Grass Valley Police Department Tuesday — 83 calls for service 8:43 a.m. — A caller from the 100 block of Ironhorse Place reported a transient squatting in a backyard. No one was located; extra patrols were requested. 8:45 a.m. — A caller from the 100 block of Mill Street reported several locations had been tagged. 3:49 p.m. — A caller from the 100 block of West Main Street reported a man shoplifting. No charges were desired. 5:28 p.m. — A caller from the 300 block of Northstar Place reported possible drug activity. 6:46 p.m. — A caller from the 800 …