Skip to Content


Monocarbamide Dihydrogen Sulfate (Urea Sulfate); Tolerance Reassessment Decision for Low Risk Pesticide; Notice of Availability

Document Details

Information about this document as published in the Federal Register.

Document Statistics
Document page views are updated periodically throughout the day and are cumulative counts for this document including its time on Public Inspection. Counts are subject to sampling, reprocessing and revision (up or down) throughout the day.
Published Document

This document has been published in the Federal Register. Use the PDF linked in the document sidebar for the official electronic format.

Start Preamble


Environmental Protection Agency (EPA).




This notice announces the availability of EPA's Tolerance Reassessment Decision (TRED) for the pesticide monocarbamide dihydrogen sulfate (Urea sulfate), and opens a public comment period on this document, related risk assessments, and other support documents. EPA has reviewed the low risk pesticide monocarbamide dihydrogen sulfate (Urea sulfate) through a modified, streamlined version of the public participation process that the Agency uses to involve the public in developing pesticide tolerance reassessment and reregistration decisions. Through the tolerance reassessment program, EPA is ensuring that all pesticides meet current health and food safety standards.


Comments must be received on or before April 2, 2007.


Submit your comments, identified by docket identification (ID) number EPA-HQ-OPP-2007-0007, by one of the following methods:

Federal eRulemaking Portal: Follow the on-line instructions for submitting comments.

  • Mail: Office of Pesticide Programs (OPP) Regulatory Public Docket (7502P), Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460-0001.
  • Delivery: OPP Regulatory Public Docket (7502P), Environmental Protection Agency, Rm. S-4400, One Potomac Yard (South Building), 2777 S. Crystal Drive, Arlington, VA. Deliveries are only accepted during the Docket's normal hours of operation (8:30 a.m. to 4 p.m., Monday through Friday, excluding legal holidays). Special arrangements should be made for deliveries of boxed information. The Docket telephone number is (703) 305-5805.

Instructions: Direct your comments to docket ID number EPA-HQ-OPP-2007-0007. EPA's policy is that all comments received will be included in the docket without change and may be made available on-line at, including any personal information provided, unless the comment includes information claimed to be Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Do not submit information that you consider to be CBI or otherwise protected through or e-mail. The Federal website is an “anonymous access” system, which means EPA will not know your identity or contact information unless you provide it in the body of your comment. If you send an e-mail comment directly to EPA without going through, your e-mail address will be automatically captured and included as part of the comment that is placed in the docket and made available on the Internet. If you submit an electronic comment, EPA recommends that you include your name and other contact information in the body of your comment and with any disk or CD-ROM you submit. If EPA cannot read your comment due to technical difficulties and cannot contact you for clarification, EPA may not be able to consider your comment. Electronic files should avoid the use of special characters, any form of encryption, and be free of any defects or viruses.

Docket: All documents in the docket are listed in the docket index. Although listed in the index, some information is not publicly available, e.g., CBI or other Start Printed Page 4504information 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 either in the electronic docket at, or, if only available in hard copy, at the OPP Regulatory Public Docket in Rm. S-4400, One Potomac Yard (South Building), 2777 S. Crystal Drive, Arlington, VA. The hours of operation of this Docket Facility are from 8:30 a.m. to 4 p.m., Monday through Friday, excluding legal holidays. The Docket telephone number is (703) 305-5805.

Start Further Info


Bentley C. Gregg, Special Review and Reregistration Division (7508P), Office of Pesticide Programs, Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460-0001; telephone number: 703-308-8178; fax number: 703-308-7070; e-mail address:

End Further Info End Preamble Start Supplemental Information


I. General Information

A. Does this Action Apply to Me?

This action is directed to the public in general, and may be of interest to a wide range of stakeholders including environmental, human health, and agricultural advocates; the chemical industry; pesticide users; and members of the public interested in the sale, distribution, or use of pesticides. Since others also may be interested, the Agency has not attempted to describe all the specific entities that may be affected by this action. If you have any questions regarding the applicability of this action to a particular entity, consult the person listed under FOR FURTHER INFORMATION CONTACT.

B. What Should I Consider as I Prepare My Comments for EPA?

1. Submitting CBI. Do not submit this information to EPA through or e-mail. Clearly mark the part or all of the information that you claim to be CBI. For CBI information in a disk or CD ROM that you mail to EPA, mark the outside of the disk or CD ROM as CBI and then identify electronically within the disk or CD ROM the specific information that is claimed as CBI. In addition to one complete version of the comment that includes information claimed as CBI, a copy of the comment that does not contain the information claimed as CBI must be submitted for inclusion in the public docket. Information so marked will not be disclosed except in accordance with procedures set forth in 40 CFR part 2.

2. Tips for preparing your comments. When submitting comments, remember to:

i. Identify the document by docket ID number and other identifying information (subject heading, Federal Register date and page number).

ii. Follow directions. The Agency may ask you to respond to specific questions or organize comments by referencing a Code of Federal Regulations (CFR) part or section number.

iii. Explain why you agree or disagree; suggest alternatives and substitute language for your requested changes.

iv. Describe any assumptions and provide any technical information and/or data that you used.

v. If you estimate potential costs or burdens, explain how you arrived at your estimate in sufficient detail to allow for it to be reproduced.

vi. Provide specific examples to illustrate your concerns and suggest alternatives.

vii. Explain your views as clearly as possible, avoiding the use of profanity or personal threats.

viii. Make sure to submit your comments by the comment period deadline identified.

