BHP Billiton Illawarra Coal
  • Preliminary Contamination Assessment
  • Environmental Soil Sampling
  • Laboratory Testing


South Kembla Colliery Portals Project

Douglas Partners conducted a Preliminary Contamination Assessment at the ‘pit-top’ area of the mine portal site known as the South Kembla Colliery Portals, Wongawilli. The assessment was required for environmental duediligence purposes, which forms part of planned rehabilitation for the site. Forbes Rigby Pty Ltd commissioned the assessment on behalf of BHP Billiton Illawarra Coal, who was responsible for rehabilitation of the land. The site comprised the ‘pit-top’ area of the South Kembla Colliery Portals, which accessed the Wongawilli Coal seam and previously formed part of the infrastructure of the Wongawilli Colliery (Elouera Colliery) located approximately one kilometre south of the pit-top.

The scope of the assessment included a site walkover inspection and environmental soil sampling, which was conducted in two stages. The first stage involved sampling from both gridbased and targeted sampling locations comprising six test pits and three near surface sample locations collected from areas not easily accessed by plant equipment (i.e. down gradient batter). The second stage involved the collection of soil samples from a further four locations. 
Selected soil samples were analysed at our NATA-accredited laboratory for a range of potential organic and inorganic contaminants including heavy metals (As, Cd, Cr, Cu, Hg, Ni and Zn), pH, total recoverable petroleum hydrocarbons (TRH), monocyclic aromatic hydrocarbons (Benzene, Toluene, Ethyl Benzene and Xylene - BTEX), polycyclic aromatic hydrocarbons (PAH), organochlorine pesticides (OCP), Poly-Chlorinated Biphenyls (PCBs) and asbestos.
In addition to outstanding environmental services, DP provided exceptional client service and support to meet site supervision requirements, resolved unexpected issues and ensured a timely project delivery.
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