Scenic Rim Regional Council

Sarjaro was engaged by Scenic Rim Regional Council to remove silt from two ponds at the Tamborine Mountain Botanic Gardens. Sarjaro undertook the comprehensive pond remediation project during the winter season and the works involved the following:
• Site Establishment - Temporary fencing, signage, equipment delivery, and erosion control.
• Pond Remediation - Included bypassing the 70 litres per second water flow of the stream using four large pumps (24 hours an day for the duration of the project), excavation dewatering, constant sediment drying, and phased excavation.
• The Excavation works included excavating wet sediment and stockpiling approximately 1,000m³ of silt near the rock bridge.
• Soil remediation included the Blending lime / sawdust and fly ash into the silt for stabilization using an excavator with a sieve bucket.
• Loading, Transporting and disposal works followed the treatment works and care was required to move material from the top of the mountain down to the bottom for disposal at JGI Quarry and Recycling in Oxenford.
• Environmental & Safety Measures: Ongoing water quality testing, fauna assessment, and relocation took place with spotter catcher during the works.
• Structural Works: were also ongoing and this included Installing culvert plugs, inspecting pond conditions, and implementing temporary access solutions throughout the project.

This project ensured environmental compliance and site stability for future use, while enhancing the environmental health and aesthetics of the Botanic Gardens for the local community to enjoy for future generations.