Executive Management

  • Alan S. McKim

    Chairman, President and Chief Executive Officer
    Mr. 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 is recognized as an industry leader, with over 35 years' experience in the environmental services business. ... 
  • Michael L. Battles

    Executive Vice President and Chief Financial Officer
    Mr. 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. Prior to his role in Human Health, he served as Chief Accounting Officer for several years and Acting Chief Financial Officer during a one-year search period. Prior to PerkinElmer, Mr. Battles held several positions at Deloitte & Touche LLP from 1990 to 2001, including senior manager, accounting and auditing. He earned a Bachelor of Science in business administration with a concentration in accounting from the University of Vermont. He is a Certified Public Accountant. ... 
  • Mark G. Bouldin

    President, Kleen Performance Products*
    Mr. 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 Technology in Germany and a PhD of Chemical Engineering from the University of Hamburg, Germany. ... 
  • Grace Melidosian Cowan

    Executive Vice President, Customer Service*
    Ms. Cowan joined the Company in 2016.  She has held various senior leadership positions over a 30-year career.  Most recently, she was Executive Vice President, Chief Customer Officer, Consulting and Operations for Sg2, a market intelligence, analytics and consulting firm focused on the healthcare market.   Prior to Sg2, Ms. Cowan worked for Waste Management as Senior Vice President, Customer Experience – a role that included overseeing the company’s 25 inbound/outbound call center operations.  She previously held the role of Senior Vice President of Customer Service and Operations at Conseco and Banker’s Life Insurance.  In addition, she held roles of increasing responsibility at Metlife Financial Services, concluding as Senior Vice President of Customer Experience, Underwriting, Offshoring and Operations. Ms. Cowan was Chief Operating Officer at Vanguard Health Services after spending the first 13 years of her career at Blue Cross and Blue Shield, Illinois.  She holds a Bachelor of Science degree from the College of Business at Northern Illinois University and a Juris Doctorate from University of Iowa College of Law. ... 
  • George L. Curtis

    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
    Mr. 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*
    Mr. Gerstenberg was named Chief Operating Officer in January 2015. From 2010 to 2015 he held positions of increasing responsibility including President of the Environmental, Industrial & Field Services business, Vice President of Disposal Services and Executive Vice President, Environmental Services. In that role, he oversaw Field Services, Technical Services, Disposal Facilities, Transportation and Sales for the Environmental Group. Mr. Gerstenberg joined Clean Harbors in 1989, serving in a variety of positions including General Manager of the Natick, Baltimore, and Chicago facilities. He stepped away from the organization briefly in 1997, serving as Vice President of Operations for privately owned Pollution Control Industries before returning to Clean Harbors in 1999. Mr. Gerstenberg holds a Bachelor of Science degree in Engineering from Syracuse University. ... 
  • Robert Johnston

    President of Oil & Gas*
    Mr. Johnston joined the Company in 2017 following an international career that included executive positions at several Fortune 500 global firms. Over a seven-year period, he served in a variety of senior leadership roles for AECOM, an $18 billion multinational engineering firm, most recently as Executive Vice President, End Markets. Prior to AECOM, Mr. Johnston worked for more than five years at Earth Tech, a Tyco International Ltd. company, where he concluded as Senior Vice President, Global Operations. He was directly responsible for the turnaround of several underperforming businesses during his time at both Earth Tech and AECOM. Mr. Johnston spent the first 12 years of his career in a variety of project management, engineering and division manager roles in both the United Kingdom and Canada. He holds a Bachelor of Engineering degree in Civil Engineering with Architecture from Leeds University and an Executive M.B.A. from University of Calgary. Mr. Johnston also has earned designations as a Chartered Engineer (UK) and Professional Engineer in several provinces in Canada. ... 
  • Eric A. Kraus

    Executive Vice President – Corporate Communications and Public Affairs*
    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 of P&G and The Gillette Company, where he served as Vice President, Corporate Communications and Public Affairs. Mr. Kraus graduated from Boston University. ... 
  • David M. Parry

    President, Clean Harbors Environmental Sales and Service*
    Mr. Parry joined Clean Harbors in 1988 and 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, Plant Manager and CleanPack Chemist. He became Executive Vice President, Energy and Industrial Services in 2010. Mr. Parry holds a Bachelor of Science degree from the Massachusetts Maritime Academy. ... 
  • Michael J. Twohig

    Executive Vice President, Safety and Risk Management*
    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 Controller for Tocco Corporation, a Building Systems company. Mr. Twohig holds an MBA degree from Rivier College and a Bachelor of Science degree in Accounting from Boston College. ... 
  • 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 Leader, where he led the formation of the Dow Oil and Gas business unit. Mr. Vergo spent the first six years of his career in the environmental industry with PDC Environmental Services in Peoria, Ill., a solid and hazardous waste full-service company. He holds a Bachelor of Science degree in Chemistry from Bradley University and an M.B.A. from Cardinal Stritch University. ... 
  • Brian P. Weber

    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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