SCARBOROUGH BOROUGH Council this week confirmed cost overruns of £18M on its Castle Headland coastal defence project.
It has set contractor Edmund Nuttall's bill at £46.65M, compared to the original £28M budget.
But the contractor and the council remain locked in battle over the cost of repairing more than 50 of the mass concrete Accropodes, used to defend 1.5km of shoreline.
Details of the final bill and continuing row are revealed in a report to be discussed by the council at a cabinet meeting next week.
'There was ultimate agreement upon a fi gure which each party could accept in settlement of the contractor's entitlement, namely £46.65M, ' says the report.
'The Department for the Environment Food & Rural Affairs ultimately on 21 January 2006 transferred grant monies to the council to enable settlement of the dispute at this figure'.
The council rushed through payment to Nuttall, ahead of agreement by its cabinet, to avoid making interest payments calculated at £1,000 per day.
Nuttall had sought a total payment of £55M after carrying out 160 contract variations.
Consultant High Point Rendel, acting for the council, initially accepted claims worth £5M. This was later revised to £9M but after extensive negotiations claims totalling £18M were agreed.
The report also reveals that a budget of £100,000 has been set aside to continue seeking advice on the damaged Accropodes.
This dispute has been running since broken structures were discovered in the summer of 2004 (NCE 9 September 2004).
The council will use the cash to carry out laser scan surveys of the coastline to examine and track the damage.
It is also seeking further advice on taking legal action against parties involved in the design and placement of the Accropodes, including Nuttall, High Point Rendel and Sogreah.