On April 5, the U.S. EPA published an order denying a petition requesting to revoke all tolerance residues and to cancel all registrations for chlorpyriphos. This petition was filed in September 2007 by the Pesticide Action Network North America and the Natural Resources Defense Council.
The Order is effective April 5, 2017. Objections and requests for hearings must be received by June 5, 2017. Proposed revocations will no longer display in the Global MRL Database on April 6, 2017.