To date, EPA has used an interim process to evaluate 24 new active ingredient registrations. None of these reviews have ultimately impacted an existing EPA ecological risk assessment. The results from the analysis of the first 24 active ingredients reflects that there is a low probability that claims asserting greater than additive (GTA) effects will impact ecological risk assessments for pesticide active ingredients. Therefore, the National and Regional Weed Science Societies support EPA’s plans to evaluate the results of the interim process, and once a sufficient number of reviews are completed, to decide whether continuing the process has utility in evaluating ecological risk associated with product use. If the outcome of EPA’s future evaluation demonstrates that the interim process does not have utility in evaluating ecological risk associated with product use, our societies agree that EPA and registrants should not exhaust additional time and resources in this endeavor and suspend evaluations.