• Substances in transport or in storage incident to such transport are exempt from emergency planning notification.

Substances in transport or in storage incident to such transport are exempt from emergency planning notification. Although these chemicals need not be counted toward threshold planning quantities, Local Emergency Planning Committees (LEPCs) may request information about these chemicals for emergency planning purposes. For example, many substances at facilities such as truck terminals and railroad yards would be exempt because the substances are under active shipping papers. Similarly, substances present in pipelines are exempt from reporting.

The transportation exemption applies to the substances, however, not to the facility. Any substances that are not under active shipping papers or substances not in a pipeline (such as those in a storage tank at the end of a pipeline) must be included for threshold determinations.