The HV-55 hydroexcavator from GapVax has a 12.5-cubic-yard debris body and water tanks from 400 to 1,400 gallons. It comes with a positive displacement blower rated at 5,250 cfm and 28 inches Hg. The filtration design includes five cyclones that prolong the life of the filter bags and eliminate the threat of material entering the vacuum pump. The full-opening tailgate is field adjustable and has four fail-safe, individually adjustable locks that ensure a complete seal. Options include interior polymer coating, cold-weather package, sludge pump, wireless remotes, washdown system and stainless steel body. 888/442-7829; www.gapvax.com.