Which office is responsible for performing conformity reviews on NPRMs, TFRs, and NOEs?

The Eighth District Legal Office is the correct answer because it is tasked with the responsibility of conducting conformity reviews on Notices of Proposed Rulemaking (NPRMs), Temporary Flight Restrictions (TFRs), and Notices of Exemptions (NOEs) within its jurisdiction. These reviews ensure that the proposed regulations and actions comply with legal and regulatory requirements, especially those implicating environmental standards.

The Coast Guard Headquarters, while influential in setting policies and coordinating operations, does not perform these specific reviews. The Environmental Protection Agency, on the other hand, oversees environmental protection compliance but does not focus on the specific documents mentioned in the question. Lastly, the Department of Transportation has broader responsibilities across multiple modes of transport but does not exclusively handle conformity reviews related to TFRs or NOEs as assigned to the Eighth District Legal Office. This specialized function ensures that the local and specific legal context is adhered to effectively in accordance with the rules applicable to waterways management.