Clean Harbors Environmental Services Inc.

Clean Harbors is the leading provider in environmental, energy and industrial services throughout North America. The Company serves a diverse customer base across a broad range of vertical markets, which includes a majority of the Fortune 500 companies, and numerous governmental agencies. Clean Harbors is organized into four business units: Technical Services, Industrial and Field Services, Safety-Kleen, and Oil and Gas Field Services, focused on specific customer segments, and offer an integrated platform of services to meet the specific needs of each individual vertical market. Clean Harbors Technical Services provide a broad range of hazardous material management and disposal services including the collection, packaging, transportation, recycling, treatment and disposal of hazardous and non-hazardous waste. Clean Harbors Industrial and Field Services provide industrial and specialty services, such as high-pressure and chemical cleaning, catalyst handling, decoking, material processing and industrial lodging services to refineries, chemical plants, pulp and paper mills, and other industrial facilities. Field Services provide a wide variety of environmental cleanup services on customer sites or other locations on a scheduled or emergency response basis. Clean Harbors' Safety-Kleen subsidiary is a leading North American used oil recycling and re-refining, and environmental solutions company supported by the largest re-refining capabilities to convert used oil into base and blended lube oils. Clean Harbors Oil & Gas Field Services provide exploration, surface rentals, solids control, and environmental services to the energy sector serving oil and gas exploration, production, and power generation. Headquartered in Norwell, Massachusetts, Clean Harbors maintains an industry leading portfolio of waste disposal and solvent recycling facilities and service locations throughout the United States and Canada, as well as Mexico and Puerto Rico.