Assessment of Underwater Noise Generated by Wave Energy Devices

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December 2009 — Oregon, United States

Client: Oregon Wave Energy Trust

A review study to: (1) provide a concise knowledge base of expected underwater noise conditions near the Oregon coast where wave energy projects could be developed, and (2) describe noise measurement methodologies suitable for effective regulatory assessment of potential acoustic impacts. Intended as a reference for wave energy developers to use when selecting approaches to underwater noise measurement that would be acceptable to regulatory bodies, consistent with the state of the industry, and cost effective to implement.

NaiKun Offshore Wind Energy Project Application for Environmental Assessment Certificate

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March 2009 — British Columbia, Canada

Clients: Hemmera, NaiKun

Vol 4, Sec 4 & 5 – Airborne Noise Modelling

Vol 4, Sec 8 & 9 – Underwater Noise Modelling

Both airborne and underwater noise modelling of sounds associated with the construction, operation, and decommissioning of the proposed Naikun offshore wind energy project in Hecate Strait. Airborne noise levels and underwater noise footprints were predicted for sources with the greatest potential for disturbance, including impact pile driving of the turbine foundations, construction activities at cable land fall areas, and operating wind turbines. A background literature review was performed to investigate wind farm related noise sources, mitigation options, and documented assessments from other wind farm projects.