pesticide-science-and-assessing-pesticide-risks/standard-operating-procedures-residential-pesticide.
    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.''
    2,4-D is a member of the alkylphenoxy herbicide class of 
pesticides. This class also includes MCPA, 2,4-DB, and 2,4-DP. Unlike 
other pesticides for which EPA has followed a cumulative risk approach 
based on a common mechanism of toxicity, EPA has not made a common 
mechanism of toxicity finding as to 2,4-D and any other substances. For 
the purposes of this action, therefore, EPA has not assumed that 2,4-D 
has 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 the policy statements 
released by EPA's Office of Pesticide Programs concerning common 
mechanism determinations and procedures for cumulating effects from 
substances found to have a common mechanism on EPA's website at http://www2.epa.gov/pesticide-science-and-assessing-pesticide-risks/cumulative-assessment-risk-pesticides.

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. 2,4-D has been evaluated for 
potential developmental effects in the rat and rabbit. There is no 
evidence of increased susceptibility following in utero exposure to 
2,4-D in the rabbit developmental toxicity study or following in utero 
and/or pre-/post-natal exposure in the rat extended 1-generation 
reproduction toxicity study. Maternal toxicity in the rabbit included 
decreased body weight gain, clinical signs of toxicity (decreased motor 
activity, ataxia, loss of righting reflex, extremities cold to the 
touch) and developmental toxicity includes abortions.
    The rat developmental toxicity study and the rat 2-generation 
reproductive study indicate increased susceptibility

[[Page 82942]]

following in utero exposure to 2,4-D in the rat developmental toxicity 
study and/or pre-/post-natal exposure in the reproductive study. In the 
former, maternal toxicity included decreased body weight gains at the 
same dose level where developmental effects (occurrence of skeletal 
malformations) occurred; in the latter, maternal toxicity included 
decreased body weight gains at the same dose level where reduced 
viability of the F1 pups was observed. In both the rat developmental 
study and the rat 2-generation reproduction study, the toxicity was 
observed at dose levels that exceed renal saturation. Because the 
toxicity was observed at those levels, EPA expects that had an 
examination of the kidney been done on the maternal animals in these 
studies, kidney effects would have been revealed at doses lower than 
where the developmental effects had occurred; therefore, the study 
findings are not considered evidence of real susceptibility.
    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 2,4-D is complete.
    ii. Evidence of neurotoxicity was observed in the acute 
neurotoxicity study in rats, as evidenced by an increase in the 
incidence of in-coordination and slight gait abnormalities (forepaw 
flexing or knuckling) during the Functional Operational Battery 
assessment at the high dose in both sexes. In the subchronic 
neurotoxicity study, relative forelimb grip strength was significantly 
increased in rats of both sexes at the high-dose level, although there 
was no treatment-related change in absolute grip strength. Clinical 
signs of neurotoxicity (decreased motor activity, ataxia, loss of 
righting reflex, extremities cold to the touch) were observed in 
maternal rabbits in the developmental toxicity study. Developmental 
neurotoxicity was not observed in the developmental neurotoxicity 
cohort of the Extended One Generation Reproductive Toxicity study in 
rats. Neuropathological effects were not observed in any study.
    iii. There is evidence of increased susceptibility following in 
utero exposure to 2,4-D in the rat developmental toxicity study and 
following in utero and/or pre-/post-natal exposure in the rat 2-
generation reproduction study at dose levels that exceed renal 
saturation. There is no evidence of increased susceptibility following 
in utero exposure to 2,4-D in the rabbit developmental toxicity study 
or following in utero and/or pre-/post-natal exposure in the rat 
extended 1-generation reproduction toxicity study. Despite this 
conclusion, there is no residual uncertainty concerning the potential 
susceptibility of infants and children to effects of 2,4-D 
necessitating the retention of the 10X FQPA safety factor. There are no 
data gaps in the toxicology database, and the available reliable data 
provide clearly established NOAELs and LOAELs for the population of 
concern and the points of departure (POD) that are protective of 
susceptibility. Consequently, there is no need to retain the 10X FQPA 
safety factor to protect infants and children.
    iv. There are no residual uncertainties identified in the exposure 
databases. The dietary exposure estimates are unrefined and reflect 
primarily tolerance-level residues in food and 100 PCT. EPA made 
conservative (protective) assumptions in the ground and surface water 
modeling used to assess exposure to 2,4-D 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 2,4-
D.

