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Glossary of Terms

Desired Conditions

Narrative descriptions of the ecological, social, and economic attributes of the plan area toward which management is directed.

Desired future condition

Land or resource conditions that are expected to result if goals and objectives are fully achieved.

Developed recreation

Activities that are consistent with the settings and experiences identified with the Roaded Natural (RN), Rural (R), and Urban (U) classes of the Recreation Opportunity Spectrum. These activities are usually associated with an area that has been improved or developed for recreation, such as campgrounds and picnic areas, scenic overlooks and interpretive sites, or visitor centers and resorts.

Directional Drilling

The intentional deviation of a well bore from a vertical position to reach subsurface areas off to one side from the drilling site.

Director (BLM Director)

The national Director of the BLM.

Dispersed recreation

Activities usually associated with backcountry and trails and are consistent with the settings and experiences identified with Primitive (P), Semi- Primitive Non-Motorized (SPNM), and Semi-Primitive Motorized (SPM) classes of the Recreation Opportunity Spectrum. Examples of these activities include hiking, snowmobiling, mountain biking, wilderness use, backpacking, horseback riding, and OHV use.


Any event, such as forest fire or insect infestations that alter the structure, composition, or functions of an ecosystem.


Departmental Manual

DM (Decision Memo)

This type of decision is used when the environmental analysis has been "categorically excluded" (CE) from documentation in an EA or an EIS. Ordinarily, decisions documented in a Decision Memo are not subject to administrative appeal; the exception is the category of small timber sales (unless there has been no expression of public interest in the sale).