Founded in Olathe in 1946, Payne & Brockway, P.A., is one of the oldest Civil Engineering and Land Surveying firms in Johnson County. The firm provides professional services to Architects, Engineers, and Land Planners for: Design of buildings, streets, storm sewers, sanitary sewers, water lines; ALTA/ACSM Land Surveying; Research of Documents for Land Acquisition; Topographic Surveying; Platting; FEMA Elevation Certificates and Construction Layout.