APPENDIX A: GLOSSARY (cont.) - tech-frame-rev040085

Framework for Dredged Material Management

May 2004

isolating the dredged material from adjacent waters during placement. Confined

disposal does not refer to subaqueous capping or contained aquatic disposal.

Confined disposal facility (CDF)

An engineered structure for containment of dredged material consisting of dikes

or other structures that enclose a disposal area above any adjacent water surface,

isolating the dredged material from adjacent waters during placement. Other

terms used for CDFs that appear in the literature include "confined disposal area,"

"confined disposal site," and "dredged material containment area."

Contained aquatic disposal

A form of capping which includes the added provision of some form of lateral

containment (for example, placement of the contaminated and capping materials

in bottom depressions or behind subaqueous berms) to minimize spread of the

materials on the bottom.

Contaminant

A chemical or biological substance in a form that can be incorporated into, onto,

or be ingested by and that harms aquatic organisms, consumers of aquatic

organisms, or users of the aquatic environment.

Contaminated sediment or contaminated dredged material

Contaminated sediments or contaminated dredged materials are defined as those

that have been demonstrated to cause an unacceptable adverse effect on human

health or the environment.

Control measure

See Management action.

Disposal site or area

A precise geographical area within which disposal of dredged material occurs.

Dredged material

Material excavated from waters of the United States or ocean waters. The term

dredged material refers to material which has been dredged from a water body,

while the term sediment refers to material in a water body prior to the dredging

process.

Dredged material discharge

The term dredged material discharge as used in this document means any addition

of dredged material into waters of the United States or ocean waters. The term

includes open- water discharges; discharges resulting from unconfined disposal

operations (such as beach nourishment or other beneficial uses); discharges from

confined disposal facilities that enter waters of the United States (such as effluent,

surface runoff, or leachate); and overflow from dredge hoppers, scows, or other

transport vessels.