Executive Management

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    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. ... 
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    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. ... 
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    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. ... 
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    Eric J. Dugas

    Senior Vice President, Finance and Chief Accounting Officer
    Mr. Dugas was named Senior Vice President, Finance and Chief Accounting Officer in 2018. 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). ... 
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    Sharon M. Gabriel

    Executive Vice President and Chief Information Officer*
    Ms. Gabriel was named Executive Vice President and CIO in October 2018. She joined Clean Harbors in 2001 and has held a variety of positions of increasing responsibility with the most recent being Senior Vice President of MIS. Ms. Gabriel is leading the Company’s push toward innovative technologies related to Artificial Intelligence, Robotic Process Automation (RPA) and many mobility applications. She holds a Bachelor of Science degree in Environmental Science from New England College. ... 
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    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. ... 
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    Melkeya McDuffie

    Executive Vice President and Chief Human Resources Officer*
    Melkeya McDuffie joined the company as Executive Vice President and Chief Human Resources Officer in February 2022. For more than 15 years, Mel previously served in a variety of senior Human Resources roles with Waste Management, a national leader in Environmental Services. Most recently, she served as Chief Human Resources Officer for The Wallace Foundation, a large private philanthropic organization based out of New York City. Mel holds an MBA from York St. John University. She also received a certification in Labor Relations from Cornell University and a certification in Global Business from Harvard Business School. ... 
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    Robert E. Speights

    President, Industrial Services*
    Mr. Speights joined the Company in 2018, following a lengthy career in a variety of executive sales and operations roles. Robby was most recently with Aegion Corporation as SVP and Chief Sales Officer where he implemented strategic long-term growth plans for its 12 companies that accounted for more than $1.4 billion in revenue. Previously, he was Senior Vice President Business Development, Marketing, and Strategy and held operations for Safety Services at Transfield Services. Prior to Transfield, Robby held a variety of sales, business development and operations roles over a 20-year span at several industrial companies including Aquilex/Hydrochem, MPW Industrial and Dowell/Schlumberger Industrial Service. He attended University of Southern Mississippi and Pearl River College earning an Associate of Science with concentration in Electronics followed by getting accepted into Dowell/Schlumberger’s field engineering program. ... 
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    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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