Coastal and Marine Geology Program > The Legacy of Contaminated Sediments in Boston Harbor

The Legacy of Contaminated Sediments in Boston Harbor

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Map and histogram showing concentration levels and locations of lead (Pb) samples in Boston Harbor that are currently in the database. High metal values are those greater than the ER-M (110 micrograms/gram), the concentration at which 50 percent of test sediments are found to have consistent adverse effects on biota. Low metal values are those less than ER-L (35 micrograms/gram) the concentration at which 10 percent of test sediments are found to have consistent adverse effects on biota.

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Coastal and Marine Geology Program > The Legacy of Contaminated Sediments in Boston Harbor

U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/fs/boston-harbor/figures/fig3.html
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Last modified: 15:15:41 Tue 25 Nov 2003
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