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Glossary of Terms


Conservation Strategy

Cultural Resource

The remains of sites, structures, or objects used by people in the past; this can be historical or pre-historic.

Cumulative Effects

Effects on the environment that result from separate, individual actions that, collectively, become significant over time.

CX (or CE)

Categorical Exclusion

DBH (Diameter at Breast Height)

The diameter of a tree 4 and 1/2 feet above the ground on the uphill side of the tree.

Decision criteria

The rules and standards used to evaluate alternatives to a proposed action on National Forest land. Decision criteria are designed to help a decisionmaker identify a preferred choice from the array of alternatives.

Decking area

A site where logs are collected after they are cut and before they are taken to the landing area where they are loaded for transport.


Demolition, dismantling, removal, obliteration, or disposal of a deteriorated or otherwise unneeded asset or component, including necessary cleanup work. This action eliminates the deferred maintenance needs for the fixed asset. Portions of an asset or component may remain if they do not cause problems or require maintenance.

DEIS (Draft Environmental Impact Statement)

The draft version of the Environmental Impact Statement that is released to the public and other agencies for review and comment

Designated Right-of-Way Corridor

A parcel of land, usually linear in shape, that is identified through Secretarial Order in a land use plan or by other management decision as a preferred location for existing and future rights-of-way grants.