The new Olympia swimming pool budget has sprung a £2 million leak.
Dundee councillors will be told that the need for extra waterproofing and other works has put the final bill for the pool and car park up to £33.5 million.
One member said hard questions need to be answered by the authority after the pool which opened four months late also went dramatically over budget.
Liberal Democrat councillor Fraser Macpherson said: “At various stages of the construction process I expressed concern at the delays and here we have the net effect of this, which is a very considerable overshoot in terms of the budget.”
Labour Group leader Kevin Keenan said: “It may have been better to have invested more in verifying the work of the architects before going ahead with the project and ending up with this considerable overspend.”
A report prepared for Monday’s meeting of the council’s policy and resources committee by director of city development Mike Galloway confirms there were difficulties with the project, and specifies the reasons.
He will ask the committee to note the new final bill of £33.5 million, an overspend of £2.041 million, to cover the additional expenditure in the construction and fitting out of the pool and the adjoining Allan Street car park.
The 6.5% price hike can be funded from the overall allowance in the capital budget.
When the project was approved in 2010 the construction cost was set at £24.1 million and allowances of £7.3 million put the total up to £31.4 million.
The total of the extra works were £865,620, and added to that was an extra £900,000 for plant and staff costs for the project over-running by 18 weeks.
A further £275,000 was paid in post-handover works in the form of deferred works to avoid further prolongation costs.