Geotechnical Services is an employee-owned consulting firm that specializes in environmental services, geotechnical engineering, professional drilling, construction materials testing and special inspection services. With six Midwestern offices, the company has performed approximately 75,000 projects for 7,500 clients in Missouri, Nebraska, Iowa, Oklahoma, Texas, Arkansas, Colorado, Minnesota, Illinois and South Dakota. Geotechnical Services offers a variety of services, including regulatory compliance evaluations, site assessments, core drilling, design of shallow and deep foundations and retaining walls, materials engineering, field and laboratory testing of aggregates and plan and specification review. Its client base consists of agribusiness, municipalities, developers, realtors, architects, engineers, contractors, utilities, manufacturing companies, financial institutions and federal and state government organizations. Geotechnical Services is headquartered in Omaha, Neb., and has been in business for more than 30 years.