What if the owner/ operator investigates but can’t find the source of a super-emitter event for which it received a notification from the EPA?

If an owner/operator conducts all applicable investigations for all affected facilities and associated equipment subject to these requirements and is unable to identify the source of the super-emitter event, they would indicate that in the report submitted to the EPA and provide the certifications required under 40 CFR 60.5341b(e)(3).