[Federal Register Volume 62, Number 73 (Wednesday, April 16, 1997)]
[Rules and Regulations]
[Pages 18528-18532]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 97-9372]
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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Parts 180, 185, and 186
[OPP-300473; FRL-5600-2]
RIN 2070-AB78
Clopyralid; Pesticide Tolerance
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
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SUMMARY: This document establishes tolerances for residues of the
herbicide clopyralid (3,6-dichloro-2-pyridine-carboxylic acid) in or on
the raw agricultural commodities corn, field, fodder; corn, field,
forage; corn, field, grain; and corn, field, milling fractions. It also
removes time-limited tolerances for residues of clopyralid on the same
commodities that expired on December 31, 1996. DowElanco requested
these tolerances under the Federal Food, Drug and Cosmetic Act (FFDCA)
as amended by the Food Quality Protection Act of l996 (Pub. L. 104-
170).
DATES: This regulation becomes effective April 16, 1997. Written
objections must be received on or before June 16, 1997.
ADDRESSES: Written objections and hearing requests, identified by the
docket control number, [OPP-300473; PP 8F3622, 0H 5597], may be
submitted to: Hearing Clerk (1900), Environmental Protection Agency,
Rm. M3708, 401 M St., SW., Washington, DC 20460. Fees accompanying
objections and hearing requests shall be labeled ``Tolerance Petition
Fees'' and forwarded to: EPA Headquarters Accounting Operations Branch,
OPP (Tolerance Fees), P.O. Box 360277M, Pittsburgh, PA 15251. A copy of
any objections and hearing requests filed with the Hearing Clerk should
be identified by the docket control number and submitted to: Public
Response and Program Resources Branch, Field Operations Division
(7506C), Office of Pesticide Programs, Environmental Protection Agency,
401 M St., SW., Washington, DC 20460. In person, bring copy of
objections and hearing requests to: Rm. 1132, CM #2, 1921 Jefferson
Davis Highway, Arlington, VA 22202.
A copy of objections and hearing requests filed with the Hearing
Clerk may also be submitted electronically to the OPP by sending
electronic mail (e-mail) to: opp-docket@epamail.epa.gov. Copies of
objections and hearing requests must be submitted as an ASCII file
avoiding the use of special characters and any form of encryption.
Copies of objections and hearing requests will also be accepted on
disks in WordPerfect in 5.1 file format or ASCII file format. All
copies of objections and hearing requests in electronic form must be
identified by the docket number [OPP-300473; PP 8F3622, 0H5597]. No
Confidential Business Information (CBI) should be submitted through e-
mail. Electronic copies of objections and hearing requests on this rule
may be filed online at many Federal Depository Libraries. Additional
information on electronic submissions can be found below in this
document.
FOR FURTHER INFORMATION CONTACT: By mail: Joanne I. Miller, Product
Manager (PM) 23, Registration Division (7505C), Environmental
Protection Agency, 401 M St., SW., Washington, DC 20460. Office
location and telephone number: Rm. 237, CM #2, 1921 Jefferson Davis
Hwy., Arlington, VA 22202, (703)-305-6224; e-mail:
miller.joanne@epamail.epa.gov.
SUPPLEMENTARY INFORMATION: On April 25, l994 EPA established time-
limited tolerances under sections 408 and 409 of the Federal Food Drug,
and Cosmetic Act (FFDCA), 2l U.S.C. 346a(d) and 348, for residues of
clopyralid on corn, field, fodder; corn, field, forage; corn, field,
grain; and corn, field, milling fractions (59 FR 19639)(FRL-4775-4).
These tolerances expired on December 31, l996. DowElanco, on September
27, l996, requested that the time-limited tolerances for residues of
the herbicide clopyralid in the field corn commodities under the
regulations mentioned above be made permanent tolerances based on
residue data that they had submitted as required to change the
tolerances from time-limited to permanent tolerances. DowElanco also
submitted a summary of its petition as required under the Federal Food,
Drug and Cosmetic Act (FFDCA) as amended by the Food Quality Protection
Act of l996 (Pub. L. 104-170).
A notice announcing the filing of DowElanco's petition was
published in the Federal Register, (61 FR 65221-65223, December 11,
l996)(FRL-5574-4). The proposed analytical method for determining
residues is gas chromatography with electrolytic conductivity
detection. The method for enforcement is available from the FDA; it is
pending publication in the Pesticide Analytical Manual II.
