- Closed sites
- Green waste management
- Management of closed sites
- Leachate management
- Landfill gas management
- Landfill sites in the Clayton
- Responding to community pollution reports - how to get involved
Landfills in the Clayton South, Clarinda and Dingley Village area.
Clayton South, Clarinda and Dingley Village odours
EPA is focusing on the closed landfill sites and green waste treaters/composters in the Clayton South, Clarinda and Dingley Village area, which collectively have been causing the offensive odours experienced by the local community.
We receive pollution reports about odour from the community and follow up the reports by regularly inspecting landfills and composters, and then issuing notices to the owners of the sites to remediate issues that could lead to odour.
EPA expects odour in the area to decrease over the next 12 months as the Cleanaway green waste transfer station and Enviromix-composter, both significant odour sources, move out of the area. There are a number of closed landfills in the area which EPA are monitoring in terms of odours. Odours may spike at times over the next 3 years due to rehabilitation works. EPA is monitoring the works and have required the landfills to prepare and implement a range of plans to rehabilitate the sites and manage pollution. These works are currently being progressed and regularly monitored by EPA and external auditors as part of EPA notice requirements.
Green waste management
EPA is aware of two potential green waste odour sources in the Clayton South–Dingley area; the Cleanaway green waste transfer station and Enviromix – a composter. Both sites accept residential kerbside green waste. Cleanaway are using the site to initially store and grind the green waste, and within three days of receival transfer to a composting facility. Enviromix accept, grind up and compost the green waste within approximately six-weeks.
The Cleanaway green waste transfer station moved out of the area at the end of January 2019 with some site clean-up works still occurring. The Enviromix site is expected to close by the middle of 2019, meaning after that time there should be no green waste odour in the area.
Management of closed landfill sites
Most landfill sites have surrendered their landfill licence (with the exception of the Victory Road Landfill). EPA has issued Post Closure Pollution Abatement Notices (PCPANs) to these closed landfill sites, a statutory tool used by EPA to manage pollution risks posed by the continued rotting of waste, including the production of landfill gas and leachate . The notice also requires landfill owners to develop rehabilitation plans, aftercare management plans and monitoring programs to provide confidence to EPA and the community that best practice pollution abatement management is being applied at all sites. More information about PCPANS is available here.
EPA is focusing on the following issues at the landfill sites likely contributing to odour in the area:
- rehabilitation of landfills that have reached capacity
- leachate management
- landfill gas management.
Rehabilitation of the landfill may include:
- Cutting into waste and filling in low points on the surface of the landfill to ensure the site meets pre-settlement contour plans approved by the Council. The pre-settlement contour plan is what the shape of the surface of the landfill will be immediately after the initial capping work. It is designed to direct stormwater away from the landfill surface to stormwater ponds or drains.
- Capping of the waste with layers of geomembrane (heavy duty plastic), clay and topsoil which stops landfill gas escaping up through the waste to the surface causing odours, and also stops rain/stormwater from infiltrating into the waste producing more leachate leading to groundwater pollution.
- Vegetating the surface with grass or other forms of vegetation to stop erosion damaging the cap.
Leachate is the water that collects contaminates in the waste moving through a landfill. It varies in composition depending on the age of the landfill and the type of waste it contains.
Leachate can pollute the surrounding groundwater and block the landfill gas extraction system from extracting the gas, so it is vital that the landfill owners appropriately manage the leachate well into the future.
A hydrogeological assessment has been required from each site to assess the impact of leachate on the surrounding groundwater quality and its impact on the landfill gas extraction system. In addition, a number of sites are participating in a Regional Groundwater study which is assessing the regional impact to groundwater from having numerous landfills located next to each other.
Regional Clayton Groundwater Study
EPA has required Clayton Regional Landfill, Fraser Road Landfill, Deals Road Landfill, Victory Road Landfill and 2 older landfills – Ryans Road Landfill and Clayton Road Landfill both managed by Cleanaway, to participate in the Clayton Regional Groundwater Audit/study. The Audit has been conducted since 2004 with the final audit due in June 2019. The audit, conducted by an independent environmental auditor, will provide an assessment on groundwater quality in the Clayton South area and to recommend actions to clean up and lower any future risk of groundwater pollution. EPA will continue to monitor groundwater quality in the area post the 2019 audit.
Landfill gas management
Landfill gas is produced from the rotting of waste in the landfills and may pollute the air (odour) and land surrounding the landfill if not adequately controlled. EPA requires all closed landfills to meet specific limits at the surface and at the boundary of their sites through strict requirements in their PCPANs.
Futhermore, EPA has required many of the sites to prepare and implement landfill gas risk assessments. These risk assessments aim to increase extraction of landfill gas – which prevents landfill gas from causing odours and other gas-related issues. Landfill gas risk assessments are verified by external Environmental Auditors.
