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Glossary of Terms

DN (Decision Notice)

This type of decision is used when an Environmental Assessment (EA) is conducted and it is concluded that no significant environmental impact will result from implementing the preferred alternative. (If a significant environmental impact will result, an EIS must be prepared.) Decisions documented in a Decision Notice are subject to administrative appeal unless there has been no expression of public interest in the action.


Documentation of Land Use Plan Conformance and National Environmental Policy Act (NEPA) Adequacy


A worksheet for determining and documenting that a new site-specific proposed action both conforms to the existing land use plan(s) and is adequately analyzed in existing NEPA documents. The signed conclusion in the worksheet is an interim step in BLM's internal analysis process and is not an appealable decision. A Documentation of NEPA Adequacy (DNA) identifies previously prepared NEPA documents which adequately describe the environmental consequences of a newly proposed action. In most cases a DNA is prepared without additional public involvement.


Department of the Interior

Domestic water sources

Watersheds containing National Forest System lands that provide surface waters to facilities that treat and distribute water for domestic purposes. These purposes include normal household uses such as drinking, food preparation, bathing, washing clothes and dishes, watering lawns and gardens, and similar uses.


Decision Record (for an EA)

Dynamic equilibrium

A natural state of stream stability when channel features persist over time within a range of conditions. Dynamic equilibrium uses a series of self-correcting mechanisms that allow the ecosystem to control external stresses or disturbances, thereby maintaining a self-sustaining condition. For example, a stream is able to consistently transport its sediment load, both in size and type, associated with local deposition and scour.


Environmental Assessment

Ecological Approach

An approach to natural resource management that considers the relationships amongall organisms, including humans, and their environment.