[Federal Register Volume 85, Number 31 (Friday, February 14, 2020)]
[Rules and Regulations]
[Pages 8457-8461]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-02036]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 180

[EPA-HQ-OPP-2018-0785; FRL-10003-04]


Prohexadione Calcium; Pesticide Tolerances

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: This regulation establishes tolerances with a regional 
registration for residues of prohexadione calcium in or on alfalfa 
forage, alfalfa hay, and field corn forage, grain, and stover. 
Interregional Research Project Number 4 (IR-4) requested these 
tolerances under the Federal Food, Drug, and Cosmetic Act (FFDCA).

DATES: This regulation is effective February 14, 2020. Objections and 
requests for hearings must be received on or before April 14, 2020, 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-2018-0785, is available at http://www.regulations.gov or at the Office of Pesticide Programs Regulatory 
Public Docket (OPP Docket) in the Environmental Protection Agency 
Docket Center (EPA/DC), West William Jefferson Clinton Bldg., Rm. 3334, 
1301 Constitution Ave. NW, Washington, DC 20460-0001. The Public 
Reading Room is open from 8:30 a.m. to 4:30 p.m., Monday through 
Friday, excluding legal holidays. The telephone number for the Public 
Reading Room is (202) 566-1744, and the telephone number for the OPP 
Docket is (703) 305-5805. Please review the visitor instructions and 
additional information about the docket available at http://www.epa.gov/dockets.

FOR FURTHER INFORMATION CONTACT: Michael Goodis, 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-2018-0785 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 
April 14, 2020. 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-2018-0785, 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 April 19, 2019 (84 FR 16430) (FRL-9991-
14), EPA issued a document pursuant to FFDCA section 408(d)(3), 21 
U.S.C.

[[Page 8458]]

346a(d)(3), announcing the filing of a pesticide petition (PP 8E8716) 
by IR-4, IR-4 Project Headquarters, Rutgers, The State University of 
New Jersey, 500 College Road East, Suite 201 W, Princeton, NJ 08540. 
The petition requested that 40 CFR 180.547 be amended by establishing 
tolerances with regional registrations in Wisconsin and Pennsylvania 
for residues of prohexadione calcium (calcium 3-oxido-5-oxo-4-
propionylcyclohex-3-enecarboxylate) in or on the raw agricultural 
commodities corn, field, forage at 0.10 parts per million (ppm); corn, 
field, grain at 0.10 ppm; corn, field, stover at 0.10 ppm; alfalfa, 
forage at 0.10 ppm; and alfalfa, hay at 0.10 ppm. That document 
referenced a summary of the petition prepared by Fine Agrochemicals, 
Ltd., the registrant, which is available in the docket, http://www.regulations.gov. There were no comments received in response to the 
notice of filing.
    EPA is establishing the requested tolerances, although the 
tolerance values have been adjusted to be consistent with Organization 
for Economic Cooperation and Development (OECD) Rounding Class 
Practice.

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 prohexadione calcium including 
exposure resulting from the tolerances established by this action. 
EPA's assessment of exposures and risks associated with prohexadione 
calcium 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.
    By the oral route, the most sensitive effect in the prohexadione 
calcium hazard database is kidney toxicity in dogs for both the 
subchronic and chronic durations. Minor hematological changes 
(decreased white blood cell counts in males), and fore-stomach 
hyperplasia were seen only at very high doses in rodents. No dermal 
toxicity was observed up to the limit dose of 1000 mg/kg/day.
    In rats and rabbits, no increased quantitative or qualitative pre- 
or postnatal susceptibility was observed. In rats, no maternal or 
developmental toxicity was observed up to the limit dose (1000 mg/kg/
day). Three developmental studies in rabbits are available in the 
toxicological database for prohexadione calcium. In one study, late 
abortions occurred during gestational days (GD) 24-29 at 200 mg/kg/day, 
with increased mortality in maternal animals (GD 15-24) also noted at 
this dose. In another rabbit developmental study, two premature 
deliveries (on GD 24 and 26) were noted at the highest-dose tested (350 
mg/kg/day) with no developmental effects observed. No maternal or 
developmental effects were seen in a third rabbit developmental study 
up to 150 mg/kg/day. In the 2-generation reproductive toxicity study 
with rats, parental toxicity (minimal mortality) occurred at a dose 
well below the dose that caused decreases in offspring body weight.
    There is no evidence of neurotoxicity in the toxicological database 
for prohexadione calcium, which includes acute and subchronic 
neurotoxicity studies.
    Prohexadione calcium is classified as not likely to be carcinogenic 
to humans based on lack of evidence of carcinogenicity in rats and 
mice.
    Specific information on the studies received and the nature of the 
adverse effects caused by prohexadione calcium 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 ``Prohexadione Calcium. 
Section 3 Registration for Use on Strawberry and Watercress. Human 
Health Risk Assessment'' on pages 26-28 in docket ID number EPA-HQ-OPP-
2018-0785.