II. Background

A. What Action is the Agency Taking?

EPA has reassessed the uses of monocarbamide dihydrogen sulfate (Urea sulfate); also known as Enquik, reassessed one existing exemption from the requirement for a tolerance, and on June 27, 2005, reached a tolerance reassessment decision for this low risk pesticide. Urea sulfate is used primarily as an active ingredient in herbicides and desiccants on agricultural crops. The Agency has determined that urea sulfate readily degrades to urea and sulfate ions in the environment and in the human body. The Agency is now issuing for comment the resulting Report on Food Quality Protection Act (FQPA) Tolerance Reassessment Progress and Risk Management Decision for monocarbamide dihydrogen sulfate (Urea sulfate), known as a TRED, as well as related risk assessments and technical support documents.

EPA developed the monocarbamide dihydrogen sulfate (Urea sulfate) also known as Enquik, TRED through a modified, streamlined version of its public process for making tolerance reassessment and reregistration eligibility decisions. Through these programs, the Agency is ensuring that pesticides meet current standards under the Federal Food, Drug, and Cosmetic Act (FFDCA) and the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), as amended by FQPA. EPA must review tolerances and tolerance exemptions that were in effect when the FQPA was enacted, to ensure that these existing pesticide residue limits for food and feed commodities meet the safety standard established by the new law. Tolerances are considered reassessed once the safety finding has been made or a revocation occurs. EPA has reviewed and made the requisite safety finding for the monocarbamide dihydrogen sulfate (Urea sulfate) tolerances included in this notice.

Although the monocarbamide dihydrogen sulfate (Urea sulfate) TRED was signed on June 27, 2005, certain components of the document, which did not affect the final regulatory decision, were undergoing final editing at that time. These components, including the summary of labeling changes, appendices, and other relevant information, have been added to the monocarbamide dihydrogen sulfate (Urea sulfate) TRED document. In addition, subsequent to signature, EPA identified several minor errors and ambiguities in the document. Therefore, for the sake of accuracy, the Agency also has included the appropriate error corrections, amendments, and clarifications. None of these additions or changes alter the conclusions documented in the June 27, 2005 monocarbamide dihydrogen sulfate (Urea sulfate) TRED. All of these changes are described in detail in an errata memorandum which is included in the public docket for monocarbamide dihydrogen sulfate (Urea sulfate).

EPA is applying the principles of public participation to all pesticides undergoing reregistration and tolerance reassessment. The Agency's Pesticide Tolerance Reassessment and Reregistration; Public Participation Process, published in the Federal Register of May 14, 2004 (69 FR 26819) (FRL-7357-9) explains that in conducting these programs, the Agency is tailoring its public participation process to be commensurate with the level of risk, extent of use, complexity of issues, and degree of public concern associated with each pesticide. EPA can expeditiously reach decisions for pesticides like monocarbamide dihydrogen sulfate (Urea sulfate), which pose no risk concerns, affect few stakeholders, and require no risk mitigation. Once EPA assesses uses and risks for such low risk pesticides, the Agency may go directly to a decision and prepare a document summarizing its findings, such as the monocarbamide dihydrogen sulfate (Urea sulfate) TRED.Start Printed Page 4505

The tolerance reassessment program is being conducted under Congressionally mandated time frames, and EPA recognizes the need both to make timely decisions and to involve the public in finding ways to effectively mitigate pesticide risks. Monocarbamide dihydrogen sulfate (Urea sulfate), however, poses no risks that require mitigation. The Agency therefore is issuing the monocarbamide dihydrogen sulfate (Urea sulfate) TRED, its risk assessments, and related support documents simultaneously for public comment. The comment period is intended to provide an opportunity for public input and a mechanism for initiating any necessary amendments to the TRED. All comments should be submitted using the methods in ADDRESSES, and must be received by EPA on or before the closing date. These comments will become part of the Agency Docket for monocarbamide dihydrogen sulfate (Urea sulfate). Comments received after the close of the comment period will be marked “late.” EPA is not required to consider these late comments.

EPA will carefully consider all comments received by the closing date and will provide a Response to Comments Memorandum in the Docket and If any comment significantly affects the document, EPA also will publish an amendment to the TRED in the Federal Register. In the absence of substantive comments requiring changes, the decisions reflected in the TRED will be implemented as presented.

B. What is the Agency's Authority for Taking this Action?

Section 408(q) of the FFDCA, 21 U.S.C. 346a(q), requires EPA to review tolerances and exemptions for pesticide residues in effect as of August 2, 1996, to determine whether the tolerance or exemption meets the requirements of section 408(b)(2) or (c)(2) of FFDCA. This review was to be completed by August 3, 2006.

Start List of Subjects

List of Subjects

End List of Subjects Start Signature

Dated: January 23, 2007.

Peter Caulkins,

Acting Director, Special Review and Reregistration Division, Office of Pesticide Programs.

End Signature End Supplemental Information

[FR Doc. E7-1435 Filed 1-30-07; 8:45 am]