NORWELL, Mass.–(BUSINESS WIRE)–Clean Harbors, Inc. (“Clean Harbors” or the “Company”) (NYSE: CLH) today announced that it has named Robert Willett as Chairman of the Board, effective immediately, completing the Board transition first announced in May when Founder and Executive Chairman Alan S. McKim communicated his intention to retire from the Board. McKim’s decision to retire comes after more than four decades of service. McKim founded Clean Harbors in 1980 and led the Company’s growth and