Remediation of Former Service Station, Mosman, NSW

Martens and Associates were engaged to supervise and document the removal of underground storage tanks (USTs) and the remediation of a former service station site at Mosman, NSW.

Martens and Associates were engaged to supervise and document the removal of underground storage tanks (USTs) and the remediation of a former service station site at Mosman, NSW. Remedial works were required to support a future residential development on the site, which included a 3 storey basement carpark.

Remediation involved locating UST via ground penetrating radar (GPR); removal of remaining liquid waste inside UST; removal of USTs and fuel lines; excavation and off-site removal to licensed landfill of residual hydrocarbon impacted soils and weathered rock.

Project scope included:

• Locate UST via GPR, guide removal of liquid waste and empty tanks
• Supervise soil and weathered rock remedial works, which were guided by photo-ionisation detector (PID) and visual cues
• Waste classify hydrocarbon impacted soil and rock material
• Collect validation samples to confirm removal of contamination
• Assess validation results in light of current NEPM guidelines
• Preparation of validation report for NSW EPA auditor review and approval