Mt Shamrock Quarry

Victoria has a growing demand for construction materials due to major infrastructure projects as part of the Victoria’s Big Build and civil construction for housing and industrial developments in the south east growth corridor. In Victoria, there is a current shortage of suitable approved quarry materials that are in close transport proximity to meet the needs of these projects. Mt Shamrock Quarry is ideally located for ongoing affordable supply to residential and commercial developments.

• The environmental effects of the project are unlikely to have the extent or complexity to warrant assessment under the Environment Effects Act.
• Potential effects on the environment, including effects on native vegetation and biodiversity, air quality, noise and vibration, land and water, are unlikely to be significant and should therefore be readily addressed through statutory processes and requirements under the Planning and Environment Act 1987, Environment Protection Act 2017 and Mineral Resources (Sustainable Development) Act 1990.

The minister's determination is publicly available on the following website along with submitted referral document and accompanying assessments:

This determination does not provide approval for the extension project to proceed, nor does it guarantee any subsequent approvals required for the proposed extension.

Holcim has since completed these assessments and lodged the Work Plan Variation application in June 2026 (see Next steps below).

For general information on the work plan application process, you can refer to the following website on the Resources Victoria (RV) website:

Next steps

In June 2026, Holcim formally lodged a Work Plan Variation application with Resources Victoria (RV) for the proposed extension, located in the north east corner of the existing quarry and entirely within the approved Work Authority boundary.

The application includes a Work Plan Document, Risk Management Plan, Rehabilitation Plan, and supporting technical assessments covering geotechnical, blasting, noise and vibration, air quality, ecology, groundwater, landscape and visual, cultural heritage, surface water, community engagement, and erosion control.

The assessment process is comprehensive and is expected to take several months. The immediate steps are:

• Work Plan Assessment: RV assesses the application and confirms whether it complies, requires further information, or is refused.
• Co-Regulator and Agency Referral: once satisfied, RV refers the application to relevant authorities such as the EPA, Southern Rural Water, and DEECA.
• Work Plan Endorsement: if all requirements are met, the Work Plan Variation is statutorily endorsed.

Endorsement does not authorise Holcim to begin work in the extension area. Further formal approvals are required first, beginning with a planning permit application through either Cardinia Shire Council or the Minister for Planning (via the Development Facilitation Pathway).

Holcim is committed to continuing to engage with the community throughout this project, and will provide updates as the project progresses. 
 

Please note

Holcim is not considering any changes to the following conditions as part of this project:

• Size and shape of the Work Authority Boundary
• Operating hours 7am-6pm Monday to Friday & 7am to noon Saturday (Critical Maintenance can occur outside these hours)
• Blasting time frames Monday to Friday 11am-12 Noon, and 2pm-3pm
• Location or size of the existing infrastructure
• Intensity of the operation
• Traffic routes in and out of the quarry
   

Keeping you informed

Holcim is committed to open dialogue with the community and will continue to provide updates as the project progresses. Should you have any queries, concerns or wish to provide feedback  project please use the the following dedicated avenues:

• Information website: www.holcim.com.au/mt-shamrock
• Consultation through the existing Environmental Review Committee (ERC) which meets quarterly
• All communications with the ERC and copies of all existing environmental performance are posted on this website
• Email contact: au-mtshamrock@holcim.com
• Phone contact: 0439 381 724