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BOEING PLANT 2 SEDIMENT REMEDIATION: REMEDIAL DREDGING METHODS TO MANAGE THE RISKS OF RESIDUALS, RESUSPENSION AND RELEASE; THE BENEFITS AND COSTS
Webb, R.S., B. Anderson, S. Tochko, P. Fuglevand, and T. Dreher.
Proceedings of the Western Dredging Association Dredging Summit & Expo '17, Vancouver, British Columbia, Canada, June 26-29, 2017. p 473-484 + 20 slides, 2017
The recently completed Boeing Plant 2 site restoration project on the Lower Duwamish Waterway Superfund site in Seattle, Washington, proved successful in implementing multiple advanced technologies for PCB-contaminated sediment remediation. Highly variable site conditions included tidal fluctuations, changes in water salinity, and widely ranging suspended solids concentrations. The remedial dredging methods used during the project demonstrated that residuals and releases from mechanical dredging can be significantly reduced or eliminated. In addition, state-agency required dredge-water quality limits resulted in the development and first-time use of electrocoagulation for dredge water processing on a large scale. To meet the strict chemical and physical criteria for the dredge return water, electrocoagulation was used as the primary form of treatment. The project was awarded the World Organization of Dredging Association's 2016 Environmental Excellence Award for Environmental Dredging.
Paper: https://www.westerndredging.org/phocadownload/2017_Vancouver/Proceedings/7a_4.pdf
Slides: https://www.westerndredging.org/index.php/information/category/281-session-7a-sediment-remediation?download=1507:7a-4-boeing-plant-2-sediment-remediation-remedial-dredging-methods-to-manage-the-risks-of-residuals-resuspension-and-release-the-benefits-and-costs
Proceedings of the Western Dredging Association Dredging Summit & Expo '17, Vancouver, British Columbia, Canada, June 26-29, 2017. p 473-484 + 20 slides, 2017
The recently completed Boeing Plant 2 site restoration project on the Lower Duwamish Waterway Superfund site in Seattle, Washington, proved successful in implementing multiple advanced technologies for PCB-contaminated sediment remediation. Highly variable site conditions included tidal fluctuations, changes in water salinity, and widely ranging suspended solids concentrations. The remedial dredging methods used during the project demonstrated that residuals and releases from mechanical dredging can be significantly reduced or eliminated. In addition, state-agency required dredge-water quality limits resulted in the development and first-time use of electrocoagulation for dredge water processing on a large scale. To meet the strict chemical and physical criteria for the dredge return water, electrocoagulation was used as the primary form of treatment. The project was awarded the World Organization of Dredging Association's 2016 Environmental Excellence Award for Environmental Dredging.
Paper: https://www.westerndredging.org/phocadownload/2017_Vancouver/Proceedings
Slides: https://www.westerndredging.org/index.php/information/category/281-sessi
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