FROM APPROXIMATELY 1932 THROUGH 1973, THE RARE EARTHS FACILITY CONDUCTED THORIUM AND RARE EARTHS PROCESSING THAT CREATED MILL TAILINGS AND OTHER PROCESS WASTES WHICH CONTAINED RADIONUCLIDES AND HEAVY METALS, INCLUDING LEAD, BARIUM, CHROMIUM, AND CADIUM. RESPONDENT HAS UNDERTAKEN REMOVAL ACTIONS. RESPONDENT SHALL COMPLY WITH ALL PROVISIONS OF THIS ORDER. RESPONDENT SHALL BE LIABLE TO U.S. EPA FOR STIPULATED PENALTIES FOR FAILURE TO COMPLY WITH THE REQUIREMENTS OF THIS ORDER.