Kyogle Off-Stream Storage – Landslip Remediation and Sludge Lagoon Construction - CAN-RFT-2011186

A project to be undertaken

Sludge ponds Completion of designContractor to determine if a temp access road is needed to avoid a landslip, if it is, construct the temp access roadDemolish the two existing sludge ponds and construct a replacement sludge pond, ensuring that the Council can pump water to the main pond during the worksRemoval of all water and sludge from the two existing sludge ponds, transport to the Kyogle Sewerage Treatment Plant, and placement within a bunded location, pre-prepared by the Council. The Council will lawfully dispose of the sludge at a later dateConstruction of one concrete-lined sludge pond and forebayTest excess material and lawful disposalRoad constructionPerimeter fence constructionLandscaping Slips B and C Completion of designConstruction of two temp roads to access the slips by progressively installing screw piles, concrete block walls, concrete, culvert pipes and rockInstall sheet piles into the river to assist in dewatering the toe of the bank, pump water from the bunded area, and removal of sheet piles when no longer requiredRemoval of vegetation and lawful disposalProgressively install geogrid, aggregate, rock, and concrete blocks to retain the land surrounding the slipsOnce the slip remediation works are complete, leave the screw piles, concrete block retaining walls, and concrete slabs within the temporary roads, remove the aggregate surfacing, cover with excess fill, topsoil, and grass seedLandscaping