Carbon monoxide alarm service at home Heard on: Montgomery County MD Fire Dispatch 00:10 00:00 Number (number withheld) Granchester Place, cross street St. 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 Number (number withheld) Granchester Place, cross street St. 00:03 Brookview Drive. Service call for a CO alarm. 00:05 Paramedic engine 703, proceed 7 alpha 1, box area 2815. 00:10 2212. 2026-11-13 03:11 UTC Fire Grantchester Pl, Gaithersburg, MD 20877 View on map