GCI is proud of its heritage of forty (40) years of industrial air emissions (“stack”) testing experience, dating back to our initial inception in 1983. Incorporated as GCI since 2000, the company operates with consistent, quality services provided by over fifty (50) test technicians; certified crew leaders, each with a minimum of 15-20 years of experience; a fleet of eighteen (18) mobile monitoring laboratory trailers; an arsenal of interchangeable and redundant Apex equipment; in-depth QA/QC, safety, and training programs; and multiple nationwide offices to mobilize from; GCI is able to remain flexible and economical for our clients’ scheduling and financial constraints. We look forward to working with you!

510 Dickson Street

Wellington, OH 44090

USA