The Oil Pollution Act of 1990 (known as “OPA 90”) and the Comprehensive Environmental Response, Compensation, and Liability Act (known as “CERCLA”) are two federal environmental laws with significant effects on businesses and individuals across the nation. OPA 90 provides a remedial scheme that apportions the liability and costs of oil spills among responsible parties.

In a decision of first impression interpreting the meaning of “operating” under the Oil Pollution Act of 1990 (“OPA,” 33 U.S.C. §§2701 et seq.), the U.S. Fifth Circuit held the owner and operator of a tugboat liable as the “responsible party” for a spill emanating from a tank barge in its tow, and consequently