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. Using the exposure assumptions discussed in this 
unit for acute exposure, the acute dietary exposure from food and water 
to 2,4-D will occupy 23% of the aPAD for children 1-2 years old, the 
population group receiving the greatest exposure.
    2. Chronic risk. Using the exposure assumptions described in this 
unit for chronic exposure, EPA has concluded that chronic exposure to 
2,4-D from food and water will utilize 20% of the cPAD for children 1 
to 2 years old, the population group receiving the greatest exposure. 
Based on the explanation in Unit III.C.3., regarding residential use 
patterns, chronic residential exposure to residues of 2,4-D 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).
    2,4-D 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 2,4-D.
    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 2000 for adults 
and 280 for children. Because EPA's level of concern for 2,4-D is a MOE 
of 100 or below, these MOEs are not of concern.
    4. Intermediate-term risk. Intermediate-term aggregate exposure 
takes into account intermediate-term residential exposure plus chronic 
exposure to food and water (considered to be a background exposure 
level).
    An intermediate-term adverse effect was identified; however, 2,4-D 
is not registered for any use patterns that would result in 
intermediate-term residential exposure. Intermediate-term risk is 
assessed based on intermediate-term residential exposure plus chronic 
dietary exposure. Because there is no intermediate-term residential 
exposure and chronic dietary exposure has already been assessed under 
the appropriately protective cPAD (which is at least as protective as 
the POD used to assess intermediate-term risk), no further assessment 
of intermediate-term risk is necessary, and EPA relies on the chronic 
dietary risk assessment for evaluating intermediate-term risk for 2,4-
D.
    5. Aggregate cancer risk for U.S. population. As discussed above, 
EPA has concluded that 2,4-D will not pose a cancer risk.
    6. Determination of safety. Based on these risk assessments, EPA 
concludes that there is a reasonable certainty that no harm will result 
to the general population, or to infants and children from aggregate 
exposure to 2,4-D residues.

IV. Other Considerations

A. Analytical Enforcement Methodology

    Adequate analytical methods are available for data collection and 
the enforcement of plant commodity tolerances. An adequate Gas 
Chromatography/Electron Capture

[[Page 82943]]

Detector (GC/ECD) enforcement method for plants (designated as EN-CAS 
Method No. ENC-2/93) was submitted, which has been independently 
validated and radiovalidated. An enforcement method was submitted for 
determination of 2,4-D in livestock commodities, which has been 
adequately radiovalidated. The methods have been submitted to FDA for 
inclusion in PAM II. The 10/1997 edition of FDA PAM Volume I, Appendix 
I indicates that 2,4-D is partially recovered (50-80%) using 
Multiresidue Methods Section 402 E1 and 402 E2.
    For multiresidue method analysis, 2,4-D is documented to be well-
recovered through the QuEChERS (Quick, Easy, Cheap, Effective, Rugged, 
and Safe) streamlined extraction method.
    The methods may be requested from: Chief, Analytical Chemistry 
Branch, Environmental Science Center, 701 Mapes Rd., Ft. Meade, MD 
20755-5350; telephone number: (410) 305-2905; email address: 
residuemethods@epa.gov.

B. International Residue Limits

    In making its tolerance decisions, EPA seeks to harmonize U.S. 
tolerances with international standards whenever possible, consistent 
with U.S. food safety standards and agricultural practices. EPA 
considers the international maximum residue limits (MRLs) established 
by the Codex Alimentarius Commission (Codex), as required by FFDCA 
section 408(b)(4).
    The Codex has not established any MRLs for 2,4-D on intermediate 
wheatgrass raw agricultural commodities or sesame seed.

C. Response to Comments

    There was one comment received in response to the notice of filing 
and it was in support of the petition.

V. Conclusion

    Therefore, tolerances are established for residues of 2,4-D, in or 
on sesame, seed at 0.05 ppm; wheatgrass, intermediate, bran at 4 ppm; 
wheatgrass, intermediate, forage at 30 ppm; wheatgrass, intermediate, 
grain at 2 ppm; and wheatgrass, intermediate, straw at 50 ppm.

