Medical response to incident at Drummer Walnut Heard on: Contra Costa CA EMS Dispatch Group Calls 00:05 00:00 Medic Seven, Code Two, Drummer Walnut. 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 Medic Seven, Code Two, Drummer Walnut. 00:03 Medic Seven, Code Two, Drummer Walnut. 8/28/2026 11:51 AM Medical Emergency Walnut St, Martinez, CA 94553 View on map