EPA IS SEEKING INJUNCTIVE RELIEF AND COST RECOVERY PURSUANT TO SECTIONS 106 AND 107 OF THE COMPREHENSIVE ENVIRONMENTAL RESPONSE, COMPENSATION AND LIABILITY ACT (CERCLA). - THE CITY OF TUCSON: THE CITY OWNED THE AIRPORT PROPERTY FROM APPROXIMATELY 1940 TO 1948. EPA HAS DOCUMENTED RELEASES OF HAZARDOUS SUBSTANCES ON THE AIRPORT PROPERTY DURING THE CITY'S OWNERSHIP. THE CITY'S LIABILITY IS BASED UPON ITS STATUS AS PAST OWNER PURSUANT TO SECTION 107 OF CERCLA. - TUCSON AIRPORT AUTHORITY: EPA HAS DOCUMENTED THAT RELEASES OF HAZARDOUS SUBSTANCES ON THE AIRPORT PROPERTY OCCURRED DURING TAA'S OWNERSHIP & OPERATION. TAA'S LIABILITY IS BASED UPON ITS STATUS AS A CURRENT OWNER/OPERATOR AND PAST OWNER/OPERATOR PURSUANT TO SECTION 107 OF CERCLA.