VI. Statutory and Executive Order Reviews

    This action establishes tolerances under FFDCA section 408(d) in 
response to a petition submitted to the Agency. The Office of 
Management and Budget (OMB) has exempted these types of actions from 
review under Executive Order 12866, entitled ``Regulatory Planning and 
Review'' (58 FR 51735, October 4, 1993). Because this action has been 
exempted from review under Executive Order 12866, this action is not 
subject to Executive Order 13211, entitled ``Actions Concerning 
Regulations That Significantly Affect Energy Supply, Distribution, or 
Use'' (66 FR 28355, May 22, 2001) or Executive Order 13045, entitled 
``Protection of Children from Environmental Health Risks and Safety 
Risks'' (62 FR 19885, April 23, 1997), nor is it considered a 
regulatory action under Executive Order 13771, entitled ``Reducing 
Regulations and Controlling Regulatory Costs'' (82 FR 9339, February 3, 
2017). 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 tolerances in 
this final rule, do not require the issuance of a proposed rule, the 
requirements of the Regulatory Flexibility Act (RFA) (5 U.S.C. 601 et 
seq.), do not apply.
    This action directly regulates growers, food processors, food 
handlers, and food retailers, not States or tribes, nor does this 
action alter the relationships or distribution of power and 
responsibilities established by Congress in the preemption provisions 
of FFDCA section 408(n)(4). As such, the Agency has determined that 
this action will not have a substantial direct effect on States or 
Tribal Governments, on the relationship between the National Government 
and the States or Tribal Governments, or on the distribution of power 
and responsibilities among the various levels of government or between 
the Federal Government and Indian Tribes. Thus, the Agency has 
determined that Executive Order 13132, entitled ``Federalism'' (64 FR 
43255, August 10, 1999) and Executive Order 13175, entitled 
``Consultation and Coordination with Indian Tribal Governments'' (65 FR 
67249, November 9, 2000) do not apply to this action. In addition, this 
action does not impose any enforceable duty or contain any unfunded 
mandate as described under Title II of the Unfunded Mandates Reform Act 
(UMRA) (2 U.S.C. 1501 et seq.).
    This action does not involve any technical standards that would 
require Agency consideration of voluntary consensus standards pursuant 
to section 12(d) of the National Technology Transfer and Advancement 
Act (NTTAA) (15 U.S.C. 272 note).

VII. Congressional Review Act

    Pursuant to the Congressional Review Act (5 U.S.C. 801 et seq.), 
EPA will submit a report containing this rule and other required 
information to the U.S. Senate, the U.S. House of Representatives, and 
the Comptroller General of the United States prior to publication of 
the rule in the Federal Register. This action is not a ``major rule'' 
as defined by 5 U.S.C. 804(2).

List of Subjects in 40 CFR Part 180

    Environmental protection, Administrative practice and procedure, 
Agricultural commodities, Pesticides and pests, Reporting and 
recordkeeping requirements.

    Dated: December 4, 2020.
Marietta Echeverria,
Acting Director, Registration Division, Office of Pesticide Programs.

    Therefore, for the reasons stated in the preamble, EPA is amending 
40 CFR chapter I as follows:

PART 180--TOLERANCES AND EXEMPTIONS FOR PESTICIDE CHEMICAL RESIDUES 
IN FOOD

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.  180.142 amend paragraph (a) by designating the table and 
adding, in alphabetical order, in newly designated Table 1 to paragraph 
(a) the entries ``Sesame, seed''; ``Wheatgrass, intermediate, bran''; 
``Wheatgrass, intermediate, forage''; ``Wheatgrass, intermediate, 
grain''; and ``Wheatgrass, intermediate, straw'' to read as follows:

Sec.  180.142  2,4-D; tolerances for residues.

    (a) * * *

                        Table 1 to Paragraph (a)
------------------------------------------------------------------------
                                                             Parts per
                        Commodity                             million
------------------------------------------------------------------------
 
                                * * * * *
Sesame, seed............................................            0.05
 
                                * * * * *
Wheatgrass, intermediate, bran..........................               4
Wheatgrass, intermediate, forage........................              30
Wheatgrass, intermediate, grain.........................               2

[[Page 82944]]

 
Wheatgrass, intermediate, straw.........................              50
------------------------------------------------------------------------

* * * * *
[FR Doc. 2020-28128 Filed 12-17-20; 11:15 am]
BILLING CODE 6560-50-P