Possible exposure to unknown substance near Malvern Heard on: Chester and Montgomery Counties Fire/EMS 00:23 00:00 Three 2923 . 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 Three 2923 . 00:01 You can recall the medical handle it. 00:09 Three 2923 is responding. 00:10 Cover 03:29 . 00:11 No overdose. 00:12 One ten. Opportunity has it. 00:14 Case in (number withheld) West King Street. 00:16 Outstanding. 00:21 Get it on an unknown substance. 2026-09-30 07:56 UTC Medical Emergency W King St, Malvern, PA 19355 View on map