John Snyder has been named general manager for EDCO Disposal Corp., Lemon Grove, Calif., at the company's South San Diego division.
Richard J. Deliberto has been named manager of environmental services for URS Corp., New York.
Stephanie Mostoller has been appointed as director of safety for Riggs Industries Inc., Boswell, Pa. A subsidiary of Riggs Industries, Somerset Welding and Steel, Boswell, has appointed David N. Spear as director of education.
Charles H. Bolton has been named by Camp Dresser and McKee Inc., Tampa, Fla., to lead the firm's growth and strategic direction in the Pacific Northwestern United States.
Harold W. Wiegel has been promoted to senior vice president of customer satisfaction for Mack Trucks Inc., Allentown, Pa.
Daniel D. Costello has been named a senior vice president for HDR Engineering Inc., Tampa, Fla. He is a professional engineer and department manager for HDR's Minneapolis office. Costello also is the national director of waste facilities in HDR's environmental and resource management business group.
Joe Cowan has been appointed president and CEO of Wonderware Corp., Irvine, Calif., an operating unit of the Invensys PLC, London, Industrial Software and Services Division.
Russell K. Mosher has been named corporate accounts manager for Ashland Distribution Co., Dublin, Ohio, at its environmental services division.
Dan Hoversten has been hired as the managing director of the Sustainable Jobs Fund, Philadelphia.
Richard LeFrancois has been appointed by Stellar Industries Inc., Garner, Iowa, as regional hooklift sales manager for the Western region of North America.
Richard Decaire has been appointed by ArvinMeritor Inc., Troy, Mich., as Canadian regional manager for the company's Commercial Vehicle Systems business.
Sherry Giarrusso-Mulhearn has resigned her post as executive director and general counsel of Rhode Island Resource Recovery Corp., Johnston, R.I.
Wally McIntyre, operations manager of Olympic Compactor Rentals Inc., Houston, has been named Employee of the Year by the company.
Scott J. Wallington has been hired as director of corporate development at STS Consultants Ltd., Vernon Hills, Ill.
International Concrete & Aggregates Group (ICAG), Silver Spring, Md., has promoted Margot van Black to director of exposition services and operations. Melissa Werntz has been promoted to director of registration and ancillary services.
Marc J. Rogoff, a vice president with HDR Engineering Inc., Tampa, Fla., has been appointed to a two-year term with the U.S. Environmental Protection Agency's (EPA), Washington, D.C., National Advisory Council for Environmental Policy and Technology (NACEPT). Rogoff will help to define links between the EPA's human resource planning, information and technology, future environmental policy and strategic planning processes.
Rogoff serves as chairman of several national and statewide technical committees for professional associations and has written several textbooks on public works management and recycling. He also has produced more than 75 technical papers and professional presentations.