Bam Ritchies has nearly completed ground investigation works in Gardenstown in Aberdeenshire.
The landslip, which first occurred in November last year, deposited debris from the cliff onto the road below and closed the main road due to the risk posed by the unstable slope.
Since last month Bam Ritchies has been undertaking investigation works and has completed five cable percussion boreholes with rotary follow on and a series of terrier boreholes and DCP probes. Two standpipe and two inclinometer installations are also in place.
Despite a further slippage earlier this month Ritchies has been able to start rope access works which involved three boreholes and a number of probe holes on the slope. It is also undertaking an initial investigation into the source of the water flowing onto the slope.
Atkins has been appointed to develop a solution and undertook the detailed specification for the ground investigation.
In a statement, Aberdeenshire Council said: “At this stage it is not possible to say what form a permanent solution to the landslip will take, or how long it will take to complete the work, but the council is communicating regularly with residents.
“Initial indications are that a full soil nailing solution could cost around £1.5M to implement, though this could change, and would require further road closures during the works.”
Earlier this week the council agreed that the design and physical works for project will be funded from its harbour, coast protection and flooding capital budget, and it is in talks with the Scottish government and local landowners about any financial help available to minimise the impact on its resources.