REPLACEMENT OF AUTOMATIC REFUSE CHUTE FLUSHING SYSTEM (ARCFS) FOR BLOCK 301 TO 367 BUKIT BATOK STREET 31/32/33/34, BLOCK 407 TO 411, 414, 416, 417, 419 TO 423, 426 BUKIT BATOK WEST AVENUE 2/4 AND BLOCK 280 TO 291, 293 TO 295 CHOA CHU KANG AVENUE 2/3 (TOTAL: 96 BLOCKS) REF: CCKTC/CYC/19/14