Services Rendered:
Dioxin Fate & Transport
EFDC Modeling
Sediment Deposition/Resuspension
Hydrologic Modeling
Interim Remedial Design
DSI under contract to BEM Systems, performed several subtasks as the lead technical expert for dioxin fate and transport. The following tasks were completed:
- Hydrologic and hydraulic assessment of the drainage system of the Da Nang Airport. The objective was to understand surface water flow paths and its impacts on historic dioxin transport.
- Assessment of several ponds that received historic dioxin contaminated sediments. Conducted bathymetric surveys, sediment thickness mapping, evaluation of dioxin settling patterns, and volume/elevation determinations.
- Developed several 2D hydrodynamic models of the ponds to evaluate internal flow patterns during storm events and contaminated sediment resuspension potential.
- Provided hydraulic and hydrologic evaluation and support to the interim remedial action alternatives being evaluated.
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- Site visit with BEM & MOD
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- Dioxin Storage Area
