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Urban River Restoration: PCBs in the Neponset River

Urban River Restoration: PCBs in the Neponset River. Objectives. Measure water depths and sediment thickness in the Neponset River Assess sediment quality in the Neponset River Determine specific sources of polychlorinated biphenyls to sediment, water, and fish

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Urban River Restoration: PCBs in the Neponset River

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  1. Urban River Restoration: PCBs in the Neponset River

  2. Objectives • Measure water depths and sediment thickness in the Neponset River • Assess sediment quality in the Neponset River • Determine specific sources of polychlorinated biphenyls to sediment, water, and fish • Measure PCB concentrations in fish tissue samples

  3. Boston Harbor Basin

  4. T&H Impoundment

  5. T&H Impoundment

  6. Braided Channel

  7. Braided Channel

  8. Walter Baker Impoundment

  9. Walter Baker Impoundment

  10. PCBs in Sediment

  11. Sediment Toxicity

  12. PISCES

  13. PISCES

  14. PCBs in Water and Sediment

  15. PCB Source Identification

  16. PCBs in Water

  17. PCBs in Fish

  18. Fresh Water Fish Sampling White Sucker Fillet PCB Concentrations: Walter Baker Impoundment = 2.4 ppm T&H Impoundment = 3.5 ppm

  19. PCB Congeners in Fish, Water, and Sediment

  20. Objectives • Define the monthly, seasonal, and annual load of polychlorinated biphenyls (PCBs) from the Neponset River to Neponset River Estuary. • Determine the fate of PCBs in the Neponset River Estuary’s water, sediment, and fish. • Identify historical source of PCBs to the Neponset River and determine if that source is still continuing.

  21. PCB load to Neponset Estuary

  22. Sample Collection

  23. Sample Preparation

  24. PISCES

  25. Planktivorous Fish Sampling

  26. Questions?

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