A number of recommendations to improve landfill gas extraction systems have been included in the risk assessments and are being implemented at the landfill sites.
Energy Developments Limited (EDL LFG (VIC) Pty Ltd) - power station
EDL extract the landfill gas from the Clayton Regional Landfill, Fraser Road Landfill, Deals Road Landfill, Ryans Road Landfill, Clayton Landfill and the Henry Street Landfill in the Clayton/Clarinda area. The extracted landfill gas is pumped to the corner of Deals Road and Ryans Road in Clayton South and is combusted to generate electricity under EPA licence.
Between November and January, EPA conducted a review of the entire landfill gas system in the Clayton area. EPA will continue working with EDL and the landfill operators to improve the landfill gas extraction network to collect more landfill gas and reduce the risk of landfill gas escaping the landfills through the surface and underground through the sides of the landfills.
Landfill sites in the Clayton area
Landfill sites currently undergoing rehabilitation in the area are:
- Clayton Regional Landfill – managed by Gilbert Consulting Pty Ltd for the City of Boroondarra, City of Stonnington, City of Glen Eira, City of Monash and the City of Whitehorse
- Fraser Road Landfill – managed by Baxter Business Pty Ltd (Cleanaway)
- Deals Road Landfill – managed by A.J. Baxter Pty Ltd (Cleanaway)
- Victory Road Landfill – managed by A.J. Baxter Pty Ltd (Cleanaway)
- Carroll Road Landfill – managed by Cleanaway Solid Waste Pty Ltd
EPA continue to monitor a number of other closed landfills in the Clayton South, Clarinda and Dingley Village areas, including:
- Henry Street Landfill
- Clayton Road Landfill
- Ryans Road Landfill
- Ball Road Landfill
- Heatherton Park
Clayton Regional Landfill
Clayton Regional Landfill stopped accepting waste in 2016 and are currently rehabilitating the landfill by installing a cap and erosion control measures. The works are set to be completed in the middle of 2020.
Inspections and operational audits conducted by independent environmental auditors have identified the site has high leachate levels and landfill gas management issues, potentially resulting in emissions of landfill gas and groundwater pollution.
Clayton Regional Landfill received an infringement notice in September 2018 with a penalty of $7959 for not adequately managing landfill gas at the boundary of the site as required by their Notice.
The landfill further received a Pollution Abatement Notice requiring further extensive monitoring and a Landfill Gas Risk Assessment to be completed with auditor verification which was submitted in December 2018. EPA will require further landfill gas management works in 2019 and a review of the risk assessment by the end of November 2019 to assess how successful the works have been.
Clayton Regional Landfill submitted a hydrogeological assessment (a report of how the leachate at the landfill is potentially impacting groundwater quality) in 2018 as required by EPA. The report highlighted leachate levels at the landfill (contaminated water produced by the rotting of waste) need to be lowered to avoid leachate polluting the groundwater and preventing extraction of landfill gas on site (as high leachate levels block the landfill gas extraction points). The landfill has a leachate extraction and treatment system and EPA will be requiring further works to upgrade the efficiency of the system and further assessment in 2019.
Fraser Road Landfill
Fraser Road Landfill stopped accepting waste in 2016 and currently has intermediate cover over the waste. Rehabilitation will commence in 2019, consisting of:
- re-shaping the surface of the landfill
- involving the movement of putrescible waste from overfilled areas to underfilled areas meeting approved contour levels
- construction of an cap over the waste
- planting of appropriate vegetation to prevent erosion of the cap
- future use of site may include a solar farm.
Environmental audits conducted at the site has found the site has high leachate levels and landfill gas management issues, which are potentially causing landfill gas emissions and groundwater pollution.
EPA issued an infringement notice in July 2017, with a penalty of $7773 for having high-leachate levels, which could cause offsite groundwater pollution. A Pollution Abatement Notice was issued in March 2018 after a Hydrogeological Assessment was completed, requiring further leachate management including further monitoring and assessment of what is required to extract more leachate from the site and an update of their existing Hydrogeological Assessment. EPA is expecting a report on the outcome of the notice by the end of April 2019.
Fraser Road Landfill continues to have landfill gas exceedances through the ground on some sections of the northern and eastern boundary. In 2018, Cleanaway conducted a number of upgrades to the system. EPA has since observed some improvement in landfill gas emissions. Further assessment is required in 2019 to assess the success of the works being undertaken and further actions will be required in the event of future landfill gas emission exceedances.
Deals Road Landfill
Deals Road Landfill stopped accepting waste in May 2016 and currently has an intermediate cover over the waste consisting of clay until capping starts in 2021. The timeframe of capping may be brought forward depending on the progress of the rehabilitation at the Fraser Road Landfill.