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 prohexadione calcium 
used for human risk assessment is discussed in Unit III.B. of the final 
rule published in the Federal Register of July 8, 2015 (80 FR 38976) 
(FRL-9927-25).

C. Exposure Assessment

    1. Dietary exposure from food and feed uses. In evaluating dietary 
exposure to prohexadione calcium, EPA considered exposure under the 
petitioned-for tolerances as well as all existing prohexadione calcium 
tolerances in 40 CFR 180.547. EPA assessed dietary exposures from 
prohexadione calcium in food as follows:
    i. Acute exposure. Quantitative acute dietary exposure and risk 
assessments are performed for a food-use pesticide,

[[Page 8459]]

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 
prohexadione calcium; therefore, a quantitative acute dietary exposure 
assessment is unnecessary.
    ii. Chronic exposure. In estimating chronic dietary exposure, EPA 
used 2003-2008 food consumption information from the U.S. 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, the chronic assessment was based on tolerance-level residues and 
100 percent crop treated (PCT).
    iii. Cancer. Based on the data summarized in Unit III.A., EPA has 
concluded that prohexadione calcium does not 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 
prohexadione calcium. Tolerance level residues and 100 PCT were assumed 
for all food commodities.
    2. Dietary exposure from drinking water. The Agency used screening 
level water exposure models in the dietary exposure analysis and risk 
assessment for prohexadione calcium in drinking water. These simulation 
models take into account data on the physical, chemical, and fate/
transport characteristics of prohexadione calcium. 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 Pesticide in Water Calculator (PWC), the estimated 
drinking water concentrations (EDWCs) of prohexadione calcium for 
chronic exposures are estimated to be 29 ppb for surface water and 5.1 
x 10-\7\ ppb for ground water.
    Modeled estimates of drinking water concentrations were directly 
entered into the dietary exposure model. For the chronic dietary risk 
assessment, the water concentration of value 29 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).
    Prohexadione calcium is currently registered for the following uses 
that could result in residential exposures: Residential lawns, 
ornamentals, athletic fields, parks, and golf courses. EPA assessed 
residential exposure using the following assumptions: Residential 
handler exposure is not expected because all registered labels require 
the use of personal protective equipment (PPE) and are not intended for 
application by homeowners. Short-term exposure was assessed for post-
application incidental oral exposures of children 1 to less than 2 
years old. The Agency assessed hand-to-mouth exposures and incidental 
soil ingestion from applications to turf for children. Intermediate- 
and long-term exposures are not expected since there are no registered 
or proposed uses of prohexadione calcium that result in intermediate- 
or long-term residential exposures.
    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.''
    EPA has not found prohexadione calcium to share a common mechanism 
of toxicity with any other substances, and prohexadione calcium does 
not appear to produce a toxic metabolite produced by other substances. 
For the purposes of this tolerance action, therefore, EPA has assumed 
that prohexadione calcium does not have a common mechanism of toxicity 
with other substances. For information regarding EPA's efforts to 
determine which chemicals have a common mechanism of toxicity and to 
evaluate the cumulative effects of such chemicals, see EPA's website at 
http://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. In rats and rabbits, no 
increased quantitative or qualitative pre- or postnatal susceptibility 
was observed. In the 2-generation reproductive toxicity study with 
rats, parental toxicity (minimal mortality) occurred at a dose well 
below the dose that caused decreases in offspring body weight.
    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 prohexadione calcium is complete.
    ii. There is no indication that prohexadione calcium 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 prohexadione calcium results in 
increased susceptibility in in utero rats or rabbits in the prenatal 
developmental studies or in young rats in the 2-generation reproduction 
study.
    iv. There are no residual uncertainties identified in the exposure 
databases. The dietary food exposure assessment was performed based on 
100 PCT and tolerance-level residues. EPA made conservative 
(protective) assumptions in the ground and surface water modeling used 
to assess exposure to prohexadione calcium 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 
prohexadione calcium.

