TDG Environmental was engaged to undertake an extensive condition assessment of a Water Authority client’s large diameter critical wastewater network in Canberra.
Completed approximately 42 kilometres of large diameter pipeline inspection within six weeks.
Some inspected assets that had not been viewed since construction because other technologies could not reach or access them.
Completed the inspection without flow control, reducing operational disruption, project complexity and associated risk.
Two operators were mobilised to Ingham, North Queensland, to complete smoke testing on sections of the sewer network. Non-toxic smoke was introduced into the sewer lines to identify potential leaks, defects, illegal connections, and inflow or infiltration points.
A critical wastewater asset within a high-traffic urban environment required urgent intervention due to severe blockages, restricted flow, and environmental risk.
A regional road in South Australia required urgent structural repairs after a large sinkhole developed above three 1800mm culverts beneath the roadway, a key route for grain haulage.
A regional council in northern New South Wales required a comprehensive inspection and condition assessment of its stormwater network to strengthen flood mitigation planning and inform future maintenance priorities.
A tidal channel in Sydney required the removal of asbestos-contaminated sediment to restore environmental safety and site integrity. The site presented complex conditions including limited access, tidal fluctuations, and a 1.4km haul route from the entry point. TDG Environmental was engaged by the client to deliver a compliant and efficient solution for safe waste removal, stockpile management, and site rehabilitation within a restricted tidal environment.
A canal in Sydney required vegetation removal and desilting works to restore proper water flow and reduce the risk of flooding during heavy rainfall. The site presented significant access challenges, including no ramp access and extremely tight working conditions. TDG Environmental was engaged to provide a solution that would overcome these limitations while ensuring safe and efficient removal of overgrowth and built-up sediment.
A heavily overgrown canal in Western Sydney required urgent desilting and vegetation removal to restore water flow and reduce the risk of flooding. Due to the steep embankments and absence of ramp access, traditional excavation methods posed significant safety risks. TDG Environmental was engaged to deliver a safe, efficient, and non-entry solution to clear the canal and prevent future blockages.
Confined Space Risk Eliminated: All works completed using equipment, removing the need for personnel entry.
Flow Restored & Flooding Prevented: Full desilting and debris removal ensured unobstructed water movement.
Efficient, Non-Invasive Execution: Completed without ramping or major civil works, reducing time and risk on site.
TDG Environmental successfully rehabilitated the sewer pipeline, achieving a fully sealed and structurally reinforced solution. The intervention prevented potential sinkholes, safeguarded the roadway, and ensured the long-term reliability of the asset.
Enhanced Structural Durability: The CIPP patching method provided a 100-year design life, ensuring long-term pipeline integrity.
Prevention of Future Sinkholes: We eliminated any chance of a sinkhole forming, which could have compromised the road surface.
Client Satisfaction: The asset owner and client were very happy with the quality and efficiency of the work performed.
A newly placed power pole was installed through an existing asset, causing a major obstruction and presenting a potential flood risk. The issue required a rapid and comprehensive intervention to prevent further damage and ensure the continued functionality of the affected infrastructure.
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AU 1300 330 294 
info@tdg.com.au 
