Anchorage Port Modernization Project Test Pile Program: Hydroacoustic Monitoring Report
August 2016 — Alaska, United States
Client: Kiewit Infrastructure West Co.
A sound measurement study that quantified the underwater sound pressure levels during ambient conditions and during vibratory and impact pile driving. The data were analyzed to characterize the sound transmission loss and verify distances to marine mammal disturbance thresholds. The effectiveness of two noise attenuation systems was assessed in terms of how much they reduced the pile driving sound levels near the source and the distances to the marine mammal disturbance thresholds.
