  EPA/OPP Meetings with Stakeholders on Chlorpyrifos 
Spring  -  Summer 2019

May 2, 2019: Meeting with Corteva to Discuss Chlorpyrifos Status 
The EPA met with representatives of the chlorpyrifos registrant, Corteva, to discuss the status of EPA's registration review, and if any additional information is needed from Corteva.  The agency provided an update and Corteva discussed the uses critical to growers in terms of usage and resistance management.  

May 10, 2019 and June 13, 2019: Meetings with Corteva to Discuss Chlorpyrifos Uses
The EPA met with representatives of the chlorpyrifos registrant, Corteva, to discuss uses critical to growers in terms of usage and resistance management across different regions of the U.S.  As the EPA continues to work through the registration review of chlorpyrifos, this additional information may be used in refining the drinking water assessment once provided by the registrant.

June 6, 2019: Meetings with California Department of Pesticide Regulation (CDPR) and the California Almond Board
The EPA met with CDPR and the California Almond Board to discuss the review status of certain conventional pesticides at the EPA and CDPR, including chlorpyrifos.  Both the EPA and CDPR provided an update.

July 10, 2019: Meeting with Corteva to Discuss Chlorpyrifos Oxon Study
The EPA met with Corteva to discuss Corteva's proposed study designed to investigate whether chlorpyrifos oxon as administered through drinking water to rats has the ability to inhibit cholinesterase activity.  The EPA is always open to receipt of data that may help refine its risk assessments and committed to review a protocol for its proposed study.  








