A career working for the state as a vocational rehabilitation counselor didn’t offer personal satisfaction for Mike Carbonneau of Littleton, New Hampshire. But subsequent employment in an uncle’s excavation business was another story. That job had ignited Carbonneau’s love of the outdoors, heavy equipment, and independence.After taking engineering and wetland delineation classes at the University of New Hampshire, he received his septic installer’s license from the state Department of Environmental Services in 2004 and opened Connecticut Valley Septic Design in Littleton. A year later, at age 32, Carbonneau earned his septic designer’s license.“I kept my nose to the grindstone and
