19 CFR § 4.66a - Illegal discharge of oil and hazardous substances.

If a port director receives a request from an officer of the U.S. Coast Guard to withhold clearance of a vessel whose owner or operator is subject to a civil penalty for discharging oil or a hazardous substance into or upon the navigable waters of the United States, adjoining shorelines, or into or upon the waters of the contiguous zone in quantities determined to be harmful by appropriate authorities, such clearance shall not be granted until the port director is informed that a bond or other surety satisfactory to the Coast Guard has been filed.

[T.D. 82–28, 47 FR 5226, Feb. 4, 1982]