U n ited States                 Office of Water              EPA 822-F10-002
                  Environments I Protection          4301T                  November2010

CWA-FIFRA Common Effects Characterization Methodology
      Summary Abstract: Both Office of Water (OW) and the Office of Pesticide Programs (OPP)
      have responsibilities for evaluating aquatic ecotoxicity data to assess ecological effects of
      chemicals in surface water. EPA's goal is to build on the substantial high quality science
      developed and used hy both programs and make these effects assessment methodologies
      consistent. Efforts are underway to develop and test approaches to support a common effects
      assessment methodology.

      Both the Office of Pesticide Programs (OPP) and the Office of Water (OW) assess the effects of
      pesticides on aquatic ecosystems using approaches that afford a high degree of protection for
      aquatic life and that were developed with high quality data using rigorously peer-reviewed
      assessment methodologies. In characterizing pesticide effects, both programs consider acute
      effects as well as chronic and sub-lethal effects on growth, survival, and reproduction in their
      assessments.  Stakeholders have identified  a need for consistent and timely Federal input that
      will allow EPA, states, tribes and the public to gauge whether pesticides represent a concern for
      aquatic life, for example, based on water monitoring results. EPA is now exploring how to build
      on the substantial high quality science developed under both programs to develop additional
      tools and approaches to support a consistent and common set of effects characterization methods
      using best available information.

      EPA held six regional public meetings in January 2010 to solicit stakeholder input on its initial
      thinking regarding a common effects assessment process and tbe scope and content of three
      white papers that will explore the following topics: (1) the use of various tools to estimate
      aquatic toxicity data; (2) approaches for deriving community-level  benchmarks;  and (3)
      procedures for better integrating plant effects data into community-level assessments. The
      meetings were held in the following regions: (3,4,5,7,9, and 10)
      Region 2,3   Edison, NJ                        Region 7     Kansas City, KS
      Region 4     Atlanta, GA                       Region 9     Oakland, CA
      RegionS     Chicago, IL                       Region 10     Seattle, WA

      Current Status & Next Steps:
      EPA is holding a national public stakeholder meeting in Washington, D.C on December I, 2010
      to solicit input on methods being evaluated by the OPP, the OW, and the Office of Research and
      Development to characterize aquatic ecosystems effects using available data.  EPA expects  to
      solicit stakeholder input on the tools and approaches presented in the three draft  white papers
      through a Federal Register notice and at the national stakeholder meeting. The EPA then plans to
      hold a formal peer review of these methodologies (SAB/SAP) in the summer of 2011.

      More information on this project, including access to a docket to provide comments is available
      at: http://www.epa.gov/oppefed l/cwa_fifra_effects_methodology/index.htrnl or at
      http://wwAv.regulations.gov, identified hy Docket ID No. EPA-HQ-OPP-2009-0773.

      To get more information

    Joe Beaman (Office of Water): Bcaman.Joe@epa.gov;
    Mark Corbin (Office of Pesticide Programs): Corbin.Mark@epa.gov
    Cindy Roberts (Office of Research and Development): Roberts.Cindy@epa.gov