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Comment Period Extended for Atrazine, Propazine and Simazine Draft Biological Evaluations

For Release: December 23, 2020

EPA is extending the public comment period on the draft biological evaluations for atrazine, propazine and simazine to give stakeholders more time to review and comment. The current comment period was set to close on Jan. 5, 2021, and EPA is extending the comment period an additional 45 days. Comments can be submitted to docket EPA-HQ-OPP-2020-0514 on

EPA will use feedback received from the public comment period to inform the final biological evaluations.

View the draft biological evaluations and supporting documents.


In November 2020 EPA released its draft biological evaluations for atrazine, propazine and simazine for public review and comment. Biological evaluations are the beginning of EPA’s Endangered Species Act consultation review process where the agency determines whether a pesticide may affect one or more individuals of a listed species and their designated critical habitats.