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Pesticide News Story: Atrazine Ecological Monitoring Program

For Release: January 30, 2007

EPA’s October 2003 Interim Reregistration Eligibility Decision (IRED) required registrants to conduct ecological monitoring of atrazine to determine that there is not an unreasonable risk to freshwater aquatic ecosystems.  This program, designed to focus on flowing water bodies, provides two years of monitoring data, accrued over a three-year period (2004-2006), in the most vulnerable watersheds associated with corn and sorghum production. 

EPA is also in the process of assessing the potential effects of atrazine use to eight threatened and endangered species, as a result of the March 2006 settlement with the Natural Resources Defense Council (NRDC).  The settlement states that 30 days before completing the effects determination, EPA must provide NRDC and the public access to the atrazine ecological water monitoring data.  Therefore on January 29, 2007, EPA will make publicly available the ecological watershed monitoring results for the herbicide atrazine in 40 potentially vulnerable watersheds. 

The atrazine ecological water monitoring data that are relevant to the determination that EPA is currently completing, may be obtained through a Freedom of Information Act request after completion and submission of an Affirmation of Non-multinational Status Form, pursuant to FIFRA Section 10(g).  The affirmation form and more information are available on EPA's Freedom of Information Web site. The form includes directions for returning the required information to EPA. When requesting these data, you should request the “Atrazine Ecological Watershed Monitoring Data”.   EPA will provide these data in pdf format or in hard copy if you do not have pdf capability.

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