Letter from the CEO and Chairman

Letter from the CEO and Chairman

Dear Investors:

Clean Harbors is the leading provider of environmental, energy and industrial services throughout North America. Founded in 1980, Clean Harbors provides a comprehensive suite of services to a diverse customer base, including a majority of the Fortune 500 companies, throughout the United States and Canada, as well as Mexico and Puerto Rico. Through our Safety-Kleen subsidiary, Clean Harbors is also a premier provider of used oil recycling and re-refining, parts washers and environmental services for the small quantity generator market.

For the past several years, the Company has grown substantially as we’ve successfully executed our corporate strategy which includes: expanding our service offerings and geographic coverage; cross-selling across segments; capturing large-scale projects; expanding throughput capacity; pursuing selective acquisitions; and implementing cost, pricing and productivity improvement initiatives.

2012 was another year of growth and achievement for Clean Harbors. Revenues exceeded $2 billion for the first time and we generated EBITDA of $374 million. Demand steadily increased in each of our operating segments as the year progressed. We capped off the year with the largest acquisition in our history – the $1.25 billion acquisition of Safety-Kleen. The addition of Safety-Kleen forms our next platform for growth.

Looking ahead, we remain encouraged about our prospects. In 2013, we are focused on fully integrating Safety-Kleen and capitalizing on the synergies available to us. The comprehensive sales and expense reduction initiatives we have underway at Clean Harbors will support our performance and the profitable growth we are projecting for 2013. At the same time, we see substantial cross-selling and long-term growth opportunities within each of our four businesses as the underlying industry and outsourcing trends remain favorable to us. I invite you to return to our website frequently for updates on our progress. Thank you for your interest in Clean Harbors.

Sincerely,
Alan S. McKim
Chief Executive Officer, and Chairman of the Board