Two industry groups recently filed challenges, under the Data Quality Act, against the U.S. Environmental Protection Agency's (EPA) methodological choices. Both challenges focus on evaluations of human health risks from specific chemicals. The petitions specifically question documents that address emissions of Metam Sodium, a pesticide, and Dioxin/Furan, used to produce cement. The petitions challenge EPA procedures, however, which are policy decisions made within the agency -- and not data -- and as such lie outside the scope of the Data Quality Act (DQA).