On the Union Pacific Railroad’s tracks through Tracy, Calif., east of the Tracy ACE station near the corner of Tracy Blvd. and Linne Road, is a mile-long spur at a junction listed on the railway’s timetable as “Ayala.”

The spur predates the  construction of the ACE station, and was put in place by the Western Pacific Railroad to serve a handful of industries in the area off Gandy Dancer Drive near Tracy Blvd. and Valpico Road.