[US EPA SEAL AND LETTERHEAD] OFFICE OF CHEMICAL SAFETY AND POLLUTION PREVENTION AUG 09 2019 Via Email and U.S. Mail Mr. Jon Doggett Chief Executive Officer National Corn Growers Association 20 F Street Northwest, #600 Washington, D.C. 20001 Dear Mr. Doggett and State Affiliates: I want to thank your national organization and several of your members for bringing to my attention some of your concerns regarding the Agency's data assumptions and interpretations related to EPA's latest draft ecological risk assessment of atrazine. After considering your input, other public comments from various stakeholders and the clear recommendations of the 2012 Science Advisory Panel (SAP), EPA is already evaluating alternate approaches for inclusion and exclusion of studies, evaluating/scoring, and interpretation of ecosystem and related studies. As such, EPA plans to within two to three weeks release a new publication that memorializes our improved approach. In addition, at that time, we will be providing an update regarding the schedule for an expedited completion of registration review for atrazine. Again, thank you your thoughtful participation in the reregistration process. Sincerely, [signature] Alexandra Dapolito Dunn, Esq. Assistant Administrator