Edited sentence: After Robertson taking office there were several senior management resignations including:.Dave Rudberg, the general manager of Olympic and Paralympic operations.Estelle Lo, the city's director of finance, who resigned following several months of expressing concerns that the city may be assuming too much financial risk to get Olympic housing built on time.James Ridge, the deputy city manager.Jody Andrews, the Olympic Village project manager.Judy Roger, the city manager, who was paid $572,000 severance when she left in December 2008 after Robertson said he wanted a fresh start at the top of city hall.Ray Holdgate, the fire chief