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US Environmental Protection Agency Office of Pesticide Programs Reregistration Eligibility Decision for Dichlorvos (DDVP)�
When EPA concluded the organophosphate (OP) cumulative risk assessment in July 2006, all tolerance reassessment and reregistration eligibility decisions for individual OP pesticides were considered complete. OP Interim Reregistration Eligibility Decisions (IREDs), therefore,are considered completed REDs. OP tolerance reassessment decisions (TREDs) also are considered completed. Combined PDF document consists of the following: • Finalization of Interim Reregistration Eligibility Decisions (IREDs) and Interim Tolerance Reassessment and Risk Management Decisions (TREDs) for the Organophosphate Pesticides, and Completion of the Tolerance Reassessment and ReregistrationEligibility Process for the Organophosphate Pesticides (July 31, 2006) • Dichlorvos (DDVP) IRED

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

WASHINGTON D.C., 20460
OFFICE OF PREVENTION, PESTICIDES AND TOXIC SUBSTANCES

MEMORANDUM

DATE: SUBJECT:

July 31, 2006 Finalization of Interim Reregistration Eligibility Decisions (IREDs) and Interim Tolerance Reassessment and RiskManagement Decisions (TREDs) for the Organophosphate Pesticides, and Completion of the Tolerance Reassessment and Reregistration Eligibility Process for the Organophosphate Pesticides Debra Edwards, Director Special Review and Reregistration Division Office of Pesticide Programs Jim Jones, Director Office of Pesticide Programs

FROM:

TO:

As you know, EPA has completed its assessment of thecumulative risks from the organophosphate (OP) class of pesticides as required by the Food Quality Protection Act of 1996. In addition, the individual OPs have also been subject to review through the individualchemical review process. The Agency’s review of individual OPs has resulted in the issuance of Interim Reregistration Eligibility Decisions (IREDs) for 22 OPs, interim Tolerance Reassessment andRisk Management Decisions (TREDs) for 8 OPs, and a Reregistration Eligibility Decision (RED) for one OP, malathion. 1 These 31 OPs are listed in Appendix A. EPA has concluded, after completing its assessment of the cumulative risks associated with exposures to all of the OPs, that: (1) the pesticides covered by the IREDs that were pending the results of the OP cumulative assessment (listed inAttachment A) are indeed eligible for reregistration; and
1

Malathion is included in the OP cumulative assessment. However, the Agency has issued a RED for malathion, rather than an IRED, because the decision was signed on the same day as the completion of the OP cumulative assessment.

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(2) the pesticide tolerances covered by the IREDs and TREDs that were pending the results of theOP cumulative assessment (listed in Attachment A) meet the safety standard under Section 408(b)(2) of the FFDCA. Thus, with regard to the OPs, EPA has fulfilled its obligations as to FFDCA tolerance reassessment and FIFRA reregistration, other than product-specific reregistration. The Special Review and Reregistration Division will be issuing data call-in notices for confirmatory data on two OPs,methidathion and phorate, for the reasons described in detail in the OP cumulative assessment. The specific studies that will be required are: − 28-day repeated-dose toxicity study with methidathion oxon; and − Drinking water monitoring study for phorate, phorate sulfoxide, and phorate sulfone in both source water (at the intake) and treated water for five community water systems in Palm BeachCounty, Florida and two near Lake Okechobee, Florida. The cumulative risk assessment and supporting documents are available on the Agency’s website at www.epa.gov/pesticides/cumulative and in the docket (EPA-HQ-OPP-2006-0618).

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Attachment A: Organophosphates included in the OP Cumulative Assessment Chemical
Acephate Azinphos-methyl (AZM) Bensulide Cadusafos Chlorethoxyphos...
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