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View Fact Sheet

Suspended sediment-bound toxic chemical fluxes from the Snohomish and/or Stillaguamish River to Puget Sound.

Back to all Near Term Actions
Proposal
Planning/Design
Implementation
Post-Implementation
Completed

Contents

Near Term Action Overview

Basics

Chinook Salmon
CHIN4: Emphasize funding and implementation of science and monitoring actions to support salmon recovery
CHIN4.2: Improve monitoring and assess impacts of point and nonpoint source pollutants on salmon
Suspended sediment-bound toxic chemical fluxes from the Snohomish and/or Stillaguamish River to Puget Sound.

Planning/Design
Toxic chemicals, such as PAHs, sorb to sediment rather than dissolve in water. Therefore, traditional water-quality (WQ) monitoring analysis of water samples likely underestimates total chemical concentrations to which Chinook salmon and other aquatic species are exposed. The USGS developed a new field centrifugation method to quantify suspended sediment-bound chemical concentrations and fluxes. We will follow the model of work established at the Duwamish River, including continuous river flow and turbidity, discrete measurements of WQ, suspended sediment concentration and particle-size distribution, and centrifugation for suspende...

2019
2020
2022
9/19/2019

Near Term Action Attributes

Additional Basic Information

2018 NTA ID
2018-0976

Implementation Status

Activity Progress
Off-Track
Activity Progress Barrier
Inadequate resources: Funding not fully secured

Miscellaneous

Total Proposed NTA Cost
$600,000.00

Location

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Site specific

  • Snohomish

  • Stillaguamish
  • Snohomish

  • Legislative District 10

  • Snohomish / Stillaguamish