The Presvac Hydrovac is a versatile hydroexcavator designed for cold-weather operation and is offered as an option to be in full compliance with DOT 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 knockout features in the debris tank to minimize carryover. Modular filtration configured to the blower size provides blower protection and minimal maintenance. It has a 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. 800/387-7763; www.presvac.com.