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

[[Page 8460]]

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, 
prohexadione calcium 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 
prohexadione calcium from food and water will utilize 17% 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 
prohexadione calcium 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).
    Prohexadione calcium 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 prohexadione 
calcium.
    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 an aggregate MOE of 2,300 for 
children 1 to less than 2 years old. Because EPA's level of concern for 
prohexadione calcium is an MOE below 100, this MOE is 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, 
prohexadione calcium 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 prohexadione calcium.
    5. Aggregate cancer risk for U.S. population. Based on the lack of 
evidence of carcinogenicity in two adequate rodent carcinogenicity 
studies, prohexadione calcium is not expected to pose a cancer risk to 
humans.
    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 prohexadione calcium residues.

IV. Other Considerations

A. Analytical Enforcement Methodology

    Adequate enforcement methodology (gas chromatography/mass-selective 
detector (GC/MSD) and liquid chromatography with tandem mass 
spectroscopy (LC-MS/MS)) is available to enforce the tolerance 
expression.
    The method may be requested from: Chief, Analytical Chemistry 
Branch, Environmental Science Center, 701 Mapes Rd., Ft. Meade, MD 
20755-5350; telephone number: (410) 305-2905; email address: 
residuemethods@epa.gov.

B. International Residue Limits

    In making its tolerance decisions, EPA seeks to harmonize U.S. 
tolerances with international standards whenever possible, consistent 
with U.S. food safety standards and agricultural practices. EPA 
considers the international maximum residue limits (MRLs) established 
by the Codex Alimentarius Commission (Codex), as required by FFDCA 
section 408(b)(4). The Codex Alimentarius is a joint United Nations 
Food and Agriculture Organization/World Health Organization food 
standards program, and it is recognized as an international food safety 
standards-setting organization in trade agreements to which the United 
States is a party. EPA may establish a tolerance that is different from 
a Codex MRL; however, FFDCA section 408(b)(4) requires that EPA explain 
the reasons for departing from the Codex level.
    The Codex has not established MRLs on alfalfa or corn for 
prohexadione calcium.

V. Conclusion

    Therefore, tolerances with regional registration are established 
for residues of prohexadione calcium in or on alfalfa, forage at 0.1 
ppm; alfalfa, hay at 0.1 ppm; corn, field, forage at 0.1 ppm; corn, 
field, grain at 0.1 ppm; and corn, field, stover at 0.1 ppm.

VI. Statutory and Executive Order Reviews

    This action establishes and modifies 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

[[Page 8461]]

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 30, 2019.
Michael Goodis,
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.  180.547, revise paragraph (c) to read as follows:


Sec.  180.547  Prohexadione calcium; tolerances for residues.

* * * * *
    (c) Tolerances with regional registrations. Tolerances with 
regional registration are established for residues of the plant growth 
regulator, prohexadione calcium, including its metabolites and 
degradates, in or on the commodities in table 2 in this paragraph (c). 
Compliance with the tolerance levels specified in table 2 in this 
paragraph (c) is to be determined by measuring only prohexadione 
calcium (calcium 3-oxido-5-oxo-4-propionylcyclohex-3-enecarboxylate) in 
or on the following commodities.

                        Table 2 to Paragraph (c)
------------------------------------------------------------------------
                                                               Parts per
                          Commodity                             million
------------------------------------------------------------------------
Alfalfa, forage.............................................         0.1
Alfalfa, hay................................................         0.1
Corn, field, forage.........................................         0.1
Corn, field, grain..........................................         0.1
Corn, field, stover.........................................         0.1
------------------------------------------------------------------------

* * * * *
[FR Doc. 2020-02036 Filed 2-13-20; 8:45 am]
 BILLING CODE 6560-50-P


