View source for Pile driving noise and mitigation

Impact pile driving is common during construction projects within the critical habitat of the southern resident killer whales.  Here we attempt to gather calibrated measurements of pile driving source levels and mitigation effectiveness.

*[[media:Cape_Disappointment_Pile_Driving_Report_Final_3-06revised_.pdf Cape Disappointment experiments]] Jim Laughlin of WADOT assesses mitigation potential of bubble curtains and different cap materials.

Recordings made via [http://orcasound.net Salish Sea Hydrophone Network]:

*[http://orcasound.net/mp3s/nb/080916-pile-driving.mp3 Neah Bay sheet pile driving]
*[http://orcasound.net/mp3s/nb/080923_1635-1636_000055_nb_pile-driving-echo.mp3 Neah Bay sheet pile driving with echo]
*[http://orcasound.net/mp3s/nb/080928_1103-1105_000217_nb_buoy-then-pile-drive-start.mp3 Neah Bay sheet pile driving start up]
*[http://orcasound.net/nb Archived sounds from Neah Bay] including other industrial noise likely associated with the 2008 pile driving at the Coast Guard dock