This lesson addresses the National Environmental Policy Act (NEPA), the first major federal environmental law. It is designed to reinforce your understanding of the basic structure and requirements of NEPA. The exercise consists of twenty multiple choice or true/false questions, and it is designed as a summary of NEPA. The exercise assumes that the user has knowledge of the basic structure and requirements of NEPA. The questions will illustrate the broad impact of NEPA praised by Senator Chaffee, as well as the limitations of the law identified by the Council on Environmental Quality. The NEPA statute, regulations, and scores of NEPA documents from EPA, the White House and other federal agencies are available on the Web, and the lesson links directly to those sites.