Work began in March 2011 and required crews to descend to depths of 25 m below ground to carry out repairs, which were mostly done at night due to high wastewater flows in the pipe during the day.
Sydney Water’s Managing Director Kevin Young said “Trenchless technology was used to line the pipe, which significantly reduced the impact on the environment and community.”
Crews worked across 14 sites in Earlwood and Canterbury to:
- Clean and repair 2108 m of the 1.8 m diameter wastewater pipe with a PVC liner
- Clean and repair 18 maintenance holes with an epoxy protective coating
- Clean and line one large maintenance hole with a calcium aluminate cement protective coating
- Remove 70 tonnes of silt and debris to increase the capacity and efficiency of the pipe.
The work also included installing stormwater structures, a walking bridge and spillway to contain the stormwater.
“I would like to congratulate our contractor, Water Infrastructure Group, who completed the work on time and within budget, achieving outstanding safety results, high levels of customer satisfaction and excellent performance results,” said Mr Young.
This work was part of Sydney Water’s SewerFix program, which improves the wastewater system and protects public health and the environment.