Freese & Nichols

From the website:Black Veatch is a global engineering, procurement, consulting and construction company specializing in infrastructure development. Our services and solutions address resilience, scale and sustainability of the world's most important infrastructure assets.

HNTB Corp in Houston is fueled by their unique spark, which inspires innovation and imagination in all aspects of their work. This spark drives them to make a positive impact in the communities where they are located, showcasing their commitment to excellence and creativity. Generated from their website's infomation

Terracon is a leading provider of geotechnical, environmental, construction and other related services. The company s geotechnical services include subsurface exploration and testing, foundation analysis and design, in-situ testing and performance monitoring, earth structures and retention systems, dynamic analysis and evaluations, soil stabilization and ground improvements, ground water control solutions and pavement designs. Environmental services include site assessments and investigations, remedial designs and implementations, wetlands delineation and mitigation services, industrial hygiene and indoor air quality solutions, regulatory compliance services, environmental management systems and solid waste planning. Construction services include on-site observation and monitoring programs, quality control and assurance programs, field and laboratory testing, material selection consulting, forensic investigations and construction management services. Terracon is headquartered in Lenexa, Kan., and has operations in Houston.