The Vactor HXX Prodigy uses hydro-excavation to perform non- destructive digging. The HXX system blasts away soil with water jets of 10 to 20 gallons per minute, at intensities from 1,500 to 2,500 psi. A variable-pressure triplex pump allows water-pressure adjustment at the push of a button. To facilitate digging in frozen ground, optional on-board 400,000- or 900,000-BTU water heaters are available. For dry- digging applications, the Prodigy is available with an optional air-excavation system. The unit features an above- deck compressor system requiring no holding tank.