(AGENPARL) – lun 02 dicembre 2024 Issued: Dec 2, 2024 (2:40pm EST)
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EPA Proposes Rule to Revoke Most Food Uses of the Insecticide Chlorpyrifos
WASHINGTON – Today, Dec. 2, the U.S. Environmental Protection Agency
announced a proposed rule to revoke tolerances for chlorpyrifos, which
establish the amount of a pesticide that is allowed on food. This rule revokes
all tolerances for chlorpyrifos, except for those tolerances associated with
the 11 food and feed crops that remain registered.  EPA is taking this action
in response to a decision by the U.S Court of Appeals for the Eighth
Circuit.  This action will support EPA efforts to cancel most uses of
chlorpyrifos on food to reduce exposure and protect public health.
“EPA continues to prioritize the health of children,” said Assistant
Administrator for the Office of Chemical Safety and Pollution Prevention
Michal Freedhoff.  “This proposed rule is a critical step forward as we
work to reduce chlorpyrifos in or on food and to better protect people,
including infants and children, from exposure to chemicals that are harmful to
human health.”
Chlorpyrifos is an organophosphate (OP) insecticide that was used for a large
variety of agricultural uses, including soybeans, fruit and nut trees,
vegetables, and other row crops, as well as non-food uses. At high levels, OP
exposures can result in neurological effects such as tremors, fatigue and
nausea. There is also concern for exposures to pregnant women and children
since chlorpyrifos has been associated with neurodevelopmental effects
indicating it could impact the normal development of the nervous system during
pregnancy or childhood.
In a final rule issued in August 2021, EPA revoked all tolerances for
chlorpyrifos, which establish an amount of chlorpyrifos that is allowed on
food, effectively stopping the use of chlorpyrifos on all food and animal
feed. EPA took this action in response to an April 2021 order from the U.S.
Court of Appeals for the Ninth Circuit for the agency to issue—within 60
days—a final rule addressing the use of chlorpyrifos in food or feed crops,
without taking public comment or engaging in “further fact-finding.” 
On Nov. 2, 2023, the U.S. Court of Appeals for the Eighth Circuit vacated
EPA’s August 2021 rule and reinstated the chlorpyrifos tolerances. On Feb.
5, 2024, EPA issued a Federal Register notice to amend the Code of Federal
Regulations to reflect the court’s reinstatement of those tolerances. At
this time, and as a result of the court decision, all the chlorpyrifos
tolerances have been reinstated and are currently in effect. 
Since the Eighth Circuit issued its ruling, EPA has worked with the
chlorpyrifos registrants to further reduce pesticide exposures by limiting the
registered uses of chlorpyrifos on food to be consistent with the 11 uses
referenced by the Eighth Circuit and identified in the 2020 Proposed Interim
Registration Review Decision (PID). These 11 food uses are alfalfa, apple,
asparagus, cherry (tart), citrus, cotton, peach, soybean, strawberry, sugar
beets and wheat (spring and winter) and are limited to specific states that
were assessed in the 2020 PID. Based on the available data, retaining only the
11 food uses could decrease average annual pounds of chlorpyrifos applied in
the U.S. by 70% as compared to historical usage. 
The registration review process for chlorpyrifos is ongoing. EPA plans to
issue an amended PID for chlorpyrifos for public comment followed by an
Interim Decision (ID) in 2026. 
Upon publication in the Federal Register, the proposed rule will be available
at docket ID EPA-HQ-OPP-2024-0431 at Regulations.gov for public comment for 60
days. EPA will continue to keep the public updated as it evaluates and takes
any actions related to chlorpyrifos pesticide use. For more information, view
a prepublication version the Federal Register notice.
Learn more about this pesticide at EPA’s chlorpyrifos webpage. 
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