The construction has been standing for months. The sand material installed by the civil engineer for the foundation mattress was stockpiled in the sand pit, extracted from somewhere. It is without quality control, certification, etc. In the meantime, a contaminant analysis was carried out, which showed that it is contaminated material. Arsenic and nickel are elevated. In particular, arsenic is at 14, just below the standard value according to LAGA for Z1, for landfill disposal.