CIVIL ACTION TO RECOVER COSTS INCURRED OR TO INCURRED FOR REMOVAL AND REMEDIAL ACTIONS TAKEN OR TO BE TAKEN IN RESPONSE TO RELEASES AND THREATS OF RELEASES OF HAZARDOUS SUBSTANCES AT THE AMERICAN ZINC, LEAD AND SMELTING COMPANY AND NATURAL RESOURCE DAMAGES RESULTING FROM RELEASES OR THREATS OF RELEASES OF HAZARDOUS SUBSTANCES AT AND FROM THE AMERICAN ZINC SITES.