A vehicle mounted apparatus for high-pressure fluid blasting to remove material from or otherwise treat a surface, the apparatus comprising: a high-pressure fluid supply connected to a nozzle assembly containing at least one nozzle, the nozzle assembly being supported for movement along a track mounted transversely on the vehicle; and a suction device for conveying airflow and removed material through a conduit from the nozzle assembly to a treatment zone within the vehicle, the treatment zone having a separation means for accumulating removed material, a means for conveying airflow from the separation means to the suction device, and a means for conveying the removed material to a storage zone.