ARB is a multinational construction company headquartered in Lake Forest, Calif. Founded in 1946, it is a privately owned company with other branch offices in Bakersfield, Pittsburg, Ventura, Thousand Palms and Corona in California. The company constructs water and wastewater treatment plants, power plants, compressor stations, pipeline and related facilities. It also provides a wide range of engineering, construction, fabrication, maintenance and replacement services. The company serves various industries, including energy, petrochemical, and refining and mining companies, as well as developers, utilities and public agencies. ARB owns, operates and maintains a fleet of construction and support equipment that consists of more than 2,000 pieces. The company also undertakes a variety of industrial and underground projects.