Carbaryl, Carbofuran, and Methomyl - National Marine Fisheries ...

Interrelated and Interdependent Activities. No interrelated and interdependent
activities are associated with the proposed action.
Registration Information of Pesticide A.i.s under Consultation. As discussed above, the
proposed action encompasses EPA’s registration of the uses (as described by product
labels) of all pesticides containing carbaryl, carbofuran, or methomyl. However, EPA did
not provide copies of all product labels containing these a.i.s. The following descriptions
represent information acquired from review of a sample of current product labels as well
as information conveyed in the BEs, EPA REDs, and other documents.
Carbaryl
Carbaryl, also known by the trade name Sevin, is an NMC insecticide which was first
registered in 1959 for use on cotton. In 2001, EPA identified the NMC insecticides as a
group which shares a common mechanism of toxicity. Therefore, EPA was required to
consider the cumulative effects on human health resulting from exposure to this group of
chemicals when considering whether to establish, modify, or revoke a tolerance for
pesticide residues in food, in accordance with the FQPA (EPA 2008).
Several regulatory documents concerning carbaryl were issued after EPA’s BE of the
analysis of risk of carbaryl to threatened and endangered salmonids (EPA 2003). An
IRED for carbaryl that addressed the potential human health and ecological risks was
signed on June 30, 2003. EPA amended the IRED on October 22, 2004, to incorporate
clarifications and corrections, updated the residential risk assessment to reflect the
voluntary cancellation of the liquid broadcast use of carbaryl on residential turf to address
post-application risk to toddlers identified in the 2003 IRED, and addressed issues
regarding labeling of carbaryl formulations for mitigating potential hazards to bees. In
addition, mitigation measures required in the 2004 amended IRED included cancellation
of certain uses and application methods, reduction of application rates, application
prohibitions, personal protective equipment (PPE) and engineering control (EC)
requirements, and extension of restricted-entry intervals (REIs) for post-application
exposure (EPA 2008).
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