Evaluating the performance of an engineered cover at the Little Forest Legacy Site

The Little Forest Legacy Site (LFLS) is a low-level radioactive waste site under the control of ANSTO. Collaborative research at LFLS investigating the mobilisation of contaminants, waste stabilisation and site remediation has been ongoing between ANSTO researchers and UNSW for more than 10 years. The LFLS is currently subject to major site modifications, with the installation of an engineered cover over the legacy trenches to mitigate the infiltration of rainfall and surface water into the trenches. In this research collaboration, the behaviour of the site before and after the installation of the engineered cover is being examined, with studies of both the legacy trench area as well as test trenches constructed in the vicinity of the legacy trenches.