GSI Engineering LLC was Established in 1973, GSI has provided environmental consulting, geotechnical engineering, drilling se ... rvices, and construction materials testing services throughout the Midwest with offices in Grand Island, Nebraska, Kansas City, Kansas, Des Moines, Iowa, and our headquarters in Wichita, Kansas. GSI professionals are committed to helping our clients manage risk associated with geotechnical and environmental issues and the quality control of materials and processes on construction projects. More than 7,500 clients have partnered with GSI because our engineers, geologists and scientists have delivered economical and practical solutions to their difficult problems. GSI’s staff consists of more than 100 experienced environmental professionals, geologists, engineers, engineering technicians, safety-trained drilling personnel and community support staff. Whether your project needs several soil borings and foundation recommendations or a state of the art remediation system to clean up soil and ground water, our professionals are committed to providing clients with superior service. Our multi-office arrangement allows us to serve clients on a local and regional basis. GSI has seven Midwest offices: Wichita, Manhattan, Kansas City, and Salina, Kansas; Grand Island, Nebraska; and Des Moines, Iowa. In addition to completing work in these states, GSI also serves clients in Missouri, Oklahoma, Arkansas, Colorado, Minnesota, Illinois, and South Dakota. read more