Screenings transport, Direct Mix Concrete, Peninsula Quarries, Penrice Quarry and Mineral, and Southern Quarries are subsidiaries of Adelaide Brighton Limited (ABL), a leading Australian construction materials company with operations Australia wide, employing approximately 1,500 people nationally and are ranked three in ‘Indaily’s, SA Top 100 Companies’ list for 2017. The South Australian division of ABL covers several sectors of the concrete and quarrying operations and currently employs approximately 250 local employees and contractors.
Proudly operating in South Australia we are committed to sustainable business partnerships and are dedicated to continuous improvement projects, developing relationships with all stakeholders to build and sustain our states resources. We aim to create a mutually beneficial relationship with local communities, achieving economic profitability, whilst maintaining a sustainable environmental future for our community.
Quarries are open pit mines and are required for the extraction of essential aggregates for the construction industry. Once mined, aggregates are processed through crushing plants and sorted into different material grades; crushed stone, sands and gravels. These materials are necessary in the construction and maintenance to enable modern living; almost all houses, roads and infrastructure rely on materials supplied through quarries. Therefore, quarries are required for the continued growth, development and maintenance of the Australian economy. Australia has agencies dedicated to the continuous regulating, monitoring, redevelopment, rehabilitation and education of the industry: securing the future of mining and reducing environmental repercussions.
As a company, we are committed to lowering impact on the environment and effects to local residents. Both the Department of Energy and Mines (DEM) and the Environment Protection Agency (EPA) regulate our quarry sites. The sites operates under approved Mine Operations Plans (MOP’s), Programs for Environment Protection and Rehabilitation (PEPR’s), Dust Management Plans (DMP’s) and EPA licences. The MOP and PEPR documents have approved environmental objectives and criteria that must be adhered to.
We aim to continually reduce the carbon footprint within our processes, operations and facilities. This includes innovation, use of energy efficient machinery and the use of alternative fuels such as Adblue. Working with the EPA and other agencies, we aim to exceed our expected requirements.
Key areas of environmental management for all sites are:
- Air Quality (dust)
- Visual impact
- Site rehabilitation
- Blasting- Noise/Vibration
- Weed management
- Surface Water/Ground Water
Air Quality (Dust Management)
We aim to minimise and supress the sources of dust and are continuously looking for new strategies to reduce dust generation. The following are some of the strategies we have implemented to achieve our targets:
- Entrance road resealing – reducing material drag out onto public roads.
- Two trucks, carrying up to 30,000L of water operating within the Quarry – Water trucks are designed to spray down road surfaces, wetting the roads to reduce airborne dust from the quarry traffic.
- Installation of a 375kl water tank with fast fill for the two water trucks, which is located near the Primary crushing facility. This enables quicker turnaround times for the trucks and ability to spread more water around the quarry roads throughout the day.
- Progressively rehabilitating exposed/uncovered areas sooner. This reduces the potential for dust to become airborne from these surfaces.
- Real time Dust Monitors, measuring PM10 size fragments of dust, positioned around the site. These monitors inform site management by SMS when high readings are occurring. Once an SMS is received, site personnel can take positive actions to reduce dust as described in the sites Dust Management Plan (DMP).
- Under crushing plant sprinklers located around the main crushing plant. These sprinklers operate continuously and can be programmed to operate after hours.
- Vegetation and Tree Rehabilitation – Approximately 3-5 tonnes of Rye Corn grass seed is spread across the quarry site each year. Between 1-2000 trees are planted each year as maintenance (replacing dead plants) or in new, recently rehabilitated areas.
- Community notices of planned blasts where we deem there to be a high likelihood of visual dust.
- Wheel wash stations, compliant with EPA regulations – The Wheel wash ensures the ‘drag out’ of dirt and mud onto public roads is minimised by the trucks leaving the quarry, benefitting other road users and the local community.
- Regular Street sweeping to clean South Road and the Quarry entrance.
- Crushing Plant Dust Suppression – Citrus based foaming agent, which is applied to the rock during the crushing process to help contain and minimise airborne dust.
- Water sprays used throughout the crushing plant and site stockpiles to apply moisture to minimise airborne dust in windy conditions.
- Certain sections of the crushing plant are enclosed to contain the dust and minimise the effects in windy conditions.
- EPA has conducted and reported on independent dust monitoring at Sellicks Beach. This information can be found at; https://www.epa.sa.gov.au/files/12720_sellicks_beach_final_report.pdf
- For information, please read our Dust Management Planfor Sellicks Quarry and Quarterly reports submitted to the EPA for approval
- Blast monitoring – all blasts are monitored for noise and vibration under Australian Standards guidelines.
- Quarry blasts generally occur once per week. Blast times are generally mid afternoon
- Community engagement – Advance notice of planned blasts where we deem there to be a high likelihood of visual dust.
- Noise reductions – Main-crushing plant is located on the quarry floor and behind the Western Screening mound to reduce noise impacts from the quarry.
Visual Impact- Site Rehabilitation- Flora/Fauna
- Approximately 40,000 trees have historically been planted at Sellick Hill site since 1970.
- Laying of topsoil in areas to reduce impact of disturbed area and start growth.
- Seed dispersal – Rye Corn grass seed is spread across the site each year, improving visual amenity and progressively rehabilitating disturbed areas.
- The Western Screening mound is progressively rehabilitated and trees planted to screen operations. The Western Screening mound provides a visual barrier between the wider community and the quarry operations (open quarry faces and operating equipment).
- The top eastern quarry faces are progressively rehabilitated to reduce visual impact.
- Continuous revegetation projects using native trees at Sellicks Hill.
- The purchase and revegetation of more than 300 acres of buffer land surrounding the Sellicks Hill Quarry.
- Reduction of reliance on mains water – Recycled Water Connection, through the Willunga Basin Water Corporation to supply 50ML of Recycled water to the Sellicks Hill Quarry annually.
- Rainwater capture, storage and reuse, at all of our facilities.
- Using environmentally safe Polo Citrus products as a replacement for water dust suppression at our crushing plant at Sellicks Hill saving thousands of litres of water per year. For more details: https://www.polocitrus.com.au/products/dust-suppression/
- Wheel wash facilities are supplied by water captured in our dam and recycled through a series of settlement ponds.
Engaging Our Community – Ongoing commitment to informing and working with the Sellicks Community.
- Dedicated Engagement Strategy, which acknowledges the commitment of Southern Quarries to share information and experiences with the community and to be able to co-exist successfully in harmony.
- Recent Community open days and site tours providing local residents the opportunity to view the operations and have open and honest discussions directly with quarry management.
- Dedicated email address; email@example.com to allow residents to communicate directly with us.
- ‘One-on-one’, site tours for interested residents, register your interest through the Contact Us page or email firstname.lastname@example.org