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FIFRA SCIENTIFIC ADVISORY PANEL (SAP) OPEN MEETING March 13 - 16, 2001

March 8, 2001

 

FIFRA SAP WEB SITE: http://www.epa.gov/scipoly/sap/
OPP Docket Telephone: (703) 305-5805

TUESDAY, MARCH 13, 2001
HILTON HOTEL CRYSTAL CITY
2399 JEFFERSON DAVIS HIGHWAY
ARLINGTON, VIRGINIA 22202
703-418-6800

Probabilistic Models and Methodologies: Advancing the Ecological Risk Assessment Process in the EPA, Office of Pesticide Programs

Question 1 1. Focal Species Selection Goals: The goals for selection of bird species serving as the focus of the risk assessment were to

(1) advance the assessment beyond consideration of "generic" bird types so as to consider appropriate biological conditions associated with the treated environments, and (2) identify the types of species potentially at greatest risk from ChemX exposure at the corn and alfalfa use sites identified above.

Under the current EFED status of probabilistic risk assessment development, the use of focal species in an assessment is limited. The likely lack of species-specific toxicity data engenders considerable uncertainty regarding the prediction of the magnitude of mortality in any single bird species. Rather, the use of focal species is targeted to represent a myriad of potential species of similar biological/behavioral characteristics, yet retain some specificity as to the type of organisms using a treated area.

THURSDAY, MARCH 15, 2001
HILTON HOTEL CRYSTAL CITY
2399 JEFFERSON DAVIS HIGHWAY
ARLINGTON, VIRGINIA 22202
703-418-6800

A Probabilistic Model and Process to Assess Risks to Aquatic Organisms


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