Accession Number:

ADA303532

Title:

Risk of Pore Water Ammonia Toxicity in Dredged Material Bioassays. Dredging Operations Technical Support Program.

Descriptive Note:

Final rept.,

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

Personal Author(s):

Report Date:

1995-11-01

Pagination or Media Count:

67.0

Abstract:

Ammonia is a highly toxic, naturally occurring constituent of sediment pore water. It is not treated as a contaminant of concern for the regulatory evaluation of dredged material since it undergoes rapid oxidation and dilution during dredging and disposal. Because dredged material is evaluated using effects-based tests i.e., whole sediment and elutriate toxicity tests, there is the potential for ammonia to exert toxicity and confound the regulatory decision-making process. This report evaluates the potential for ammonia toxicity in dredged material bioassays.

Subject Categories:

  • Toxicology
  • Inorganic Chemistry
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE