PNNL Bio-Acoustics & Flow Laboratory (BFL) is a multi-disciplinary research and development laboratory, addressing a broad range of engineering and ecological issues, with an emphasis on environmental monitoring and risk assessment for conventional hydropower, wind, marine, and hydrokinetic renewable energy systems. We have extensive experience in flow characterization in complex environments. We also have extensive experience addressing acoustic technology problems across the range from basic material properties of acoustic system elements, instrumentation, and applications, to propagation modeling. BFL is accredited by The American Association for Laboratory Accreditation (A2LA) to ISO/IEC 17025:2005, which is the international standard for calibration and testing laboratories. The scope (Certificate Number 3267.01) includes hydrophone sensitivity measurements and power level measurements of sound sources for frequencies from 50 kHz to 500 kHz for both military equipment and commercial components. This certification permits us to not only perform primary certified testing on instruments made by others but also permit us to perform certified testing on instruments that we build ourselves.