The basis for the conditional time-limited tolerances that expired
December 31, l996 was given in the Federal Register notice of Final
Rule (59 FR 19339). The required residue chemistry data have been
received, reviewed and found adequate by EPA to support the proposed
tolerances. Based on the review of the residue chemistry data, EPA
finds the tolerances established by this Final Rule adequately
supported.
There were no comments received in response to the notices of
filing.
The data submitted in the petition and other relevant material have
been evaluated. The toxicology data listed below were found acceptable
by EPA in support of these tolerances.
I. Toxicological Profile
1. A rat oral lethal dose (LD50) of 4,300 milligrams/kilogram
(mg/kg) of body weight.
2. A 13-week mouse feeding study with a no-observed-effect level
(NOEL) of 750 mg/kg/day.
3. Two 180-day dog feeding studies with NOEL > 50 mg/kg/day.
4. A rabbit teratology study with a developmental and a maternal
NOEL > 250 mg/kg/day, highest dose tested (HDT).
5. A rat teratology study with a developmental NOEL of > 250 mg/kg/
[[Page 18529]]
day (HDT) and a maternal toxicity NOEL of 75 mg/kg/day.
6. A two-generation rat reproduction study with a reproductive NOEL
of > 1,500 mg/kg/day and a systemic NOEL of 500 mg/kg/day.
7. A 1-year dog feeding study with a NOEL of 100 mg/kg/day.
8. A 2-year rat chronic feeding/oncogenicity study with a NOEL of
50 mg/kg/day with no oncogenic potential observed under the conditions
of the study at doses up to and including 150 mg/kg/day (HDT). A
significant decrease in mean body weights of females occurred at 150
mg/kg/day.
9. A repeat 2-year rat chronic feeding/oncogenicity study with a
systemic NOEL of 15 mg/kg/day and with no oncogenic potential observed
under conditions of the study up to 1,500 mg/kg/day (HDT). Hyperplasia
and thickening of the limiting ridge of the stomach occurred at 150 mg/
kg/day.
10. Three 2-year mouse oncogenicity studies with no oncogenic
potential observed under the conditions of the study up to and
including 2,000 mg/kg/day (HDT) and a systemic NOEL of 500 mg/kg/day.
11. A dominant lethal assay, negative.
12. In vivo rat cytogenic study, negative.
13. In vitro Salmonella and Saccharomyces assay, negative.
14. An in vivo mouse host-mediated assay, negative.
15. An unscheduled DNA synthesis assay in rats, negative.
16. In an animal metabolism study At doses of 5 mg/kg (oral),
radiolabeled clopyralid was excreted within 24 hours in all dosed rats.
Fecal elimination was minor. Detectable levels of residual radio-
activity were observed in the carcass and stomach at 72 hours post-
dose. Analysis of urine and fecal extracts showed no apparent
metabolism of clopyralid.
II. Aggregate Exposures
1. From food and feed uses. The primary source for human exposure
to clopyralid will be from ingestion of both raw and processed
agricultural commodities as proposed in the December 11, 1996 Notice
for Filing cited above. Based on exposure from existing permanent
tolerances listed in 40 CFR 180.431(a) of the Code of Federal
Regulations and the subject proposed tolerances in field corn raw
agricultural commodities, the Theoretical Maximum Residue Contributions
(TMRC) for the U.S. (48 States) adult population is 0.008214 mg/kg body
weight/day; for non-nursing infants, 0.015400; for children 1 to 6
years old, 0.018454. These estimates are based on the assumption that
100% of the field corn commodities are derived from field corn cultured
with the aid of the herbicide clopyralid.
2. From potable water. In examining aggregate exposure, FQPA
directs EPA to consider available information concerning exposures from
the pesticide residue in food and all other non-occupational exposures.
The primary non-food sources of exposure the Agency looks at include
drinking water (whether from groundwater or surface water), and
exposure through pesticide use in gardens, lawns, or buildings
(residential and other indoor uses).
There is presently no EPA Lifetime Health Advisory level for
clopyralid and its degradates as drinking water contaminates. EPA does
not have drinking water monitoring data available to perform a
quantitative drinking water risk assessment. Available environmental
fate data, conservative screening tools, GENEEC and Leaching Index have
been used to estimate environmental concentrations of clopyralid in
surface water and the leaching potential of clopyralid. The results of
these screens indicate that clopyralid is moderately persistent, highly
mobile in a soil and water environment, and may impact ground water and
surface water.
