Site investigation and remediation

Our proactive approach to the management of environmental risks is exemplified by our ongoing contaminated land investigation and remediation program, including former Endeavour Energy sites. This aligns with our Strategic Asset Management Program to investigate contamination that may pose a risk to workers excavating in network and non-network sites.

Reflecting this approach, an investigation commenced in November 2009 of the residential properties surrounding Fairfield Zone Substation. The investigations identified low levels of groundwater and soil contamination that appeared to be associated with a former creosote tank (removed in 1998). While the contamination poses no adverse health risk, the site was reported to the Environment Protection Authority in accordance with the ‘Guideline on the Duty to Report Contamination under the Contamination Land Management Act 1997’.

To date there have been a number of investigations, which have contributed to the development of a Remediation Action Plan (RAP). Based on recommendations from an Environment Protection Authority accredited auditor, we prepared a Work Plan for additional soil vapour testing to provide greater certainty regarding our remediation strategy for the site. The Work Plan will be implemented in 2011–12 in consultation with surrounding residents and key stakeholders.

We are also continuing our due diligence in monitoring environmental conditions in our field service centres, to aggregate our knowledge and ensure compliance with regulations. A key success in 2010–11 was the remediation of the former Springhill Transmission Substation yard, to facilitate the redevelopment of Springhill Field Service Centre.

Environmental policy

Greenhouse gas emissions

Sustainability policy

Environmental management system

Site investigation and remediation