Questions from Our Community Information Forum (November 2014)

At our third Community Information forum community members were provided with an update on the progress of the project and given the opportunity to raise any questions or issues with the project team members. The information provided below is a summary of the issues raised and is offered as general public information about the RENEX Integrated Waste Treatment & Resource Recovery Facility in Ordish Rd, Dandenong South. If you have any questions or would like more specific information, please contact us on (03) 8787 0444 or via email at community@renexgroup.com. RENEX will also be providing regular updates about the facility on our website – www.renexgroup.com

- What waste streams will RENEX treat now and in the future? RENEX has approval to accept and treat a number of waste codes. However, the majority of waste will be Category A, B or C contaminated soil. RENEX is also able to accept other Prescribed Industrial Wastes (PIWs), which can include hydrocarbon impacted oil, automotive shredder residue (mainly plastics and foams left over from car recycling) and tyres. After commissioning, RENEX is required to conduct proof of performance testing on any materials that we are currently not licensed to treat and subject to demonstrating the performance of the plant, licensing will be considered and granted by EPA. RENEX doesn’t have any specific plans at this stage to treat other PIWs but RENEX expects that it will add other PIWs to its capabilities over time, subject to EPA approvals. - Where do the waste streams come from? The wastes come from a variety of contaminated sites, which have included Industrial sites (old factories), old gas work sites, petrol stations and chemical sites. - How much waste will RENEX treat? RENEX expects to treat between 70,000 and 100,000 tonnes per annum. In previous years, over 400,000 tonnes of contaminated soil have been disposed of in landfills, so RENEX expects to address about 25% of the market. - Why is the plant this size? The nature of the contaminated soil market sometimes requires large volumes of soil to be moved from a site in a short timeframe. RENEX has built a storage facility that can cater for the expected volume for these projects. The thermal treatment plant has been designed to handle a throughput of approximately 100,000 tonnes per annum, and has been sized to cater for expected market demand.

- Where does the material go? After treatment, the soil will have a number of reuse opportunities as industrial fill or soil on commercial and infrastructure projects, depending on final classifications of the treated materials. Post treatment testing of the materials will indicate the reuse potential for the various treated materials. RENEX has had a number of discussions with parties that have indicated an interest in being able to collect and reuse the treated soil.

  - How is the heat used? The heat generated in the plant is re-used in the treatment process in two ways. Initially, the heat is used to bring the soil up to around 600oC in the Pyrolysis Kiln which converts the contamination into a gaseous form which is then combusted. The combustion process destroys the organic contamination. The second use for the heat is to create the steam that is used in the dryer to remove the moisture from the soil. The drying step is important as moisture negatively impacts the plant throughput. . This re-use ensures that RENEX is getting the best value from the heat created in our process, and minimises our need for any external energy source (such as gas). - What test results will be available on the treated wastes? RENEX will conduct a full suite of tests on the treated wastes – both to ensure that all organic contamination has been removed and the treated waste can be classified under EPA Guidelines. RENEX will also test the treated material for compaction and geotechnical properties to ensure the highest re-use potential. These test results will be made available to the purchasers of the treated material. - Can RENEX treat liquid wastes? RENEX is licensed to receive and treat certain liquids – mainly hydrocarbon and PCB impacted. . - Can RENEX accept drilling mud? RENEX is able to receive sludges under our license, subject to EPA classification of drilling muds. RENEX expects to be able to accept and treat drilling muds (which is the term used for the soil removed during drilling of a borehole – either with an auger or high pressure water). - How will liquid wastes be transported? All liquids will only be accepted when transported in EPA licensed vehicles. We expect the majority of liquids to be delivered by tankers of various sizes, however we are able to receive liquids in containers (IBC’s) and drums, which will be stored in our bunded areas within the facility. - What type of vehicles will RENEX accept? RENEX can accept wastes in trucks (up to semi-trailer in size), however we have generally been receiving soil in tandem trucks, which may also have a trailer attached. We can also accept material delivered in skip bins, provided they are EPA licensed and covered.