Garbage pick-up service is set for another increase in Grass Valley, where Waste Management is asking for a 3-percent rate hike.Residents can speak about the proposed increase during a public hearing set for Tuesday; the Grass Valley City Council meets at 7 p.m. Tuesday at City Hall, 125 E. Main St., downtown.Council members also will take public comment about a proposal to ban time and temperature signs, and could vote to approve the ban.In other matters, council members will:• Look at midyear budget adjustments• Consider spending $7,500 to develop an application for Grass Valley that can be used on iPhones• …