Executive Management


Alan S. McKim
Chairman and Chief Executive Officer
Alan S. McKim
Chairman and Chief Executive Officer


Alan S. McKim founded the Company in 1980 and has served as Chairman of the Board of Directors and Chief Executive Officer since its founding. He was named President of the Company in September 2016. He serves as a director of most of the Company's subsidiaries. Mr. McKim holds an MBA from Northeastern University's D'Amore - McKim School of Business. He now serves on Northeastern University's Board of Trustees, and he holds an honorary doctorate from the Massachusetts Maritime Academy. Mr. McKim... 
Michael L. Battles
Executive Vice President and Chief Financial Officer
Michael L. Battles
Executive Vice President and Chief Financial Officer


Michael Battles was named Executive Vice President and Chief Financial Officer in January 2016. He joined Clean Harbors as Senior Vice President, Corporate Controller and Chief Accounting Officer in September 2013. Prior to Clean Harbors, Mr. Battles spent 12 years in a variety of senior financial positions at PerkinElmer Inc. (NYSE: PKI), a global leader in human and environmental health. Most recently, he was Vice President and Chief Financial Officer of PerkinElmer’s Human Health business. Pr... 
Mark G. Bouldin
President, Kleen Performance Products*
Mark G. Bouldin
President, Kleen Performance Products*


Mark Bouldin was named President, Kleen Performance Products in January 2016. He was previously Executive Vice President of Supply & Refinery Economics. He joined Safety-Kleen in April 2014 as SVP Oil Re-Refining Specialty Products. Prior to Safety-Kleen, Mark held several sales and management positions at Shell Oil Company and Sunoco, as well as being President of PebbleCrest Materials for a seven-year period. Mark earned a Masters of Technical Chemistry from Braunschweig University of Tec... 
George L. Curtis
Executive Vice President, Pricing and Proposals*
George L. Curtis
Executive Vice President, Pricing and Proposals*


George L. Curtis is Executive Vice President—Pricing and Proposals. Mr. Curtis joined the Company in 1980, and he has served in a variety of management positions the most recent of which were Vice President of Marketing and Vice President of Business Development. Mr. Curtis holds an MBA degree from Northeastern University and a Bachelor of Arts degree in Biology from Columbia University.... 
Eric J. Dugas
Vice President, Corporate Controller and Chief Accounting Officer
Eric J. Dugas
Vice President, Corporate Controller and Chief Accounting Officer


Eric Dugas was named Vice President, Corporate Controller and Chief Accounting Officer in January 2016. He joined Clean Harbors in March 2014 as the Director of External Reporting and Technical Accounting. Prior to joining Clean Harbors, Eric spent 13 years with Deloitte & Touche LLP where he held several positions of increasing management responsibility. Eric earned a Bachelor of Science in Accounting degree from Boston College and is a Certified Public Accountant (CPA).... 
Eric W. Gerstenberg
Chief Operating Officer
Eric W. Gerstenberg
Chief Operating Officer


Eric W. Gerstenberg is Chief Operating Officer. Mr. Gerstenberg rejoined the Company in June 1999 as Vice President of Disposal Services of Clean Harbors Environmental Services, Inc. From 1997 to 1999, Mr. Gerstenberg was the Vice President of Operations for Pollution Control Industries, a privately owned environmental services company. From 1989 to 1997, he held a variety of positions with the Company including General Manager of the Natick, Baltimore, and Chicago facilities. In 2010, he was pr... 
Eric A. Kraus
Executive Vice President – Corporate Communications and Public Affairs
Eric A. Kraus
Executive Vice President – Corporate Communications and Public Affairs


Eric A. Kraus is Executive Vice President of Corporate Communications and Public Affairs for Clean Harbors. Prior to joining Clean Harbors in 2014, Mr. Kraus was Senior Vice President, Chief Communications and Corporate Affairs Officer for Bacardi Ltd. Previously, Eric was SVP, Corporate Communications and Public Affairs, at Covidien plc. Mr. Kraus also was Vice President, External Relations, Gillette, for The Procter & Gamble Company, a position he assumed following the October 2005 merger o... 
Marvin Lefebvre
President and Country Manager, Clean Harbors Canada*
Marvin Lefebvre
President and Country Manager, Clean Harbors Canada*


