Hydroacoustic Pile Driving Noise Study – Comprehensive Report
December 2016 — Alaska, United States
Client: Alaska Department of Transportation
Acoustic monitoring and analysis to characterize underwater noise from pile driving activities to inform the assessment of the potential impacts on marine mammals. JASCO measured underwater sounds at the Kake, Auke Bay, Kodiak, and Ketchikan ferry terminals during ferry terminal improvement construction projects and characterized sound levels associated with pile extraction, vibratory pile driving, impact hammer pile driving, and rock socket drilling. Distances from the piles to sound threshold criteria for injury and behavioral disturbance were calculated, accounting for the hearing sensitivity of marine mammal groups where appropriate.
