Carbon monoxide alarm at Marsh Creek Court home Heard on: Contra Costa CA Fire Dispatch Group Calls 00:05 00:00 Truck 81, respond. 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 Truck 81, respond. 00:01 Hazardous conditions, (number withheld) Marsh Creek Court. 00:03 Cross of Cambria Lane for a carbon monoxide alarm sounding. 2026-09-18 22:14 UTC Fire Marsh Creek Rd, Clayton, CA 94517 View on map