[Federal Register Volume 69, Number 185 (Friday, September 24, 2004)]
[Notices]
[Pages 57278-57281]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 04-21510]


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ENVIRONMENTAL PROTECTION AGENCY

[OPP-2004-0219; FRL-7679-8]


Chlorsulfuron Risk Assessments and Preliminary Risk Reduction 
Options (Phase 3 of 4-Phase Process); Notice of Availability

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice.

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SUMMARY: This notice announces the availability of EPA's risk 
assessments, preliminary risk reduction options, and related documents 
for the pesticide chlorsulfuron, and opens a public comment period on 
these documents. The public also is encouraged to suggest risk 
management ideas or proposals to address the risks identified. EPA is

[[Page 57279]]

developing a Reregistration Eligibility Decision (RED) for 
chlorsulfuron through a modified, 4-Phase public participation process 
that the Agency uses to involve the public in developing pesticide 
reregistration and tolerance reassessment decisions. Through these 
programs, EPA is ensuring that all pesticides meet current health and 
safety standards.

DATES: Comments, identified by docket identification (ID) number OPP-
2004-0219, must be received on or before November 23, 2004.

ADDRESSES: Comments may be submitted electronically, by mail, or 
through hand delivery/courier. Follow the detailed instructions as 
provided in Unit I. of the SUPPLEMENTARY INFORMATION.

FOR FURTHER INFORMATION CONTACT: Susan Jennings, Special Review and 
Reregistration Division (7508C), Office of Pesticide Programs, 
Environmental Protection Agency, 1200 Pennsylvania Ave., NW., 
Washington, DC 20460-0001; telephone number: (706) 355-8574; fax 
number: (706) 355-8744; e-mail address:[email protected].

SUPPLEMENTARY 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. How Can I Get Copies of this Document and Other Related Information?

    1. Docket. EPA has established an official public docket for this 
action under docket ID number OPP-2004-0219. The official public docket 
consists of the documents specifically referenced in this action, any 
public comments received, and other information related to this action. 
Although a part of the official docket, the public docket does not 
include Confidential Business Information (CBI) or other information 
whose disclosure is restricted by statute. The official public docket 
is the collection of materials that is available for public viewing at 
the Public Information and Records Integrity Branch (PIRIB), Rm. 119, 
Crystal Mall 2, 1801 S. Bell St., Arlington, VA. This docket 
facility is open from 8:30 a.m. to 4 p.m., Monday through Friday, 
excluding legal holidays. The docket telephone number is (703) 305-
5805.
    2. Electronic access. You may access this Federal Register document 
electronically through the EPA Internet under the ``Federal Register'' 
listings at http://www.epa.gov/fedrgstr/.
     An electronic version of the public docket is available through 
EPA's electronic public docket and comment system, EPA Dockets. You may 
use EPA Dockets at http://www.epa.gov/edocket/ to submit or view public 
comments, access the index listing of the contents of the official 
public docket, and to access those documents in the public docket that 
are available electronically. Once in the system, select ``search,'' 
then key in the appropriate docket ID number.
     Certain types of information will not be placed in the EPA 
Dockets. Information claimed as CBI and other information whose 
disclosure is restricted by statute, which is not included in the 
official public docket, will not be available for public viewing in 
EPA's electronic public docket. EPA's policy is that copyrighted 
material will not be placed in EPA's electronic public docket but will 
be available only in printed, paper form in the official public docket. 
To the extent feasible, publicly available docket materials will be 
made available in EPA's electronic public docket. When a document is 
selected from the index list in EPA Dockets, the system will identify 
whether the document is available for viewing in EPA's electronic 
public docket. Although, not all docket materials may be available 
electronically, you may still access any of the publicly available 
docket materials through the docket facility identified in Unit I.B.1. 
EPA intends to work towards providing electronic access to all of the 
publicly available docket materials through EPA's electronic public 
docket.
     For public commenters, it is important to note that EPA's policy 
is that public comments, whether submitted electronically or in paper, 
will be made available for public viewing in EPA's electronic public 
docket as EPA receives them and without change, unless the comment 
contains copyrighted material, CBI, or other information whose 
disclosure is restricted by statute. When EPA identifies a comment 
containing copyrighted material, EPA will provide a reference to that 
material in the version of the comment that is placed in EPA's 
electronic public docket. The entire printed comment, including the 
copyrighted material, will be available in the public docket.
     Public comments submitted on computer disks that are mailed or 
delivered to the docket will be transferred to EPA's electronic public 
docket. Public comments that are mailed or delivered to the docket will 
be scanned and placed in EPA's electronic public docket. Where 
practical, physical objects will be photographed, and the photograph 
will be placed in EPA's electronic public docket along with a brief 
description written by the docket staff.

