Unity Volunteer Fire Dept Station No 1340 Old Leechburg Rd 340 Old Leechburg Rd, Pittsburgh, PA15239 Unity Volunteer Fire Department located on Old Leechburg Road in Plum Boro is one of the 4 Volunteer Fire Departments in…More Plum. This all-volunteer staff services a 29 square mile area. In addition to their fire fighting services, they also have a quick response medical service unit that assists Plum EMS. The Unity Fire Department is active in the community and will come out to schools, events for children and other gatherings. Check out their website for more information.