Because the Agency lacks sufficient water-related exposure data to
complete a comprehensive drinking water risk assessment for many
pesticides, EPA has commenced and nearly completed a process to
identify a reasonable yet conservative bounding figure for the
potential contribution of water related exposure to the aggregate risk
posed by a pesticide. In developing the bounding figure, EPA estimated
residue levels in water for a number of specific pesticides using
various data sources. The Agency then applied the estimated residue
levels, in conjunction with appropriate toxicological endpoints (RfD's
or acute dietary NOEL's) and assumptions about body weight and
consumption, to calculate, for each pesticide, the increment of
aggregate risk contributed by consumption of contaminated water. While
EPA has not yet pinpointed the appropriate bounding figure for
consumption of contaminated water, the ranges the Agency is continuing
to examine are all below the level that would cause clopyralid to
exceed the RfD if the tolerance being considered in this document were
granted. The Agency has therefore concluded that the potential
exposures associated with clopyralid in water, even at the higher
levels the Agency is considering as a conservative upper bound, would
not prevent the Agency from determining that there is a reasonable
certainty of no harm if the tolerance is granted.
3. From non-dietary uses. There is only one non-dietary use
registered under the Federal Insecticide, Fungicide and Rodenticide
Act, as amended. The use is for residential weed control in turf.
i. Short-term or intermediate-term. A part of the hazard assessment
process, the Agency reviews the available toxicological database to
determine the endpoints of concern. For clopyralid, the Agency does not
have a concern for a short-term or intermediate-term residential risk
assessment because the available data does not indicate any evidence of
significant toxicity by the dermal and inhalation routes. Therefore, a
short-term or intermediate-term residential risk assessment was not
required.
ii. Chronic. As part of the hazard assessment process an endpoint
of concern was determined for the chronic occupational or residential
assessment. However, during the exposure assessment process, the
exposures that would result from the use of clopyralid were determined
to be of an intermittent nature. The frequency and duration of these
exposures do not exhibit a chronic exposure pattern. The exposure does
not occur often enough to be considered a chronic exposure; i.e, a
continuous exposure that occurs for at least several months. Therefore,
it was not deemed appropriate to aggregate exposure from the
residential use with exposure from food and drinking water.
iii. Acute. As part of the hazard assessment process, the Agency
reviews the available toxicological database to determine the endpoints
of concern. For clopyralid, the Agency does not have a concern for an
acute dietary assessment because the available data do not indicate any
evidence of significant toxicity from a 1 day or single event exposure
by the oral route. Therefore, an acute dietary risk assessment was not
required.
4. Cumulative exposure to substances with common mechanism of
toxicity. Section 408(b)(2)(D)(v) 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.'' The Agency believes that ``available
information'' in this context might include not only toxicity,
chemistry, and exposure data, but also scientific policies and
methodologies for understanding common mechanisms of toxicity and
conducting cumulative risk
[[Page 18530]]
assessments. For most pesticides, although the Agency has some
information in its files that may turn out to be helpful in eventually
determining whether a pesticide shares a common mechanism of toxicity
with any other substances, EPA does not at this time have the
methodologies to resolve the complex scientific issues concerning
common mechanism of toxicity in a meaningful way. EPA has begun a pilot
process to study this issue further through the examination of
particular classes of pesticides. The Agency hopes that the results of
this pilot process will increase the Agency's scientific understanding
of this question such that EPA will be able to develop and apply
scientific principles for better determining which chemicals have a
common mechanism of toxicity and evaluating the cumulative effects of
such chemicals. The Agency anticipates, however, that even as its
understanding of the science of common mechanisms increases, decisions
on specific classes of chemicals will be heavily dependent on chemical
specific data, much of which may not be presently available.
Although at present the Agency does not know how to apply the
information in its files concerning common mechanism issues to most
risk assessments, there are pesticides as to which the common mechanism
issues can be resolved. These pesticides include pesticides that are
toxicologically dissimilar to existing chemical substances (in which
case the Agency can conclude that it is unlikely that a pesticide
shares a common mechanism of activity with other substances) and
pesticides that produce a common toxic metabolite (in which case common
mechanism of activity will be assumed).
EPA does not have, at this time, available data to determine
whether clopralid has a common mechanism of toxicity with other
substances or how to include this pesticide in a cumulative risk
assessment. Unlike other pesticides for which EPA has followed a
cumulative risk approach based on a common mechanism of toxicity,
clopyralid does not appear to produce a toxic metabolite produced by
other substances. For the purposes of this tolerance action, therefore,
EPA has not assumed that clopyralid has a common mechanism of toxicity
with other substances.
