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EPA registers pesticides under Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). In addition, EPA periodically reevaluates pesticides to ensure their safety in light of new scientific and regulatory information. In this section you will find the primary documents produced to support the registration and review processes. In addition, you can click on the process icon below to filter the documents.

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  • 1 - 15 of 23
Document Document
Chlorpyrifos Draft Biological Evaluation Biological Opinion02/22/2017Other
Chlorpyrifos Registration Review; Preliminary Volatilization Assessment; Extension of Comment Period Federal Register (FRN)03/06/2013Registration Review
Chlorpyrifos Registration Review; Preliminary Evaluation of the Potential Risk From Volatilization; Notice of Availability Federal Register (FRN)02/06/2013Registration Review
Chlorpyrifos Volatilization Assessment: Guide to Commenters Related Document02/06/2013Registration Review
Chlorpyrifos; Preliminary Evaluation of the Potential Risks from Volatilization Related Document01/31/2013Registration Review
January 2013 Response to Chlorpyrifos Petition Related Document01/25/2013Registration Review
EPA Interim Response to Chlorpyrifos PetitionRelated Document12/18/2012Registration Review
Spray Drift Mitigation Decision for Chlorpyrifos Related Document07/16/2012Registration Review
EPA’s Partial Response to Chlorpyrifos Petition by NRDC & PANNARelated Document07/16/2012Registration Review
Chlorpyrifos; Evaluation of the Potential Risks from Spray Drift and the Impact of Potential Risk Reduction Measures Related Document07/13/2012Registration Review
FIFRA Scientific Advisory Panel; Notice of Public Meeting Federal Register (FRN)02/15/2012Registration Review
Tolerance Actions: Atrazine, Chloroneb, Chlorpyrifos, Clofencet, Endosulfan, et al. Federal Register (FRN)09/14/2011Reregistration
Chlorpyrifos Registration Review; Preliminary Human Health Risk Assessment; Extension of Comment Period Federal Register (FRN)08/24/2011Registration Review
Chlorpyrifos Preliminary Human Health Risk Assessment for Registration ReviewRisk Assessment06/30/2011Registration Review
Preliminary Human Health Risk Assessments; Availability: Chlorpyrifos Registration ReviewFederal Register (FRN)06/29/2011Registration Review
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