Evaluation of older bay mud sediment from Richmond Harbor, California

Technical Report · Sun Sep 01 00:00:00 EDT 1996

DOI:https://doi.org/10.2172/452844· OSTI ID:452844

Pinza, M R; Mayhew, H L; Word, J Q

The older, bay mud (OBM) unit predates modem man and could act as a barrier to the downward transport of contaminants from the younger bay mud (YBM) because of its hard-packed consistency. However, its chemical and biological nature have not been well characterized. Battelle/Marine Sciences Laboratory (MSL) conducted three independent studies of OBM sediment in January 1993, January 1994, and October 1994. These studies evaluated potential chemical contamination and biological effects of OBM that could occur as a result of dredging and disposal activities. These evaluations were performed by conducting chemical analysis, solid-phase toxicity tests, suspended- particulate-phase (SPP) toxicity tests, and bioaccumulation tests on the OBM sediment. If the sediment chemistry and toxicity results showed no or minimal contamination and toxicological responses, then either the OBM could be left exposed in Richmond Harbor after dredging the YBM without leaving a source of contamination, or if the project depths necessitate, the OBM would be acceptable for disposal at an appropriate disposal site.

• Research Organization: Battelle/Marine Sciences Lab., Sequim, WA (United States)
• Sponsoring Organization: Department of the Army, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 452844
• Report Number(s): PNNL-11318; ON: DE97050273
• Resource Relation: Other Information: DN: Project ID 21794; PBD: Sep 1996
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
56 BIOLOGY AND MEDICINE
APPLIED STUDIES
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
DREDGING
BIOLOGICAL EFFECTS
SEDIMENTS
MARINE DISPOSAL
ENVIRONMENTAL IMPACTS
CALIFORNIA
TOXICITY
CHEMICAL ANALYSIS
CONTAMINATION
SURFACE WATERS
BIOLOGICAL ACCUMULATION
EXPERIMENTAL DATA