National Park Service

The Criteria are written broadly to recognize the wide variety of historic properties associated with our prehistory and history.

The Federal Land Managers’ Air Quality Related Values Work Group (FLAG) formed to develop a more consistent approach for the Federal Land Managers (FLMs) to evaluate air pollution effects on resources.

Increased nitrogen (N) or sulfur (S) deposition may result from emissions from new or modified facilities subject to New Source Review (NSR), activities subject to requirements under the National Environmental Policy Act (NEPA), and other actions.

The National Park Service defines a cultural landscape as a geographic area, including both cultural and natural resources and the wildlife or domestic animals therein, associated with a historic event, activity, or person, or exhibiting other cultural or aesthetic values.