Clean Harbors Inc.

History

Year	Detail
1980	Alan S. McKim founded Clean Harbors as a four-person tank cleaning business. Over the years, the company became North America's environmental and industrial service provider and largest hazardous waste disposal company.
1989	Clean Harbors acquired Chem Clear, Inc., an industrial aqueous waste treatment company, firmly establishing Clean Harbors as a waste disposal provider.
1995	The company purchased an incinerator facility in Kimball, Nebraska, marking a significant step in expanding its hazardous waste disposal capabilities.
1998	The company formed its Industrial Services division. The industrial personnel perform industrial cleaning and maintenance services that require fast turnaround, such as hydro-blasting, liquid/dry vacuuming, sodium bicarbonate blasting, steam cleaning, and chemical cleaning of equipment and systems.
2002	Clean Harbors acquired the assets of Safety-Kleen's Chemical Services Division. This purchase added 55 service centers, 33 waste management facilities, and 4,400 employees to Clean Harbors’ existing resources.
2007	Clean Harbors acquired Teris, LLC, with its 550 employees, several field locations, an incineration facility in El Dorado, Arkansas, and a treatment, storage, and disposal facility in Wilmington, California.
2008	The Company acquired two solvent recycling facilities in Chicago, Illinois, and Hebron, Ohio. This acquisition broadened the company’s service portfolio and established Clean Harbors' substantial presence in the solvent recycling market.
2009	Clean Harbors acquired Eveready Inc., a Canadian company providing industrial maintenance, production, lodging, and seismic services. This acquisition broadened the company's energy and industrial service offerings and geographic reach.
2011	The company acquired Peak Energy Services, bringing the capabilities to service oil and gas drilling operations by providing surface rentals and specialized liquid, solid, and sludge processing.
2012	The company acquired Safety-Kleen Inc., a North American used oil recycling and re-refining, parts cleaning, and environmental solutions company, in an all-cash transaction valued at approximately $1.25 billion.
2013	Clean Harbors acquired Evergreen Oil, a California-based company specializing in recovering and re-refining used oil, to enhance services and expand geographic reach through organic growth.
2015	The company acquired Thermo Fluids, Inc., to expand its used oil collection and recycling capabilities and strengthen its presence in the western U.S.
2017	The company acquired Lonestar West Inc., a Canadian-based hydrovac and vacuum truck service provider, further broadening its daylighting and hydro excavation services throughout the U.S. and Canada.
2018	Clean Harbors acquired Veolia’s U.S. industrial cleaning business. This acquisition provided significant scale and capabilities while increasing the size and geographic reach of the company's existing U.S. industrial services business.
2021	The company acquired HydroChemPSC, a U.S. provider of industrial cleaning, specialty maintenance, and utility services, for $1.25 billion in an all-cash transaction.
2024	The company acquired HEPACO, an environmental provider of field and emergency response services in the Eastern U.S. Clean Harbors purchased HEPACO from Gryphon Investors for $400 million in cash.