Medical aid dispatched near West Sierra Avenue Heard on: Sonoma Fire South 00:43 00:00 County Station 91, medical aid, West Sierra Avenue. 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 County Station 91, medical aid, West Sierra Avenue. 00:16 Engine 91, medic 524, medical aid (number withheld) West Sierra Avenue. 00:24 (number withheld) West Sierra Avenue, Totty, Pine Lane, West School Street, Control 4, 1109. 00:35 Control 4, 524 is en route from 4th and Farmers. 00:41 524, responding. 9/3/2026 11:08 AM Medical Emergency W Sierra Ave, Cotati, CA 94931 View on map