Mark Weidman is a former president and chief executive officer of Wheelabrator Technologies, Inc., a $900M/year energy-from-waste business. He led the expansion of the company into the European and Chinese markets, and during his tenure, the company achieved industry-leading safety and operational performance. He has worked in the environmental services sector for more than forty years, specializing in wastewater treatment, biosolids management, waste-to-energy and organic waste management.