March 2022 — Southeast Australia

Client: AECOM

Appendix A-1 – Baseline Monitoring of Ambient Underwater Noise Environment

Appendix A-2 – Underwater Noise Modelling

Appendix A-3 – Underwater Noise Impact Assessment

Three underwater noise studies that form part of the Environment Effects Statement for the Viva Energy Gas Terminal Project in southeastern Australia. The project will develop a gas terminal using a floating storage and regasification unit (FSRU) moored at Refinery Pier in Corio Bay, Geelong to facilitate supply of a new source of gas for the south-east Australian gas market where there is a projected supply shortfall in coming years.

December 2021 — Newfoundland, Canada

Client: Wood Environment and Infrastructure Solutions

An acoustic monitoring study to measure the acoustic signature of the Mobile Offshore Drilling Unit (MODU) Stena Forth, a dynamically-positioned ultradeep-water drillship, at the Pelles A-71 exploration well. The results are compared to modelled predictions. Baseline sound levels were measured as well as marine mammal presence and changes to the baseline resulting from the Pelles drilling program.

June 2021 — Southern Australia

Client: Beach Energy Ltd

Appendix 7 – Sound Transmission Loss Modelling Report (Updated)

Appendix 8 – Beach Otway Development Acoustic Monitoring

Underwater sound monitoring and acoustic characterisation of drilling activities by the Ocean Onyx Mobile Offshore Drilling Unit (MODU) and of associated support vessels at the offshore natural gas fields of the Otway Basin. Four AMARs in C-Lander moorings were deployed at increasing distances from the MODU. The results were compared against the previously modelled sound field predictions from the draft Environment Plan. The findings provided a better understanding of the propagation loss environment, enabling a recalculation/update of the modelled scenarios to provide more accurate distances to acoustic thresholds for impacts to marine mammals.

May 2021 —Newfoundland, Canada

Client: Wood PLC

Acoustic Monitoring Report

Acoustic monitoring and analysis providing soundscape characterization, marine mammal occurrence, and potential effects of underwater noise emissions on cetaceans as part of the overall environmental effects monitoring program. Characterizes the sounds produced by a Mobile Offshore Drilling Unit (MODU) and provides insight into the effects on marine life including auditory injury as well as possible displacement and masking of communications.