Environmental assessment of physical/chemical impacts related to the dredging and disposal of spoil from the proposed trench tube crossing of the Anacostia River

Details Environmental assessment of physical/chemical impacts related to the dredging and disposal of spoil from the proposed trench tube crossing of the Anacostia River Environmental assessment of physical/chemical impacts related to the dredging and disposal of spoil from the proposed trench tube crossing of the Anacostia River

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981stin...8132335p&link_type=abstract

Final Report, May 1980 - Feb. 1981 Ecological Analysts, Inc., Sparks, MD.

Mathematics

Logic

Contaminants, District Of Columbia, Dredged Materials, Environment Protection, Rivers, Tunneling (Excavation), Water Pollution, Construction, Ddt, Iron, Mercury (Metal), Sediments, Surface Water

Scientific paper

Environmental sampling and testing was conducted to identify specified chemical pollutants in river-bottom material to be dredged during construction of the Metro subway tube tunnel crossing of the Anacostia River. Constituent concentrations is sediments, elutriates, and surface waters at the site and defined and compared with federal, state, and District of Columbia criteria and guidelines to identify potential problem areas and to evaluate potential chemical and physical impacts of dredging and spoil disposal. The results indicate sediment-bound concentrations of chlordane, DDT and PCBs which fail to meet federal criteria. High surface water concentrations of iron and mercury were identified which would prevent regulatory compliances of dredging operations for these constituents. It was concluded that the dredging would be minimal. Potential impacts upon groundwater were identified, bur further analyses of hydrogeology at the proposed disposal sites would be needed to define the potential for problems.

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