III. Determination of Safety for U.S. Population and Non-nursing
Infants
A. The U.S. Population
Based on a NOEL of 50.80 mg/kg bwt/day from a 2-year, rat feeding
study with a decreased mean body weight gain effect, and using an
uncertainty factor of 100 to account for the interspecies extrapolation
and intraspecies variability, the Agency has determined a Reference
Dose (RfD) of 0.5 mg/kg bwt/day for this assessment of chronic risk. As
indicated above, there is no endpoint of concern identified with acute
and short- or intermediate-term exposures. Based on the available
toxicity data and the available exposure data identified above, the
proposed and existing tolerances will utilize 2% of the RfD for the
U.S. population. As indicated above, whatever bounding figure EPA
chooses for drinking water exposure, the exposure estimate for
clopyralid would not exceed the RfD.
B. Infants and Children
FFDCA section 408 provides that EPA shall apply an additional
tenfold margin of exposure (safety) for infants and children in the
case of threshold effects to account for pre- and post-natal toxicity
and the completeness of the database unless EPA determines that a
different margin of exposure (safety) will be safe for infants and
children. Margins of exposure (safety) are often referred to as
uncertainty (safety) factors. EPA believes that reliable data support
using the standard margin of exposure (usually 100x for combined inter-
and intra-species variability)) and not the additional tenfold margin
of exposure when EPA has a complete database under existing guidelines
and when the severity of the effect in infants or children or the
potency or unusual toxic properties of a compound do not raise concerns
regarding the adequacy of the standard margin of exposure.
Based on current data requirements, the data base relative to pre-
and post-natal toxicity is complete. Risk to infants and children was
determined by use of two developmental toxicity studies and a two-
generation reproduction study. Both developmental studies had
developmental NOELs of > 250 mg/kg/day, the highest dose tested. These
studies also demonstrated that there was no developmental (prenatal)
toxicity, at dosages at or below dosages that resulted in maternal
toxicity. The maternal NOEL was > 250 mg/kg/day in the rabbit study and
75 mg/kg/day in the rat study. The developmental NOELs are fivefold
higher in both the rat and rabbit than the NOEL used for establishing
the RfD. Based on current data requirements, the data base relative to
pre- and post-natal toxicity is complete. There were no treatment-
related effects on any reproductive parameter in the adults or their
offspring. The NOEL for reproductive effects was 1,500 mg/kg bwt/day,
and there was no effect on reproductive parameters at > 1,500 mg/kg/day
nor was there an adverse effect on the morphology, growth or viability
of the offspring. The NOEL of the study was 30 times greater than the
NOEL of 50.0 mg/kg/day used for establishing the RfD. These data taken
together suggest minimal concern for developmental or reproductive
toxicity and do not indicate any increased pre- or post-natal
sensitivity. Therefore, EPA concludes that an additional uncertainty
factor is not necessary to protect the safety of infants and children
and that the RfD at 0.5 mg/kg/day is appropriate for assessing
aggregate risk to infants and children.
The percent of the RfD that will be utilized by the aggregate
exposure from all tolerances to clopyralid will range from 3% for non-
nursing infants, up to 3.6% for children (1 to 6 years of age).
Therefore, EPA concludes that there is a reasonable certainty that no
harm will result to infants and children from aggregate exposure. As
indicated above, whatever bounding figure EPA chooses for drinking
water exposure, the exposure estimate for clopyralid would not exceed
the RfD. Non-dietary exposures were discussed above under ``Non-Dietary
Exposure.''
IV. Other Considerations
1. Endocrine effects. There was no reported endocrine effect in any
of the toxicological studies reviewed in the toxicological profile of
this final rule.
2. Metabolism in plants and animals. The metabolism of clopyralid
in plants and animals is adequately understood for the purposes of
these tolerances. There are no metabolites of toxicological
significance in plants. The residue of concern in plants and animals is
the parent compound, clopyralid. In animal metabolism studies with C14
labeled clopyralid, the residues found were clopyralid and its glycine
conjugate.
3. Analytical method. There is a practical analytical method for
detecting and measuring levels of clopyralid in or on food with a limit
of detection that allows monitoring of food with residues at or above
the levels set in these tolerances. The analytical method for
determining residues is gas chromatography with electrolytic
conductivity detection, described in a method submitted by DowElanco.