Marv was named President and Country Manager, Clean Harbors Canada in July 2015 as part of the Company’s plan to carve out its energy-related segments. He was previously the President, Oil & Gas Field Services. Prior to the Company’s acquisition of Eveready on July 31, 2009, Mr. Lefebvre was Vice President, Operations of Eveready since March 2005. Prior to March 2005, Mr. Lefebvre was the President and Chief Executive Officer of the former River Valley Energy Services Ltd., the predecessor to... 
Chris Melocik
Executive Vice President of Transportation, Logistics and Operations Effectiveness
Chris Melocik
Executive Vice President of Transportation, Logistics and Operations Effectiveness


Mr. Melocik joined the company in 2016. During his 35-year career, he has held leadership positions at a number of companies – most recently at Republic Services, the second largest waste services provider in North America, where he served as Senior Vice President of Operations Effectiveness, Integration and Organizational Effectiveness. Immediately prior, he was Associate Principal at McKinsey & Company, where he was a core leadership member of the Operations, Supply Chain, and Travel and Lo... 
Stephen Mohan
Chief Sales Officer
Stephen Mohan
Chief Sales Officer


Mr. Mohan joined the company in 2016 from Republic Services, a national leader in non-hazardous waste disposal and recycling services. He began at Republic Services in 2009 and most recently served as Senior Vice President of Sales, where he was responsible for delivering more than $8 billion in revenue and directing more than 1,800 sales and customer service professionals. Prior to that, Mr. Mohan worked for more than 10 years as a senior sales and business development executive for three fir... 
David M. Parry
President, North America Sales and Regional Operations*
David M. Parry
President, North America Sales and Regional Operations*


David M. Parry is President, North America Sales and Regional Operations. Mr. Parry joined Clean Harbors in 1988 and he has served in a variety of management positions including President of Industrial and Field Services, Executive Vice President of Sales and Services, Senior Vice President of Eastern Operations. He has also previously held the positions of Regional Vice President, Northeast Region, District Sales Manager, Regional Manager of CleanPack® and Transportation & Disposal Services, Pl... 
Michael J. Twohig
Executive Vice President and Chief Administrative Officer*
Michael J. Twohig
Executive Vice President and Chief Administrative Officer*


Michael J. Twohig is Executive Vice President and Chief Administrative Officer. Mr. Twohig joined the company in 1999 and has served in a variety of management positions including Senior Vice President and Chief Information Officer, Senior Vice President, Administration and E-Business and Vice President of Strategic Initiatives. From 1996 to 1999 he served as Vice President of Business Operations for Internet Commerce Expo, an International Data Group company. Prior to that, he was the Controlle... 
David Vergo
President of Safety-Kleen
David Vergo
President of Safety-Kleen


Mr. Vergo joined the company in 2016 following a 25-year career in the chemical industry. He joined Clean Harbors from Univar, the largest chemical distributor in the United States, where he most recently was the President of Industrial Chemical Sales. Prior to Univar, Mr. Vergo worked for Dow Chemical as the Business Director and Global Marketing Manager of the world’s largest solvent business. In addition, he held other roles at Dow, such as Director of Distribution and Strategic Planning Lea... 
Brian P. Weber
Executive Vice President, Corporate Planning and Development*
Brian P. Weber
Executive Vice President, Corporate Planning and Development*


Brian P. Weber is Executive Vice President, Corporate Planning and Development. Mr. Weber joined the Company in 1990. He has served in a variety of management positions with the Company including, Senior Vice President of Transportation, Vice President of CleanPack Services, and Vice President, Technical Services. Mr. Weber holds a Bachelor of Science degree in Business Management from Westfield State College.... 

* Officer of a wholly-owned subsidiary of the parent holding company, Clean Harbors, Inc.

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