I was told yesterday, that on Friday the construction people accidentally ripped out one of the 40m soil ground.....AND HOW MANY MORE ARE THERE? nobody knows.
It was ~8 ft long and 0.5" diameter buried in the ground. There is no drawing found to identify this exact building ground. They promised to replace this on Wednesday with a 10 ft long and 0.75" diameter.
The the wall will be resealed where the conduit enters the north west corner of the IFO room 104
There should be no concern about safety because the 40m building main ground is connected to the CES Mezzanine step-down transformer.