What type of environmental document must accompany an NPRM, TFR, or NOE?

An Environmental Assessment (EA) is required to accompany a Notice of Proposed Rulemaking (NPRM), Temporary Flight Restriction (TFR), or Notice of Exemption (NOE) to determine whether significant environmental impacts could result from the proposed actions. The main purpose of an EA is to provide enough evidence to ascertain if an Environmental Impact Statement (EIS) is needed, or if the action can be justified with a Finding of No Significant Impact (FONSI).

An EA typically summarizes the proposed action and its potential environmental effects, ensuring that decision-makers and the public know what to expect. It is a crucial step in achieving compliance with the National Environmental Policy Act (NEPA), which mandates federal agencies to assess the environmental impact of their proposed actions before making decisions.

While the other options like Environmental Impact Statements, Categorical Exclusions, and Environmental Risk Assessments serve important roles in environmental management, they do not specifically fulfill the requirement tied to an NPRM, TFR, or NOE in the same way that an Environmental Assessment does.