Since 2016, GPM has owned the former Munmorah Power Station site on the NSW Central Coast. From 2016 to 2018, GPM managed the safe demolition of the power station and now oversees its ongoing remediation and rehabilitation.
The site covers approximately 720 hectares and is situated between Doyalson and Budgewoi in an area generally known as Colongra, which connects Lake Munmorah and Budgewoi Lake. It includes former Snowy Hydro land, previously used as a firefighting training area during power station operation days, and identified as a source of PFAS (per- and polyfluoroalkyl substances). Both this land and the former power station site were declared significantly contaminated under the Contaminated Land Management Act in May 2024. GPM is responsible for remediating areas of PFAS contamination and managing the site for safe future use.
There are a range of businesses and activities on the site, including:
GPM is progressing towards meeting the requirements of a Voluntary Management Proposal under the Contaminated Lands Management Act, including completing detailed site investigations and determining the best remediation solutions for the declared area. Documents related to the declared area can be found in the Documents section.
GPM operates the Munmorah site in compliance with Environment Protection Licence EPL 759 and Central Coast Council Development Approvals DA.413.2014.D and DA/589/2018. The licence and environmental data are available in the Documents and Environmental Data Portal sections.
Colongra Creek Ash Dam is declared a Significant Dam by Dams Safety NSW and managed under the NSW Dams Safety Act 2015 and the associated Dams Safety Regulation 2019. GPM is currently investigating closure options for the dam to remove the dam declaration and ensure the long-term safety and environmental stability of the site. For further information, please don’t hesitate to contact our team — we’re here to help and keep the community informed.
Welcome to our interactive environmental data portal, where you can access real-time data collected at various locations on our sites.
Our Community Consultation Group meet every three months to share updates, discuss findings, and hear directly from the community.
We value community feedback and are committed to listening to ideas and concerns. Summaries of our discussions and outcomes are available in our newsletter or in the minutes.
If you have any questions or suggestions, please don’t hesitate to get in touch:
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