Students and staff at Redmond Proficiency Academy’s west campus on West Antler Avenue were evacuated at 10:40 a.m. Thursday after an alarm was activated for a suspicious smell. Redmond Fire and Rescue and Cascade Natural Gas responded and after extensive investigation determined the odor was due to nonflammable gas coming from a blocked sewer drain. Students resumed classes by 11:20 a.m. after it was determined there was no danger. The drain repair will be underway soon.