Organophosphate Pesticides: Preliminary OP Cumulative Risk Assessment
Note: This information is provided for reference purposes only. Although the information provided here was accurate and current when first created, it is now outdated.
December 3, 2001: EPA released today its preliminary assessment of the cumulative risks of organophosphorus pesticides. EPA considers the results to be preliminary and is seeking both scientific peer review and widespread public comment on its analysis and the many new scientific techniques used to develop the risk assessment. EPA will soon open a comment period in which the public and all interested parties are invited to submit comments on the preliminary assessments. Comments should directly relate to the issues and information in the assessment.
The Agency is examining the results of these analyses. Therefore, it is too soon to draw firm conclusions about risks or consider risk management possibilities. The Agency cautions against premature conclusions based on this preliminary assessment, and against any use of information contained in these documents out of their full context. The risk mitigation measures that have already been taken on individual members of this group of pesticides have led to significant reduction in potential risk. The Agency is reviewing the results of the assessment to determine if any issues may need to be addressed related to food commodities, drinking water and residential uses. However, EPA has confidence in the overall safety of our food supply and emphasized the importance of eating a varied diet rich in fruits and vegetables.
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Due to some difficulties with the software used to generate these electronic files, the page numbering in individual sections may not exactly match the table of contents. The content of the document is accurate. For additional information on the Preliminary Organophosphate Risk Assessment, please call (703) 308-8000 .
Relative Potency Factors (4/17/2002)
Table of Contents (536 KB)
Glossary / Acronyms (119 KB)
Technical Executive Summary (98 KB)
I. Preliminary OP Cumulative Risk Assessment
A. Introduction (64 KB)
B. Hazard / Relative Potency Factor (RPF) (1,000 KB)
C. Food (147 KB)
D. Residential (99 KB)
E. Water (4,240 KB)
F. Cumulative Assessment (776 KB)
G. Risk Characterization (166 KB)
H. Future Work (60 KB)
I. References (107 KB)
II. Regional Assessments
A. Region1 -- Heartland (5.79 MB)
B. Region 2-- Northern Crescent (2.44 MB)
C. Region 3 -- Northern Great Plains (4.45 MB)
D. Region 4 -- Prairie Gateway (5.42 MB)
E. Region 5 -- Eastern Uplands (3.75 MB)
F. Region 6 -- Southern Seaboard (3.67 MB)
G. Region 7a -- North Fruitful Rim, California (2.21 MB)
H. Region 7b -- South Fruitful Rim, California (2.02 MB)
I. Region 8 -- Basin and Range (2.79 MB)
J. Region 9 -- Mississippi portal (3.04 MB)
K. Region 10 -- North West Fruitful Rim (2.09 MB)
L. Region 11 -- Texas Fruitful Rim (1.68 MB)
M. Region 12 -- Florida Fruitful Rim (923 KB)
A. Introduction (10 KB)
B. Hazard / Relative Potency Factor (RPF)
1. Technical Aspects of Dose-Response Analysis (2,100 KB)
2. Dose-Response Curves (4,660 KB)
4. R Programs for the Revised Analysis (105 KB)
D. Residential (9 KB)
2. Summary of State Monitoring Programs (59 KB)