The Presvac Hydrovac versatile hydroexcavator is designed for cold-weather operation and is offered as an option to be in full compliance with DOT regulations regarding collection and transportation of hazardous materials. The high-vacuum blower allows extraction of all types of soils, gravel, rock, clay, water and silt material, with knock-out features in the debris tank to minimize carryover. Modular filtration configured to blower size provides blower protection and minimal maintenance. It comes with heavy-duty 8-inch boom up to 25 feet long with six-way hydraulic power and wireless controls for all boom functions, soft start water pump, vacuum breaker and truck engine speed control. 800/387-7763; www.presvac.com.