JBD has trained and qualified sound engineers to provide hydroacoustic monitoring during pile driving activities. We use a Cetacean Research CR3-200-SP broadband and portable underwater noise recording, measurement, and analysis system to record, and provide real-time and post-processing analysis of audio-band and ultrasonic underwater signals and noise. Our methodology and equipment meet the standards from the Technical Guidance for Assessment of Hydroacoustic Effects of Pile Driving on Fish developed by the California Department of Transportation. Collected metrics include but are not limited to Peak sound pressure level (LPEAK) and Sound exposure level (SEL).
The effects of pile driving sound on marine mammals also requires analysis for projects constructed in or near water where they may be present. We also provide hydroacoustic monitoring pursuant to the National Marine Fisheries Service (NMFS) thresholds for marine mammals.
