[Federal Register Volume 69, Number 250 (Thursday, December 30, 2004)]
[Pages 78410-78411]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 04-28601]



[OPP-426; FRL-7694-8]

Exposure Modeling Work Group; Notice of Public Meeting

AGENCY: Environment Protection Agency (EPA).

ACTION: Notice.


SUMMARY: The Exposure Modeling Work Group (EMWG) will hold a one-day 
meeting on January 11, 2005. This notice announces the location and 
time for the meeting and sets forth the tentative agenda topics.

DATES: The meeting will be held on January 11, 2005, from 9 a.m. to 3 

ADDRESSES: The meeting will be held at the Office of Pesticide Programs 
(OPP), Environmental Protection Agency, Crystal Mall 2, Room 
1126 (Fishbowl), 1801 S. Bell Street, Arlington, VA 22202.

FOR FURTHER INFORMATION CONTACT: Ronald Parker, Environmental Fate and 
Effects Division (7507C), Office of Pesticide Programs, Environmental 
Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460-
0001; telephone number: (703) 305-5505; fax number: (703) 305-6309; e-
mail address:parker.ronald@epa.gov.


I. General Information

A. Does this Action Apply to Me?

    This action is directed to the public in general, and may be of 
particular interest to those persons who are or may be required to 
conduct testing of chemical substances under the Toxic Substances 
Control Act (TSCA), the Federal, Food, Drug, and Cosmetic Act (FFDCA), 
or the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). 
Since other entities may also 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 

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 identification (ID) number OPP-2004-0426. 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 Street, 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 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. 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. 
Once in the system, select ``search,'' then key in the appropriate 
docket ID number.

II. Background

    On a quarterly interval, the Exposure Modeling Workgroup meets to 
discuss current issues in modeling pesticide fate, transport, and 
exposure to pesticides in support of risk assessment in a regulatory 

[[Page 78411]]

III. How Can I Request to Participate in this Meeting?

    You may submit a request to participate in this meeting to the 

IV. Tentative Agenda

A. Welcome and Introductions

B. Old Action Items

C. Brief Updates

     PRZM3.12.2 Evaluation
     Review of Public Comments on EFED's Modeling Scenarios
     Spray Drift Update
     Release of PGW Guidance Document
     WARP daily values methodologies

D. Major Topics

    1. Morning Session
     PRZM Diary -- Silk purse or sow's ear? Comparing the 
predicted occurrence of atrazine in the vadose zone (PRZM3) with 
observed detections in shallow ground water across the United States 
     Comparison of LEACHM and PRZM Modeling to Field Data: 
Effect of Evaporation Simulation on Water Balance and Pesticide 
    2. Afternoon Session
     Root Zone Water Quality Model (RZWQM): Brief Overview and 
Case Study
     Groundwater Modeling for Carbamate Cumulative Assessment
     User-friendly CXTFIT2 Model to Estimate Setback Distances

List of Subjects

    Environmental protection, pesticides, pests, modeling.

    Dated: December 22, 2004.
Ingrid Sunzenauer,
Acting Director, Environmental Fate and Effects Division.

[FR Doc. 04-28601 Filed 12-29-05; 8:45 am]