What was found
ABOUT 5 MIN PRIOR TO DESCENT FOR KMEM ARRIVAL HAD ECAM GREEN HYD SYSTEM LOW LEVEL LGT WITH QTY ON OVERHEAD AND ECAM SHOWING AT RED DOT/LOW. RAN ALL CHECKLISTS, DECLARED EMERGENCY, CRANKED GEAR & STOPPED ON CENTER OF RWY AT END OF RWY 36C TOW-IN NO FURTHER PROBLEM. FOUND LINE FROM NUMBER ONE ENGINE HAD TWO HOLES FROM CHAFING AGAINST FITTINGS IN PYLON. REPAIRED LINE IAW AMM 20-23-11-0. LEAKED CHECKED LINES AND SERVICED GREEN SYSTEM HYDS. CYCLED GEAR SEVERAL TIMES, GREEN OPS OK.