Underwater Measurements of Pile-Driving Sounds During the Port MacKenzie Dock Modifications August 2004

The goals of this study were to use underwater acoustic recordings of construction noise associated with the Port MacKenzie dock modification, specifically vibratory and impact pile driving of pipes, to determine the level of sounds expected during construction of the crossing. Specifically, we aimed to:

1. report peak values, sound pressure levels, and sound exposure levels for impact pile driving pulses as received at a range of distances from the pipes;
2. report sound pressure levels for vibratory pile driving sounds as received at a range of distances from the pipes; and 3) to characterize the acoustic properties of these sounds in terms of spectral composition and propagation loss between the different recording stations.