Seventy per cent of the safety upgrade works on the Keepit Dam wall have been completed.
The $100 million project will see the dam become fully compliant with NSW Dams Safety Committee standards for extreme weather events and seismic activity. SRG Limited was awarded the contract in 2016.
Progress to date includes the completion of demolition and concrete surface preparation works for the dam monolith blocks (concrete blocks that form the dam wall sections), and drilling for cable anchors, according to a WaterNSW spokesperson.
The dam is currently sitting at 0.5 per cent – one of the lowest levels on record.
In addition, more than 2.5km of post-tensioning anchor cables have been installed on the dam crest and the overflow section of the dam, and more than 35 tonnes of reinforcement bars have been installed for the spillway pier bearing pad.
Drilling of vertical holes on the right-hand side and left-hand side abutments and on the overflow section for cable anchors through the existing concrete into the foundation has also been completed.
A WaterNSW spokesperson said workers would now start drilling inclined holes for cable anchors through the existing concrete of the spillway piers. Installing, stressing and testing of cable anchors will continue over the next six to nine months.
The engagement of local sub-contractors and suppliers is estimated to be in excess of $2 million.
The WaterNSW project is funded by the NSW government, with public access to the wall cut off until further notice.
The project is expected to be completed later this year.