Derivation of site-specific environmental quality guideline values for fuel-contaminated soils on sub-Antarctic Macquarie Island

Scientists have established the first environmental quality guideline values (EQGVs) for fuel-contaminated soils on sub-Antarctic Macquarie Island, a critical step in protecting its unique ecosystem. Using a species sensitivity distribution model, researchers derived a protective concentration (PC80) of 97 mg/kg total petroleum hydrocarbons (TPH C9–C40), suitable for the immediate station area, and more conservative values for higher conservation zones. The study synthesized ecotoxicological data from 13 critical effect concentrations, representing diverse biota responses to fuels at various degradation stages and carbon contents. This groundbreaking work provides a framework for managing fuel contamination in sub-Antarctic and Antarctic regions, informing remediation efforts and broader environmental protection strategies.

King, C. K., Wasley, J., & Richardson, J. (2024). Derivation of site-specific environmental quality guideline values for fuel-contaminated soils on sub-Antarctic Macquarie Island. Integrated Environmental Assessment and Management, 20(6), 2334–2346. https://doi.org/10.1002/ieam.4989