Ambulance attending patient near Grand Blvd, San Mateo Heard on: San Mateo County Fire, CalFire CZU 00:05 00:00 Go ahead, check 23. 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 Go ahead, check 23. 00:03 Check 23, you can cancel for ambulance on the patient. 7/30/2026 03:10 PM Medical Emergency Grand Blvd, San Mateo, CA 94401 View on map