Level 3 Investigation report – interim report

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NOPSEMA's Level 3 investigation into Schlumberger Australia Pty Ltd's Otway Basin 2D Marine Seismic Survey examined a petroleum survey activity conducted across three offshore blocks in South Australian, Tasmanian, and Victorian waters. The investigation commenced on 17 June 2021 following NOPSEMA's acceptance of the operator's environment plan in November 2019. The survey area contained environmentally sensitive biologically important areas (BIAs) designated for blue whale foraging under the Commonwealth Blue Whale Conservation Management Plan. This interim report documents NOPSEMA's findings and inspector recommendations regarding the survey's compliance with offshore petroleum safety and environmental management requirements.