|Location:||Clermont, Glenden, Middlemount, Moranbah, and Nebo, Queensland|
|Client:||Isaac Regional Council|
|Status:||Completed October, 2018|
|Sector:||Government, Energy and resources|
The Isaac Regional Council contracted the FKG Group’s civil engineering team to undertake remediation of effluent storage dam embankments and construct new levees at five locations throughout the Isaac Region. The objective of the project was to improve the long-term stability and management of seepage, and overall integrity of the dam structures.
The team successfully completed remedial works at dams in Clermont, Glenden, Middlemount, Moranbah, and Nebo, with differing requirements at each location.
Works on each site included the stripping of vegetation and removal of unsuitable material to make way for geotextile and rock protection. Dependant on the individual site, the downstream or upstream face of the dam was stabilised, sand filter and embankment toe drain installed, new levees constructed, and select secondary dams demolished. Localised drainage improvements were also made to site specific catchment areas where required.
During the project, a latent condition was discovered at one of the larger sites, which required the team to work with the client to re-sequence works while the issue was assessed and the design updated. Further program challenges were also experienced due to third party contractors, requiring additional resequencing of activities. All issues were quickly resolved without any overall impact to cost or project completion.
The supply of project materials also presented an additional challenge, due to a number of sites not having suitably located sources for in-spec material. The team were able to rectify this situation by working with the client and quarries to produce new ‘in-spec’ material, while remaining within budget and completing the project on time.
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