The Company For over 30 years TSI has been Chicago's go-to snow and ice management company. TSI has built a reputation for exemplary service by working to continuously improve the services we provide clients. We have a loyal client base that includes Southwest Airlines, MB Financial, Baderbrau Brewing, and LG Electronics. Our Services We focus on helping large, zero-tolerance clients reduce risk and liability from slip and fall accidents. We service parking lots and sidewalks throughout Chicago and surround areas. Contact us directly for more information on how we can help you this winter. The Staff TSI’s staff is made up of professionals with years of experience and formal training in winter weather. Our staff includes multiple CSP’s and a private meteorologist that provides real-time updates on weather conditions allowing us to have an efficient and timely response to any winter storm. Our continuing education initiatives revolve around membership in trade organizations such as SIMA (Snow and Ice Management Association), and the ASCA (Accredited Snow Contractors Association).