C. How and to Whom Do I Submit Comments?

     You may submit comments electronically, by mail, or through hand 
delivery/courier. To ensure proper receipt by EPA, identify the 
appropriate docket ID number in the subject line on the first page of 
your comment. Please ensure that your comments are submitted within the 
specified comment period. Comments received after the close of the 
comment period will be marked ``late.'' EPA is not required to consider 
these late comments. If you wish to submit CBI or information that is 
otherwise protected by statute, please follow the instructions in Unit 
I.D. Do not use EPA Dockets or e-mail to submit CBI or information 
protected by statute.
    1. Electronically. If you submit an electronic comment as 
prescribed in this unit, EPA recommends that you include your name, 
mailing address, and an e-mail address or other contact information in 
the body of your comment. Also include this contact information on the 
outside of any disk or CD ROM you submit, and in any cover letter 
accompanying the disk or CD ROM. This ensures that you can be 
identified as the submitter of the comment and allows EPA to contact 
you in case EPA cannot read your comment due to technical difficulties 
or needs further information on the substance of your comment. EPA's 
policy is that EPA will not edit your comment, and any identifying or 
contact information provided in the body of a comment will be included 
as part of the comment that is placed in the official public docket, 
and made available in EPA's electronic public docket. 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.
    i. EPA Dockets. Your use of EPA's electronic public docket to 
submit comments to EPA electronically is

[[Page 57280]]

EPA's preferred method for receiving comments. Go directly to EPA 
Dockets at http://www.epa.gov/edocket/, and follow the online 
instructions for submitting comments. Once in the system, select 
``search,'' and then key in docket ID number OPP-2004-0219. The system 
is an ``anonymous access'' system, which means EPA will not know your 
identity, e-mail address, or other contact information unless you 
provide it in the body of your comment.
    ii. E-mail. Comments may be sent by e-mail to [email protected], 
Attention: Docket ID number OPP-2004-0219. In contrast to EPA's 
electronic public docket, EPA's e-mail system is not an ``anonymous 
access'' system. If you send an e-mail comment directly to the docket 
without going through EPA's electronic public docket, EPA's e-mail 
system automatically captures your e-mail address. E-mail addresses 
that are automatically captured by EPA's e-mail system are included as 
part of the comment that is placed in the official public docket, and 
made available in EPA's electronic public docket.
    iii. Disk or CD ROM. You may submit comments on a disk or CD ROM 
that you mail to the mailing address identified in Unit I.C.2. These 
electronic submissions will be accepted in WordPerfect or ASCII file 
format. Avoid the use of special characters and any form of encryption.
    2.  By mail. Send your comments to: Public Information and Records 
Integrity Branch (PIRIB) (7502C), Office of Pesticide Programs (OPP), 
Environmental Protection Agency, 1200 Pennsylvania Ave., NW., 
Washington, DC 20460-0001, Attention: Docket ID number OPP-2004-0219.
    3. By hand delivery or courier. Deliver your comments to: Public 
Information and Records Integrity Branch (PIRIB), Office of Pesticide 
Programs (OPP), Environmental Protection Agency, Rm. 119, Crystal Mall 
2, 1801 S. Bell St., Arlington, VA, Attention: Docket ID 
number OPP-2004-0219. Such deliveries are only accepted during the 
docket's normal hours of operation as identified in Unit I.B.1.

D. How Should I Submit CBI to the Agency?

     Do not submit information that you consider to be CBI 
electronically through EPA's electronic public docket or by e-mail. You 
may claim information that you submit to EPA as CBI by marking any part 
or all of that information as CBI (if you submit CBI on disk or CD ROM, 
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 CBI). Information so marked will not be disclosed except in 
accordance with procedures set forth in 40 CFR part 2.
     In addition to one complete version of the comment that includes 
any 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 and EPA's electronic public docket. If you submit 
the copy that does not contain CBI on disk or CD ROM, mark the outside 
of the disk or CD ROM clearly that it does not contain CBI. Information 
not marked as CBI will be included in the public docket and EPA's 
electronic public docket without prior notice. If you have any 
questions about CBI or the procedures for claiming CBI, please consult 
the person listed under FOR FURTHER INFORMATION CONTACT.

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

     You may find the following suggestions helpful for preparing your 
comments:
    1. Explain your views as clearly as possible.
    2. Describe any assumptions that you used.
    3. Provide any technical information and/or data you used that 
support your views.
    4. If you estimate potential burden or costs, explain how you 
arrived at your estimate.
    5. Provide specific examples to illustrate your concerns.
    6. Offer alternatives.
    7. Make sure to submit your comments by the comment period deadline 
identified.
    8. To ensure proper receipt by EPA, identify the appropriate docket 
ID number in the subject line on the first page of your response. It 
would also be helpful if you provided the name, date, and Federal 
Register citation related to your comments.

