Person sick near West Marengo Road in Tiffin Heard on: Johnson County IA Fire Dispatch 00:12 00:00 Johnson County Ambulance, JCA two four, respond to sick person at (number withheld) West Marengo Road, Tiffin. Transcript This transcript is auto-generated from live dispatch audio and may be incomplete or inaccurate. It is not an official report and may change. 00:00 Johnson County Ambulance, JCA two four, respond to sick person at (number withheld) West Marengo Road, Tiffin. 00:09 Cross streets are Grand Street and Roberts Ferry Road. 2026-10-11 08:09 UTC Medical Emergency W Marengo Rd, Tiffin, IA 52340 View on map