1. Reregistration of Consumer Pesticides: US Environmental Protection Agency December 13, 2005 US Environmental Protection Agency December 13, 2005 Mosquito Misting Systems

2. Agenda 1.What is Reregistration? 2.How are misting systems assessed in Reregistration? 3.What do the risk assessments tell us? 4.What’s next for misting systems? 1.What is Reregistration? 2.How are misting systems assessed in Reregistration? 3.What do the risk assessments tell us? 4.What’s next for misting systems?

3. 3  Reregistration assesses risk for all pesticides registered before November 1984 Ensure risk assessments meet current scientific standards  Decisions published in Reregistration Eligibility Decision (RED) documents REDs include measures to mitigate risks of concern Reregistration under FIFRA

4. 4 Risk Assessments in REDs  Risk = Hazard (toxicity) x Exposure  Consider risks from various routes of exposure Food & Drinking Water Residential Occupational  Strive to mitigate risks of concern, while minimizing disruption to uses

5. 5 Residential Misting System Risk Assessments  Residential Mosquito Misting Systems (MMS) assessed for: Pyrethrins Piperonyl butoxide Permethrin

6. 6 Residential Misting System Risk Assessments  Routes of Possible Exposure: Inhalation, Dermal, Incidental Oral  Time frame of exposures: Acute (1 day), Short-term (1-30 days), & Intermediate-term (1-6 months)  Populations Potentially Exposed Occupational and Residential Handlers Residential Outdoor Bystander Exposures (Adult and Toddler)

7. 7 Variables in Mosquito Misting System Risk Assessments  Holding tank size  Spray release height  Number of spray events  Duration of spray events  Application rates  Nozzle coverage area

8. 8 Mosquito Misting Systems Risk Summary  Assessments based on best available information Some uncertainty in input variables  Current assessments show most scenarios are “not of concern”

9. 9 What’s Next for Misting Systems?  More specific label language  Data requirements  Registration review  Possible assessment refinements

10. 10 Public Participation  Public involvement vital to EPA’s pesticide decision making  Permethrin, Pyrethrins, and PBO REDs scheduled for early 2006  Docket schedule for reregistration comment periods on internet: www.epa.gov/oppsrrd1/reregistration/public_com ment_schedule.htm

11. 11 Information on EPA Website  EPA Office of Pesticide Programs www.epa.gov/pesticides/  Pesticide Reregistration www.epa.gov/pesticides/reregistration/  Schedule www.epa.gov/pesticides/reregistration/candidates.htm  REDs www.epa.gov/pesticides/reregistration/status.htm

12. SRRD Contact Information Public Health Issues: Susan Jennings jennings.susan@epa.gov Permethrin: Jackie Guerry guerry.jacqueline@epa.gov Pyrethrins & PBO: Cathryn O’Connell oconnell.cathryn@epa.gov Public Health Issues: Susan Jennings jennings.susan@epa.gov Permethrin: Jackie Guerry guerry.jacqueline@epa.gov Pyrethrins & PBO: Cathryn O’Connell oconnell.cathryn@epa.gov