Rossmoor Diner forced to close Owner given notice to vacate by Oct. 8 Rossmoor Diner, a staple of the community for 35 years, will be closing its doors. Its final day of operation is planned for Sunday, Oct. 8. Grace Soan, owner of the diner since January 2000, said Rossmoor Shopping Center ownership gave her a 30-day notice earlier this month to vacate. Soan said the diner, which opened