Inspections and environment audits of the Deals Road Landfill have highlighted the site has high leachate levels and landfill gas issues which can potentially lead to offsite emissions of landfill gas and groundwater pollution.
A hydrogeological assessment was completed for the landfill in June 2014. The site did not meet their interim target leachate levels. EPA has issued A.J. Baxter (Cleanaway) with a Pollution Abatement Notice to re-assess timelines and volumes of leachate that need to be extracted to meet target leachate levels to avoid groundwater pollution. EPA will be issuing further notices in 2019 to ensure target leachate levels are being met.
The Deals Road Landfill is currently exceeding landfill gas action levels at the boundary of the site. EPA issued the site a Pollution Abatement Notice in September 2018, which required A.J. Baxter (Cleanaway) to provide a Landfill Gas Risk Assessment by the end of February 2019 to assess the current risks of landfill gas offsite and what infrastructure is required to improve the landfill gas extraction system to meet landfill gas action levels required under EPA policy. Auditor verification of the risk assessment is required. EPA will continue to issue further notices in 2019 to ensure the site meets EPAs action levels.
Victory Road Landfill
Victory Road Landfill stopped accepting waste in November 2018. The green waste transfer station was located on the southern boundary of the site and was relocated to Dandenong South in early 2019.
The site is currently being rehabilitated and will be turned into a recreational park, managed by the City of Kingston. Rehabilitation works include reshaping of the landfill surface and construction of a cap over the waste.
Cleanaway will continue to be responsible for landfill gas and leachate management into the future, as part of the Post Closure Pollution Abatement Notice phase to ensure there are no offsite impacts to the surrounding area.
Site inspections and the latest audit report have indicated the site has some landfill gas migration issues and high leachate levels. EPA has issued A.J. Baxter (Cleanaway) with a Pollution Abatement Notice to conduct a review of their hydrogeological assessment which is due in April 2019. EPA has further been working with Cleanaway to ensure a landfill gas system is being installed which is being turned on after the green waste has been removed and a flare installed in the area of the previous green waste transfer station. This is expected to occur by the end of January 2019.
Carrol Road Landfill
The Carrol Road Landfill stopped accepting waste in October 2015. The northern section of the landfill has been fully rehabilitated. The southern section has yet to be rehabilitated due to historical overfilling with waste. The decision on changing the height and shape of the landfill is currently with Council.
Site audit reports and inspections have identified the site has high leachate levels and some landfill gas migration issues which may lead to offsite impacts.
The site conducted a hydrogeological assessment and have target leachate levels which need to be met. In 2018, the site received approval from South East Water to discharge treated leachate to sewer and have now commenced extracted as required.
The site has some landfill gas exceedances in the perimeter monitoring bores, which are reported to EPA monthly. A landfill gas risk assessment was undertaken in late 2017. EPA will continue to monitor the effectiveness of the risk assessment during 2019.
Henry Street Landfill
Henry Street Development Pty Ltd purchased the Henry Street Landfill from Cleanaway Solid Waste Pty Ltd in June 2018. The landfill ceased accepting waste in September 2013 and has since been rehabilitated (capped and landscaped). Henry Street Developments are now responsible for ongoing management of the closed landfill under an EPA Post Closure Pollution Abatement Notice, which includes ensuring that landfill gas and leachate do not pollute the areas surrounding the landfill.
EPA issued a Pollution Abatement Notice in September 2018 following landfill gas exceedances along the boundary of the landfill. The notice requires the landfill to submit to EPA a Landfill Gas Risk Assessment assessing the integrity of the current infrastructure and what is required to ensure no surface or underground emissions of landfill gas.
EPA issued a Pollution Abatement Notice in November 2018 for the landfill to revise their hydrogeological assessment which looks at whether the landfill has impacted the surrounding groundwater quality. The assessment is due to be submitted to EPA in May 2019.
Responding to community pollution reports - how to get involved
Continue to report to EPA if you're affected by odour pollution. An easy way to report is through our 24/7 pollution hotline: 1300 372 842 (1300 EPA VIC).
Cleanaway operates several closed landfills in the Clayton area. It also has a 24/7 hotline service for concerned residents: 1800 213 753. All calls are registered with an operator and followed up with a return call within 24 hours.
EPA needs to respond to odour reports as they are reported. Calling when you detect the odour is the fastest way of providing information to our officers. You can provide this information at any time via a phone call, lodging it online or emailing us. However, a call at the time of the odour event will give officers the best chance of verifying your report.
The odour should be easily detected and persist for more than a few minutes. Reporters should try to accurately describe the characteristics of the odour as well as weather conditions, particularly wind strength and direction. This information will give our officers the best chance of tracking an odour to its source, so they can take appropriate action.
If you would like to better understand the pollution reporting process, visit this EPA page.