A leading authority on Ripon sinkholes has called on Harrogate Borough Council to ‘get a reality check’ and abandon plans to spend yet more money on the city’s leisure centre.

The council said this month it plans to carry out further ground stability measures at the site, which could take a year.

A report to be considered by HBC’s cabinet on Wednesday, says the work will cost £3.5 million. If approved, this will take the running total on the project to more than £18 million.

The original contract awarded in November 2019 to construction company Willmott Dixon, had a price tag of £10.2 million for delivery of the scheme. The completion date was originally scheduled for May 2021.

Chartered geologist and town planner Dr Alan Thompson, who was the principal author of a major report on the city’s subsidence issues, has said the site will always carry a “significant residual risk” of problems.

Dr Thompson added that by not considering relocating to a new site, the council was “ploughing more and more money into a scheme which is destined to fail”.

He has sent a letter by email to council chief executive Wallace Sampson and all cabinet members expressing his concerns.

But the council’s cabinet looks set to vote in favour of further expenditure on remediation works at the site, after issuing a statement a week ago, in which it said:

“Harrogate Borough Council is set to ensure people in Ripon can keep fit and active for years to come by carrying out ground stabilisation works underneath the original leisure centre.”

The statement added:

“Since the leisure centre was first built in 1995, there has been a monumental improvement in engineering technology to assess ground conditions. The contractor has used this technology to produce a comprehensive report and programme of work, which will be provided to the cabinet.

“If approved by the cabinet on 17 August, the investment project is due to start in the autumn. Once the stabilisation works are complete – anticipated to be the following autumn – the first floor of the original leisure centre will reopen.”

The council’s view is considerably at odds with Dr Thompson’s opinion on the situation.

Stantec report finally revealed

The chartered geologist and town planner, whose comprehensive 1996 Ripon gypsum report was funded jointly by central government and Harrogate Borough Council, has spoken out, after studying detailed reports completed in June by consultants Stantec into ground and structural conditions at the leisure centre site.

Ripon Leisure Centre

The reports, which were obtained following a Freedom of Information request to the council by Ripon resident and chartered engineer Stanley Mackintosh, were supplied to Dr Thompson, who said the documents:

“Have confirmed in great detail what was already known: that the leisure centre was built on very unstable land.

“They have also brought into sharp focus just how unstable it is, with the piled foundations deteriorating at an alarming rate, as a direct consequence of the ongoing nature of the subsidence processes.

“These findings have substantial implications in terms of the costs of further investigation and remediation, adding to those which have already been incurred.

“Disturbingly, however, the remediation which is being proposed — similar to that which has already been implemented beneath the new pool — cannot resolve the underlying cause of the problem: that of ongoing gypsum dissolution at depths of around 40 metres beneath the site.

“However much money is poured into this site, there will always be a significant ‘residual risk’ because of the unresolved problem of dissolution.”

Dr Thompson added:

“Astonishingly, the option of relocation has been excluded from consideration, for the stated reason that it is “not considered by Harrogate Borough Council to offer a more cost-effective approach”.

“By not allowing that option to even be considered, Harrogate Borough Council has blatantly tilted the balance in favour of ploughing more and more money into a scheme which is destined to fail. “

‘Outrageous failure’

In a direct appeal to Mr Sampson, Dr Thompson added:

“I would therefore urge you – and the council – to get a ‘reality check’ on what is going on here – in particular, the council’s outrageous failure to benchmark the escalating costs against the option of relocation.

“At the very least, proper, professional and independent consideration needs to be given to the concept of relocating the leisure centre and the new pool to an alternative site which is not affected by gypsum-related subsidence.

“Only by doing that, and by factoring the residual risk of staying at Camp Close into the equation, can the true cost-effectiveness of the options be properly compared.”

Read more:

• Ground remediation under Ripon Leisure Centre to cost £3.5 million
• Plan to open temporary gym at Jack Laugher Leisure and Wellness Centre
• Ripon leisure scheme, overdue and over budget

The Stray Ferret put Dr Thompson’s concerns to Harrogate Borough Council.

In response, a council spokesperson said: 

“Our consulting engineer has previously stated that in their professional opinion a do-nothing approach is not advised. And although there is no immediate change in the geological risk profile to the building – that was originally built in 1995 and has provided sport and leisure services for more than 25 years – it is recommended that ground stabilisation works are undertaken.

“Therefore, in order to ensure people in Ripon can keep fit and active for years to come, we plan on carrying out these necessary ground stabilisation works in the coming months.

“We’d also like to reaffirm these works are underneath the original leisure centre and not underneath the new six-lane 25metre swimming, which has had the necessary foundations in place.”