People: Waste Management Inc (WM)

Mr. Mark A. Weidman is President of Wheelabrator Technologies Inc., a subsidiary of Waste Management Inc since March 2006. As Wheelabrator’s president since 2006, Mr. Weidman’s responsibilities require him to oversee all issues pertaining to the operation and growth of the Company’s waste-to-energy and alternate energy businesses in the U.S., Europe and China. Prior to this assignment, Mr. Weidman served as the vice president of operations at Wheelabrator since 2001; president and COO of the processing division at Synagro Technologies, Inc., a Houston-based residuals management company, since its merger with Bio Gro in August 2000. Prior to that time, Mr. Weidman worked for Wheelabrator/Bio Gro for 11 years, serving as its president since 1996 and in the positions of executive vice president, region vice president and region manager. Before joining Wheelabrator/Bio Gro, Mr. Weidman worked in industrial and municipal water and wastewater treatment operations and design, and hazardous waste management for nine years. Mr. Weidman has an engineering degree from Penn State and is a registered professional engineer.