Natural gas odor reported near Lassen Court in Clayton Heard on: Contra Costa CA Fire Dispatch Group Calls 00:07 00:00 Truck 92, respond for an odor investigation (number withheld), Lassen Court, across from Thompson's Drive. 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 Truck 92, respond for an odor investigation (number withheld), Lassen Court, across from Thompson's Drive. 00:05 Odor of natural gas, possibly in the residence. 2026-09-10 15:15 UTC Fire Lassen Ct, Clayton, CA View on map