History of Clean Harbors

Since its inception in 1980, Clean Harbors has grown to become the leading environmental, energy and industrial service provider and largest hazardous waste disposal company in North America. The company, founded by Alan S. McKim, began as a small four-person tank cleaning business. Today, Clean Harbors is a publicly traded company (NYSE: CLH) that maintains a vast network of service centers and waste management, treatment and disposal facilities and provides a broad range of services. Services include hazardous and non-hazardous waste transportation and disposal, laboratory chemical packing, emergency response, field services, and industrial maintenance. Mr. McKim continues to lead the company as Chief Executive Officer and Chairman of the Board.

Clean Harbors' growth is the result of geographic and service line expansion, market penetration, and the formation or acquisition of waste management companies and treatment, storage and disposal facilities. Its first major expansion was in the early 1980s with the acquisition of the Braintree and Natick, Massachusetts facilities. In 1989, Clean Harbors purchased Chem Clear, Inc., a company nationally recognized for its industrial aqueous waste treatment capabilities, with facilities located in Chicago, Cleveland, and Baltimore.

While the Chem Clear acquisition helped catapult Clean Harbors firmly into the waste disposal business, Clean Harbors continued to expand its geographic coverage by adding a Connecticut and a second Ohio treatment facility. Clean Harbors solidified its position as a full-service hazardous waste disposal provider with vast in-house disposal resources with its acquisition of the Kimball, Nebraska incinerator in 1995.

While broadening disposal and waste processing capabilities, Clean Harbors also further developed existing service lines such as field services. Since 1980, field service centers have been strategically located across North America to provide customers with emergency response services and to perform planned work on customer locations. These centers service thousands of customers in multiple industries. Today Clean Harbors is a recognized leader in environmental emergency response services.

Service lines have also been created to meet customer demand. Clean Harbors' laboratory chemical packing services, CleanPack®, was formed in 1986 to provide industries, schools and universities, as well as communities with vital services to manage the collection, packaging and disposal of laboratory chemical and household hazardous waste. With the creation of the Reactive Materials Teams, Clean Harbors can respond to the most hazardous and dangerous chemical and compressed gas situations. Beginning in the northeastern United States and extending over time to the South and West, today, Clean Harbors' CleanPack teams provide service throughout North America.

Clean Harbors Industrial Services was formed in 1998. The company's industrial service crews focus on industrial cleaning and maintenance projects that typically require fast turnaround and may include hydroblasting, liquid/dry vacuuming, sodium bicarbonate blasting, steam cleaning and chemical cleaning of equipment and systems.

In 2002, Clean Harbors acquired the assets of the Chemical Services Division of Safety-Kleen. The Chemical Services Division, which was made up of 55 service centers, 33 waste management facilities and 4,400 employees, when combined with Clean Harbors existing locations helped create the largest network of disposal technologies and environmental services in North America.

In 2007, Clean Harbors acquired Teris LLC with more than 550 employees, several field locations, an incineration facility in El Dorado, Arkansas, and a treatment, storage and disposal facility located in Wilmington, California. Clean Harbors’ investment in Teris further improves its ability to service customers and demonstrates the company’s commitment to maintaining the largest array of service offerings in the environmental services industry.

In 2008, the Company acquired two solvent recycling facilities in Chicago, Illinois and Hebron, Ohio. This acquisition broadened the company’s service portfolio and established a substantial presence for Clean Harbors in the solvent recycling market. By acquiring these two recycling facilities and constructing a solvent recovery plant at Clean Harbors’ El Dorado, Arkansas location, the company offers a broad spectrum of choices for addressing their solvent waste streams. Clean Harbors core services include the recycling of a variety of chemicals and solvents, which are available for sale, as well as offering tolling where material is recycled and return the customer for their reuse.

In 2009, Clean Harbors acquired Eveready Inc., a Canadian-based company that provides industrial maintenance and production, lodging, and seismic services to the oil and gas, chemical, pulp and paper, manufacturing and power generation industries. With the addition of over 2,100 employees, 79 locations, and a service fleet of over 2,400 truck and trailer units, Clean Harbors’ acquisition of Eveready broadens its energy and industrial service offerings and geographic reach in the United States and Canada.

Following Eveready, Clean Harbors completed a series of acquisitions to enhance and expand its energy and industrial services. Clean Harbors acquired additional capabilities in seismic services, industrial cleaning, pipeline maintenance, industrial lodging services and lodge construction, and catalyst and refinery material processing and recycling. In 2011, Clean Harbors acquired Peak Energy Services, bringing on the capabilities to service oil and gas drilling operations by providing surface rentals and specialized liquid, solid and sludge processing expertise.

In 2012, Clean Harbors made its largest acquisition in Company history, with the acquisition of Safety-Kleen. Safety-Kleen is a leading North American used oil recycling and re-refining, parts cleaning and environmental solutions company, with approximately 4,200 employees serving more than 200,000 customer locations in the United States, Canada and Puerto Rico. Safety-Kleen provides a broad set of environmentally-responsible products and services. Through the combination of Safety-Kleen and Clean Harbors, customers benefit from a broader range of environmental services.

Today, Clean Harbors has a network of over 400 service locations providing waste transportation and disposal, laboratory chemical packing, 24-hour emergency response, parts cleaner services, and field, energy and industrial services on customer sites or other locations. The Company owns and operates over 50 waste management facilities offering a wide range of disposal options including incineration, wastewater treatment, and landfill, recycling and specialty disposal services. Clean Harbors is the largest hazardous waste disposal company and the largest re-refiner of used oil into base and blended lube oils in North America.