Source: https://www.federalregister.gov/documents/2011/09/09/2011-23159/dicamba-pesticide-tolerances
Timestamp: 2017-08-18 03:43:16
Document Index: 476481698

Matched Legal Cases: ['art 178', 'art 180', 'art 178', 'art 178', 'art 2', 'art 158']

Federal Register :: Dicamba; Pesticide Tolerances
Dicamba; Pesticide Tolerances
A Rule by the Environmental Protection Agency on 09/09/2011
This regulation is effective September 9, 2011. Objections and requests for hearings must be received on or before November 8, 2011, and must be filed in accordance with the instructions provided in 40 CFR part 178 (see also Unit I.C. of the SUPPLEMENTARY INFORMATION).
76 FR 55804
55804-55807 (4 pages)
EPA-HQ-OPP-2010-0496
FRL-8881-6
2011-23159
Dicamba. Acute and Chronic Dietary Exposure Assessments of...
Dicamba. Occupational and Residential Exposure Assessment for...
Dicamba and Dicamba BAPMA Salt: Human-Health Risk Assessment...
2,4-D and Dicamba: Petition for the Establishment of...
Notice of Filing- Dicamba on Teff (PP 0E7779)
Company Notice of Filing
https://www.federalregister.gov/d/2011-23159 https://www.federalregister.gov/d/2011-23159
This regulation establishes tolerances for residues of dicamba in or on teff, forage; teff, grain; teff, straw; and teff, hay. Interregional Research Project Number 4 (IR-4) requested these tolerances under the Federal Food, Drug, and Cosmetic Act (FFDCA).
EPA has established a docket for this action under docket identification (ID) number EPA-HQ-OPP-2010-0496. All documents in the docket are listed in the docket index available at http://www.regulations.gov. Although listed in the index, some information is not publicly available, e.g., Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Certain other material, such as copyrighted material, is not placed on the Internet and will be publicly available only in hard copy form. Publicly available docket materials are available in the electronic docket at http://www.regulations.gov, or, if only available in hard copy, at the OPP Regulatory Public Docket in Rm. S-4400, One Potomac Yard (South Bldg.), 2777 S. Crystal Dr., Arlington, VA. The Docket Facility is open from 8:30 a.m. to 4 p.m., Monday through Friday, excluding legal holidays. The Docket Facility telephone number is (703) 305-5805.
You may access a frequently updated electronic version of EPA's tolerance regulations at 40 CFR part 180 through the Government Printing Office's e-CFR site at http://ecfr.gpoaccess.gov/​cgi/​t/​text/​text-idx?​&​c=​ecfr&​tpl=​/​ecfrbrowse/​Title40/​40tab_​02.tpl. To access the harmonized test guidelines referenced in this document electronically, please go http://www.epa.gov/​ocspp and select “Test Methods and Guidelines.”
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-2010-0496 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 November 8, 2011. 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 that does not contain any CBI for inclusion in the public docket. Information not marked Start Printed Page 55805confidential pursuant to 40 CFR part 2 may be disclosed publicly by EPA without prior notice. Submit a copy of your non-CBI objection or hearing request, identified by docket ID number EPA-HQ-OPP-2010-0496, by one of the following methods:
In the Federal Register of October 22, 2010 (75 FR 65321) (FRL-8851-1), EPA issued a notice pursuant to section 408(d)(3) of FFDCA, 21 U.S.C. 346a(d)(3), announcing the filing of a pesticide petition (PP 0E7779) by IR-4, 500 College Rd. East, Suite 201W, Princeton, NJ 08540. The petition requested that 40 CFR 180.227 be amended by establishing a tolerance for residues of the herbicide dicamba, 3,6-dichloro-o-anisic acid, and its metabolite 3,6-dichloro-5-hydroxy-o-anisic acid (5-OH dicamba), in or on teff, forage at 90.0 parts per million (ppm); teff, grain at 6.0 ppm; teff, straw at 30.0 ppm; and teff, hay at 40.0 ppm. That notice referenced a summary of the petition prepared on behalf of IR-4 by Helena Chemical Company, the registrant, which is available in the docket, http://www.regulations.gov. There were no comments received in response to the notice of filing.
Based upon review of the data supporting the petition, EPA has revised the tolerance expression for all established commodities to be consistent with current Agency policy. The reason for this change is explained in Unit IV.C.
Consistent with section 408(b)(2)(D) of FFDCA, and the factors specified in section 408(b)(2)(D) of FFDCA, 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 dicamba including exposure resulting from the tolerances established by this action. EPA's assessment of exposures and risks associated with dicamba follows.
In the Federal Register of April 2, 2008 (73 FR 17914) (FRL-8356-6), EPA published a final rule establishing tolerances for combined residues of the herbicide dicamba, 3,6-dichloro-o-anisic acid, and its metabolite, 3,6-dichloro-5-hydroxy-o-anisic acid in or on corn, sweet, forage at 0.50 ppm; corn, sweet, kernel plus cob with husks removed 0.04 ppm; and corn, sweet, stover at 0.50 ppm, based on EPA's conclusion that aggregate exposure to dicamba is safe for the general population, including infants and children. Since 2008, there have been no additional tolerance actions for dicamba.
