Consulting engineers provide expertise and leadership in the planning, design, modification or rehabilitation of public and private infrastructure. They are involved in designing virtually every construction and renovation project in the nation, from bridges and prisons to water purification plants and energy efficient generation and distribution systems. They design ventilating and electrical systems for new hospitals, figure out how to build tunnels through mountains without disturbing the local wildlife, and renovate wastewater treatment systems for bustling cities. They also solve environmental and ecological problems, like wetlands, brownfields, and hazardous waste disposal. Consulting engineers frequently lead teams of multi-disciplined professional on complex technical projects that may include: investigations to determine the feasibility of a project  collection of design data  preparation of plans, specifications and cost estimates  management during construction  assistance during start up, research and development  and a variety of other types of consultations Consulting engineers serve as expert advisors to state, local and federal government agencies, and to private businesses and industries. A consulting engineer is technically qualified by education and experience, and is motivated by personal responsibility and professional integrity. Consulting engineers are licensed by the state. ~ (excert from The American Council of Engineering Companies of Wisconsin)