Clean Harbors, Inc. (“Clean Harbors”) (NYSE: CLH), the leading provider of environmental, energy and industrial services throughout North America, today announced that it will provide a live webcast of its Investor Day on Thursday, September 19, 2013, from approximately 8:30 a.m. to 12:30 p.m. (ET). All interested parties are invited to listen as Chairman and Chief Executive Officer Alan S. McKim, Vice Chairman, President and Chief Financial Officer James M. Rutledge and five additional members of the executive management team discuss the Company’s business, strategy, growth prospects and industry dynamics through a series of presentations, followed by a question-and-answer session. The live webcast can be accessed in the Investor Relations section of the Company’s website at www.cleanharbors.com. For those unable to listen to the live presentations, the event will be archived and available on the Company’s website. About Clean Harbors Clean Harbors (NYSE: CLH) is the leading provider of environmental, energy and industrial services throughout North America. The Company serves a diverse customer base, including a majority of the Fortune 500 companies, thousands of smaller private entities and numerous federal, state, provincial and local governmental agencies. Through its Safety-Kleen subsidiary, Clean Harbors also is a premier provider of used oil recycling and re-refining, parts washers and environmental services for the small quantity generator market. Headquartered in Massachusetts, Clean Harbors has waste disposal facilities and service locations throughout the United States and Canada, as well as Mexico and Puerto Rico. For more information, visit www.cleanharbors.com.