October 28 - 31, 2008: Selected Issues Associated with the Risk Assessment Process for Pesticides with Persistent, Bioaccumulative, and Toxic Characteristics

White Paper on Methods for Assessing Ecological Risks of Pesticides with Persistent, Bioaccumulative and Toxic Characteristics (PDF) (221 pp, 2.2MB)

Appendix C - Persistence Section - Part 2: PRZM/EXAMS Input and Output Summary for Example Pesticides (PDF) (156 pp, 171KB)

Reference Documents

Overview of the Ecological Risk Assessment Process in the Office of Pesticide Programs, US EPA, Endangered and Threatened Species Effects Determinations (PDF) (122 pp, 297KB)

PRZM-3, A Model for Predicting Pesticide and Nitrogen Fate in the Crop Root and Unsaturated Soil Zones: Users Manual for Release 3.12.2 (PDF) (429 pp, 8.4MB)

Exposure Analysis Modeling System (EXAMS): User Manual and System Documentation (PDF) (205 pp, 2.6MB)

User Manual for EXPRESS, the "EXAMS-PRZM Exposure Simulation Shell" (PDF) (41 pp, 2.6MB)

Soil and Water Assessment Tool Theoretical Documentation, Version 2005 (PDF) (494 pp, 2.8MB)

Methodology for Deriving Ambient Water Quality Criteria for the Protection of Human Health (PDF) (210 pp, 2.1MB)

OECD GUIDELINE - Hydrolysis as a Function of pH (PDF) (15 pp, 73KB)

OECD GUIDELINE - Aerobic and Anaerobic Transformation in Aquatic Sediment Systems (PDF) (19 pp, 382KB)

OECD GUIDELINE - Aerobic and Anaerobic Transformation in Soil (PDF) (17 pp, 105KB)

OECD GUIDELINE - Leaching in Soil Columns (PDF) (15 pp, 103KB)

OECD GUIDELINE - Adsorption - Desorption Using a Batch Equilibrium Method (PDF) (44 pp, 360KB)

OECD GUIDELINE - PROPOSAL FOR UPDATING GUIDELINE 305 Bioconcentration: Flow-through Fish Test (PDF) (23 pp, 66KB)

NAFTA Guidance Document For Conducting Terrestrial Field Dissipation Studies (PDF) (58 pp, 375KB)

Pesticide Assessment Guidelines, Subdivision N, Chemistry Requirements, Environmental Fate (PDF) (70 pp, 3.5MB)

A Food Web Bioaccumulation Model for Organic Chemicals in Aquatic Ecosystems. Environmental Toxicology and Chemistry 23(1):2343-2355. (Hardcopy.)

USEPA Science Advisory Board Consultation Document Proposed Revisions to Aquatic Life Guidelines Tissue-Based Criteria for "Bioaccumulative" Chemicals (PDF) (61 pp, 522KB)

CEMC. 2007. Users Guide: Canadian Environmental Modeling Centre Water Quality Model and the Simon Fraser University Food Web Model (PDF) (38 pp, 1.7MB)

PRZM-AGRO SHELL VERSION 1.2f RELEASE AND INSTALLATION NOTES (PDF) (2 pp, 16KB)

OPPTS Ecological Effects Test Guidelines

USDA Agricultural Non-Point Source Pollution Model (AGNPS)

USEPA Water Quality Analysis Simulation Program (WASP) Model

2006 Science Advisory Board Response to EPA's Proposed Revisions to Water Quality Criteria Guidelines (includes SAB response to Tissue-based Aquatic Life Criteria) (PDF) (151 pp, 1.1MB)

NOTE: All documents for this meeting (including additional background documents and public comments) will be available in the OPP Regulatory Public Docket (Docket # EPA-HQ-OPP-2008-0550). Some of these documents may be available online in the FDMS Docket System located at http://www.regulations.gov. Copyright protected material and material otherwise subject to protection is not placed on the Internet and will be publicly available only at the OPP Regulatory Public Docket in Rm. S-4400, One Potomac Yard (South Bldg), 2777 S. Crystal Dr., Arlington, VA. The hours of operation of this Docket Facility are from 8:30 a.m. to 4:00 p.m., Monday through Friday, excluding legal holidays. The Docket Facility telephone number is (703) 305-5805.

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