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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Interpretation Response #10-0083 ([Chemical Sector Coordinating Council] [Mr. Dan Walters])

Below is the interpretation response detail and a list of regulations sections applicable to this response.

Interpretation Response Details

Response Publish Date:

Company Name: Chemical Sector Coordinating Council

Individual Name: Mr. Dan Walters

Location State: DC Country: US

View the Interpretation Document

Response text:

June 9, 2010




Mr. Dan Walters


Chemical Sector Coordinating Council

1120 Nineteenth Street, NW, Suite 310

Washington, DC 20036

Ref. No. 10-0083

Dear Mr. Walters:

This responds to your April 14, 2010 request for clarification on the applicability of security plan requirements under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180). Specifically, you ask if the en route security plan requirement in § 172.802(a)(3) requires a carrier to address threats that may arise during temporary post-accident storage incidental to the removal of covered materials from an accident site.

The security plan requirements apply to persons who offer for transportation or transport hazardous materials in the quantities and thresholds established by § 172.800(b). A security plan must cover personnel, unauthorized access, and en route security - that is, the security of a covered hazardous materials shipment from its origin to its destination, including shipments stored incidental to movement.

A carrier's security plan may continue to apply during an incident situation under certain circumstances. For example, the carrier's security plan would continue to apply in the event that an incident does not jeopardize the integrity of the package, but immobilizes the motor vehicle. Thus, a carrier's security plan must include measures to ensure the security of the vehicle until it is repaired or towed from the accident site and the security of any transfer or transloading operations for the hazardous materials being transported.

During an accident situation that involves a release of vehicle contents to the environment the originating carrier's security plan would apply up to the point where local first responders or remediation crews assume command of the incident. Leaks and spills must be remediated and any resulting waste materials must be re-offered for transportation. The remediation process often involves a new offeror, carrier, package, and security plan. The responsible party in

possession of a material that triggers the security plan requirements must have and implement a security plan as required by Part 172, Subpart I of the HMR.

I hope this information is helpful. If you need further assistance, please contact this Office.


Charles E. Betts

Chief, Standards Development

Office of Hazardous Materials Standards

172.800(b), 172.802(a)(3)

Regulation Sections

Section Subject
172.800 Purpose and applicability
172.802 Components of a security plan