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Humboldt Bay Harbor District hearings examine tsunami modeling, wet storage and heavy-lift wharf design for proposed terminal
Summary
Consultants for the Heavy Lift Marine Terminal presented a site-specific tsunami model, wet-storage (in-water) options for assembled floating turbines and heavy-lift wharf design criteria; commissioners pressed on subsidence, mooring security and shore power while the board received the technical updates.
Consultants for the proposed Heavy Lift Marine Terminal gave the Humboldt Bay Harbor District board a technical update on coastal hazards, in-water storage needs and wharf design at the meeting.
Eunice Murray, a coastal engineer with Moffatt & Nichol, presented a site-specific tsunami model built to inform site design and compliance with building-code–level hazard requirements. "This model ... is showing the approach of the wave as it approaches the open coast and then the project site," Murray said, describing a Cascadia, magnitude-9 scenario with a return period of roughly 2,500 years. She said the model shows an initial drawdown followed by multiple inundating waves that can travel through the jetties into the channel; Murray told the board her runs used…
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