The quantitative limit of the method is 0.05 micrograms/gram in
field corn fodder and forage and grain. EPA has provided information on
this method to FDA. Because of the long lead time from establishing
these tolerances to publication, the enforcement
[[Page 18531]]
methodology is being made available in the interim to anyone interested
in pesticide enforcement when requested by mail from: Calvin Furlow,
Public Response Branch, Field Operations Division (7506C), Office of
Pesticide Programs, Environmental Protection Agency, 401 M St., SW.,
Washington, DC 20460. Office location and telephone number; Rm. 1130A,
CM #2, l921 Jefferson Davis Highway, Arlington, VA 22202, (703)-305-
5937.
4. International tolerances. There are no Codex Alimentarius
Commission (Codex) Maximum Residue Levels (MRLs) for clopyralid.
V. Summary of Findings
The analysis for clopyralid using tolerance level residues shows
that the proposed use in the culture of field corn will not cause
exposure to exceed the levels at which the Agency believes there is an
appreciable risk. All population subgroups examined by EPA are exposed
to clopyralid residues at levels below 100 percent of the RfD for
chronic effects.
Based on the information cited above, the Agency has determined
that the establishment of these tolerances will be safe therefore, the
tolerances are established as set forth below.
In addition to the tolerances being amended, since for purposes of
establishing tolerances FQPA has eliminated all distinctions between
raw and processed food, EPA is combining the tolerances that now appear
in Secs. 185.1100 and 186.1100 with the tolerances in Sec. 180.431 and
is eliminating Secs. 185.1100 and 186.1100.
VI. Objections and Hearing Requests
The new FFDCA section 408(g) provides essentially the same process
for persons to ``object'' to a tolerance regulation issued by EPA under
new section 408(e) and (1)(6) as was provided in the old section 408
and in section 409. However, the period for filing objections is 60
days, rather than 30 days. EPA currently has procedural regulations
which governs the submission of objections and hearing requests. These
regulations will require some modification to reflect the new law.
However, until those modifications can be made, EPA will continue to
use those procedural regulations with appropriate adjustments to
reflect the new law.
Any person may, by June 16, 1997, file written objections to any
aspect of this regulation and may also request a hearing on those
objections. Objections and hearing requests must be filed with the
Hearing Clerk, at the address given above (40 CFR 178.20). A copy of
the objections and/or hearing requests filed with the Hearing Clerk
should be submitted to the OPP docket for this rulemaking. The
objections submitted must specify the provisions of the regulation
deemed objectionable and the grounds for the objections (40 CFR
178.25). Each objection must be accompanied by the fee prescribed by 40
CFR 180.33(i). If a hearing is requested, the objections must include a
statement of the factual issue(s) on which a hearing is requested, the
requestor's contentions on such issues, and a summary of any evidence
relied upon by the objector (40 CFR 178.27). A request for a hearing
will be granted if the Administrator determines that the material
submitted shows the following: There is a genuine and substantial issue
of fact; there is a reasonable possibility that available evidence
identified by the requestor would, if established, resolve one or more
of such issues in favor of the requestor, taking into account
uncontested claims or facts to the contrary; and resolution of the
factual issue(s) in the manner sought by the requestor would be
adequate to justify the action requested (40 CFR 178.32). Information
submitted in connection with an objection or hearing request may be
claimed confidential by marking any part or all of that information as
Confidential Business Information (CBI). Information so marked will not
be disclosed except in accordance with procedures set forth in 40 CFR
part 2. A copy of the information that does not contain CBI must be
submitted for inclusion in the public record. Information not marked
confidential may be disclosed publicly by EPA without prior notice.
VII. Public Docket
EPA has established a record for this rulemaking under docket
number [OPP-300473] (including any comments and data submitted
electronically). A public version of this record, including printed,
paper versions of electronic comments, which does not include any
information claimed as CBI, is available for inspection from 8:30 a.m.
to 4 p.m., Monday through Friday, excluding legal holidays. The public
record is located in Room 1132 of the Public Response and Program
Resources Branch, Field Operations Division (7506C), Office of
Pesticide Programs, Environmental Protection Agency, Crystal Mall #2,
1921 Jefferson Davis Highway, Arlington, VA.
Electronic comments may be sent directly to EPA at:
opp-docket@epamail.epa.gov.
Electronic comments must be submitted as an ASCII file avoiding the
use of special characters and any form of encryption.
