Lynn L. Bergeson, “EPA Issues Final Weight-of-Evidence Guidance,” Chemical Processing, October 2011.

On September 28, 2011, the U.S. Environmental Protection Agency (EPA) published its final guidance on the weight-of-evidence (WoE) analysis it will use to evaluate the results of data submitted in response to test orders issued for Tier 1 screening under the Endocrine Disruptor Screening Program (EDSP). What follows is a brief overview of the Final WoE Guidance, which is available at http://www.regulations.gov.