40 CFR § 355.11
To what substances do the emergency planning requirements of this subpart apply?
June 9, 2020
The emergency planning requirements of this subpart apply to any EHS listed in Appendices A and B of this part. Additionally, if a facility is designated for emergency planning purposes, as provided in §355.10(b), substances that are not EHSs at this facility may become subject to the emergency planning requirements.