Resource Design & Management (RDM) were engaged by NSW Soil Conservation Service (SCS) to provide surveying and spatial information services for the Urunga Wetlands Remediation Project in 2016 after the State Government announced the site would be remediated and any contaminated materials removed.
The Urunga Wetlands was until recently one of the most polluted natural environments in New South Wales. For a five year period between 1969 and 1974 heavy metals including arsenic, antimony and mercury leached from the adjacent Antimony Processing Plant into the melaleuca wetlands at Urunga on the Mid North Coast of NSW.
To achieve the transformation from toxic wasteland to a high-value environmental wetland that provides a recreational area for the enjoyment of the local community as well as providing an additional tourism drawcard for Urunga, was always going to be a complicated project.
The containment of the tens of thousands of tonnes of treated toxic material for generations to come required multiple control layers (Clay, Gravel, etc.) and several layers of both permeable and non-permeable geo fabric membranes, all of which need to be built and laid in strict compliance with the environmental engineering design’s performance criteria.
The setting out, monitoring, auditing and final reporting associated with the containment cell design was the responsibility of RDM. To achieve this RDM used an extensive suite of survey equipment for quality spatial data capture, machine guidance modelling and data presentation to achieve the exacting levels of quality control required for this project.
RDM was also responsible for the final Work as Executed survey of walkways, revegetation and boardwalks, as well as the environmental control measures. The data was used to provide the base plan for site interpretation signage, providing an accurate representation of final site layout and walking distances.
RDM is proud to have been part of such a positive project that has such strong environmental and community values and which has provided such a successful outcome on so many levels.