The large-capacity HX-12/27 hydroexcavator from Ramvac by Sewer Equipment has a 12-yard debris tank. It comes standard with a temperature-controlled environmental chamber and a directional discharge system to off-load debris back into the excavation site when done, without the mess of dumping the tank. It has a long-range wireless remote, NEMA 4 electrical system, a 400,000 Btu water boiler, a three-stage filtration system and a 5,400 cfm blower with 27 Hg. It is available with a RamAir air excavation system for when water cannot be added to a problem area. 800/323-1604; www.ram-vac.com.