City of Sydney Raingarden Capacity Building

Storm’s visits have resulted in a quality control system for raingardens with minimal re-working and savings for all.

City of Sydney Raingarden Capacity Building

The City of Sydney (“the City”) has embraced Water Sensitive Urban Design (WSUD) technology, installing raingardens to intercept and treat stormwater across a number of its neighbourhoods.  Aligning with the City’s Sydney 2030 vision, the City integrates raingardens with its street upgrades projects with the aim to conserve water, reduce stormwater pollution and green our streets.

These raingarden works are coordinated by the City Infrastructure and Traffic Operations (CITO) Unit under City Operations Division at the City .

The City advertised formal quotation to engage WSUD experts to review the raingardens designs prepared by the City, provide professional design advice and assist in supervision with quality control during the construction of raingardens.

The City’s main focus in engaging WSUD experts was to transfer knowledge about WSUD to City staff designing and managing construction of raingardens.

Storm staff would assist the Project Coordinator of the City by inspecting raingardens at key hold points.  We shared our experience in the key design aspects, the monitoring of critical elements during construction, resolution of services conflicts and design adjustment where anomalies in survey were uncovered.

This was a hands-on role that we adopted to build the capacity of the City.  Storm inspected about a dozen raingardens over a year, sometimes visiting 3-4 times per site.

Iraj Shrestha is a Project Engineer at the City of Sydney.  “The results of Storm’s visits have been to develop quality control system for raingarden construction” he said.  “Because of the collaboration with the City and the Principal Contractors, there is now minimal re-working of raingardens required, resulting in savings for all” he added.

With the consultancy program complete, the City has now implemented the learnings and findings to ensure quality management and planning for raingardens in the future.”