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Tier II Groundwater Model for Carbamate Cumulative

April 2011 - Vol. 30

Federal vs. State: Federal

Description: EPA is developing a Tier II Groundwater Model that will generate refined estimations of concentrations of pesticides in groundwater for the carbamate cumulative risk assessment. The Agency is working with USGS to evaluate existing vadose-zone models that can be adapted for use in this risk assessment. The three models that have been evaluated include PRZM, RZWQM, and LEACHMP. The preliminary evaluation of these models was completed and included in the Agency's cumulative carbamate assessment. In August 2005, the Scientific Advisory Panel reviewed the Agency's preliminary carbamate cumulative risk assessment and provided comments. The final evaluation for the Tier II ground water model used in the carbamate cumulative is expected to be completed in the Fall of 2006. The final evaluation for the Tier II ground water model used in the carbamate cumulative was completed September 2007 and is included in the Revised N-Methyl Carbamate Cumulative Risk Assessment (http://www.epa.gov/oppsrrd1/REDs/nmc_revised_cra.pdf).

Contact Information:
- AAship: Office of Prevention, Pesticides, and Toxic Substances/Office of Pesticide Programs
- EPA Office/Organization: Office of Prevention, Pesticides and Toxic Substances/Office of Pesticide Programs
Michael Barrett, 703-305-6391, 703-308-6181 (FAX),
barrett.michael@epa.gov

Expected Release: N/A

Comment Period: February 15, 2005 - February 18, 2005
Comment Period Title: FIFRA Scientific Advisory Panel (SAP)
Stakeholder/Public Involvement Method(s): Public meeting(s), Federal Register notice, E-mail/Listserv, Web site/Web page
How to Access Draft Product: www.epa.gov/scipoly/sap

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