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2016 Updated ambient concentrations of toxic chemicals in San Francisco Bay area sediments

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Yee, D.; Trowbridge, P. 2016. 2016 Updated ambient concentrations of toxic chemicals in San Francisco Bay area sediments. San Francisco Estuary Institute: Richmond, CA.
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PDF icon 2016 Dredging Contaminant Thresholds Memo 20160226.pdf3.1 MB
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Dredged Material Testing Thresholds for San Francisco Bay Area Sediments (Project)

This page presents sediment chemistry thresholds for seven different contaminant classes, used by the Dredged Material Management Office (DMMO) for determining when bioaccumulation testing will typically be required for dredged material proposed to be discharged at unconfined open water disposal sites in San Francisco Bay. These same thresholds are also used by DMMO to determine when additional analysis of the post-dredge sediment surface (“residual” or “z-layer” sediments) may be warranted.

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