Design and construction of Castlemaine Landfill

In 1994 a new landfill was designed and constructed in accordance with strict environmental and regulatory requirements on a former alluvial gold mining site in Castlemaine, central Victoria. The landfill includes staged filling in specially constructed cells, leachate management and progressive rehabilition. A major geotechnical aspect of the project was lining the base of the landfill cells with a low permeability liner constructed by ripping, breaking down, moisture conditioning and compacting on site weathered sedimentary rock. The linker construction works were generally performed in accordance with specified relative compaction, moisture and particle-size requiremenets to achieve a median permeability of between 4.0 x 10^-9 and 9.4 x 10^-9 m/s.