The 30m test borehole they would have done would have given them the geotechnical data, but the video later in the thread confirms what I was told on site. Its all well and good having the materials on site, but it restricts the works.The club might not get anything out of it, depends on the contract and whether the contractor took on the risk on the earthworks.
I'd be surprised though. The geotechnical data should have told them the ballast was there, so they'd have accounted for it in their risks and opportunities.