II. Background

A. What Action is the Agency Taking?

     EPA is releasing for public comment its occupational human health 
and environmental fate and effects risk assessments, preliminary risk 
reduction options, and related documents for chlorsulfuron and 
encouraging the public to suggest risk management ideas or proposals. 
This action only applies to the occupational human health and 
ecological risk assessments for chlorsulfuron. Chlorsulfuron dietary 
and residential aggregate risks were assessed in an Agency action 
published in the Federal Register of August 14, 2002 (67 FR 52866) 
(FRL-7679-8), establishing new tolerances for residues for 
chlorsulfuron in or on grass, forage and grass hay and reassessing all 
other existing tolerances of chlorsulfuron as required by the Federal 
Food, Drug, and Cosmetic Act (FFDCA), as amended by the Food Quality 
Protection Act (FQPA). For information on dietary and residential 
risks, please refer to the earlier notice published in the Federal 
Register.
     EPA developed the risk assessments and preliminary risk reduction 
options for chlorsulfuron through a modified version of its public 
process for making pesticide reregistration eligibility and tolerance 
reassessment decisions. Through these programs, EPA is ensuring that 
pesticides meet current standards under the Federal Insecticide, 
Fungicide, and Rodenticide Act (FIFRA) and the FFDCA.
     Chlorsulfuron is used as a pre- and post-emergent herbicide to 
control a variety of weeds on cereal grains, pasture and rangeland, 
industrial sites, and turf grass. The Agency estimates that 
chlorsulfuron usage averaged approximately 72,000 pounds of active 
ingredient per year to treat over 5.5 million acres of, primarily, 
wheat. Chlorsulfuron is also used by the U.S. Department of Interior 
(Bureau of Land Management) to control invasive weed species.
    EPA is providing an opportunity, through this notice, for 
interested parties to provide comments and input on the Agency's risk 
assessments for chlorsulfuron. Such comments and input could address, 
for example, the availability of additional data to further refine the 
risk assessments, such as plant toxicity data, or could address the 
Agency's risk assessment methodologies and assumptions as applied to 
this specific pesticide. Risks from the use of chlorsulfuron do not 
exceed the Agency's levels of concern for occupational workers, non-
target terrestrial animals, or aquatic animals. However, the use of 
chlorsulfuron does pose risks of concern to non-target plants exposed 
through drift, runoff, or direct application.
    Through this notice, EPA is releasing for public comment its 
preliminary risk reduction options for chlorsulfuron and is providing 
an opportunity for interested parties to provide risk management 
proposals or otherwise comment on risk management. The Agency is 
proposing several preliminary mitigation measures to reduce the risk to 
non-target plants. These mitigation measures include: More specific 
product labels, further application limitations to reduce drift of 
spray,

[[Page 57281]]

vegetative buffer zones to reduce runoff, and restrictions on 
contaminated irrigation water. The Agency expects the proposed 
mitigation measures to reduce, but not eliminate, the exposure to non-
target plants. The Agency is analyzing other possible mitigation 
measures, especially those that could protect endangered plants, and 
would welcome public input and suggestions for additional mitigation 
measures. Considering EPA's preliminary risk reduction options, such 
comments and proposals should further discuss ways to manage 
chlorsulfuron's ecological risks resulting from its use, as discussed 
in the Agency's risk assessments.
    EPA seeks to achieve environmental justice, the fair treatment and 
meaningful involvement of all people, regardless of race, color, 
national origin, or income, in the development, implementation, and 
enforcement of environmental laws, regulations, and policies. To help 
address potential environmental justice issues, the Agency seeks 
information on any groups or segments of the population who, as a 
result of their location, cultural practices, or other factors, may 
have atypical, unusually high exposure to chlorsulfuron, compared to 
the general population.
    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 
the issues, and degree of public concern associated with each 
pesticide. For chlorsulfuron, a modified, 4-Phase process with one 
comment period and ample opportunity for public consultation seems 
appropriate in view of its refined risk assessments and limited uses. 
However, if as a result of comments received during this comment period 
EPA finds that additional issues warranting further discussion are 
raised, the Agency may lengthen the process and include a second 
comment period, as needed. EPA may issue the chlorsulfuron RED for 
public comment.
    All comments should be submitted using the methods in Unit I. of 
the SUPPLEMENTARY INFORMATION, and must be received by EPA on or before 
the closing date. Comments will become part of the Agency Docket for 
chlorsulfuron. Comments received after the close of the comment period 
will be marked ``late.'' EPA is not required to consider these late 
comments.

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

    Section 4(g)(2) of FIFRA as amended directs that, after submission 
of all data concerning a pesticide active ingredient, ``the 
Administrator shall determine whether pesticides containing such active 
ingredient are eligible for reregistration,'' before calling in 
product-specific data on individual end-use products and either 
reregistering products or taking other ``appropriate regulatory 
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 
is to be completed by August 3, 2006.

List of Subjects

    Environmental protection, Pesticides and pests.

    Dated: September 16, 2004.
Debra Edwards,
Director, Special Review and Reregistration Division, Office of 
Pesticide Programs.
[FR Doc. 04-21510 Filed 9-23-04; 8:45 am]
BILLING CODE 6560-50-S