iSi is one of Kansas' largest and most successful full-service environmental, health and safety consulting firms. It has done so by recognizing and responding to the challenges and needs of industry and government. Founded in 1991, iSi is a small business, is 100% woman-owned and is certified by the State of Kansas as a Small Disadvantaged Business Enterprise. Many of our clients have been with iSi for the majority of our years in business. As a result, we have been able to manage many unique projects. Over the course of the company's history, we've had opportunities to open field offices in other states when projects have warranted.