What was found
DURING ENGINE START AT DESTINATION, HAD BOTH CYAN LEFT AND RIGHT BLEED FAULT CAS MESSAGES AFTER ENGINE START. VERIFIED ON GO, NO GO, OK. AFTER TAKEOFF AND AFTER WING ANTI-ICE SWITCH WAS PLACED ON THE TRIM AIR FAULT CAS MESSAGE AND WING ANTI-ICE CAS MESSAGE. APPEARED. FOLLOWED CHECKLIST AND MESSAGE CLEARED. LEFT WING ANTI-ICE IN OFF POSITION. ALL MESSAGES, EXCEPT LT & RT BLEED FAULT, REMAINED UNTIL DESCENT INTO DESTINATION. AFTER COMMENCING DESCENT, TRIM AIR FAULT, TRIM AIR FAIL, AND LEFT BLEED LEAK CAS MESSAGES ALL APPEARED. FOLLOWED CHECKLIST AND SHUT DOWN THE LEFT ENGINE. ON APPROACH TO LANDING THE RIGHT ENGINE BLEED LEAK APPEARED. DID NOT SHUT DOWN THAT ENGINE. HAVE NUMEROUS PICTURES AND FAULT CODES. LANDED NORMALLY BUT HAD TO DECLARE EMERGENCY. REPLACED THE BLEED MANAGEMENT CONTROLLER