North West Shelf Environmental Survey

sub sea pipeline with fish swimming in north west shelf Western Australia

Cardno was engaged by Quadrant Energy to undertake an environmental survey of representative subsea pipelines around Varanus and Airlie Islands, on the North West Shelf of Western Australia.

The study was carried out to inform an assessment of fish assemblages along the pipelines, using baited remote underwater video stations (BRUVS). By analysing the data to estimate fish populations and species diversity, a preliminary assessment of the habitat value and productivity of the pipelines could be completed.

Our team also reviewed Health, Safety and Environment and Quality Management Systems to ensure compliance with Quadrant's requirements and up to date Oil and Gas Industry standards, including appropriate ISN Accreditation.

The study is critical in understanding the ecological value of subsea infrastructure in order to make informed decisions regarding decommissioning that are based on robust scientific studies.

Our work is helping ensure that the legacy of these structures is not detrimental to the marine environment.