The site was positioned adjacent to a large reservoir in Singapore and any uncontrolled release from the pipeline network into this surface water receptor, would have represented a ‘national incident’.
The study was completed using a logical, staged approach which included the following activities:
Stage 1 – Initial site visit, meetings and collection of data.
Stage 2 – Construction of a Site Conceptual Model (CSM) to identify potential release points (sources), ways in which contamination could migrate away from such areas (pathways) and the exact position of the reservoir (receptors).
Stage 3 – Design of a site investigation to determine the type of lithology and permeability within strata below ground, so that the rate of contaminant transport could be determined.
Stage 4 – Quantitative Risk Assessment for (1) Groundwater migration along local hydrogeologic gradients; and (2) Drainage Risk Assessment associated with rapid transport through the surface drainage network which discharges rainwater into the reservoir.
Stage 5 – Report writing and in-country presentation.
During the study, the Emergency Response Plan (ERP) for fuel releases was reviewed along with the position and operation of surface water drainage emergency shut-off valves.
Following communication with the customer, environmental issues associated with the temporary storage of fire water following an emergency incident, were incorporated into the wider study.
We were appointed to review the methodology and modeling to inform a Flood Risk Assessment in Essex.
We were engaged by the Department of Industry on behalf of the Marine Estate Management Authority (MEMA) to provide strategic risk assessment advice for the TARA process for a pilot project for the Hawkesbury Marine Shelf Bioregion and then for the State-wide marine estate.
The Brisbane River Catchment Flood Study is the most detailed and comprehensive flood study ever undertaken in Australia. The hydraulic models that were developed underwent rigorous calibration. A sophisticated Monte Carlo approach was used to hydraulically model 11,340 flooding scenarios. The result was a robust and defendable set of design events. The study was fully peer reviewed by a panel of independent experts.
Building on the Port of Cairns Cruise Shipping Demand Study undertaken by us in 2010 – 2011, we are working with project partner Arup to prepare an Environmental Impact Statement for the Port of Cairns Shipping Development Project.