GSI Environmental Inc. (GSI) is an engineering and environmental science consulting firm committed to investigating, analyzing, and solving complex environmental problems around the globe. Our work ranges from practical solutions for environmentally sound industrial operations and property development to toxicological analysis and management of chemical hazards, sustainable development of water and other natural resources, and protection of our rivers, bays, and estuaries. Our staff combines practical know-how with leading-edge research to deliver timely, innovative, and focused solutions to your environmental challenges.