As noted in this unit, the current action concerns a tolerance for dicamba on teff. Teff is an intermediate grass that is morphologically and taxonomically similar to other cereal grains, including wheat. It is used to make flour in a manner similar to wheat and other cereal grains. EPA recently assessed the proposed use of dicamba on teff. In that assessment, EPA determined that aggregate dicamba exposures and risks will not increase as a result of the addition of the proposed teff uses to the uses assessed as part of the 2008 rulemaking. Teff is not included in the Continuing Survey of Food Intakes by Individuals (CSFII). However, because it is used to make flour in a manner similar to wheat and other cereal grains, it will likely substitute in the diet for cereal grain foods which will contain similar residues of dicamba; therefore, a significant increase in dietary exposure to residues of dicamba from consumption of teff-containing foods will not occur. Furthermore, residues of dicamba in teff livestock feeds will be similar to those in other forages, hays, and silages for which tolerances of dicamba are currently established. As such, there would be no increase in the livestock dietary burden should teff be substituted in the livestock diet for other hays and silages; residues in meat, milk, poultry and eggs will remain the same.
Further information about EPA's risk assessment and determination of safety for this action can be found at http://www.regulations.gov in document “2,4-D and Dicamba: Petition for the Establishment of Tolerances on Teff; Request for Registration of Latigo (EPA Reg. No. 5905-564) on Teff.” in docket ID number EPA-HQ-OPP-2010-0496. Except as supplemented by the information described in this unit, EPA is relying on the safety finding in the 2008 rulemaking and the risk assessment underlying that action in establishing the tolerances for dicamba on teff, forage; teff, grain; teff, straw; and teff, hay. Further information regarding the safety finding for the last rulemaking can be found in the Federal Register of April 2, 2008 (73 FR 17917) (FRL-8356-6), at http://www.epa.gov/​fedrgstr/​EPA-PEST/​2008/​April/​Day-02/​p6674.htm.
For the 2008 rulemaking, the toxicity database was considered complete. However, recent changes to 40 CFR part 158 imposed new data requirements for immunotoxicity testing (OPPTS Guideline 870.7800) and acute and subchronic neurotoxicity testing (OPPTS Guideline 870.6200) for pesticide registration. The toxicity database for dicamba includes acceptable acute and subchronic neurotoxicity studies; therefore, the requirements for the neurotoxicity screening battery have been met. Additionally, an immunotoxicity study was recently submitted and is currently under review. A screening level review of this study indicates that no effects, including immunotoxic effects, were observed at the highest dose tested of approximately 307 milligrams/kilograms(mg/kg/day). This value is higher than the doses currently used for risk assessment; therefore, risk assessment endpoints will not change and the toxicity database is considered complete.
Based upon the 2008 rulemaking and the other information discussed in this unit, EPA concludes that there is a Start Printed Page 55806reasonable certainty that no harm will result to the general population, and to infants and children, from aggregate exposure to dicamba residues. Refer to the April 2, 2008 (73 FR 17914) (FRL-8356-6) Federal Register document, available at http://www.regulations.gov, for a detailed discussion of the aggregate risk assessments and determination of safety. EPA relies upon those risk assessments and the findings made in the Federal Register document in support of this action.
Adequate enforcement methodologies, Methods I and II—gas chromatography with electron capture detection (GC/ECD), are available to enforce the tolerance expression. The methods are published in the Pesticide Analytical Manual (PAM) Volume II. 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; e-mail address: residuemethods@epa.gov.
The Codex has not established MRLs for dicamba in or on commodities associated with this action.
1. That, as provided in FFDCA section 408(a)(3), the tolerance covers metabolites and degradates of dicamba not specifically mentioned; and
2. That compliance with the specified tolerance levels is to be determined by measuring only the specific compounds mentioned in the tolerance expression.
Therefore, tolerances are established for residues of dicamba, 3,6-dichloro-o-anisic acid, including its metabolites and degradates, in or on teff, forage at 90.0 ppm; teff, grain at 6.0 ppm; teff, straw at 30.0 ppm; and teff, hay at 40.0 ppm.
2. Section 180.227 is amended by revising the introductory text in paragraphs (a)(1), (2), and (3); and alphabetically adding the following commodities to the table in paragraph (a)(1) to read as follows:
Dicamba; tolerances for residues.
(a) General. (1) Tolerances are established for the residues of the herbicide dicamba (3,6-dichloro-o-anisic Start Printed Page 55807acid), including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerance levels is to be determined by measuring only the sum of the residues of dicamba (3,6-dichloro-o-anisic acid) and its metabolite, 3,6-dichloro-5-hydroxy-o-anisic acid, calculated as the stoichiometric equivalent of dicamba, in or on the following commodities:
Teff, forage 90.0
Teff, grain 6.0
Teff, hay 40.0
Teff, straw 30.0
(2) Tolerances are established for residues of the herbicide dicamba, 3,6-dichloro-o-anisic acid, including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerance levels is to be determined by measuring only the residues of dicamba (3,6-dichloro-o-anisic acid) and its metabolite, 3,6-dichloro-2-hydroxybenzoic acid, calculated as the stoichiometric equivalent of dicamba, in or on the following commodities:
(3) Tolerances are established for residues of the herbicide dicamba, 3,6-dichloro-o-anisic acid, including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerance levels is to be determined by measuring only the residues of dicamba, 3,6-dichloro-o-anisic acid, and its metabolites, 3,6-dichloro-5-hydroxy-o-anisic acid, and 3,6-dichloro-2-hydroxybenzoic acid, calculated as the stoichiometric equivalent of dicamba, in or on the following commodities:
[FR Doc. 2011-23159 Filed 9-8-11; 8:45 am]