The official record for this rulemaking, as well as the public
version, as described above will be kept in paper form. Accordingly,
EPA will transfer any copies of objections and hearing requests
received electronically into printed, paper form as they are received
and will place the paper copies in the official rulemaking record which
will also include all comments submitted directly in writing. The
official rulemaking record is the paper record maintained at the
address in ``ADDRESSES'' at the beginning of this document.
VIII. Regulatory Assessment Requirements
Under Executive Order 12866 (58 FR 51735, Oct. 4, 1993), this
action is not a ``significant regulatory action'' and since this action
does not impose any information collection requirements subject to
approval under the Paperwork Reduction Act, 44 U.S.C. 3501 et seq., it
is not subject to review by the Office of Management and Budget. In
addition, this action does not impose any enforceable duty, or contain
any ``unfunded mandates'' as described in Title II of the Unfunded
Mandates Reform Act of 1995 (Pub. L. 104-4), or require prior
consultation as specified by Executive Order 12875 (58 FR 58093,
October 28, l993, special considerations as required by Executive Order
12898 (59 FR 7629, February 16, l994).
Because tolerances established on the basis of a petition under
section 408(d) of FFDCA do not require issuance of a proposed rule, the
regulatory flexibility analysis requirements of the Regulatory
Flexibility Act (RFA), 5 U.S.C. 604(a), do not apply. Prior to the
recent amendment of the FFDCA, EPA had treated such rulemakings as
subject to the RFA; however, the amendments to the FFDCA clarify that
no proposal is required for such rulemakings and hence that the RFA is
inapplicable. Nonetheless, the Agency has previously assessed whether
establishing tolerances or exemptions from tolerance, raising tolerance
levels, or expanding exemptions adversely impact small entities and
concluded, as a generic matter, that there is no adverse impact. (46 FR
24950) (May 4, l981).
Pursuant to 5 U.S.C. 801(a)(1)(A), EPA submitted 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
General Accounting Office prior to publication of the rule in today's
Federal Register. This rule is
[[Page 18532]]
not a major rule as defined by 5 U.S.C. 804(2).
List of Subjects
40 CFR Part 180
Environmental protection, Administrative practice and procedure,
Agricultural commodities, Pesticides and pests, Reporting and
recordkeeping requirements.
40 CFR Part 185
Environmental protection, Food additives, Pesticides and pests.
40 CFR Part 186
Environmental protection, Animal feeds, Pesticides and pests.
Dated: April 4, 1997.
Stephen L. Johnson,
Director, Registration Division, Office of Pesticide Programs.
Therefore, 40 CFR chapter I is amended as follows:
PART 180--[AMENDED]
1. In part 180:
a. The authority citation for part 180 continues to read as
follows:
Authority: 21 U.S.C. 346a and 371.
b. Section 180.431 is amended as follows:
i. In paragraph (a) by revising the introductory text, and adding
new entries to the table.
ii. In paragraph (b) by removing the text, and adding a paragraph
heading.
iii. In paragraph (c) by the redesignating the text as paragraph
(b), by adding a new paragraph heading, and by reserving it.
iv. By adding paragraph (d) with a paragraph heading only and
reserving it.
Sec. 180.431 Clopyralid; tolerances for residues.
(a) General. Tolerances are established for combined residues of
the herbicide clopyralid (3,6-dichloro-2-pyridinecarboxylic acid) in or
on the following commodities:
------------------------------------------------------------------------
Parts per
Commodity million
------------------------------------------------------------------------
* * * * *
Corn, field, fodder........................................ 10.0
Corn, field, forage........................................ 3.0
Corn, field, grain......................................... 1.0
Corn, field, milling fractions............................. 1.5
* * * * *
------------------------------------------------------------------------
(b) Section 18 emergency exemptions. * * *
(c) Tolerances with regional registrations. [Reserved]
(d) Indirect or inadvertent residues. [Reserved]
PART 185--[AMENDED]
2. In part 185:
a. The authority citation for part 185 continues to read as
follows:
Authority: 21 U.S.C. 346a and 348.
Sec. 185.1100 [Removed]
b. By removing Sec. 185.1100 Clopyralid.
PART 186--[AMENDED]
3. In part 186:
a. The authority citation for part 186 continues to read as
follows:
Authority: 21 U.S.C. 342, 348 and 701.
Sec. 186.1100 [Removed]
b. By removing Sec. 186.1100 Clopyralid.
[FR Doc. 97-9372 Filed 4-15-97; 8:45 am]
BILLING CODE 6560-50-F
