The third annual Hayward / Union City Chamber of Commerce Business Expo will draw 100 exhibitors under the Grand White Tent in the St. Rose Hospital parking lot, 27200 Calaroga Ave., from 4:30-7:30 on Wednesday, Oct. 5. Chamber members are free, and chamber businesses can reserve a space for $250. The event will include food, wine, gourmet coffee and other beverages. Sign up here to be an exhibitor.