Council was asked to consider approving a proposed gabion wall at 174 Waterford Bridge Road to replace 14.5 metres of existing concrete retaining wall along a tributary of the Waterford River. The intent is to prevent further erosion without altering the channel width or significantly affecting the floodplain.
The project falls within the floodplain, and protection of areas of geological instability is permitted under Section 4.10.7(c) of the Development Regulations. The Environment and Sustainability Experts Panel reviewed the application and largely supported it, recommending engineering stamps, proper sediment controls, use of durable materials, allowances for settling, monitoring after construction, and consideration of vegetated or bioengineered gabion options.
The Panel also suggested requiring geotechnical and hydraulic assessments; however, staff do not recommend these due to the small scale of the project, the expected beneficial effects of replacing the concrete wall with a more pervious gabion structure, and the significant cost such studies would impose on the homeowner. All other Panel recommendations will be included in the final approval.
Decision: Approved unanimously.
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