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Oswego River Sediment Study

SUBJECT: GLNPO Project completion: Oswego River Sediment Study

USEPA's Great Lakes National Program Office (GLNPO) announces the
completion of its portion of this grant to the New York Department
of Environmental Conservation (NYSDEC) (GLNPO funding $115,721).


The Oswego River and Harbor have been designated as an Area of
Concern (AOC) due to past industrial and municipal discharges which
have contaminated the water column and bottom sediments.  Data
generated from the sediment study will be used to characterize the
nature and extent of all potential contaminants in the Oswego AOC. 
Sediment toxicity and biological impairment, if any, will also be
characterized.  Sediment cores will be collected for chemical
analysis and surficial samples will be collected for toxicity testing.

The sampling plan includes coverage of the Oswego River upstream of
the AOC, a region for which very little information currently exists
documenting benthos conditions.  Information from these upstream
sites will be necessary to adequately evaluate remediation measures,
if necessary, in the AOC as natural transport mechanisms move
contaminated sediments from upstream sites into the AOC.

keywords: Oswego River Area of Concern, contaminated sediments


The highest levels of contamination were detected in two cores
collected at Battle Island.  Extremely high levels of total PAHs
were detected, as well as high concentrations of trace metals,
dioxin, and mirex.  Battle Island is just downstream from Armstrong
World Inc., which had already been suspected to be the source of
high mirex concentrations.

Results will allow for the assessment of depositional rates and
evaluation of sediment toxicity on the benthic community, as well
as the prioritization of necessary remediation measures in the AOC.


For additional information, please contact GLNPO Project Officer
Diane Dennis-Flagler (312-886-4012;
dennis.flagler.diane@epamail.epa.gov), referencing Fiscal Year 1994
grant number GL995660-01-0.

Information on additional GLNPO projects is available via links
to GLNPO's Internet home page: