Code 3 medical response at Joy Senior Center Heard on: Contra Costa County CA Fire Dispatch 00:04 00:00 Engine 93 , Medic 56 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 Engine 93 , Medic 56 respond. 00:01 Code three, Joy Senior Center, 6100 Margil. 2026-10-06 00:32 UTC Medical Emergency Margil Way, Brentwood, CA 94513 View on map