Clean Harbors, Inc., together with its subsidiaries, is a leading provider of environmental and industrial services throughout North America. Everywhere industry meets the environment, we strive to provide sustainable services and products that minimize environmental impact, maximize environmental benefit through reuse and recycling and support our customers’ business needs. We are also the largest provider of parts cleaning and related environmental services to general manufacturing, automotive and commercial customers in North America and the largest re-refiner and recycler of used oil in North America. One of our primary goals is supporting our customers in providing innovative and environmentally responsible solutions to further their sustainability goals and solve complex environmental challenges. We have two operating segments through which we conduct our operations: (i) the Environmental Services segment and (ii) the Safety-Kleen Sustainability Solutions segment. • Environmental Services - Our Environmental Services businesses offer an array of services to customers.