2021: Wallerawang Power Station (NSW)

“Jacobs Group (Australia) Pty Ltd (Jacobs) were commissioned by EnergyAustralia NSW Pty Ltd (EA) to undertake a poly-fluoroalkyl substances (PFAS) investigation at the Site.

Results of the investigation concluded that:

  • PFAS compounds were detected above LOR in soil sampled from within known on-site AFFF use areas (historical fire training area, fuel oil tank deluge system, extinguisher discharge areas and current storage locations).
  • PFAS contamination was not detected above the assessment criteria in soils at locations where PFAS products were not known to have been used.
  • Three groundwater wells (WEMW11, WM-MW04 and WM-MW07) returned results which exceeded the adopted guideline criteria for the protection of human health (drinking water).
  • It was the opinion of Jacobs that as these wells were located on-site, groundwater on-site is not used as a potable resource and the nearest potential potable groundwater user is located 1 km south east of the site (which is not directly hydraulically down gradient of the site), that PFAS compounds are unlikely to be detectable above the LOR within the potential potable groundwater well located down gradient from the site.
  • Groundwater samples (collected following regional rainfall) did not report PFAS concentrations above the adopted guideline criteria for the protection of human health (recreational use) or ecological receptors (fresh water ecosystems) from both on and offsite groundwater well locations.
  • Sediment samples collected from on-site surface water features and waterways up and downgradient of the site did not report PFAS concentrations above the adopted guideline criteria for the protection of human health (commercial/industrial land use: on-site and residential land use: off-site) and ecological receptors (commercial/industrial land use).
  • Surface water samples collected from on-site dams/ponds and waterways up and downgradient of the site did not report PFAS concentrations above the adopted guideline criteria for the protection of human health (drinking water and recreational use) and ecological receptors (fresh water ecosystems).
    Based on the conclusions detailed above, Jacobs considered that no further works were required to meet the objectives of the investigation.”

Wallerawang Power Station Project Demolition

2021 Wallerawang Power Station

2021: Wallerawang Power Station (NSW)

“Jacobs Group (Australia) Pty Ltd (Jacobs) were commissioned by EnergyAustralia NSW Pty Ltd (EA) to undertake a poly-fluoroalkyl substances (PFAS) investigation at the Site.

Results of the investigation concluded that:

  • PFAS compounds were detected above LOR in soil sampled from within known on-site AFFF use areas (historical fire training area, fuel oil tank deluge system, extinguisher discharge areas and current storage locations).
  • PFAS contamination was not detected above the assessment criteria in soils at locations where PFAS products were not known to have been used.
  • Three groundwater wells (WEMW11, WM-MW04 and WM-MW07) returned results which exceeded the adopted guideline criteria for the protection of human health (drinking water).
  • It was the opinion of Jacobs that as these wells were located on-site, groundwater on-site is not used as a potable resource and the nearest potential potable groundwater user is located 1 km south east of the site (which is not directly hydraulically down gradient of the site), that PFAS compounds are unlikely to be detectable above the LOR within the potential potable groundwater well located down gradient from the site.
  • Groundwater samples (collected following regional rainfall) did not report PFAS concentrations above the adopted guideline criteria for the protection of human health (recreational use) or ecological receptors (fresh water ecosystems) from both on and offsite groundwater well locations.
  • Sediment samples collected from on-site surface water features and waterways up and downgradient of the site did not report PFAS concentrations above the adopted guideline criteria for the protection of human health (commercial/industrial land use: on-site and residential land use: off-site) and ecological receptors (commercial/industrial land use).
  • Surface water samples collected from on-site dams/ponds and waterways up and downgradient of the site did not report PFAS concentrations above the adopted guideline criteria for the protection of human health (drinking water and recreational use) and ecological receptors (fresh water ecosystems).
    Based on the conclusions detailed above, Jacobs considered that no further works were required to meet the objectives of the investigation.”

Wallerawang Power Station Project Demolition
Contaminated Land Management Plan Prepared by Liberty Industrial Pty Ltd
For Green Spot