After considering public comment and all available studies, EPA has denied the Natural Resources Defense Council’s (NRDC) petition to revoke all tolerances and cancel all registrations of 2,4-dichlorophenoxyacetic acid (2,4-D), a phenoxy herbicide and plant growth regulator that has been used in the U.S. since the 1940s. It is currently found in approximately 600 products registered for agricultural, residential, industrial and aquatic uses. The NRDC had filed the petition in November 2008.
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