Traffic collision at Grand and Holt in West Covina Heard on: Los Angeles County CA Fire Dispatch 00:05 2122, R124, traffic collision, Grand Avenue, Holt Avenue, PD's on scene, red one. 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. 2122, R124, traffic collision, Grand Avenue, Holt Avenue, PD's on scene, red one. 2026-10-30 05:01 UTC Traffic E Holt Ave & Grand Ave, West Covina, CA 91791 View on map