Founded in 1984, Youngdahl Consulting Group is a full-service geotechnical engineering, materials testing and special inspection firm. Its range of geotechnical consultation and testing services include subsurface investigations, slope stability analysis, foundation support and rehabilitation, seepage and damage control, excavation and fill placement, and pavement stabilization. The company undertakes various projects throughout California, including residential and commercial land development, industrial structures, schools, churches, libraries, health care facilities, dams, levees, canals and pipelines, and parks and recreation facilities. It has a trained staff that offers a wide range of geotechnical engineering and environmental services, including conceptual project development and construction. Youngdahl Consulting Group is located in El Dorado Hills, Calif.